New insight in Micro-hole screening for the separation of fines

Size: px
Start display at page:

Download "New insight in Micro-hole screening for the separation of fines"

Transcription

1 New insight in Micro-hole screening for the separation of fines Saurabh Kumar EFPRO-CEPI Early Stage Researchers Workshop /16 Paper for recycling Introduction Share of paper for recycling of the world's papermaking fibre furnish increased from 40 to 54% between 1995 and 2009 It represents 200 millions tons in the world In EU countries: Recycling rate: 47 69% from 1995 and 2010 Recycled fibres are a major source of furnish in European Paper Industry Threats to paper recycling: waste collection; import/export; energy generation potential Recycled fibres average utilisation rate extremely variable: newsprint grade ~92%; graphic/fine papers ~10% Opportunity to optimise recycling & recycled fibre utilisation rate with new manufacturing concept(s)? 2/16

2 Manufacturing concept Introduction Single unit operations on the whole pulp, i.e. on a very heterogeneous material (scale range nm mm) Cellulose fibres Cellulose fines Mineral fillers Pulping Screening & cleaning Deinking Thickening Dispersing Reject ~20% losses containing 98% fines Is this linear & full-stream process the best adapted? Towards a rationalization of deinking lines through the implementation of dedicated treatments to specific pulp fraction 3/16 Future manufacturing concept! Introduction Fines Towards a rationalization of deinking lines through the implementation of dedicated treatments to specific pulp fraction Pulping ex. B. McNett classifier Fines Passing (P) 200 mesh (76µm opening) Long fibres Specific treatment Fines Specific treatment ERIC (ppm) Fines contain maximum ink 50% ONP 50% OMG 100% ONP 0 R 14 P14 R28 P28 R48 P48 R100 P100 R150 P150 R200 P200 McNett fractions 4/16

3 by pressure screening Inlet Fibrous suspension Accept Shorter length fibres Reject Longer length fibres Micro-hole: 250µm Ø Smooth surface screen cylinder 5/16 Passage ratio and fibre length Passage ratio The first published results (TMP) gave: ( l β λ ) (Olson et al. 2000) P( l ) = e Illustration of fibre passage ratio curves (Gooding et al. 2001) Size constant λ : level of Pf(l) related to slot/hole size, Vp, pulp, etc. Shape constant β : degree of fractionation β = 0.5 β = 1.0 β = 5.0 Slot screening (macro) Hole screening Ideal case/perfect fractionation 6/16

4 Analysis of Passage ratio Passage ratio Virgin fibre pulp Deinking pulp Passage ratio, P Chem ical pulp SGW Passage ratio, P st 2nd 1st stage 2nd stage Fibre length (mm) Fibre length (mm) For new screening configuration, the Micro-hole screen plate has β = 1.0 High fractionation efficiency 7/16 Understanding of the screen plate degree of fractionation Passage ratio Passage ratio, P Micro-holes Degree of fractionation β: 1.0 ONPOMG 1st stage Chemical pulp 5g/L 0.7m/s SGW 5g/L 0.7m/s ONPOMG 2nd stage Slots Degree of fractionation β: Fibre passage ratio / Fibre length (mm) 0.20mm 0.15mm 0.10mm 0.06mm Fibre length (mm) From Julien Saint Amand & Perrin 03 Smaller perforations are more selective towards fines (cellulosic + fillers + ink+ micro-stickies ) separation into accepts than micro-slots 60µm 8/16

5 Rotor pressure pulses Accept chamber Screen basket Positive pulse screening phase Rotor hydrodynamics Background Negative pulse reverse flow for cleaning/back flush the magnitude increases the capacity of the screen Magnitude is proportional to the square of rotor tip speed positive pulse Feed side Mid section Reject side 5.0 mm Foil rotor Julien Saint Amand, ,000 measurements 5000hz 310 rotations Average values, maximum values 9/16 Screening capacity Rotor hydrodynamics Accept chamber Screen basket Fibre grammage, g/m² Ci 11 g/l reject side Ci 05 g/l reject side Ci 11 g/l feed side Ci 05 g/l feed side Ve (m/s) Mat formation 10/16

6 Screening capacity Rotor hydrodynamics Accept chamber Screen basket Fibre grammage, g/m² Ci 11 g/l reject side Ci 05 g/l reject side Ci 11 g/l feed side Ci 05 g/l feed side Ve (m/s) Mat formation and non disruption Offers the perspectives to increase the process capacity 11/16 Production of pulp fractions for selective processing or papermaking Free Ink fraction Deinking operations rationalization Fractionator Ink on fibre 12/16

7 Micro-hole screen application Application Deinking Deinking pulp Flotation loss: 23.7% Ink removal efficiency: 83% 100g Pulp 900ppm ERIC 76.3g Pulp 200ppm ERIC Flotation loss: 39% Ink removal efficiency: 81.0% 100g Pulp 900ppm ERIC 1 st 77.4g Pulp 234ppm ERIC 42g Pulp 105ppm ERIC 2 nd 3 rd Possible energy savings on fibre fraction (dispersing) Potential flotation benefits 13/16 Fines valorisation Application Papermaking f1 Bulk (cm 3 /g) f2 SGW 1.8 f1 SGW & f2 SGW f1 SGW LF f % 10% 20% 30% 40% 50% % added SGW Property Fines fraction Bulk (cm 3 /g) Breaking length (m)/ young modulus (MPa) Tear (mn.m²/g) Opacity (%) Light scattering coefficient (m²/kg) Air permeance (cm 3 /m².pa.s) Scott bond (J/m²) f1 f2 No effect No effect Fibrillar fines (f1) increase mechanical strength properties Twice as effective as f2 fines 14/16

8 Perspectives Pressure screening with micro-holes Optimization of screen plate and rotor design Increasing screening system capacity and consistency Applications towards new concepts Optimised deinking line right treatment to the right fraction Stratified paper manufacturing right fibre & fines fractions in the right layer Towards increased utilization rate in graphic grades 15/16 Thank you for your attention! The present research has been performed in the framework of the European project BoostEff European Community's 7th Framework Programme under Grant Agreement n /16

WP5 List of relevant parameters affecting the recyclability performance and sustainability of selected products for LCA

WP5 List of relevant parameters affecting the recyclability performance and sustainability of selected products for LCA WP5 List of relevant parameters affecting the recyclability performance and sustainability of selected products for LCA 1 INTRODUCTION Eco-design solutions of paper products affect different parameters

More information

A PILOT PLANT STUDY OF THE RECYCLABILITY OF PRESSURE SENSITIVE ADHESIVES (PSA)

A PILOT PLANT STUDY OF THE RECYCLABILITY OF PRESSURE SENSITIVE ADHESIVES (PSA) A PILOT PLANT STUDY OF THE RECYCLABILITY OF PRESSURE SENSITIVE ADHESIVES (PSA) Bruce R. Crossley David B. Grimes Senior Research Engineer Senior Research Engineer Beloit Pulping Group R&D Center Beloit

More information

Fines content. SCAN-CM 66:05 Accepted Mechanical and chemical pulps

Fines content. SCAN-CM 66:05 Accepted Mechanical and chemical pulps Accepted 2005 Mechanical and chemical pulps Fines content 0 Introduction This SCAN-test Method has been prepared to make it possible to determine the fines content of mechanical and chemical pulps. This

More information

DISTRIBUTION MODELLING OF STOCK PREPARATION SYSTEMS FOR RECYCLED FIBERS

DISTRIBUTION MODELLING OF STOCK PREPARATION SYSTEMS FOR RECYCLED FIBERS DISTRIBUTION MODELLING OF STOCK PREPARATION SYSTEMS FOR RECYCLED FIBERS Gary M. Scott Research Chemical Engineer USDA Forest Service Forest Products Laboratory Madison, WI 53705-2398 ABSTRACT Stock preparation

More information

Keywords: Recycling; Fiber; Fiber properties; Integrity; Strength; Bonding

Keywords: Recycling; Fiber; Fiber properties; Integrity; Strength; Bonding Changing Quality of Recycled Fiber Material Part II. Characterization of the Strength Potential with Fiber Integrity Value and its Relationship with the Strength Properties of Paper Elias Retulainen,*

More information

Interaction of Flotation Cell Operating Variables

Interaction of Flotation Cell Operating Variables Interaction of Flotation Cell Operating Variables Henry Peters and Tom Remigio Tim Evans and Marc Dagenais Purpose of Study Previous Abitibi-Consolidated deinking plant benchmarking had shown large variation

More information

THE PROFILE: KEY TO REENGINEERED SCREENING presented by: chandrakant.b.naik

THE PROFILE: KEY TO REENGINEERED SCREENING presented by: chandrakant.b.naik THE PROFILE: KEY TO REENGINEERED SCREENING presented by: chandrakant.b.naik www.andritz.com We accept the challenge! chandrakant.b.naik Bachelor of P&P and Master s in Marketing 30+ years experience Experience

More information

COMPONENTS REMOVAL IN FLOTATION DEINKING

COMPONENTS REMOVAL IN FLOTATION DEINKING COMPONENTS REMOVAL IN FLOTATION DEINKING Mika Körkkö*, Ossi Laitinen*, Sari Vahlroos**, Ari Ämmälä*** and Jouko Niinimäki**** * Researcher, University of Oulu, Fibre and Particle Engineering Laboratory

More information

New Technology for Producing Fibrillar Fines Directly from Wood

New Technology for Producing Fibrillar Fines Directly from Wood New Technology for Producing Fibrillar Fines Directly from Wood Ilkka Nurminen,* Erkki Saharinen, and Jari Sirviö A method for producing lignocellulosic fibrillar fines directly from moist wood through

More information

G S. surfactant. Bubbles. surfactant. Ink Fibers and fines

G S. surfactant. Bubbles. surfactant. Ink Fibers and fines REDUCING FIBER LOSS IN LABORATORY- AND MILL-SCALE FLOTATION DEINKING USING SURFACTANT SPRAY TECHNOLOGY G. DiLozier 1, Y. Zhao 1, Y. Deng 1, J.Y. Zhu 2, D. White 3 and M. Prein 4 by Presented by Richard

More information

Physical Testing of Pulp and Paper, Methods & Service list

Physical Testing of Pulp and Paper, Methods & Service list Physical Testing of Pulp and Paper, Methods & Service list July 2017 Contact information: Konstantin Sundin, Director konstantin.sundin@ri.se 076-876 70 43 2017-07-17 1 GENERAL CONDITIONS Prices The price

More information

CHBE 401 Mechanical Pulping Screening Introduction

CHBE 401 Mechanical Pulping Screening Introduction CHBE 401 Mechanical Pulping Screening Introduction James A. Olson Pulp and Paper Centre, Department of Mechanical Engineering, University of British Columbia Introduction Relevance Pulp screens are essential

More information

Recycled Fibre and Deinking

Recycled Fibre and Deinking Papermaking Science and Technology a book series covering the latest technology and future trends Book 7 Recycled Fibre and Deinking Second Edition Totally updated version Book editors Höke, Ulrich, Dr.-Ing.,

More information

EFPRO CEPI - Early Stage Researchers Workshop Dry defibration a waterless preparation process for difficult to recycle paper products

EFPRO CEPI - Early Stage Researchers Workshop Dry defibration a waterless preparation process for difficult to recycle paper products Faculty of Mechanical Science and Engineering, Professorship of Paper Technology EFPRO CEPI - Early Stage Researchers Workshop 2014 Dry defibration a waterless preparation process for difficult to recycle

More information

WP5 LCA of selected packaging products

WP5 LCA of selected packaging products WP5 LCA of selected packaging products INTRODUCTION Paper and board in Europe is a very commonly used raw material for packaging. Paper packaging can exist in many different makes and forms and its production

More information

Life Cycle Assessment of printed paper products and Sustainability Calculator.

Life Cycle Assessment of printed paper products and Sustainability Calculator. Life Cycle Assessment of printed paper products and Sustainability Calculator. Daniele Bussini, Final conference EcoPaperLoop, Kracow 02/12/2014 LCA of printed products. EcoPaperLoop approach EcoPaperLoop

More information

CSF (ml) Refining energy (kw h/t) 3,094 3,027. Tensile Index (N m/g)

CSF (ml) Refining energy (kw h/t) 3,094 3,027. Tensile Index (N m/g) Oxalic Acid Pretreatment for Mechanical Pulping Greatly Improves Paper Strength while Maintaining Scattering Power and Reducing Shives and Triglycerides Ross Swaney and Masood Akhtar, University of Wisconsin,

More information

Panel Discussion, Session 21: Mill Recycling Trials, Tappi 2000 Recycling Conference, Potomac, MD, 2000.

Panel Discussion, Session 21: Mill Recycling Trials, Tappi 2000 Recycling Conference, Potomac, MD, 2000. RCA MRP-2 Mill Recycling Trial Protocol 1. Scope 1.1 This mill trial protocol is designed to characterize the recyclability of adhesives when introduced into the feed stream of a fully functioning commercial

More information

FIBER. June 20, 2012 KATHY KNEER, PRINCIPAL New York, NY

FIBER. June 20, 2012 KATHY KNEER, PRINCIPAL New York, NY FIBER June 20, 2012 KATHY KNEER, PRINCIPAL New York, NY GAA Environmental Workshop Washington, D.C. June 19-21, 2012 OVERVIEW OF FIBER DEMAND GAA Environmental Workshop 2012 2 THE WORLD OF FIBER The global

More information

Optimum Refining of TMP Pulp by Fractionation after the First Refining Stage

Optimum Refining of TMP Pulp by Fractionation after the First Refining Stage Optimum Refining of TMP Pulp by Fractionation after the First Refining Stage Ferluc, Alexandre 1 ; Lanouette, Robert 1, 2 ; Bousquet, Jean-Pierre 3 ; Bussières, Sylvain 4 Abstract The pulp used in this

More information

Young Researchers: European Paper Industry Innovation Hub

Young Researchers: European Paper Industry Innovation Hub Young Researchers: European Paper Industry Innovation Hub 22 November 2016 14h00-18h00 Marc Delgado-Aguilar Dr. Eng. LEPAMAP research group University of Girona The research in short The purpose: Promoting

More information

# Date. 3 5/9, Fri Pulps Additives and functions. 7 6/3 Polysaccharide chemistry by Assoc Prof Akiko Nakagawa

# Date. 3 5/9, Fri Pulps Additives and functions. 7 6/3 Polysaccharide chemistry by Assoc Prof Akiko Nakagawa EG60411 Bio-Material Science Toshiharu Enomae Professor, PhD, Paper Device and Eco-friendly materials 2G103, 10:10-11:25, Tuesday Biomaterial Science(Schedule) # Date Content 1 4/15 History of papermaking

More information

R&D challenged by resource efficiency. PulPaper conference, 1-3 June 2010, Helsinki Kari Edelmann VTT Technical Research Centre of Finland

R&D challenged by resource efficiency. PulPaper conference, 1-3 June 2010, Helsinki Kari Edelmann VTT Technical Research Centre of Finland R&D challenged by resource efficiency PulPaper conference, 1-3 June 2010, Helsinki Kari Edelmann VTT Technical Research Centre of Finland 2 Out-line of the presentation Challenges for forest industry Profit

More information

Blending impact of softwood pulp with hardwood pulp on different paper properties

Blending impact of softwood pulp with hardwood pulp on different paper properties Blending impact of softwood pulp with hardwood pulp on different paper properties Chauhan Ajay*, Kumari Anju**, Ghosh., U.K.,*** ABSTRACT This paper discusses the physical and mechanical strength properties

More information

The Implications of a Changing Raw Material Outlook and its Effects on Containerboard Production, Products and Manufacturing in the Future

The Implications of a Changing Raw Material Outlook and its Effects on Containerboard Production, Products and Manufacturing in the Future The Implications of a Changing Raw Material Outlook and its Effects on Containerboard Production, Products and Manufacturing in the Future ICCA/WCO GLOBAL SUMMIT 22-25 May, 2011 Outi Juntti, Pöyry Management

More information

Cellulose Based Packaging Recyclability. Graziano Elegir Environmental manager INNOVHUB-SSI, PAPER DIVISION Milano, Italy

Cellulose Based Packaging Recyclability. Graziano Elegir Environmental manager INNOVHUB-SSI, PAPER DIVISION Milano, Italy Cellulose Based Packaging Recyclability Graziano Elegir Environmental manager INNOVHUB-SSI, PAPER DIVISION Milano, Italy INPACK, Gornja Radgona, 27 August 2014 1 PACKAGING PRODUCTS Packaging is used on

More information

Recycling and Disposal of Thermoset Composites Steve Pickering University of Nottingham

Recycling and Disposal of Thermoset Composites Steve Pickering University of Nottingham Recycling and Disposal of Thermoset Composites Steve Pickering University of Nottingham Workshop on Life Cycle Assessment (LCA) for Composites, Composites Gateway 25 th September 2013, Dartington Hall.

More information

Contents. Improved Level and Control of Stiffness. Introduction - research themes paper and board. Introduction - Wageningen UR Paper and Board

Contents. Improved Level and Control of Stiffness. Introduction - research themes paper and board. Introduction - Wageningen UR Paper and Board Improved Level and Control of Stiffness A joint action of 18 mills, converters and suppliers supported by Wageningen UR Paper and Board Robin Sinke Wageningen UR Paper and Board Contents Introduction to

More information

BOKELA DYNO Filter. Dynamic Crossflow Filtration. 02/ 2018 en

BOKELA DYNO Filter. Dynamic Crossflow Filtration. 02/ 2018 en BOKELA DYNO Filter Dynamic Crossflow Filtration 02/ 2018 en Dynamic Crossflow Filtration with the BOKELA DYNO Filter Dynamic Membranfiltration - Dynamic Sieve Filtration - Dynamic Precoat Filtration Separation

More information

Energy consideration in cement grinding

Energy consideration in cement grinding Introduction Reasons for energy considerations Introduction o Rising consumption depleting energy resources o Depleting resources escalating energy prices o Consumption generates increasing green house

More information

From lab qualitative and quantitative macrosticky measurements to the first on-line prototype

From lab qualitative and quantitative macrosticky measurements to the first on-line prototype From lab qualitative and quantitative macrosticky measurements to the first on-line prototype 27th INGEDE Symposium 28 February 2018, Munich Benjamin Fabry Motivations «Stickies» is a broad term for all

More information

Paper Recycling Technology

Paper Recycling Technology Paper Recycling Technology Richard A. Venditti richard_venditti@ncsu.edu For more detailed slides go to: http://go.ncsu.edu/venditti Paper Science and Engineering North Carolina State University Other

More information

Reprints. Dr Salah El Siddique Awadel Karim has a. On the road to zero pulp rejects?

Reprints. Dr Salah El Siddique Awadel Karim has a. On the road to zero pulp rejects? By MARK RUSHTON, Editor In search of higher yield, and the use of less and less water, new technology breakthroughs are beginning to emerge On the road to zero pulp rejects? Dr. Awedel Karim earned a gold

More information

Characteristics of out-of-plane rheological behaviour of paper

Characteristics of out-of-plane rheological behaviour of paper ANNUAL TRANSACTIONS OF THE NORDIC RHEOLOGY SOCIETY, VOL. 13, 5 Characteristics of out-of-plane rheological behaviour of paper Tero Ponkkala, Vesa Kunnari and Elias Retulainen, Technical Research Center

More information

Mechanical Pulping Sessions. Session 1 The Mechanical Pulping Process Electrical Energy Requirements

Mechanical Pulping Sessions. Session 1 The Mechanical Pulping Process Electrical Energy Requirements Mechanical Pulping Sessions Session 1 The Mechanical Pulping Process Electrical Energy Requirements Introduction Mechanical pulps used to manufacture printing papers are produced either by: > Stone Groundwood

More information

"Secondary Fiber and Deinking" Edited by Lothar Göttsching And Heikki Pakarinen

Secondary Fiber and Deinking Edited by Lothar Göttsching And Heikki Pakarinen Item Number: 0202FIN07 ISBN: 952-5216-07-1 649 pages Chapter 1 - General aspects and basic statistics 1 General aspects...12 2 Basic statistics...14 2.1 Utilization rate of recovered paper...16 2.2 Recovery

More information

"Pulp and Paper Testing" Edited by Jan-Erik Levlin And Liva Sōderhjeln

Pulp and Paper Testing Edited by Jan-Erik Levlin And Liva Sōderhjeln Item Number: 0202FIN17 ISBN: 952-5216-17-9 287 pages Contents include: Single fibers and pulp testing Paper testing Uncertainty of testing Standardization Chapter 1 - Aim of pulp and paper testing 1 Why

More information

LEPAMAP group -research lines-

LEPAMAP group -research lines- LEPAMAP group -research lines- J. A. Méndez, F. Vilaseca, M. A. Pèlach, J. Puig, P. Mutjé University of Girona EPS, building PI, C/. M. Aurèlia Capmany 61 17071, Girona, Spain http://lepamap.udg.edu jalberto.mendez@udg.edu

More information

Criteria for a sustainable paper recycling loop

Criteria for a sustainable paper recycling loop INNOVHUB STAZIONI SPERIMENTALI PER L INDUSTRIA PAPER DIVISION Criteria for a sustainable paper recycling loop Graziano Elegir 1, Co-authors: Daniele Bussini 1, Hans-Joachim Putz 2, Saskia Runte 2 1 Innovhub-SSI

More information

PULP EXTRUSIONS INCORPORATING SLUDGE FROM THE PULP AND PAPER INDUSTRY. Associate Professor. University of Wisconsin-Madison One Gifford Pinchot Drive

PULP EXTRUSIONS INCORPORATING SLUDGE FROM THE PULP AND PAPER INDUSTRY. Associate Professor. University of Wisconsin-Madison One Gifford Pinchot Drive PULP EXTRUSIONS INCORPORATING SLUDGE FROM THE PULP AND PAPER INDUSTRY C. Tim Scott Dan Klingenberg General Engineer Associate Professor USDA Forest Service Department of Chemical Engineering Forest Products

More information

INDUSTRIAL SCALE-UP OF ENZYME ENHANCED DEINKING OF NON-IMPACT PRINTED TONERS

INDUSTRIAL SCALE-UP OF ENZYME ENHANCED DEINKING OF NON-IMPACT PRINTED TONERS In: Proceedings of the 1995 TAPPI Pulping conference; 1995 October 1-5; Chicago, IL. Atlanta, GA: TAPPI PRESS: 349-354. Book 1. INDUSTRIAL SCALE-UP OF ENZYME ENHANCED DEINKING OF NON-IMPACT PRINTED TONERS

More information

ANALYSIS OF THE CONSTRUCTION AND OPERATION OF SYSTEM WOOD CHIPPING AND TRANSFER CHIPS

ANALYSIS OF THE CONSTRUCTION AND OPERATION OF SYSTEM WOOD CHIPPING AND TRANSFER CHIPS 60 (4): 2015 671-678 ANALYSIS OF THE CONSTRUCTION AND OPERATION OF SYSTEM WOOD CHIPPING AND TRANSFER CHIPS Mariusz Reczulski Technical University of Lodz, Institute of Papermaking And Printing Lodz, Poland

More information

Kansen binnen de circulaire economie Duurzaamheid als aanjager voor innovatie en samenwerking. Jo Cox, Managing Director 16 maart 2017

Kansen binnen de circulaire economie Duurzaamheid als aanjager voor innovatie en samenwerking. Jo Cox, Managing Director 16 maart 2017 Kansen binnen de circulaire economie Duurzaamheid als aanjager voor innovatie en samenwerking Jo Cox, Managing Director 16 maart 2017 Smurfit Kappa at a Glance World leader in paper based packaging 34

More information

Reliable designs for centrifugal cleaners

Reliable designs for centrifugal cleaners Reliable designs for centrifugal cleaners Geoff Covey, Chairman, Covey Consulting Pty. Ltd. 1 st Floor, 660 High St. Kew VIC 3102, Australia Abstract Centrifugal cleaners have been used extensively in

More information

Gary M. Scott Super. Chemical Engineer Research Chemical Engineer David W. Bormett. Said Abubakr. Nancy Ross-Sutherland Chemical Engineer

Gary M. Scott Super. Chemical Engineer Research Chemical Engineer David W. Bormett. Said Abubakr. Nancy Ross-Sutherland Chemical Engineer In: Proceedings of the 1995 TAPPI Pulping conference; 1995 October 1-5; Chicago, IL. Atlanta, GA: TAPPI PRESS: RECYCLABILITY OF LINERLESS PSA STAMPS Said Abubakr Gary M. Scott Super. Chemical Engineer

More information

THE EFFECT OF USING WHITE BIRCH ON MECHANICAL PROPERTIES AND FIBER LENGTH DISTRIBUTION OF MIXED HARDWOOD CMP PULP

THE EFFECT OF USING WHITE BIRCH ON MECHANICAL PROPERTIES AND FIBER LENGTH DISTRIBUTION OF MIXED HARDWOOD CMP PULP THE EFFECT OF USING WHITE BIRCH ON MECHANICAL PROPERTIES AND FIBER LENGTH DISTRIBUTION OF MIXED HARDWOOD CMP PULP Ali Soleimani, a Hossein Resalati, b and Iman Akbarpour c, * In this research, the effects

More information

Size reduction equipment for processing dry bulk materials. How to operate an air classifier mill to meet your fine grinding goals

Size reduction equipment for processing dry bulk materials. How to operate an air classifier mill to meet your fine grinding goals As appeared in June 2013 PBE Copyright CSC Publishing www.powderbulk.com How to operate an air classifier mill to meet your fine grinding goals Rob Voorhees Hosokawa Micron Powder Systems An air classifier

More information

Recovered Paper Yield Estimate Using Laboratory and Mill Accounting Data

Recovered Paper Yield Estimate Using Laboratory and Mill Accounting Data Robert de Jong, President, 2Fiber Consulting ABSTRACT Yield is an important process parameter with serious economic and environmental consequences. Precise calculation of yield is not easy. Mills use various

More information

Chapter 2 Generation of Waste in Pulp and Paper Mills

Chapter 2 Generation of Waste in Pulp and Paper Mills Chapter 2 Generation of Waste in Pulp and Paper Mills Abstract In the Pulp and Paper Industry several types of solid wastes and sludge are generated. Solid waste is mainly produced from pulping, deinking

More information

VTT Technical Research Centre of Finland Ltd

VTT Technical Research Centre of Finland Ltd VTT TECHNICAL RESEARCH CENTRE OF FINLAND LTD VTT Technical Research Centre of Finland Ltd Harri Kiiskinen, Timo Leino 16.2.2018 VTT Technical Research Centre of Finland Ltd 75 years experience in supporting

More information

TEMPO Oxidized Thermomechanical Pulp Used as a Paper Reinforcement

TEMPO Oxidized Thermomechanical Pulp Used as a Paper Reinforcement TEMPO Oxidized Thermomechanical Pulp Used as a Paper Reinforcement David Myja 12, Eric Loranger 1, Estelle Léonard 3, Christophe Len 3, and Robert Lanouette 1 1 Lignocellulosic material research Centre,

More information

Effect of Virgin Fiber Content on Strength and Stiffness Characteristics of a Three-layer Testliner

Effect of Virgin Fiber Content on Strength and Stiffness Characteristics of a Three-layer Testliner Effect of Virgin Fiber Content on Strength and Stiffness Characteristics of a Three-layer Testliner Nikolay P. Midukov, a * Thomas Schrinner, b Harald Grossmann, b Аlexander S. Smolin, a and Victor S.

More information

Grinding & Dispersing NETZSCH SECOMY S. Precision Cutting Redefined! our technology YOUR SUCCESS

Grinding & Dispersing NETZSCH SECOMY S. Precision Cutting Redefined! our technology YOUR SUCCESS Grinding & Dispersing NETZSCH SECOMY S Precision Cutting Redefined! our technology YOUR SUCCESS SECOMY S Precision Cutting Redefined! The NETZSCH range of Fine-Grinding Mills type SECOMY S consists of

More information

Impact of Selective Refining Combined with Inter-stage Ozone Treatment on Thermomechanical Pulp

Impact of Selective Refining Combined with Inter-stage Ozone Treatment on Thermomechanical Pulp Impact of Selective Refining Combined with Inter-stage Ozone Treatment on Thermomechanical Pulp Yu Sun, a Robert Lanouette, a, * Jean-Noël Cloutier, b Éric Pelletier, c and Michel Épiney d The aim of this

More information

J. F. Hunt M. Tamasy-Bano and H. Nyist ABSTRACT

J. F. Hunt M. Tamasy-Bano and H. Nyist ABSTRACT Part II - Modelling the Drying of Three-Dimensional Pulp Moulded Structures - Drying Data Obtained from Flat Panels using Virgin and Recycled Paper Fibre J. F. Hunt M. Tamasy-Bano and H. Nyist USDA, Forest

More information

REPULPING AND CLEANING OF RECOVERED PAPER: UNDELIVERABLE AND DISCARDED MAIL. David W. Bormett Supv. Res. Chem. Eng. Said Abubakr

REPULPING AND CLEANING OF RECOVERED PAPER: UNDELIVERABLE AND DISCARDED MAIL. David W. Bormett Supv. Res. Chem. Eng. Said Abubakr REPULPING AND CLEANING OF RECOVERED PAPER: UNDELIVERABLE AND DISCARDED MAIL Said Abubakr David W. Bormett Supv. Res. Chem. Eng. Chemical Engineer Marguerite S. Sykes John Klungness Forest Prod. Technol.

More information

Effect of the deinking process on physical properties of various wood-free recovered paper furnishes

Effect of the deinking process on physical properties of various wood-free recovered paper furnishes T154 Effect of the deinking process on physical properties of various wood-free recovered paper furnishes By P. Huber, B. Carré, M. Petit-Conil, B. Fabry and S. Bhattacharjee Abstract: The aim of this

More information

The Effects of Magazine and Filler on the Flotation Deinking of Newsprint

The Effects of Magazine and Filler on the Flotation Deinking of Newsprint i The Effects of Magazine and Filler on the Flotation Deinking of Newsprint M.K. LETSCHER and F.J. SUTMAN The exact roles which magazine inclusion and filler usage play in the flotation deinking of newsprint

More information

New Insights into Gap Forming of Lightweight Containerboard

New Insights into Gap Forming of Lightweight Containerboard New Insights into Gap Forming of Lightweight Containerboard Executive Summary This presentation gives new insights into high-speed gap forming of lighter weight containerboard. A relationship between the

More information

J. Environ. Res. Develop. Journal of Environmental Research And Development Vol. 8 No. 3, January-March 2014

J. Environ. Res. Develop. Journal of Environmental Research And Development Vol. 8 No. 3, January-March 2014 LAMINATED COMPOSITE OF FILLER LOADED PAPER SHEETS MANUFACTURED USING RICE STRAW FIBERS AND UREA FORMALDEHYDE RESIN Sinha Sanjay Kumar Akhouri* and Samarjeet Singh Department of Chemical Technology, SLIET,

More information

Highly porous fibre foams - Potential end use applications

Highly porous fibre foams - Potential end use applications VTT TECHNICAL RESEARCH CENTRE OF FINLAND LTD Highly porous fibre foams - Potential end use applications COST Action FP1205 March 7-9 2017, Stockholm, Sweden Elina Pääkkönen, Tiina Pöhler, Petri Jetsu,

More information

DIFFERENT WAYS TO DECREASE EMISSIONS IN SC-PAPER MAKING TO MEET NEW POLLUTION PREVENTION LIMITS

DIFFERENT WAYS TO DECREASE EMISSIONS IN SC-PAPER MAKING TO MEET NEW POLLUTION PREVENTION LIMITS DIFFERENT WAYS TO DECREASE EMISSIONS IN SC-PAPER MAKING TO MEET NEW POLLUTION PREVENTION LIMITS T. Lappalainen * (1); M. Mäkinen (1) (1) Fiber Technology Center, Laboratory of Paper Technology, Department

More information

Rethinking dispersion

Rethinking dispersion Rethinking dispersion A shear-free inline dispersion process for high volume automatic production. Lumps, or more scientifically, agglomerates, can render a complex product such as a formulated paint useless

More information

air classification UCX air classifier series

air classification UCX air classifier series UCX air classifier series The process of air classification is of critical importance for many grinding operations. Generally the overall energy consumption for grinding can be reduced drastically provided

More information

MILL LEAKAGE STUDIES REVEAL COSTLY AND UNNECESSARY LOSS OF FIBER, ENERGY AND WATER

MILL LEAKAGE STUDIES REVEAL COSTLY AND UNNECESSARY LOSS OF FIBER, ENERGY AND WATER MILL LEAKAGE STUDIES REVEAL COSTLY AND UNNECESSARY LOSS OF FIBER, ENERGY AND WATER Author: Ross Elliot, Tecumseth Filtration Inc. Abstract: Mill Leakage is the significant and unnecessary loss of fiber,

More information

Flotation Column: A Process Unit for Cleaning Up Paper Machine Whitewater Circuits

Flotation Column: A Process Unit for Cleaning Up Paper Machine Whitewater Circuits Flotation Column: A Process Unit for Cleaning Up Paper Machine Whitewater Circuits Y. Dionne, Bowater, Gatineau, QC, Canada M. Ricard, FPInnovations, Paprican, Pointe-Claire, QC, Canada G. Dorris, FPInnovations,

More information

This work was prepared by U.S. Government employees on official time and is therefore in the public domain and not subject to copyright.

This work was prepared by U.S. Government employees on official time and is therefore in the public domain and not subject to copyright. BENCHMARKING AND MODELING OF A CLOSED-LOOP PILOT SYSTEM Carl Houtman and Karen Scallon USDA, Forest Products Laboratory, Madison, WI, USA Abstract Computer modeling and tracer studies are useful tools

More information

EMC FLOTATION TEST PROCEDURE 2 LABORATORY FLOTATION TEST PROCEDURE FOR MF1 AND MF2 TESTS AND REGRINDING OF CLEANER TAILINGS

EMC FLOTATION TEST PROCEDURE 2 LABORATORY FLOTATION TEST PROCEDURE FOR MF1 AND MF2 TESTS AND REGRINDING OF CLEANER TAILINGS EMC FLOTATION TEST PROCEDURE 2 LABORATORY FLOTATION TEST PROCEDURE FOR MF1 AND MF2 TESTS AND REGRINDING OF CLEANER TAILINGS SYNOPSIS Performing a flotation rate test characterises the ore. The results

More information

EMC FLOTATION TEST PROCEDURE 2 LABORATORY FLOTATION TEST PROCEDURE FOR MF1 AND MF2 TESTS AND REGRINDING OF CLEANER TAILINGS

EMC FLOTATION TEST PROCEDURE 2 LABORATORY FLOTATION TEST PROCEDURE FOR MF1 AND MF2 TESTS AND REGRINDING OF CLEANER TAILINGS EMC FLOTATION TEST PROCEDURE 2 LABORATORY FLOTATION TEST PROCEDURE FOR MF1 AND MF2 TESTS AND REGRINDING OF CLEANER TAILINGS SYNOPSIS Performing a flotation rate test characterises the ore. The results

More information

Shear/Compression Treatment of Wood Material A Way of Reducing Energy Demand in TMP Processes

Shear/Compression Treatment of Wood Material A Way of Reducing Energy Demand in TMP Processes Shear/Compression Treatment of Wood Material A Way of Reducing Energy Demand in TMP Processes Silvia Viforr, Lennart Salmén STFI-PACKFORSK AB, Box 5604, SE-114 86, Stockholm, Sweden Abstract Shear and

More information

Assessment of print product recyclability. Deinkability test

Assessment of print product recyclability. Deinkability test January 2018 18 Pages Assessment of print product recyclability Introduction Good recyclability of print products is crucial for the sustainability of the graphic paper loop. It belongs to the focal work

More information

Caustic Soda Delignification of Khar Grass for Separation of Cellulosic Fibers

Caustic Soda Delignification of Khar Grass for Separation of Cellulosic Fibers 2015 International Conference on Advances in Environment Research Volume 87 of IPCBEE (2015) DOI: 10.7763/IPCBEE. 2015. V87. 8 Caustic Soda Delignification of Khar Grass for Separation of Cellulosic Fibers

More information

Integrated Pollution Prevention and Control (IPPC) Reference Document on Best Available Techniques in the Pulp and Paper Industry.

Integrated Pollution Prevention and Control (IPPC) Reference Document on Best Available Techniques in the Pulp and Paper Industry. EUROPEAN COMMISSION Integrated Pollution Prevention and Control (IPPC) Reference Document on Best Available Techniques in the Pulp and Paper Industry December 2001 Executive Summary EXECUTIVE SUMMARY

More information

28 th IAPRI World Symposium on Packaging

28 th IAPRI World Symposium on Packaging 28 th IAPRI World Symposium on Packaging Green Fiber Bottle: Towards a Sustainable Package and a Manufacturing Process Mattia Didone* 1, Guido Tosello 1, Kiril Kirilov 2, Alexander Bardenstein 2, Søren

More information

MULTIVARIATE STATISTICAL EVALUATION OF PHYSICAL PROPERTIES OF PULPS REFINED IN A PFI MILL

MULTIVARIATE STATISTICAL EVALUATION OF PHYSICAL PROPERTIES OF PULPS REFINED IN A PFI MILL MULTIVARIATE STATISTICAL EVALUATION OF PHYSICAL PROPERTIES OF PULPS REFINED IN A PFI MILL Authors*: Patrícia Kaji Yasumura 1, 2 Maria Luiza Otero D Almeida 1 Song Won Park 2 Keywords: PFI mill, principal

More information

Which parameters characterise the life time of fibres in paper for recycling?

Which parameters characterise the life time of fibres in paper for recycling? Which parameters characterise the life time of fibres in paper for recycling? Gert Meinl, PTS REFFIBRE Conference Munich, Germany September 8th, 2016 1 Outline 1. Key parameters for characterising the

More information

Totally updated version

Totally updated version Papermaking Science and Technology a book series covering the latest technology and future trends Book 5 Mechanical Pulping Second Edition Totally updated version Book editor Bruno Lönnberg, D.Sc. (Tech.),

More information

Precision Lead Screws

Precision Lead Screws Precision Lead Screws ov-precision_lead_screws_divider - Updated - 18-09-2017 163 Precision Lead Screws Technical Information Precision lead screws ov-precision_lead_screws_technical_info - Updated - 18-09-2017

More information

Fines fraction of paper stock by wet screening

Fines fraction of paper stock by wet screening T 26 cm-94 PROVISIONAL METHOD 979 CLASSICAL METHOD 990 REVISED 994 994 TAPPI The information and data contained in this document were prepared by a technical committee of the Association. The committee

More information

Sizing Methods Screening Classification

Sizing Methods Screening Classification Sizing Methods There are two methods of industrial sizing. i. Screening ii. Classification Screening is generally carried out on relatively coarse material, as the efficiency decreases rapidly with fineness.

More information

the European Paper Berry Wiersum CEO, Sappi Europe RISI March 2014 B. Wiersum 11 March 2014

the European Paper Berry Wiersum CEO, Sappi Europe RISI March 2014 B. Wiersum 11 March 2014 How do you future-proof the European Paper Industry? Berry Wiersum CEO, Sappi Europe 1 From the perspective of a Graphics Paper Producer COST, CUSTOMERS AND CASH GROWTH AND CONVERSION NEW REVENUE STREAMS

More information

Zhejiang Fotech International Co. Ltd. PTFE Molding Powder. Tensile strength (Mpa) Elongation at break %

Zhejiang Fotech International Co. Ltd. PTFE Molding Powder. Tensile strength (Mpa) Elongation at break % PTFE Molding Powder FT 4TM FT 4TN S Appearance White powder, no impurities Tensile strength (Mpa) 36 35.0 Elongation at break % 320 320 Bulk density (g/l) 300 450 300 550 Average particle size (μm) 30±5

More information

EFFECT OF PULPS FRACTIONATION ON FORMATION AND STRENGTH PROPERTIES OF LABORATORY HANDSHEETS

EFFECT OF PULPS FRACTIONATION ON FORMATION AND STRENGTH PROPERTIES OF LABORATORY HANDSHEETS LAPPEENRANTA UNIVERSITY OF TECHNOLOGY Faculty of Technology Master s Degree Program in Chemical and Process Engineering Yana Zaytseva EFFECT OF PULPS FRACTIONATION ON FORMATION AND STRENGTH PROPERTIES

More information

THE RTM-LIGHT MANUFACTURING PROCESS: EXPERIMENTATION AND MODELLING

THE RTM-LIGHT MANUFACTURING PROCESS: EXPERIMENTATION AND MODELLING THE RTM-LIGHT MANUFACTURING PROCESS: EXPERIMENTATION AND MODELLING O. Maclaren 1, J.M. Gan 2, C.M.D. Hickey 2, S. Bickerton 2, P.A. Kelly 1 1 Department of Engineering Science, 2 Centre for Advanced Composite

More information

Parameters of Paper for Recycling grades in Europe for allocation methods used in environmental assessment

Parameters of Paper for Recycling grades in Europe for allocation methods used in environmental assessment Parameters of Paper for Recycling grades in Europe for allocation methods used in environmental assessment Gert Meinl, Lydia Tempel, PTS Heidenau Germany Workshop on 19 th of April 2016, Darmstadt, Germany

More information

Keywords: recovered paper; paper recycling; collection rate; collection systems; quality

Keywords: recovered paper; paper recycling; collection rate; collection systems; quality IMPACT OF INCREASED COLLECTION RATES AND THE USE OF COMMINGLED COLLECTION SYSTEMS ON THE QUALITY OF RECOVERED PAPER. PART 1: INCREASED COLLECTION RATES Ruben Miranda, M. Concepcion Monte and Angeles Blanco

More information

Biofibre processing - Competences at VTT S. Heinemann

Biofibre processing - Competences at VTT S. Heinemann Biofibre processing - Competences at VTT S. Heinemann FP1105 Workshop 3-4 December 2012, Stockholm/Sweden 12/12/2012 2 VTT s status as performer of R&D work Basic research Applied research VTT knowledge

More information

ISSN: [Rajan * et al., 6(8): August, 2017] Impact Factor: 4.116

ISSN: [Rajan * et al., 6(8): August, 2017] Impact Factor: 4.116 IJESRT INTERNATIONAL JOURNAL OF ENGINEERING SCIENCES & RESEARCH TECHNOLOGY TO ANALYZE THE CONCEPT OF GREEN SUPPLY CHAIN MANAGEMENT IN PAPER INDUSTRY Renil Rajan *1 & Rahul Charles Francis 2 *1 M.Tech Scholar,

More information

WET-END APPLICATIONS OF NFC

WET-END APPLICATIONS OF NFC WET-END APPLICATIONS OF NFC Lutz Hamann, Papiertechnische Stiftung SUNPAP Workshop 5.10.2011 Content Wet end applications of NFC Purpose Used samples and methods Preparation, dosage strategy, retention

More information

Size Reduction with Cutting Mills

Size Reduction with Cutting Mills Size Reduction with Cutting Mills Cutting Mills RETSCH cutting mills are used successfully for the efficient preliminary size reduction of a huge variety of materials. The mills offer a high level of operational

More information

On Finite Element Analysis of Steel and RC Beams : Performance of Different Elements

On Finite Element Analysis of Steel and RC Beams : Performance of Different Elements On Finite Element Analysis of Steel and RC Beams : Performance of Different Elements Biswanath Charan 1, Pijush Topdar 2 1 (M-Tech student, Dept. of Civil Engg NIT Durgapu,India) 2 (Assistant Professor,

More information

NATURAL MINERAL SOLUTIONS IMPROVING YOUR PACKAGING

NATURAL MINERAL SOLUTIONS IMPROVING YOUR PACKAGING NATURAL MINERAL SOLUTIONS IMPROVING YOUR PACKAGING Technical Solutions IMERYS SOLUTIONS FOR BOARD & PACKAGING As the world s leading mineral-based solutions provider for the global paper and packaging

More information

An end to overcrowding

An end to overcrowding An end to overcrowding Hydrous kaolin optimises paint opacity by improving TiO 2 spacing. Although the refractive index of most extenders is too low to directly affect the opacity of coatings, small particle

More information

PULP EXTRUSION AT ULTRA-HIGH CONSISTENCIES INTRODUCTION

PULP EXTRUSION AT ULTRA-HIGH CONSISTENCIES INTRODUCTION PULP EXTRUSION AT ULTRA-HIGH CONSISTENCIES C. Tim Scott Stefan Zauscher General Engineer Research Associate USDA, Forest Service University of Wisconsin Forest Products Laboratory 1 Dept. Chemical Engr.

More information

The purpose of the traditional headbox flow sheet is multifold. Basic functions of headboxes will be discussed.

The purpose of the traditional headbox flow sheet is multifold. Basic functions of headboxes will be discussed. Flow Sheets 101 Executive Summary The purpose of the traditional headbox flow sheet is multifold. Basic functions of headboxes will be discussed. This paper will touch on the three types of flow sheet

More information

MINUTES OF THE PRE-BID CONFERENCE

MINUTES OF THE PRE-BID CONFERENCE MINUTES OF THE PRE-BID CONFERENCE January 14, 2016, 12:00, Unitary Enterprise Paper Mill of Goznak (Borisov) on the technical and procedural issues of preparation and submission of proposals under ITB

More information

PIN MILLS POWDER PROCESSING TECHNOLOGY: THE STURTEVANT SOLUTION.

PIN MILLS POWDER PROCESSING TECHNOLOGY: THE STURTEVANT SOLUTION. PIN MILLS POWDER PROCESSING TECHNOLOGY: THE STURTEVANT SOLUTION. STURTEVANT PIN MILLS THINK VERSATILE. THINK STURTEVANT. Designed to use varying degrees of impact and agitation to process your materials,

More information

Utilization of Post-Consumer Recycled Asphalt Shingles (RAS) and Fractionated RAP in HMA. Andrew Cascione R. Christopher Williams Debra Haugen

Utilization of Post-Consumer Recycled Asphalt Shingles (RAS) and Fractionated RAP in HMA. Andrew Cascione R. Christopher Williams Debra Haugen Utilization of Post-Consumer Recycled Asphalt Shingles (RAS) and Fractionated RAP in HMA Andrew Cascione R. Christopher Williams Debra Haugen Acknowledgements Illinois Tollway Authority- Steve Gillen Quigg

More information

Research for Anti-cracking Ability of Mill Cut Steel Fiber Concrete

Research for Anti-cracking Ability of Mill Cut Steel Fiber Concrete Research for Anti-cracking Ability of Mill Cut Steel Fiber Concrete Shanghai Research Institute of Building Sciences Group Shanghai municipal Engineering Institute 1997 Research for Anti-cracking Ability

More information

Out of plane rheological behaviour of paper: the effect of furnish composition, basis weight and drying shrinkage

Out of plane rheological behaviour of paper: the effect of furnish composition, basis weight and drying shrinkage ANNUAL TRANSACTIONS OF THE NORDIC RHEOLOGY SOCIETY, VOL. 14, 2006 Out of plane rheological behaviour of paper: the effect of furnish composition, basis weight and drying shrinkage Tero Ponkkala, Vesa Kunnari,

More information