Proven Technology + Cost Effective + Perfect Service A Lifetime Partner in Engineering, Procurement, Construction, Operation, Maintenance, Project Management
TECHNOLOGY FOR SLAG PROCESSING --Slag Granulation Plant (SGP)
1 Features of BOF Slag 2 Traditional Slag Processing Technology 3 SGP Principle 4 Characters of SGP
5 SGP Composition 6 Energy & Medium Consumption 7 Series of SGP 8 Utilization of SGP Iron & Slag 9 Engineering Applications
1. Features of BOF Slag
Production Rate & Classification of BOF Slag Slag Production Rate:8-12% Classification: Slag of Low Viscosity A Type Thickness: 30~80mm B Type Thickness: 80~120mm Slag of High Viscosity C Type Thickness: 120~200mm D Type Thickness: 200~450mm
Features of BOF Slag High temperature (up to 1500 ) Wide variation in viscosity High alkalinity High difficulties in disposal Easy to explode when encountering with water High contamination Splashing Job Site
2. Traditional Slag Processing Technology
Overview of Traditional Slag Processing Technology Traditional Technology Granulating Tech. Blocking Tech. Powdering Tech. Wind Quenching Water Quenching ISC Splashing Splashing in Closed Box Slag of Low Viscosity Slag of High Viscosity Molten slag
Wind Quenching Crane Grab bucket Slag pot Liquid slag Fan Slag pool Features:Low adaptability to slag viscosity High risk, easy to explode Low efficiency & high contamination, iron contained in slag easy to be oxidized
Water Quenching Crane Slag pot Grab bucket Slag pot car Liquid slag Slag pool Water nozzle Features:Low adaptability to slag viscosity High risk, easy to explode Low efficiency & high contamination
ISC Traveling crane Slag pot Water spraying Pump Water treatment system Clamshell crane Slag pot & carriage Pan Slag transforming car Water tank Features:Low adaptability to slag viscosity Low quality of finished slag Long flowchart & low efficiency High contamination & high operating cost
Splashing Crane Slag pot Liquid slag Water nozzle Slag pot car Features:Low quality of finished slag Long flowchart, low efficiency & high contamination
Splashing in Closed Box Slag pot car Water nozzle Grab bucket Slag tank Conveyor Slag Features:Low quality of finished slag Long flowchart, low efficiency & high contamination Slag needs to be naturally cooled to certain degree before being poured into slag tank, otherwise easy to explode
Developing Orientation of Technology for Steel-making Slag Processing Situation Faced With Metallurgical Enterprises Shortage of Resources Environmental Deterioration Energy & Capital Consumption Developing Orientation Cleaning Flowchart Shortening Recycling
3. SGP Principle
R&D of SGP 1995 Patented tech. tech. purchased from from Russia Independent Development & Improvement 1998 Successfully put put into into production first first SGP SGP Continuous Innovations Present Series of of SGP SGP 21 21 sets sets in in operation 51 51 Patents in in China 10 10 Overseas patents
Principle Cooling Water Steam Sudden Cooling Crushing Solidification Molten Slag Use of different contraction of slag and iron Good Separation of Slag from Iron Use of medium for primary cooling & crushing, and use of separated space High Safety Adequate granulation Good Stability Granulated Slag
4. Characters of SGP
Merits of SGP: Short Flow Dwell time: 2 minutes Small land occupation(10m 10m) Cleanliness Centralized exhaust of steam, good for installation of dedusting device Qualified Slag Good separation of slag from scrap Recovery rate of iron >85% (for A type slag) Even granulated slag,easy for post-treatment & utilization High Safety Slag Granulation Plant
Example:SGP Shop of Xinjiang Bayi Steel-making Plant
Original Plant(24m 139m) Processed with Splashing Approx. 360,000 t annual capacity After Revamping (24m 139m) Application of 2 sets SGP Only a few processed with Splashing Annual capacity increased to 540,000 t
Good Separation of Slag from Iron Blocky iron Slag Flaky iron
Particle Size Distribution of SGP Finished Slag wt % 70 60 50 40 30 20 10 0 58.7 13.7 14.1 10.5 3.0 >10 5-10 1.25-5 0.3-1.25 0.3 Particle Size (mm)
5. SGP Composition
S G P Stack Slag pot tilting machine Slag pot Slag skimmer Dedusting device Slag pot & carriage Driving assembly Drum Bucket elevator Cooling water Slag Storage bin Water treatment system Sewage Conveyor Electric control system Granulated iron Magnetic separator
Composition Main Body Auxiliary System Feeding System Water Treatment System Steam Exhausting System Finished Slag Transporting & Processing System Electric Control System
Main Body Platform Slag Receiver Water Spray Assembly Main Body Driving Assembly Supporting Rollers
Auxiliary System Steam Exhausting System Auxiliary System Feeding System Water Treatment System Finished Slag Transporting & Processing System
Feeding System Slag pot tilting machine Support slag pot and pour slag into the slag receiver of SGP Slag skimmer Clean molten slag of high viscosity which can not outpour naturally in slag pot, and skim them into the hopper of SGP
Slag pot tilting machine Slag skimmer
Job Site Photos Tilting machine Slag skimmer Tilting machine Slag skimmer
Water Treatment System Control valve system Settling pond
Steam Exhausting System Stack Dedusting system
Finished Slag Transporting & Processing System Combination conveyor Transport slag from discharge port of SGP to vibration sieve Vibration sieve Preliminary separation of slag from iron Bucket elevator Transport slag from discharge port of vibration sieve to vibrating feeder
Vibrating feeder Evenly feed slag from bucket elevator to magnetic separator Magnetic separator Magnetic separation of slag from iron Storage bin Separated slag & iron into respective storage bin with valve at the bottom, then transported by truck
Combination conveyor Vibrating feeder Magnetic separator Vibration sieve Bucket elevator Storage bin
Electric Control System Console (HMI) Cubicle Switchboard PLC Control Cabinet Converter Distribution Cabinet MCC Console (HMI) Instrumentation
Process Layout Sectional Drawing for Ningbo Steel Crane Tilting machine Drum Slag skimmer Stack dedusting Vibrating feeder & Magnetic separator Conveyor Storage bin (for magnetic) Storage bin Bucket elevator
Process Layout Axonometric Drawing for Ningbo Steel
6. Energy & Medium Consumption
Processing of 1 ton slag: Water:0.25-0.3 t Electricity:Approx. 6kW h Compressed Air:Under 800m 3 /h (TYPE-B)
7. Series of SGP
Seriation Correspondence Table of SGP Capacity VS BOF(EAF) Capacity Capacity of BOF(EAF)(t) 150 ~100 SGP Nominal Capacity(t/min) 2 1 Series of SGP Design Feature Vertical Dual-Chamber Tilted Equipment Type TYPE-A TYPE-B TYPE-C Applicability A, B Type Slag A, B, C Type Slag A, B, part of C Type Slag
Features of Various SGP Single Chamber Vertical Type Features: Slag middle intake, up outlet Adapt for A, B type slag, not applicable for C, D type slag Slag could be blocked in slag receiver, regular clean-up needed Low processing capacity TYPE-A Less maintenance work Relatively low safety
Dual-Chamber Type, improved product Features: Slag top intake, bottom outlet High processing capacity Applicable for A, B, C type slag Low water level, high safety Not applicable for processing slag of high iron content TYPE-B
Tilted Type, update of TYPE-A Features: Slag middle intake with high inclination angle Fluent slag intake than TYPE-A Wider processing range of slag than TYPE-A High stability, less maintenance TYPE-C Effective volume of chamber decreases as the inclination increases Safety between TYPE-A & -B
8. Utilization of SGP Iron & Slag
Performance of SGP Slag Chemical Component of SGP Slag Component f-cao TFe FeO CaO MgO SiO 2 Al 2 O 3 P 2 O 5 MnO S Before processing 7.04 26.07 18.91 40.29 9.43 7.87 1.93 1.87 3.92 0.04 After processing 2.65 25.26 16.91 39.71 9.20 8.51 1.50 1.79 4.09 0.04
Utilization of SGP Iron & Slag Iron Direct to BOF Raw Material for Sinter Micro Powder Concrete Capable of Plant Adherence New Type of Building Material : Artificial Marble, Wear-resisting Ground Tiles
Road Laying To Sinter Cement Aggregate
Artificial Marble Derusting Abrasive Permeable Material Wear-resistant Floor Asphalt Filler
9. Engineering Applications
First Set of SGP Model: TYPE-A Capacity: 1t/min Put into production: 1998
SGP for Baosteel No.1 Steel-making Plant Model: TYPE-A Capacity: 1t/min Put into production: 2005
SGP for Masteel Line B Model: TYPE-B Capacity: 2t/min Put into production: Mar, 2007
SGP for Xinjiang Bayi Iron & Steel Model: TYPE-B Capacity: 2t/min Put into production: Sep, 2008
No.2 SGP for Baosteel EAF Model: TYPE-C Capacity: 1.6t/min Put into production: Feb, 2009
Schedule of Engineering Applications SN Clients Qty.(set) 1 2 No.2 Steel Making Plant of Baosteel Branch No.1 Steel Making Plant of Baosteel Branch Put into production 2 98/05 3 03/04/05 3 EAF Plant of Baosteel Branch 2 06/09 4 Nanchang Iron & Steel Co., Ltd 1 04 5 Xuanhua Iron & Steel Co., Ltd 1 05 6 Shanghai No.1 Iron & Steel Co., Ltd 1 05
SN Clients Qty. (set) Put into production 7 Masteel No.4 Steel Slag Plant 3 07/08/09 8 Shanghai Pudong Iron & Steel Co., Ltd 2 07/09 9 Xinjiang Bayi Iron & Steel Co., Ltd 2 08/09 10 Shanghai Meishan Iron & Steel Co., Ltd 2 08/09 11 India JSW Steel Ltd 2 09
Projects in progress SN Clients Qty.(set) 1 Ningbo Iron & Steel Co., Ltd 2 2 Jiuquan Iron & Steel Co., Ltd 3 3 Weifang Iron & Steel Co., Ltd 2 4 Dragon Steel Corporation, Taiwan China 3 5 Posco, Korea 6 6 Hyundai, Korea 3 7 Usiminas, Brazil 3 8 Sumitomo, Japan
CIMM GROUP THANK YOU! For detailed information please visit our website at www.cimmuk.com Tel :086-411-82511728 Fax:086-411-82511722 E-mail: cimm@cimmuk.com