Decoating of Metal Scrap for Circular Metals Economy
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1 Decoating of Metal Scrap for Circular Metals Economy Scherpenzeel, 01 November 2017 PROASSORT.com
2 Agenda 1. Introduction 2. Circular Metals Economy (CME) 3. Harvest zinc from steel 4. Harvest tin from copper 5. Summary PROASSORT.com 2
3 CV Ph.D. Metals Engineering, TU Clausthal Manager, hot wide strip rolling mill Works Manager, cold rolling shop for Ni-based HPA Vice President, steel sheet production and coating Board Member, aluminium and steel processing Managing Partner, PROASSORT GmbH CEO, MUT Metall Unternehmertisch e.v. PROASSORT.com 3
4 Engineering Firm for CME PROASSORT.com 4
5 Asking for information Osteroy bridge, Norway Advanced Corrosion Protection for Steel Bridges: Thermal Sprayed Zinc (TSZ) DUPLEX Coating Industrial consortium with governmental support Please contact: PROASSORT.com 5
6 Agenda 1. Introduction 2. Circular Metals Economy (CME) 3. Harvest zinc from steel 4. Harvest tin from copper 5. Summary PROASSORT.com 6
7 Circular Economy Brussels, 2 December 2015 Today the European Commission adopted an ambitious new Circular Economy Package The proposed actions will contribute to "closing the loop" of product lifecycles through greater recycling... The plans will 1) extract the maximum value from all raw materials, 2) foster energy savings and 3) reduce Green House Gas emissions. Brussels, 14 March 2017 Today European Parliament adopted a Circular Economy Package in Straßbourg with vast majority. PROASSORT.com 7
8 Circular Metals Economy What does CME mean to Metals Industry? Maximum Value: Produce High Performance Alloys (HPA) with up to 100% recycled content. Energy saving: Melt High Performance Feedstock (HPF) and avoid refining ( cold metallurgy ). Green House Gas: Use green energy ( emetallurgy ). PROASSORT.com 8
9 Agenda 1. Introduction 2. Circular Metals Economy (CME) 3. Harvest zinc from steel 4. Harvest tin from copper 5. Summary One of the world s major CME project PROASSORT.com 9
10 Situation Share of galvanized steel is high and growing worldwide. Volume of galvanized new and old scrap expands. Black scrap with well-known alloy content is urgently needed. Zinc price is volatile and boosts on the long term run. Automotive industry is urging for closed loop recycling. PROASSORT.com 10
11 Problem Galvanized steel scrap as feedstock is limited in BOF route. Zinc is a mess for BOF off gas cleaning. BOF flue dust with 90% FexOx is mainly dumped. EAF waelz zinc oxid (est. 1888, BAT) causes heavy environmental burden and contains chloride and fluoride. PROASSORT.com 11
12 Best Available Technology I BOF dust with 4% Zn Dust dump BOF dust with 20% Zn Kiln dust with 60% Zn Zn ore roasting furnace PROASSORT.com 12
13 Best Available Technology II Clever? But prepared for time to come? BOF dust with 0,5% Zn PROASSORT.com 13
14 Circular Steel Economy ZINC PROASSORT.com 14
15 Best Available Technology III EAF dust with 20% Zn Kiln dust with 60% Zn Zn ore roasting furnace PROASSORT.com 15
16 Solution PROASSORT DeZINCing Technology Chemical reactor engineered as vibrating conveyor (world patent). Superior electro-chemical condition; optimal conveying. Continuous high-duty, low cost process. Rewinning of pure dry zinc sulphate for input near zinc eletrolysis. OPEX for dezincing and zinc sulphate harvesting about 30 to 40$ per ton scrap. Zinc sulfate sales > 40$ per ton scrap. PROASSORT.com 16
17 30kt per year Prototyp PROASSORT.com 17
18 New scrap and leach PROASSORT.com 18
19 Pickling process PROASSORT.com 19
20 Basic Life Cycle Assessment DeZINCing vs. Waelz Process for t galvanized steel scrap Energy saving: 36 GWh or 74% Green House Gas reduction: t CO2 or 88% Halogen loaded Waste Water prevention: m³ Source: TU Clausthal, 2008 PROASSORT.com 20
21 Basic Business Case tpa Steel tpa Foundry Gross Profit (Mio. EUR) 15,00 8,50 OPEX (Mio. EUR) 3,50 2,50 CAPEX (Mio. EUR) 1,50 1,00 EBT (Mio. EUR) 10,00 5,00 ROI (a) 1,25 1,2 PROASSORT.com 21
22 Agenda 1. Introduction 2. Circular Metals Economy (CME) 3. Harvest zinc from steel 4. Harvest tin from copper 5. Summary PROASSORT.com 22
23 Some facts and figures about tin on copper World refined tin metal usage is some 330kt, heavy shortfall between offer and demand predicted. In Germany we use some 20kt of refined tin metal, thereof 3kt for copper coating. Tin coated copper stampings are mainly used in power electronics, demand is strong and growing. PROASSORT.com 23
24 Tin coated copper & brass sheet and semi products PROASSORT.com 24
25 Tin on copper as barrier for CME On coated copper scrap the tin completely looses its value. The copper price is massively reduced. Only pure tin-coated copper scrap is remelted to bronze. Other copper alloys like brass or HPA have to be multi-step refined. Alloy elements like Sn, Ni, Zn return to dust and slag. Sn: $ per ton Ni: $ per ton Zn: 3.000$ per ton PROASSORT.com 25
26 PROASSORT.com 26
27 German Raw Material Efficiency Price 2016 Nominated Detinning of Copper PROASSORT.com 27
28 Detinned pre-consumer scrap PROASSORT.com 28
29 Very important by-product: Tin(IV)Oxid Product specification Residual moisture: ~ 2 % Sulfur content ~ 1 % Tin met. : ~ 60 % PROASSORT.com 29
30 Agenda 1. Circular Metals Economy 2. Harvest zinc from steel 3. Harvest tin from copper 4. Summary PROASSORT.com 30
31 Summery CME is metals survival training. CME awaits disruptive technologies, processes and decisions. There are mighty tools in the box to step forward. When you think about coating, reflect recycling! PROASSORT.com 31
32 You are heartily invited to contact us Dr.-Ing. Hans-Bernd Pillkahn Managing Partner PROASSORT GmbH Bärenstein 5 D Werdohl Fon Mobil hb.pillkahn@proassort.com proassort.com PROASSORT.com 32
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