Stainless steel slags and the use of ChemApp - RWTH Aachen ...

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Stainless steel slags General - By-product/waste of stainless steel production - Metallurgical functions: * Oxidation shielding * Impurity removal * Thermal insulation Amounts - Slag-to-steel ratio: 275 kg slag / 1000 kg steel - Global stainless steel production: 25 Mt steel (source: ISSF,IISI) ~ 7 Mt stainless steel slag / year
Page 1 and 2: Stainless steel slags and the use o
Page 3: Katholieke Universiteit Leuven
Page 8 and 9: I. Pyrometallurgical processing Ve
Page 10 and 11: II. Phase relations in materials sy
Page 12 and 13: Stainless steel slags
Page 16 and 17: Assumptions: density = 2.5 ton/m³,
Page 18 and 19: Stainless steel production 3-step
Page 20 and 21: Process Modelling: Chromium recover
Page 22 and 23: The EAF process Slag issues during
Page 24 and 25: EAF operations
Page 26 and 27: Temperature evolution
Page 28 and 29: Slag composition
Page 30 and 31: Slag Sampling Schematic diagram of
Page 32 and 33: Results - Final CrO x values (tappi
Page 34 and 35: Results - Evolution slag microstruc
Page 36 and 37: Slag microstructure - spinel partic
Page 38 and 39: Results: liquidus Tests in differe
Page 40 and 41: Other examples of process modelling
Page 42 and 43: Dumping Valorisation
Page 44 and 45: Slow slag solidification 24 h
Page 46 and 47: Slag valorisation chain Required sl
Page 48 and 49: EAF = Al 2 O 3 containing Slag comp
Page 50 and 51: Slag disintegration FS/CC slag aft
Page 52 and 53: Cause of slag disintegration Prese
Page 54 and 55: Laboratory experiment Slag composit
Page 56 and 57: Assumptions Thermodynamic equilibri
Page 58 and 59: Mineralogy Experiment Equilibrium S
Page 60 and 61: Air-cooled solidification pO 2 ind
Page 62 and 63: Microstructural calculations CaO-S

Stainless steel slags and the use of ChemApp - RWTH Aachen ...

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