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COALS FOR COREX PROCESS dr kalyan sen, Director Central Fuel Research Institute, P. O. COALS FOR COREX PROCESS dr kalyan sen, Director Central Fuel Research Institute, P. O. FRI, Dhanbad 828108 3/18/2018 COREX 2000 1

IRON ORE: proven 13460 Mt ORE Resource BIHAR, ORISSA, M. P, KARNATAKA and GOA IRON ORE: proven 13460 Mt ORE Resource BIHAR, ORISSA, M. P, KARNATAKA and GOA Reserves, Bt Haematite - 9. 6 Magnetite - 3. 1 3/18/2018 COREX 2000 2

WHY NOT COKE-OVEN BF ROUTE ? 6 High cost involvement 6 Stringent specifications of WHY NOT COKE-OVEN BF ROUTE ? 6 High cost involvement 6 Stringent specifications of raw materials 6 not eco-friendly 3/18/2018 COREX 2000 3

SR PROCESS < COREX (Voest Alpine, Australia ) < HISMELT (Hismelt Corpn. , Australia) SR PROCESS < COREX (Voest Alpine, Australia ) < HISMELT (Hismelt Corpn. , Australia) < DIOS ( JISF, Japan) < AISI (DOE, USA) < ROMELT (Moscow Inst. Steel & Alloy, Russia) 3/18/2018 COREX 2000 4

WHY COREX PROCESS 4 Flexibility in raw materials • medium to low grade iron WHY COREX PROCESS 4 Flexibility in raw materials • medium to low grade iron ore • iron waste & scraps • non-coking/ LVC coals 4 Less sensitive to physico-chemical characteristics of coal 4 Eco-friendly 4 Low capacity, low investment cost 3/18/2018 COREX 2000 5

QUALITY PARAMETERS for COREX PROCESS Preferred limit, % FC > 55 VM <20 increse QUALITY PARAMETERS for COREX PROCESS Preferred limit, % FC > 55 VM <20 increse Moist 5 -7 increase Ash <20 3/18/2018 reduce less Gasifn. Temp. , low FC high heat demand, soot less Gasifn. Temp. , difficulty in flow of coal high FC low coal rate, less slag low Si - level COREX 2000 6

Total Coal Reserves 209 Bt Others 14. 0% Coking Noncoking 15% Semi-coking HVC MVC Total Coal Reserves 209 Bt Others 14. 0% Coking Noncoking 15% Semi-coking HVC MVC 50% LVC 19% 3. 0% 83. 0% 6% 11% Prime coking COAL SCENARIO IN INDIA 3/18/2018 COREX 2000 7

Availability of Coal for COREX process 3/18/2018 COREX 2000 8 Availability of Coal for COREX process 3/18/2018 COREX 2000 8

Deposits of iron ore/ Coal 3/18/2018 COREX 2000 9 Deposits of iron ore/ Coal 3/18/2018 COREX 2000 9

Judicious beneficiation of available coal is a necessity 3/18/2018 COREX 2000 10 Judicious beneficiation of available coal is a necessity 3/18/2018 COREX 2000 10

Beneficiation strategy Category I: I Non-coking coal (ash 30 -40%) Jigging Cleans Reject (ash Beneficiation strategy Category I: I Non-coking coal (ash 30 -40%) Jigging Cleans Reject (ash 60 -65%) 75 -80% (ash 25%) (FBC boiler) 3/18/2018 COREX 2000 11

Beneficiation strategy …. . . Category II: Non-coking coal (ash > 40%) II X Beneficiation strategy …. . . Category II: Non-coking coal (ash > 40%) II X 100/75 mm 20/25 mm screen Oversize, A >45% Undersize, A <40% Deep washing Jig Cleans (40 -45%) Cleans (30 -35%) (A 34%) Reject (ash 55 -65%) (A <25%) Power house Corex plant (FBC boiler) 3/18/2018 COREX 2000 12

Beneficiation strategy …. . . Category III: LVC coal (ash > 35%) III 3 Beneficiation strategy …. . . Category III: LVC coal (ash > 35%) III 3 -pdt Jig Yld% (A%) Total Cls 4 -pdt washing User Yld% (A%) --- 24 -27 (17 -18) Steel Jig Cleans 50 (22 -24) -- Corex Cleans II --- 18 -20 (25 -30) Corex** Middling 20 -22 (34) 20 -22 (33 -35) Power Reject 28 -30 (60 -65) 25 -30 (55 -65) FBC 3/18/2018 COREX 2000 13

REMARKS THE PROCESS EXHIBITS A POSITIVE PROFILE UNDER INDIAN CONTEXT HOWEVER, DETAILED STUDIES ON REMARKS THE PROCESS EXHIBITS A POSITIVE PROFILE UNDER INDIAN CONTEXT HOWEVER, DETAILED STUDIES ON IDENTIFICATION OF SUITABLE SOURCES AND CHOICE OF WASHING STRATEGY IS NECESSARY 3/18/2018 COREX 2000 14