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1/15/2015COREX 20001 COALS FOR COREX PROCESS dr kalyan sen, Director Central Fuel Research Institute, P.O. FRI, Dhanbad 828108.

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Presentation on theme: "1/15/2015COREX 20001 COALS FOR COREX PROCESS dr kalyan sen, Director Central Fuel Research Institute, P.O. FRI, Dhanbad 828108."— Presentation transcript:

1 1/15/2015COREX COALS FOR COREX PROCESS dr kalyan sen, Director Central Fuel Research Institute, P.O. FRI, Dhanbad

2 1/15/2015COREX BIHAR, ORISSA, M.P, KARNATAKA and GOA IRON ORE IRON ORE: proven Mt Resource Reserves, Bt Haematite Magnetite - 3.1

3 1/15/2015COREX WHY NOT COKE-OVEN BF ROUTE ? 6High cost involvement 6Stringent specifications of raw materials 6not eco-friendly

4 1/15/2015COREX SR PROCESS < COREX (Voest Alpine, Australia ) < HISMELT (Hismelt Corpn., Australia) < DIOS ( JISF, Japan) < AISI (DOE, USA) < ROMELT (Moscow Inst. Steel & Alloy, Russia)

5 1/15/2015COREX 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

6 1/15/2015COREX QUALITY PARAMETERS for COREX PROCESS Preferred limit, % FC > 55 VM <20increseless Gasifn. Temp., low FC high heat demand, soot Moist 5-7increaseless Gasifn. Temp., difficulty in flow of coal Ash <20reducehigh FC low coal rate, less slag low Si - level

7 1/15/2015COREX % 14.0% 3.0% Prime coking LVC MVC HVC Semi-coking 19% 50% 15% 11% 6% Total Coal Reserves 209 Bt Non- coking Coking Others COAL SCENARIO IN INDIA

8 1/15/2015COREX Availability of Coal for COREX process

9 1/15/2015COREX Deposits of iron ore/ Coal

10 1/15/2015COREX Judicious beneficiation of available coal is a necessity

11 1/15/2015COREX Beneficiation strategy Category I Category I: Non-coking coal (ash 30-40%) Cleans 75-80% (ash 25%) Reject (ash 60-65%) (FBC boiler) Jigging

12 1/15/2015COREX Beneficiation strategy …... Category II Category II: Non-coking coal (ash > 40%) Cleans (40-45%) (A 34%) Power house Reject (ash 55-65%) (FBC boiler) X 100/75 mm 20/25 mm screen Undersize, A <40% Oversize, A >45% Jig Deep washing Cleans (30-35%) (A <25%) Corex plant

13 1/15/2015COREX Category III Category III: LVC coal (ash > 35%) Beneficiation strategy …... 3-pdt Jig4-pdt washing User Yld% (A%) Total Cls (17-18) Steel Jig Cleans50 (22-24)-- Corex Cleans II (25-30) Corex** Middling20-22 (34)20-22 (33-35) Power Reject28-30 (60-65)25-30 (55-65) FBC

14 1/15/2015COREX 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


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