RAW MATERIAL HANDLING PLANT (RMHP)

The Raw Material Handling Plant (RMHP) receives the basic raw materials required for the steel making process from various sources through railway wagons and by road. These are stacked by stackers and reclaimed by reclaimers and distributed to various departments of VSP through conveyor system. The Iron Ore Fines, Iron Ore Lump, Sized Iron Ore, Limestone (BF&SMS grades), Dolomite (BF & SMS grades), Sand, Quartzite and Manganese lumps are stacked at Ore & Flux Yard. The Imported Coking Coal (ICC), Medium Coking Coal (MCC) , Boiler Coal (BC) are stacked in Coal Yard. Coke is sent directly to Blast Furnace after tippling from ore and flux wagon tipplers .

These raw materials are sent to various departments as indicated below:

Sinter Plant: Iron Ore Fines, Lime stone (BF), Dolomite, Sand and LD slag.

Blast Furnace: Sized Iron Ore, Limestone (BF)/ LD slag, Manganese Lump, Quartzite

and Coke.

SMS: Dolomite (SMS), Sized Iron Ore, Dolo chips.

CRMP: Limestone (SMS), Dolomite (SMS), Dolo chips.

TPP: Crushed Boiler Coal.

COCCP: Imported coking coal (ICC), Medium coking coal (MCC).

The Raw Material Handling Plant is divided into two sections Coal Handling Plant (CHP) and

Ore Handling Plant (OHP).

The facilities available in two sections are as follows:

COAL HANDLING PLANT ORE HANDLING PLANT

* 2 Wagon Tipplers * 3 Wagon Tipplers

* 5 Ground & 10 Track Hoppers * 10 Ground and 10 Track Hoppers

* Stock Yards ( 10 Beds) * Stock Yard (12 Beds)

* Boiler Coal Crushing Plant * Lump Ore Crushing Plant

* Stackers, Reclaimers * Lump Ore Screening Plant

and Stacker cum Reclaimer

. * Stackers and Reclaimers.

* Reclaiming Conveyors * Reclaiming Conveyors

* Stacking Conveyors *Stacking Conveyors

SALIENT FEATURES OF RMHP

· Peripheral unloading system for railway wagons coming directly up to pushers.

· Blender Reclaimers for blending of ores and flux in which the bucker wheel has a lateral motion across the bed.

· Wheel on Boom Reclaimers for reclaiming different materials from same bed in Ore & Flux yard and same type coals in CHP.

· 2 Ring Granulators for crushing of Boiler Coal.

· 3 Blender Reclaimers for blending of Iron ore fines and flux.

· PLC control of all systems.

· Drier for drying SMS Sized Ore.

· Preparation of Sized iron Ore for use in BF to enable close size range of raw materials.

· Dust Extraction system is provided at various locations of RMHP to absorb the dust generated during the process.

RAW MATERIAL SPECIFICATIONS:

RAW MATERIAL SPECIFICATIONS:

The iron- bearing burden materials are Iron Ore fines supplied from Bailadilla mines and manganese ore from the deposite in Vizianagaram district.

The various raw materials handled in the OHP are as follows:

Sl.No.	RAW MATERIALS
1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0 9.0 10.0 11.0 12.0 13.0 14.0	Iron Ore Fines. Iron Ore Lump. Sized Iron Ore. Limestone (BF grade). Limestone (SMS grade). Dolomite (BF grade). Dolomite (SMS grade). Sand. Manganese Lump. Quartzite Lump. Sponge Iron. Pellets. LD Slag. Coke.

The various raw materials handled in the CHP are as follows:

Sl.No.	RAW MATERIALS
1.0 2.0 3.0 4.0 5.0	Imported Coking Coal. Imported Soft Coking Coal Medium Coking Coal. Prime Coking Coal. Boiler Coal.

These Raw Materials are sent in different proportion to various customer departments as indicated below:

CUSTOMERS	RAW MATERIALS
1.COKE OVENS 2.THERMAL POWER PLANT 3.SINTER PLANT 4.BLAST FURNACE 5.STEEL MELT SHOP 6.CRMP	Imported coking coal, Medium coking coal and Primary coking coal. Boiler coal. Iron ore fines, Limestone (BFgrade),Dolomite(Bfgrade), Sand and LD Slag. Sized iron ore, Limestone (BF grade), Manganese lump, Quartzite lump, Coke, Sponge iron, Pellets and LD Slag. Sized iron ore and Dolomite (SMS grade). Limestone (SMS grade) and Dolomite (SMS grade).

RAW MATERIALS SPECIFICATIONS:

The different raw materials are stored in the beds of stockyards and Ground hoppers (GH) & Track hoppers (TH) and their identification, colour & sizes are as follows:

MATERIAL	SIZE
1. SMS Limestone returns 2. Limestone(BF grade) 3. Dolomite (BF grade) 4. Manganese lump 5. Sand/Quartzite fines 6. Sized iron ore 7. Iron Ore Lump 8. Iron Ore Fines 9.Limestone (SMS grade) 10. Dolomite (SMS grade) 11. Coke 12. Quartzite Lump 13. Sponge Iron 14. Pellets 15. LD Slag –SP -BF&SMS	-25mm. 6 to 40mm. 6 to 80mm. -40mm. 0 to 3mm 10 to 50mm -150mm -10mm -50mm -50mm 10 to 60mm 10 to 30mm 3 to 20 20mm -10mm 10 to 30

MATERIAL FLOW DIAGRAM OF COAL HANDLING PLANT (CHP)

MAXIMUM STORAGE CAPACITY AND NUMBER OF STOCK PILES IN RMHP

Material	No. of Stock piles & Approx size (M)	Storage capacity (days)	STOCK
			Tonnes	Cum
Lump Iron Ore Iron Ore Fines Sized Iron Ore LIME STONE Sintering Calcining DOLOMITE Sintering Calcining (Flux grade) Manganese Ore Sand Boiler Coal Imported Coking Coal Medium Coking Coal	2-150X30X11.7 3-325X30X11.72 2-170x30x11.70 2-90X30X10.9 2-200X30X10.9 2-140X30X10.9 1-90X30X10.9 1-70X30X11.7 1-50X30X11 2-290X30X5.5 2-290X60X5.5 5-290X50X8 2-290X25X8 1X290X60X8	24 32 44 40 47 40 48 44 35 30 50 43	116,039 343,543 133,907 39,613 97,165 65,773 19,806 22,489 7,574 135,850 312,396 72,640	47,636 163,592 54,656 24,758 60,728 41,108 12,379 9,778 5,410 1,69,812 3,90,495 90,800

Unloading facilities:

Facility	Numbers Provided
	Ore & Flux	Coal
a) Rotary Wagon Tippler b) Wagon Pushers c) Track Hopper d) Ground Hopper e) Transfer car	3 nos – 1200 tph 6 nos 10 nos 155 m3 each 10 nos 155 m3 each 1 no	2 nos – 850 tph 4 nos. 1 set 1 set 1 no

Stacking & Reclaiming facilites:

Facility	Ore & Flux yard	Coal Yard
a) Stackers b) Reclaimers c) Stacker cum Reclaimer	1400 tph ( 5 nos ) Twin Boom (Fixed Type ) 450 tph Wheel on boom Reclaimers ( 3 nos ) 1200 / 450 tph Blender Reclaimers ( 3 nos ) ----	850 tph ( 3 nos) Single Boom (Swivelling Type ) 550 tph Wheel on Boom Reclaimers (3 nos) ----- 850 / 550 tph ( 1no)

Crushing & Screening facilities:

Material	Type of Crusher	Feed Rate (TPH)	Feed Size (mm)	Nos Provided
Iron Ore Boiler Coal	Cone Crusher Ring Granulator Crusher	340 ( including circulating load) 550	-150 -250	3 2