Highly metallised low Sulphur Directly Reduced Iron from Iron Ore Slime and Rejected or Middling Coal

1.

Title of Product/Design/Equipment

Highly metallised low Sulphur Directly Reduced Iron from Iron Ore Slime and Rejected/Middling Coal

2.

IPR Status

Patent/Abroad IPR Details

Patent Application No: 1320/KOL72013 & 1345/KOL/2013

3.

Application/Uses

Iron and steel making

4.

Salient Technical Features including Competing Features

The process utilises ~100% waste materials to yield a value added product. This invention is useful for converting steel plant wastes fines / mining waste fines such as iron ore slime/fines, middling and rejected coal containing more than 25 % ash into a highly metallised (Metallisation > 96%) low Sulphur (0.006%S) DRI suitable for induction furnace, electric arc furnace and blast furnace for iron and steel making.

5.

Level/Scale of Development

Laboratory scale: 1 to 5 kg

6.

Environmental Considerations

Generation of 150-200 kg of coal char per ton of DRI

No liquid effluent generated.

7.

Status of Commercialization

Ready for commercialization

8.

Major Raw Materials to be Utilized

(i) Waste / lean iron ore fines such as iron ore slime (ii) Waste / lean grade coal containing 25 to 65% ash such as Middling Coal,

Rejected Coal and likewise.

9.

Major Plant Equipment and Machinery Required

(i) Muffle furnace or Tunnel Kiln, (ii) Ceramic crucibles, (iii) Pelletizer etc.,

10.

Techno-Economics

Cost of the DRI produced to be approximately Rs. 13,000 / ton.

Chemical requirement cost is about Rs.

against product cost of about Rs.

per ton of iron oxide production.

11.

Technology Package

Complete flow-sheet with mass balance, Equipment details, Process description, Cost estimate and Product specification. Assistance in setting up the plant as per organization terms and conditions