De-ashing of high-ash Thermal Coal

1.

Title of Product/Design/Equipment

De-ashing of high-ash Thermal Coal

2.

IPR Status

Patent/Abroad IPR Details

-

3.

Application/Uses

4.

Salient Technical Features including Competing Features

The process is based on treating the high-ash thermal coal for reducing the ash level by adopting the gravity concentration and flotation techniques. The ash level can be reduced to 10-15% from a feed of 30-35% ash depending on the coal characteristics

5.

Level/Scale of Development

The process has been developed on 5 tpd scale. Scale-up possible.

6.

Environmental Considerations

Installation of tailings disposal units shall be needed

7.

Status of Commercialization

Ready for commercialization

8.

Major Raw Materials to be Utilized

High-ash thermal coal, flotation reagents

9.

Major Plant Equipment and Machinery Required

Crusher, jig, spiral concentrator, flotation bank, thickeners, filters

10.

Techno-Economics

Available on demand

Chemical requirement cost is about Rs.

against product cost of about Rs.

per ton of iron oxide production.

11.

Technology Package

(a) Process knowhow (b) Details of equipment (c) Quality assurance methods. Assistance in setting up the plant on separate terms.