Page 24 - Technology Compendium

CSIR-IMMT/MIN - 13

Technology for coking coal fine beneficiation by column flotation

Advantages / Salient Technical Features Scale of Development

• The advance flotation column system, which has • Technology Demonstration (Current TRL
been designed at CSIR-IMMT, can increase yield as Level : 07)
well as quality of concentration.
• This has been demonstrated at West Bokaro, Tata Commercialization Status
Steel and Sudamudih, BCCL, Dhanbad to recover the • Ready for commercialization
carbon values from rejected ultra-fine coals.

Techno-economics
Problem being addressed • NA
• Carbon value recovery from coking coal fines

Technology Package
Environmental Considerations (if any) • Concept to Design
• Environment Friendly

Major Raw Materials to be Utilized
• Coking coal fines

IPR Status / Details (India/Abroad)
• Process Know how

Application/Uses
• Around 15-20% below 0.5 mm sized coal is generated
during crushing of fines for beneficiation of coal using
heavy media or jig process. At present, flotation cells
are being used to recover carbon values with desired
ash content. However, the conventional cells are not
performing as per the capacity due to ineffective
generation of bubbles and mixing effect.

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