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Applicability of a Dense Medium Cyclone and Vorsyl Separator for Upgrading Non-Coking Coal Fines for Use as a Blast Furnace Injection Fuel

IR@AMPRI: CSIR-Advanced Materials and Processes Research Institute, Bhopal


Field	Value

Title	Applicability of a Dense Medium Cyclone and Vorsyl Separator for Upgrading Non-Coking Coal Fines for Use as a Blast Furnace Injection Fuel

Creator	Dhillon, P.H Kundu, A.K Majumdar, A.K Choubey, S J P, Barnwal Shah, H

Subject	Mineral Processing/Beneficiation

Description	Replacement of metallurgical coke by high injection rates of thermal coal into the blast furnace is an important technology as it reduces the cost of hot metals significantly. However, one of the main problems that prevents the use of thermal coals is their high mineral-matter contents. Although, the ash content of coals to be injected in a blast furnace should be as low as possible, a maximum of 16% ash is acceptable. A non-coking coal sample from Chhattisgarh area, India, having a feed ash content of around 27% was collected for beneficiation studies to a grade acceptable for the injection purposes.A series of experiments were conducted in a 76-mm diameter dense-medium cyclone (DMC) and a Vorsyl separator (VS). It is observed that a clean coal having around 16% ash can be produced using both the cyclones if the variables are properly optimized. Further, it is observed that at the same ash level the yield of clean coal was 5%–6% more in VS than in DMC. It has also been demonstrated that at the same ash level, the magnetite medium stability in a VS was better than a DMC.

Date	2007

Type	Article PeerReviewed

Identifier	Dhillon, P.H and Kundu, A.K and Majumdar, A.K and Choubey, S and J P, Barnwal and Shah, H (2007) Applicability of a Dense Medium Cyclone and Vorsyl Separator for Upgrading Non-Coking Coal Fines for Use as a Blast Furnace Injection Fuel. International Journal of Coal Preparation and Utilization.

Relation	http://ampri.csircentral.net/921/