Beneficiation of Cooking Coal By Column Flotation

Beneficiation of Cooking Coal By Column Flotation

 

Introduction

 

A national research organisation ( India) offers a process for beneficiation of cooking coal by column flotation.

 

In general for the steel industry, the ash percentage of coal should not exceed more than 18%.

 

In Indian coal the ash percentage is too high compared to the demand of steel plant.

 

In the coal washery the coal is crushed to particular size to get the low ash coal by heavy media  and fines and middling portion of the flotation to remove the ash content of the coal for final utilisation. In India particularly the cooking coal deposit is not much. So all the steps are to be taken to utilise the cooking coal as much as possible.

 

 In this process, the ash percentage is to be reduced from 35-40% to 16-18% from the tailing streams of the plant with 50% weight recovery. The work was cacyclonerried out for the carbon recovery from tailing stream of West Bokaro Coal.

 

Washery II. In TISCO at 100 kg/hr rate the column flotation work was done in laboratory. It was scaled up to 3-4 tons/hr and the pilot plant was designed and installed at the plant site. TISCO has now advertised the Global Tender for commissioning the commercial plant of the capacity of 40 tons/hr on the basis of this technology.

 

 

Marketing of the manufactured product

 

Marketing should be done by the licensee.

 

 

List of machinery/ equipmentCrusherBall millConditionerFlotation columnCentrifugeSlurry pumpsWash water reservairReagent pumpsFlowmetersVibrating screen

Chemical Industry, energy

 

Production cost - Rs. 500-600/ton

Selling price - Rs. 1200-1400/ton

Capital investment - Rs. 50 lakhs for 3-4 tons/hr capacity with control system

Profitability - Rs. 20-25 lakhs/year

 

 

Inputs RequiredRaw material

 

ROM coking coal/tailing of coal washery

 

 

Transfer Forms

 

Process know-how; Feasibility and techno-economics report; Design engineering; Guidance for installation and commissioning

 

 

Main Application

 

Energy

 

 

For further information please contact

 

Technology Bureau for Small Enterprises

APCTT Building, Qutub Institutional Area

P.O. Box – 4575

New Delhi – 110016, India

Tel.: 91—26864501, 26856276, 2696619/521

Fax : 91-11-26856274

E-mail : tbse@apctt.org

 

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