Coaltech Research Association

Additional Regional Gravity Survey of the Waterberg Coalfield and Regional Interpretation of the Gravity Geophysical Data

by C.J.S. Fourie & R.H. Stettler | November 2010

R1500,00

Description

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Dry Processing of Coal – Progress Report: Tests Conducted on the IMS / Slater Coal Marketing Allair Dry Jig

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Test work on a dry jig installed at a Balmoral site, covering coal sized below 50 mm and duff below 12 mm, for producers considering waterless beneficiation.

What this report foundA 30 tonne per hour pilot Allair dry jig upgraded run of mine coal to thermal coal specification, but could not effectively beneficiate finer duff.

R1500,00

R1500,00

GJ de Korte

201613 pages

What this report found

A 30 tonne per hour pilot Allair dry jig upgraded run of mine coal to thermal coal specification, but could not effectively beneficiate finer duff. Cut point densities and EPM values matched other dry processing equipment, though the jig appeared to give better control of the parameters governing separation. Four tests ran on run of mine coal and two on duff.

Coal Mine Acid Mine Drainage Treatment and Sludge Processing

2010

Laboratory evaluation of acid drainage treatment paired with thermal recovery of reagents from the resulting sludge, with capital and operating cost estimates for mine water planners.

What this report foundA modified alkaline barium calcium process was tested on coal mine acid drainage, using calcium hydroxide neutralisation, hydrogen sulphide metal removal and...

R1500,00

R1500,00

What this report found

A modified alkaline barium calcium process was tested on coal mine acid drainage, using calcium hydroxide neutralisation, hydrogen sulphide metal removal and barium carbonate sulphate removal. Gypsum formation during water treatment fell by 80 per cent, cutting the sludge sent to costly downstream processing to a fifth. Temperature, reaction time, reagent ratios and feed particle size affected thermal treatment of the sludge.

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