Stability and Neutralisation Capacity Of Mine Backfill Formed by Neutralisation of Acid Mine Drainage With Fly Ash
by Leslie F Petrik | February 2007
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Description
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Nine bituminous coals from the Witbank, Waterberg and Soutpansberg coalfields all formed compacts without a binder, and the process worked better with coking coals. Reactive maceral content, free swelling index and Hardgrove grindability index governed briquette strength, with ash and kaolinite contents also contributing to bonding. Briquetting pressure, feed moisture and particle size distribution controlled the outcome.