Real-time Plant Efficiency Measurement
200230 pages
Assessment of the measurement and control equipment available to coal preparation plants, with recommendations for plant metallurgists on which instruments to add first.
No single method gives a continuous, real time report on how a coal preparation plant is performing. Mass meters converted to yield values, on-line ash and moisture monitors, load cell chutes and automatic medium density control together supply most of what is needed. Measuring discard and slimes tonnages, particularly slimes disposal, remains the weakest point in plant accounting.
Contents
- INTRODUCTION4
- OTHER CONSIDERATIONS5
- Multiple cyclones in a module5
- Control of medium density6
- Control of product quality7
- Quality of different size fractions8
- Moisture content9
- WHAT WE WOULD LIKE TO HAVE10
- WHAT IS AVAILABLE?10
- Mass meters11
How it opens
When reference is made to the efficiency of a coal preparation plant or a specific coal processing unit, the sharpness of separation is usually inferred. The sharpness of separation reflects the ability of a unit, such as a dense-medium cyclone, to selectively separate coal and non-coal particles from each other based on the difference in their relative densities.
How it concludes
R1500,00
Description
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Ion exchange treatment of acid mine drainage from a closed KwaZulu-Natal colliery was piloted and shown to give effluent free processing, converting the salts into saleable products rather than sludge and brine. Reverse osmosis had previously produced water of discharge standard but left both. Combined flow from the two mine compartments averaged 4.6 megalitres a day.