Evaluation of gravity separation of minerals usually is accomplished with two indices. The first is liberation degree and the second is separation accuracy or Escort Probable (Ep). This research is a case study on ALBORZ_E_SHARGI coal washing plant wastes for the evaluation of two essential indices. It was found that the indices representing a numerical value can't give sufficient information required for decision. Thus efforts took place to improve previous indices and to represent a method for accurate characterization of feed. It was obtained a suitable product for steel industry in two stages. Gravity concentration step by cut point of 1.75 t/m3 is necessary to produce primary concentrate followed by grinding it to -2mm and rewashing to obtain final concentrate. In the first step ash content reduced from 66% to 31.3% and the reduction of ash content to 14% in final washing was possible.
Abdollhy, M., & Zolghadri, M. (2007). Development of Coal Washability Index: A Case Study on The
ALBORZ_E_SHARGI Coal Washing Plant Wastes. Journal of Mining Engineering, 1(2), 9-22.
MLA
M Abdollhy; M Zolghadri. "Development of Coal Washability Index: A Case Study on The
ALBORZ_E_SHARGI Coal Washing Plant Wastes". Journal of Mining Engineering, 1, 2, 2007, 9-22.
HARVARD
Abdollhy, M., Zolghadri, M. (2007). 'Development of Coal Washability Index: A Case Study on The
ALBORZ_E_SHARGI Coal Washing Plant Wastes', Journal of Mining Engineering, 1(2), pp. 9-22.
VANCOUVER
Abdollhy, M., Zolghadri, M. Development of Coal Washability Index: A Case Study on The
ALBORZ_E_SHARGI Coal Washing Plant Wastes. Journal of Mining Engineering, 2007; 1(2): 9-22.
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