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Paper Information

Journal:   IRANIAN JOURNAL OF MINING ENGINEERING (IRJME)   2006 , Volume 1 , Number 2; Page(s) 9 To 22.
 
Paper: 

DEVELOPMENT OF COAL WASHABILITY INDEX: A CASE STUDY ON THE ALBORZ_E_SHARGI COAL WASHING PLANT WASTES

 
 
Author(s):  ABD ELAHI MAHMOUD, ZOU ALGHADRI M.
 
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Abstract: 

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.

 
Keyword(s): CHARACTERIZATION, COALWASTES, ALBORZ_E_SHARGIG, RAVITYCONCENTRATION, WASHABILITYINDE
 
References: 
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