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Coal Beneficia,on : The removal of unwanted impuri,es from raw coal to produce a saleable coal product without altering the chemical iden,ty of of the coal

Coal%Beneficiaon : The%removal%of%unwanted%impuri,es% … · Coal%Handling%&%Preparaon%Plant : % A%series%of%unitoperaons% interconnected%by% amaterial%handling%system%% % % %

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Coal  Beneficia,on:    

The  removal  of  unwanted  impuri,es  

from  raw  coal  to  produce  a  

saleable  coal  product  without  altering  

the  chemical  iden,ty  of  of  the  coal  

     

Coal  Handling  &  Prepara,on  Plant:    

A  series  of  unit  opera,ons  

interconnected  by  

a  material  handling  system          

Hydrophobic  Separa,on  

Principles  of  Coal  Prepara,on:  “Starts  at  the  coal  face”    

Size  Reduc,on  

Coarse  material  

Fine  material  

Size  Separa,on  

Density  Separa,on  

Density  Separa,on  

Coarse  discard  

Fine  coal  

Fine  discard  

Coarse  coal  

Ultra-­‐Fine  material  

Ultra-­‐Fine  discard  

Ultra-­‐Fine  coal  

Op,mising  Size  Distribu,on:  

•  Cheaper  to  treat  larger  parc,cles  

•  Possible  of  increased  yield  by  crushing  to  smaller  top-­‐size  

•  Need  to  determine  what  is  best  for  the  par,cular  coal    

Washability  &  Libera,on:  

Washability  &  Libera,on:  

Coal  Washability:  

Organic  Efficiency:  

•  Defined  as  the  ra,o  of  the  prac,cal  yield  over  the  theore,cal  yield  expressed  as  a  %  

•  In  prac,ce  organic  in-­‐efficiency  is  the  loss  of  recovery  yield  due  to:  1.  inefficiencies  in  process  equipment  used  2.  amount  of  near  density  material      (coal  à  discard      /      discard  à  product)