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
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)