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Coal slurry is a mixture of solids (mined coal) and liquids (water or organic ) produced by a coal preparation plant.

Contents

 * 1Preparation


 * 2Environmental concerns
 * 2See also
 * 3References
 * 4External links

Preparation
To transform the coal ash into a slurry, coal is separated from non-combustable components (ash) and can be fractionated by particle size as well. Coal slurry can be transferred by pipeline or with specialized pumps such as a progressive cavity pump to pump the highly abrasive, corrosive and viscous coal slurry.

The scale of water usage and hence potential costs and problems is large. More than 7 billion tons of coal are mined per year (2010), using approximately 200 litres of water per ton. However, the amount of water required hinges on the surface characteristics of the coal being used.