SONG Jing-ling(Longshan Coal Preparation Plant;

• 1:Anyang Xinlong Coal Industry(Group) Co.
• 2:Ltd.
• 3:Anyang 455133
• 4:China)

Abstract：

The content of high-ash fine slime in slime water increase with the reduction of lower limit of separation and more and more complex coal depositional models.For this dind of fine slime,the common recovery methods are not effective.The typical inoperative facilities are disc-type pressure filter and plate and frame pressure filter.The latter has been used for fifteen years in Longshan coal preparation plant,the concentrations of slime in recirculating water were always more than 400 g/L.To resolve this problem,replaced the plate and frame pressure filter with belt one in 2010.The concentrations decrease to below 10 g/L,realize closed water circuit,improve clean coal yield,reduce environmental pollution.

Key Words： high-ash fine slime;slime;belt pressure filter;dehydration;recirculating water

Abstract:

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Author: SONG Jing-ling(Longshan Coal Preparation Plant;

DOI: 10.13226/j.issn.1006-6772.2013.02.025

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