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System and method for beneficiating ultra-fine raw coal with spiral concentrators
System and method for beneficiating ultra-fine raw coal with spiral concentrators
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机译:利用螺旋选矿机选矿超细原煤的系统和方法
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摘要
A system and method is provided for beneficiating, or “cleaning”, ultra-fine raw coal with spiral concentrators. The inventive system includes multiple pre- and post-classification systems to size the finer sized raw mineral to develop a pre-sized mineral fraction within a first size range (approximately 0.15 mm by 0.044 mm). The pre-sized mineral fraction is fed to at least one spiral concentrator, wherein the at least one spiral concentrator separates the pre-sized mineral fraction into clean mineral and refuse by specific gravity. Water may be added to the inlet of the at least one spiral concentrator to maintain a constant flow through the at least one spiral concentrator. Additionally, residual minus 0.044 mm particles may be removed from the clean mineral output by a post classification system.
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