Research on Deep Screening Technology of Large Coking Coal Preparation Plant
At present,the deep screening in coal preparation plants is generally set as a one-way process,and the screening range is limited,resulting in the reduction of screening efficiency.Therefore,the design and validation study of deep screening technology in large coking coal preparation plants is proposed.According to the actual screening requirements and standards,this paper sets the grading screening particle size standard,calibrates the upper and lower sieves,use the form of multi-single combination treatment,maximizes the screening range within a reasonable range,develops a multi-unit combination deep screening process,and uses the secondary tensioning elastic side screen to achieve deep screening treatment.The final test results show that after three stages of measurement,the efficiency of the deep screening of Coal Preparation Plant A has been greatly improved,which can reach more than 60％,and the screening accuracy has also been greatly improved,which can reach more than 80％.This shows that the screening technology and structure has better practical application effect,faster screening speed,controllable error,and has practical application value.
large coking coalcoal preparation plantdeep screeningscreening technologycoal yard positioningscreening standard
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