快浮指标的合理确定

Rational setting rapid floatation index

快浮指标是指导选煤厂生产的重要指标之一,许多选煤厂都用这一指标来指导生产。但目前快浮指标计算的方法并不科学,没有从原煤数质量预测的角度考虑,更没有考虑到原煤性质、入料量、分选密度、入料压力波动的影响。论文针对现有方法的不足,采用数理统计的理论和方法,基于原煤浮沉及分选指标,确定出初步的快浮指标,并考虑了相关波动因素的影响,对初步指标进行修正,所确定的快浮指标更科学合理。

The rapid floatation index is one of the important indexes to guide the production of the coal washery.Many coal washeries are applying the index to guide the production.But the present calculation method of the rapid floatation index is not scientific,never base on from the consideration of the raw coal quality prediction and even not base on the consideration of the influences of the raw coal property,feeding quantity,separation density and feeding material pressure fluctuation.According to the disadvantages of the present method,the mathematical statistics theory and method were applied to set up the primary rapid floatation index base on the raw coal setting and floating and separation indexes.Base on the consideration of the influences of the related fluctuation factors,the primary index was revised and the rapid floatation index set would be more scientific and rational.