Study on the correction method based on the ash compensation in the float-and-sink test ash of raw coal

In order to solve problem in traditional ash correction method,when the raw coal ash content variation,but the forecasted clean coal ash unchanged under the same theoretical separation density,so to better on line predict the clean coal ash,analyzed the raw coal sieve float-and-sink data and clean coal data from Dongpang coal preparation plant,considering fully the influence of the ash factors at the same time,presents the correction method based on the ash compensation in the float-and-sink test ash of raw coal,combined with the optimal method of objective function,by taking the actual production data of coal preparation plant as a example,given the specific calculation procedure.