古交炼焦煤选煤厂提高选煤产率的新方法

On the condition of ensuring the ash standard situation, raising the maximum production of clean coal is of great significance for coking coal preparation plant. In this paper, we refer to a coking coal in Gujiao coal testing data, put forward initial low density separation for coal, after that complete ultra-fine grinding mine for the low density coal in order to reach the coal gangue full dissociation, and then using flocculation flotation method for sorting, Through the initial separation of clean coal and flotation of clean coal ratio, we can get the biggest coal production to achieve the purpose of cleaned coal production while maintaining the original ash requirements unchanged. According to the experimental data, the traditional separation methods are going under the 1.47g/ml separation density separation, with ash content as 9% and clean coal production rate as 80%. With the separation scheme, the initial separation of clean coal production is 68.52%, ash content 8.52%, and ultrafine grinding mine after flotation clean coal production is 61.80%, ash content 11.59%.The mixture of the two, the coal production rate is 84.61% and ash content is 8.93%. Each index is far superior to the traditional separation methods.