井下充填泵站制浆能力改造研究

针对李雅庄煤矿井下充填泵站搅拌桶制浆能力不足的问题,设计了4搅拌桶交替制浆和高速制浆系统两种方案。4搅拌桶制浆能力10.4 m^(3)/h,注浆泵停机时间占比45.4%。高速制浆系统增加了气控定量水箱和高速搅拌机,通过定量快速加水和超高速涡流搅拌,制浆能力达24 m^(3)/h,超过注浆泵最大能力19.2 m^(3)/h,满足注浆泵连续工作,现场用时73 d提前完成空巷充填。

Reasonable Ball Size of Ball Mill for Preparing Coal Water Fuel and Forecasting Productive Capacity

By using the matrix theory, a 5 parameter grinding mathematical model is established. Based on the properties of feed coal and requirements for size distribution of final product, the model gives the required grinding probability for various particles and corresponding ball size distribution. By using this model, 3 different sizes of ball mill are designed and put into commercial use for coal water fuel. The forecasted ball mill capacity, the particle sizes and particle size distribution as well as the coal water fuel quality parameters are all in line with industrial operation results, which have proved the suitability of the model.