高压辊磨机工艺参数对翠宏山某磁铁矿石粉碎行为的影响 高压辊磨机工艺参数对翠宏山某磁铁矿石粉碎行为的影响

为研究翠宏山某磁铁矿石在高压辊磨机中的粉碎行为，考察了比压力、辊隙对产品粒度特性和比能耗的影响。结果表明：高压辊磨机破碎产品粒度均匀性和破碎比均随辊隙增加而降低，新生成-8 mm粒级比功耗随辊隙增加先降低后提高；高压辊磨机破碎产品粒度均匀性和破碎比均随比压力增加而提高，新生成-8 mm粒级比功耗随比压力增加而降低。比功耗与破碎比存在近似的线性关系。相对于辊隙，比压力对高压辊磨机破碎效果的影响更大。试验结果可以为该磁铁矿石高压辊磨工艺设备参数的确定提供依据。

Effect of High Pressure Grinding Roll Operation Parameters on Crushing Behavior of a Magnetite from Cuihongshan

In order to investigate the high pressure grinding roll crushing behavior of a magnetite from Cuihongshan,the influences of specific pressure and roll gap on the product size distribution and specific energy consumption were tested. The results showed that:with the increase of roll gap,the uniformity factor of product size increased and reduction ratio dropped;consumption for new generated-8 mm fraction reduced with the increase of roll gap;with the increase of specific pressure,both the uniformity factor of product size and reduction ratio increased;consumption for new generated-8 mm fraction reduced with the increase of specific pressure. Approximate linear relationship exists between consumption and reduction ratio. Specific pres-sure of high pressure roller has more effect on crushing effect compared with roll gap. Test results can provide technique basis for the determination of high pressure roller mill process equipment parameters.