Basic situation of production and operation of sinosteel Chifeng Jin Xin Mining Co., Ltd.

The existing 1000 t/ day mining and dressing production runs well. In order not to leave a large empty area for open pit mining, the original design of sublevel caving method without sill pillar was changed to shrinkage stoping method. The mineral processing process is as follows: the raw ore is roughly crushed by jaw crusher, finely crushed by cone crusher and screened by heavy circular vibrating screen, and the product granularity is-12㎜. After entering the grinding system composed of ball mill and cyclone, the fineness of the product reaches -0.075㎜, accounting for 80%. The overflow product enters the flotation system, and the molybdenum concentrate product is obtained through one roughing, five cleaning and one scavenging. The dehydration of molybdenum concentrate adopts the technological process of concentration, filter pressing and drying. Concentrated by a high-efficiency concentrator, filtered by a box-type filter press, and the concentrated solution after the filter press is heated and dried. Finally, the molybdenum concentrate product with water content less than 10% was obtained. The monthly cumulative production index of 1- 18 tons is product output, ore treatment capacity of 252,900 tons, ore grade of 0.072% and theoretical recovery rate of 79.93%. The sales income is 50.28 million yuan; Realize profit and tax16.2 million yuan; Among them, the profit is 6.5438+0.03 million yuan.