Based on the processing flow of Dashihe separation mill, using spiral sluice, the possibility of obtaining final concentrate under coarse primarygrinding is searched for.
探索大石河选厂在生产流程的基础上，应用螺旋溜槽，获取粗磨后最终精矿的可能性。
2
The primary use was elevating water for agriculture, but they were also commonly used to turn millstones for grinding rice and wheat.
最开始主要是应用于农业灌溉，后来渐渐的应用于带动磨石碾米和小麦。
3
The screening technology is a primary way to insure high yield and super fineness of fine grinding mill. But it is mainly used in the obstructing equipment in the chamber of fine grinding mill.