用直线振动筛和一次磨机组成闭路,以取代传统的螺旋分级机进行湿式细粒级分级,是我国选矿设备发展上的一个重要突破。三年来的工业生产试验证明,用直线振动筛取代螺旋分级机进行分级,可取得下述效果:1.分级效率可提高15%以上,有效地防止了矿石的过磨;2.分级效率的提高也导致了磨矿效率提 It is an important breakthrough in the development of mineral processing equipment in our country to use the linear vibrating screen and the primary mill to form a closed circuit to replace the traditional spiral classifier for wet classification. Three years of industrial production test proved that the use of linear vibrating screen to replace the spiral grading machine grading, the following effects can be achieved: 1. Grading efficiency can be increased more than 15%, effectively prevent the over-grinding ore; 2. Grading efficiency Also led to grinding efficiency mention