论文部分内容阅读
主要由铁闪锌矿、砷黄铁矿组成的硫化锌精矿经过磁选后可以除去矿石中所含的砷．分段磁选的磁场强度分别为2000Oe、5000Oe、10000Oe，磁选须在干燥的气氛中进行，所用设备为等磁力磁选机．砷化合物如砷黄铁矿富集于非磁性产品中，磁性产品中砷的品位随磁场强度的增加从0．12％降到0．04％．磁场强度达到10000Oe时，非磁性产品的产率为8．26％，其砷的品位为0．96％．这说明可以除去矿石中约63％的砷．而且，当磁场强度达到10000Oe时，锌精矿的品位增大到48．46％产率增至66．90％．在磁性产品中锌的回收率达96％．
The zinc sulphide concentrate, which is mainly composed of sphalerite and arsenopyrite, can remove the arsenic contained in the ore after magnetic separation. Magnetic field strength of segmented magnetic separation were 2000Oe, 5000Oe, 10000Oe, magnetic separation to be carried out in a dry atmosphere, the equipment used for such magnetic separator. Arsenic compounds such as arsenopyrite are enriched in non-magnetic products. The arsenic level in magnetic products decreases from 0.12% to 0.04% with increasing magnetic field strength. When the magnetic field reaches 10000 Oe, the yield of the non-magnetic product is 8.26% and the arsenic is 0.96%. This shows that about 63% of the arsenic in the ore can be removed. Moreover, when the magnetic field strength reached 10000Oe, the grade of zinc concentrate increased to 48.46% and the yield increased to 66.90%. In magnetic products zinc recovery rate of 96%.