论文部分内容阅读
本文介绍一种新型立鼓式动态旋涡电流分选机 ,它可分选粒度约 2～ 8mm细粒导电性的有色金属。这种分选机称为立鼓式旋涡电流分选机 (缩写为VDECS) ,它由装有永磁体的立式转鼓构成 ,永磁铁按N -S和S -N方向交替排列 ,转鼓直接安装在电动机轴上。要分选的粒状物料沿倾斜方向给到磁场中 ,与转鼓外缘碰撞 ,发生偏斜。为了提高分选效率 ,转鼓转速不用太高 ,但必须选择合理选别参数。文中列出了几种由不同的细粒导电物料和绝缘物料组成的混合废料分选时获得的品位和回收率结果。并且将这些结果与用卧鼓式旋涡电流分选机 (缩写为HDECS)处理同类废料取得的品位和回收率指标进行比较 ,HDECS是设计用来处理毫米级物料的。VDECS的优点是 ,分选效率接近于HDECS的分选效率 ,但设备投资费用较低。缺点是分选中产出的中间产品必须再次返回分选工艺。
This article introduces a new type of drum-type dynamic eddy current sorting machine, which can sort particle size of about 2 ~ 8mm fine-grained conductive non-ferrous metals. This sorter is known as a drum-type vortex current separator (abbreviated as VDECS), which is composed of a vertical drum equipped with a permanent magnet. The permanent magnets are alternately arranged in the N-S and S-N directions. The drum Directly mounted on the motor shaft. The granular material to be sorted is fed to the magnetic field in a slanted direction and collides with the outer rim of the drum and deflects. In order to improve the sorting efficiency, drum speed is not too high, but must choose a reasonable sorting parameters. The article lists several grade and recovery results obtained when sorting mixed waste consisting of different finely divided conductive materials and insulating materials. These results are compared with the grade and recovery indicators obtained for the same waste treated with a horizontal drum vortex current sorter (HDECS), which is designed to handle millimeter-sized materials. The advantage of VDECS is that the sorting efficiency is close to the sorting efficiency of HDECS, but the equipment investment cost is lower. The disadvantage is that the intermediate product produced during sorting must be returned to the sorting process again.