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梯形跳汰机高效选矿回收锡矿效果

责任编辑:金工机械 发表时间:2016-06-19 15:34

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  由于跳汰机应用于重选-浮选-重 选流程中的前段重选作业中充分发挥了作用,使该流程的成功改造得以实现。可以说没有跳汰机的应用,该流程是难以实现的。通过近20年来的生产实践也充分证 明了这一点,虽然原矿锡品位由0.73%降到0.55%,0.43%,仍然保证了锡精矿质量,并使锡回收率稳定在68%左右。

  为进一步解决大厂锡石-硫化物较粗粒矿物的有效回收,选矿厂结台大厂矿石性质特点,研制了效率较高的梯形侧动跳汰机, 并推广应用于其他选矿厂。该设备为单列3室结构,以6-S摇床头为传动机构,其结构简单、操作容易、维修方便、运转可靠性高。跳汰室横截面为梯形,矿浆流 向由窄变宽,流速逐渐减慢,利于细粒矿物的回收,其冲程、冲次可组成各种跳汰制度,充分发挥各室作用,对各粒级选别适应性强、效率高,隔筛比和隔膜面积 大,启动力强,生产能力大且连续排矿。与下动型圆锥隔膜跳汰机相比,其作业回收率可提高20%左右,水耗减少,并降低选矿成本。选矿厂日处理量扩大到 500t,粗选跳汰采用2台侧动式跳汰机,且用l台侧动式跳汰机扫选。此时,粗选跳汰给矿粒度为-4mm,跳汰机作用得到充分的发挥,跳汰粗精矿中锡回收 率为75%,跳汰回收的粗粒金属量占前重粗精矿金属量的比例为94.38%。同时,能丢弃占原矿产率30%以上的合格尾矿对处理量不大,又不可能用重介质 旋流器预选的情况下,采用跳汰机丢除台格尾矿是适宜的。跳汰机的应用即代替了预选作,又可以用于粗选作业,因此可节省厂房面积,节约磨矿电耗、药剂费用, 降低成本。