广西华锡集团股份有限公司车河选矿厂为广西大厂矿田长坡矿床(包括细脉带和91、92号矿)处理矿石,属锡石多金属硫化矿,原则流程为重-浮-重流程[1-3]。经过多年的开采,该厂原矿锡品位由1.6%降至0.5%,因而须提高前段重选作业抛费率。2008—2010年,该公司将前重丢尾流程由扫选圆锥选矿机+扫选螺旋溜槽的联合丢尾改造为JT5-2型锯齿波跳汰机丢尾,使前段重选作业抛费率由20%~25%提高至25%~30%,同时,丢尾品位稳定在0.07%以下。但随 Guangxi Chevron Group Co., Ltd. Chehe concentrator for the Guangxi Dachang Changpo ore field ore deposits (including the veins and No. 91, No. 92 ore) ore, cassiterite polymetallic sulfide ore, the principle of the process is heavy - floating - heavy Process [1-3]. After years of mining, the grade of crude ore from the factory dropped from 1.6% to 0.5%, thus raising the rate of re-election work before the election. From 2008 to 2010, the company rebuilt the combined process of throwing the tail of the heavy-throwing tail cone to the JT5-2 sawtooth wave jig by the combined cone throwing machine + From 20% to 25% increased to 25% to 30%, at the same time, tail loss grade stable at 0.07% or less. But with