一种铜锡矿石的综合回收试验研究

Research on the Comprehensive Recovery of a Copper-Tin Ore

产自中国西部的一种铜锡矿石,属较难选的复杂铜锡矿,根据矿石的工艺矿物学特点,首先采用浮选回收其中的硫化物矿物,得到铜品位达15.81%,铜回收率为73.14%的铜精矿和硫品位为34.59%,硫回收率为70.99%的硫精矿,使矿石中的铜和硫得到了有效回收。然后采用重选—浮选联合流程回收浮铜尾矿中的锡,得到锡品位为35.02%,锡回收率为20.95%的锡精矿和3种锡中矿。这表明,采用浮选—重选—浮选联合流程可以综合回收这种铜锡矿石中的铜、锡和硫。

A copper-tin ore from Western China belongs to complex refractory ores. In light of its process mineralogy characteristics, flotation is used to recover the sulfide minerals from it, which can obtain a copper concentrate grading more than 15.81% at a recovery of 73.14% and a sulfur concentrate grading 34.59% at a recovery of 70.99% ,effectively recovering its copper and sulfur. Then, gravity separation-flotation process is adopted to recover the tin from the tailings of copper flotation, which can get a tin concentrate grading 35.02% at a 20.95% recovery and three kinds of tin middlings. It is shown that the process of flotation-gravity separation-flotation can be used to recover the copper, tin and sulfur from this copper-tin ore.