粗锡精矿精选工艺研究及工业生产有关问题探讨

Beneficiation Research on Rough Tin Concentrate and Discussion on Industrial Production

根据云锡公司近年来资源转型后矿石性质变化对生产合格锡精矿质量的影响,结合公司选矿厂及冶炼生产实践,介绍了粗锡精矿深加工的意义。根据大屯选厂氧化矿粗锡精矿为主的六个粗锡精矿试料和一个总粗锡精矿混合试料的小型试验研究结果,推荐采用浮选-重选-磁选工艺流程。通过该流程的扩大试验及连续生产试验,验证了小型试验结果的可靠性,同时对扩大试验设备选型及工业生产经验进行了探讨,进一步证实建立规模化精选厂加工粗锡精矿的可行性,为云锡公司其他厂建设类似粗锡精矿精选厂起到示范作用。

According to the influence of the change of ore properties on the production of qualified tin concentrate due to the resource transformation,as well as the practical operation of the tin concentrator,the significance of deep processing of the tin concentrate was introduced.The bench-scale test using six samples from different rough tin concentrates and a mixed sample from the six concentrates showed that the technological flowsheet of flotation-gravity separation-magnetic separation should be recommended.Through the expanding and continuous production tests,the reliability of the bench-scale test was proved.At the same time,the selection of equipments and industrial experience were discussed,which proves the feasibility of constructing large-scale tin concentrator to operate the rough tin concentrate and sets a good example for constructing similar concentrator for other enterprises.