大厂铜坑锌铜矿高效回收的浮选工艺研究

发布时间：2019-05-25 01:47

【摘要】：铜、锌都是重要的金属材料,随着人类的开采使得矿产资源日趋枯竭,矿石亦日趋贫、细、杂,选矿难度不断加大,选矿成本越来越高。虽然多年来国内外选矿工作者进行了大量的研究工作,也取得了一些研究成果。但对于一些嵌布关系、成分组成复杂难选的铜锌硫化矿石,已有的成熟选矿工艺还难以获得较为理想的分选指标。因此,无论是从提高企业经济效益还是从综合利用矿产资源方面来讲,研究铜锌硫化矿的分选对我国的铜锌工业发展都有非常重要的意义。论文研究的铜锌硫化矿石来自广西大厂铜坑矿区,该矿石具有铜品位低,砷含量较高,铜矿物嵌布细度细且与锌矿物相互密切共生的特点,属复杂难选高砷铜锌多金属硫化矿。因此,寻找合理的浮选工艺流程以及浮选药剂制度对于成功实现铜锌浮选分离非常关键。在工艺矿物学研究基础上,针对矿石性质特点,制定相应的技术方法和措施,先后进行了铜锌依次优先方案、铜优先—锌硫混浮再分离方案以及铜锌等可浮方案探索,取得指标如下：(1)优先方案：铜精矿含铜21.30%,铜回收率73.35%；锌精矿含锌50.10%,锌回收率91.61%。(2)优先—混浮方案：铜精矿含铜20.65%,铜回收率73.50%；锌精矿含锌50.03%,锌回收率90.91%。(3)等可浮方案：铜精矿含铜18.48%,铜回收率76.56%；锌精矿含锌48.79%,锌回收率93.54%。此外,本论文对浮选尾矿中锡矿物进行了重选回收探索。
[Abstract]:Copper and zinc are important metal materials. With the exploitation of human beings, the mineral resources are becoming more and more exhausted, the ore is becoming more and more poor, fine, miscellaneous, the difficulty of mineral processing is increasing, and the cost of mineral processing is getting higher and higher. Although many years of domestic and foreign mineral processing workers have done a lot of research work, but also made some research results. However, for some copper-zinc sulfide ores with complex composition and difficult to be separated, it is difficult to obtain the ideal separation index by the existing mature mineral processing technology. Therefore, whether from the aspects of improving the economic benefit of enterprises or comprehensive utilization of mineral resources, it is of great significance to study the separation of copper-zinc sulfide ore for the development of copper and zinc industry in China. The copper-zinc sulfide ore studied in this paper comes from Tongkeng mining area in Dachang, Guangxi. The ore has the characteristics of low copper grade, high arsenic content, fine copper mineral distribution and close symbiosis with zinc mineral. Therefore, it is very important to find a reasonable flotation process and flotation reagent system for the successful separation of copper and zinc. On the basis of process Mineralogy research, according to the characteristics of ore properties, the corresponding technical methods and measures are worked out, and the priority scheme of copper and zinc, the scheme of copper priority-zinc-sulfur mixed floatation and the floatation scheme of copper and zinc are explored one after another. The results are as follows: (1) priority scheme: copper concentrate contains 21.30% copper and copper recovery rate is 73.35%; Zinc concentrate contains 50. 10% zinc and zinc recovery is 91. 61%. (2) priority-mixed floatation scheme: copper concentrate contains 20. 65% copper, copper recovery 73. 50%; The zinc content of zinc concentrate is 50.03%, and the recovery rate of zinc is 0991%. (3) the floating scheme of copper concentrate is as follows: copper concentrate contains 18.48% copper, copper recovery 76.56%, zinc concentrate 48.79%, zinc recovery 93.54%. In addition, the gravity separation and recovery of tin minerals in flotation tailings were explored in this paper.
【学位授予单位】：广西大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TD952

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