熔炼铜渣处理工艺研究

发布时间：2018-06-28 14:33

本文选题：熔炼铜渣 + 常压浸出　；参考：《兰州大学》2015年硕士论文

【摘要】：本论文针对金川公司二次铜精矿经自热炉系统火法熔炼产生的熔炼铜渣进行湿法处理工艺研究,在湿法处理过程中分别对卡尔多炉、自热炉熔炼渣进行了常压、加压浸出研究,并考察了液固比、浸出时间、温度、耗酸量等因素对镍、铜浸出率的影响,同时根据常压、加压浸出小型试验结果从工艺技术可行性、工程化设计、设备配置、各工序加工成本及综合经济效益等方面与现行火法处理工艺进行了对比论证。论证结果表明：常压、加压酸浸条件下都能够将卡尔多炉、自热炉渣中的铜浸出,浸出率大于98%,工艺上可满足分离铜的需求,但两种方法镍的浸出率都偏低,常压Ni浸出率为37.79%,加压Ni浸出率为53.24%,加压浸出与常压浸出比镍浸出率提升不大,没有工业应用价值。由于两种浸出方法都存在浸出渣含镍高的情况,浸出渣仍然需要返回火法处理。从铜的分离效果上分析,湿法浸出处理这两种渣在技术上是可行的。
[Abstract]:In this paper, the wet treatment process of copper slag produced by secondary copper concentrate smelting in Jinchuan Company was studied. In the process of wet treatment, the smelting slag of Calduo furnace and self-heating furnace was leached under normal pressure and pressure, respectively. The effects of liquid-solid ratio, leaching time, temperature and acid consumption on the leaching rate of nickel and copper were investigated. The processing cost and comprehensive economic benefit of each working procedure are compared with the current pyrotechnic treatment process. The results show that copper can be leached in Caldor furnace and self-heating slag under atmospheric pressure and pressure acid leaching. The leaching rate is greater than 98, and the process can meet the needs of separating copper. However, the leaching rate of nickel in both methods is on the low side. The leaching rate of Ni at atmospheric pressure is 37.79 and the leaching rate of Ni under pressure is 53.24. The ratio of leaching under pressure to leaching under normal pressure is not much higher than that of leaching under normal pressure, so it has no value in industrial application. The leaching slag still needs to be treated by pyrolysis because of the high nickel content in both leaching methods. From the analysis of separation effect of copper, wet leaching treatment of these two kinds of slag is technically feasible.
【学位授予单位】：兰州大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TF811;X758

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