| 保温缓冷对铜渣结晶性能及铜浮选的影响 |
| |
| 引用本文： | 翟启林,刘润清,王琛,孙伟,杨越. 保温缓冷对铜渣结晶性能及铜浮选的影响[J]. 矿产保护与利用, 2019, 39(3): 75-80. DOI: 10.13779/j.cnki.issn1001-0076.2019.03.013 |
| |
| 作者姓名： | 翟启林 刘润清 王琛 孙伟 杨越 |
| |
| 作者单位： | 中南大学 资源加工与生物工程学院，湖南 长沙 410083 |
| |
| 摘 要： | 针对我国某冶炼厂的缓冷铜渣，以保温时间和降温速率为变量，研究了保温缓冷制度对铜渣浮选回收铜指标的影响；采用扫描电镜分析了保温时间和降温速率对高温铜渣结晶性能的影响。研究发现:在保温时间为2 h、降温速率为2℃/min的最佳冷却条件下可获得铜品位为8.206%、铜综合回收率为66.95%的铜精矿；适合的保温时间能够让含铜矿物颗粒在熔融状态下充分聚集形成易浮铜相；降温速率越缓慢，渣中含铜相结晶粒度越大，并且铜的赋存相与其他脉石矿物相的嵌布关系更简单。因此，合理的缓慢冷却制度有利于优化缓冷铜渣浮选回收铜的指标。
|
| 关 键 词： | 铜渣 浮选 保温时间 降温速率 结晶性能 |
| 收稿时间： | 2019-03-19 |
Effect of Insulation Slow Cooling on Crystallization Performance of Copper Slag and Copper Flotation |
| |
| Affiliation: | School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, Hunan, China |
| |
| Abstract: | Aiming at the slow cooling copper slag of a smelting plant in China, the effects of insulation and slow cooling system on copper recovery index of copper slag flotation were studied by taking holding time and cooling rate as variables. The effects of holding time and cooling rate on the crystallization performance of high temperature copper slag were analyzed by scanning electron microscopy. It was found that copper concentrate with copper grade of 8.206% and copper recovery of 66.95% can be obtained under the optimum cooling conditions of holding time of 2 h and cooling rate of 2℃/min. The appropriate holding time could make the copper-bearing mineral particles fully aggregate in the melting state to form floating copper phase. It was also found that the slower the cooling rate was, the crystalline grain size of copper-bearing phase in slag was larger and the distribution relationship between copper and other gangue mineral phases was simpler. Therefore, a reasonable slow cooling system is conducive to optimizing the index of copper recovery from slow cooling copper slag by flotation. |
| |
| Keywords: | |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《矿产保护与利用》浏览原始摘要信息 |
|
点击此处可从《矿产保护与利用》下载免费的PDF全文 |
