富铼渣双氧水浸出液铼钼分离工艺研究
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摘要
以某公司富铼渣双氧水浸出液为原料,对N235萃取分离铼钼过程中有机相组成、相比、酸度、温度、时间、萃取级数对铼钼分离过程的影响进行了研究,探索了N235萃取分离铼钼的最佳工艺。实验结果表明,N235浓度为10%、ROH浓度为40%、O/A为1∶10、酸度为1.5 mol/L、温度为室温、时间为5 min、萃取级数为3级时,铼钼分离效果最好。在此条件下,铼萃取率为99.35%、钼萃取率为5.52%,分离系数为2 616.11,有着良好的铼钼分离效果及高的铼提取率。
With the leaching solution of a rhenium bearing slag by hydrogen peroxide as raw material, the impact of various factors in process of extracting rhenium and molybdenum by using N235 had been indepth investigated. The factors such as organic phase composition, O/A, acidity, temperature, time and extraction stage were studied to research the best techniques of extracting and separating rhenium and molybdenum.The optimum extracting conditions were obtained from experiments as follows:the concentration of N235 was10%, the concentration of ROH was 40%, O/A was 1∶10, the acidity was 1.5 mol/L, temperature was room temperature, time was 5 minutes, extraction stage was three. Under the above conditions, the extraction rate of rhenium can reach 99.35%, molybdenum can reach 5.52 and the separation coefficient is 2 616.11, having a good effect of separating rhenium and molybdenum.
With the leaching solution of a rhenium bearing slag by hydrogen peroxide as raw material, the impact of various factors in process of extracting rhenium and molybdenum by using N235 had been indepth investigated. The factors such as organic phase composition, O/A, acidity, temperature, time and extraction stage were studied to research the best techniques of extracting and separating rhenium and molybdenum.The optimum extracting conditions were obtained from experiments as follows:the concentration of N235 was10%, the concentration of ROH was 40%, O/A was 1∶10, the acidity was 1.5 mol/L, temperature was room temperature, time was 5 minutes, extraction stage was three. Under the above conditions, the extraction rate of rhenium can reach 99.35%, molybdenum can reach 5.52 and the separation coefficient is 2 616.11, having a good effect of separating rhenium and molybdenum.
引文
1 Abisheva Z S,Zagorodnyaya A N,Bektueganov N S.Review of Technologiesfor Rhenium Recovery From Mineral Raw Materials in Kazakhstan[J].Hydrometallurgy,2011,109(1/2):1-8.
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2 翟秀静,周亚光.稀散金属[M].合肥:中国科学技术大学出版社,2008.
3 廖宇龙.高钼白钨中矿酸性化学选矿浸出液的钨钼萃取研究[D].长沙:中南大学,2011.
4 王刚.从废催化剂中回收钨工艺研究[D].长沙:中南大学,2014.
5 张启修,赵秦生.钨钼冶金[M].北京:冶金工业出版社,2005.
6 胡昌义,陈力.铼/铱发动机管研究最新进展[J].贵金属,2007,28(4):57-62.