| 有色冶炼铜镉渣中镉的提取工艺研究 |
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| 引用本文： | 成应向,刘喜珍,漆燕,王强强,许友泽,钟振宇.有色冶炼铜镉渣中镉的提取工艺研究[J].环境工程,2012(Z2):331-334,345. |
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| 作者姓名： | 成应向 刘喜珍 漆燕 王强强 许友泽 钟振宇 |
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| 作者单位： | 湖南省环境保护科学研究院;水污染控制技术湖南省重点实验室;湖南大学化学化工学院 |
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| 基金项目： | 湖南省创新专项基金支持项目(010TF1012) |
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| 摘 要： | 以铜镉渣为研究对象,采用酸浸-锌粉置换方法对有色冶炼铜镉渣中镉进行提取,通过单因素实验分别对酸浸及置换条件进行考察,确定了镉提取的最优条件:在硫酸浓度为60g/L、液固比8:1、浸出时间3h,温度60℃的条件下镉的浸出率达97%;采用锌粉置换,锌粉用量为理论用量的1.3倍、置换温度40℃、提取时间1h、浸出液pH为2.5时,镉的置换率在99%以上,海绵镉的品位达78%。
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| 关 键 词： | 铜镉渣 海绵镉 酸浸 锌粉置换 |
PROCESS RESEARCH OF EXTRACTING CADMIUM FROM NON-FERROUS COPPER AND CADMIUM SLAG |
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| Cheng Yingxiang,Liu Xizhen,Qi Yan,Wang Qiangqiang,Xu Youze,Zhong Zhenyu.PROCESS RESEARCH OF EXTRACTING CADMIUM FROM NON-FERROUS COPPER AND CADMIUM SLAG[J].Environmental Engineering,2012(Z2):331-334,345. |
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| Authors: | Cheng Yingxiang Liu Xizhen Qi Yan Wang Qiangqiang Xu Youze Zhong Zhenyu |
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| Institution: | 1,2(1.Hunan Research Academy of Environment Science,Changsha 410004,China; 2.Hunan Key Laboratory of Water Pollution Control Technology,Changsha 410004,China; 3.College of Chemistry and Chemical Engineering,Hunan University,Changsha 410004,China) |
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| Abstract: | Taking the copper and cadmium residue as research object,the recovery of cadmium from non-ferrous copper and cadmium slag was conducted by the acid leaching-zinc powder displacement processes.It was examined the leaching rate and displacing rate impacts and got the optimal conditions of extracting cadmium by single factor experiment: over 97% of cadmium could be leached out under the conditions of 60 g/L of sulfuric acid,8:1 radio of liquid to solid,60 ℃,3 h of leaching time.Under the conditions of 1.3 of adding ratio of zinc powder,60 ℃ of reaction temperature,1 h of reaction time,the pH of leaching solution was 2.5,the displacement rate of cadmium reached 99% and cadmium purity of cadmium sponge was 78%. |
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| Keywords: | copper and cadmium slag cadmium sponge acid leaching zinc powder displacement |
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