| 类针铁矿沉淀结晶的研究 |
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| 引用本文： | 刘润清,常晓然,韩海生,岳彤,孙伟.类针铁矿沉淀结晶的研究[J].矿冶工程,2015,35(6):57-60. |
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| 作者姓名： | 刘润清 常晓然 韩海生 岳彤 孙伟 |
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| 作者单位： | 中南大学 资源加工与生物工程学院, 湖南 长沙 410083 |
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| 基金项目： | 高等学校学科创新引智计划(B14034) |
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| 摘 要： | 针对湿法冶金浸出液除铁方法存在的缺点进行了研究, 通过调节pH值、温度、加入双氧水的速度, 研究了类针铁矿沉淀结晶的最佳条件, 并在此基础上, 研究了褐铁矿晶种对类针铁矿沉淀结晶的影响。结果表明, 在80~85 ℃, pH=2.4~2.8时, 以8 mL/h的速度缓慢加入30%的双氧水, 除铁效果较好; 褐铁矿晶种的加入有利于类针铁矿在其表面二次成核, 形成大颗粒包裹体。
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| 关 键 词： | 沉淀结晶 类针铁矿 褐铁矿晶种 氧化速度 |
| 收稿时间： | 2015-06-07 |
Parameters Optimization for Precipitating Crystallization of Class Goethite |
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| LIU Run-qing,CHANG Xiao-ran,HAN Hai-sheng,YUE Tong,SUN Wei.Parameters Optimization for Precipitating Crystallization of Class Goethite[J].Mining and Metallurgical Engineering,2015,35(6):57-60. |
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| Authors: | LIU Run-qing CHANG Xiao-ran HAN Hai-sheng YUE Tong SUN Wei |
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| Affiliation: | School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, Hunan, China |
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| Abstract: | Problems existed in current methods of hydrometallurgical leaching solution for deferrization was discussed. By adjusting pulp pH and temperature, and regulating the adding speed of H2O2, optimum conditions for precipitating crystallization of glass goethite were developed and the influence of limonite seed on the crystallization was studied. Good deferrization effect can be obtained with a pulp temperature at 80~85 ℃, pH value at 2.4~2.8, and by adding H2O2(30%) at the speed of 8 mL/h. Furthermore, the added limonite seed is conducive to the secondary nucleation of glass goethite thereon to form large inclusions. |
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| Keywords: | precipitating crystallization glass goethite limonite seed oxidation rate |
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