Experimental Study on Oxygen-pressure Ammonia-leaching Process of Industrial Molybdenum Oxide AITranslate
Abstract AITranslate
In order to solve the problem of low leaching rate and impurities of phosphorus and silicon in the leaching solution of industrial molybdenum oxide in atmospheric pressure ammonia-leaching process,the optimized conditions of ammonia-leaching of industrial molybdenum oxide at oxygen pressure were studied,and the feasibility of reducing phosphorus and silicon content in leaching solution by adding MgO and CaCO3was explored.The results show that the optimized conditions of oxygen-pressure ammonia-leaching of industrial molybdenum oxide are as follows:ammonia concentration 6.5%,liquid-solid ratio 3∶1,oxygen pressure 1.5MPa,leaching temperature 130℃,leaching time 3h,and stirring speed 350r/min.Under the optimized conditions,the molybdenum leaching effect is the best,and the leaching rate reaches 98.04%.In addition,MgO has better inhibition effect on phosphorus and silicon than CaCO3,and the lea-ching rates of phosphorus and silicon are 3.04%and 5.06%,respectively,having no effect on molybdenum leaching.The oxygen-pressure ammonia-leaching process of industrial molybdenum oxide has the advan-tages of simple operation,high molybdenum leaching rate,and obvious inhibition effect on phosphorus and silicon.The obtained ammonium molybdate solution is relatively pure,which is favorable for subsequent molybdenum production.
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DOI：
Chinese Library Classification Number:TF843.1[冶金工程—有色金属冶金]
Citation Information:
In order to solve the problem of low leaching rate and impurities of phosphorus and silicon in the leaching solution of industrial molybdenum oxide in atmospheric pressure ammonia-leaching process,the optimized conditions of ammonia-leaching of industrial molybdenum oxide at oxygen pressure were studied,and the feasibility of reducing phosphorus and silicon content in leaching solution by adding MgO and CaCO3was explored.The results show that the optimized conditions of oxygen-pressure ammonia-leaching of industrial molybdenum oxide are as follows:ammonia concentration 6.5%,liquid-solid ratio 3∶1,oxygen pressure 1.5MPa,leaching temperature 130℃,leaching time 3h,and stirring speed 350r/min.Under the optimized conditions,the molybdenum leaching effect is the best,and the leaching rate reaches 98.04%.In addition,MgO has better inhibition effect on phosphorus and silicon than CaCO3,and the lea-ching rates of phosphorus and silicon are 3.04%and 5.06%,respectively,having no effect on molybdenum leaching.The oxygen-pressure ammonia-leaching process of industrial molybdenum oxide has the advan-tages of simple operation,high molybdenum leaching rate,and obvious inhibition effect on phosphorus and silicon.The obtained ammonium molybdate solution is relatively pure,which is favorable for subsequent molybdenum production.
quote
| GB/T 7714-2015 | [1] LUO Jin-ai, XIAO Chao, CHEN Ning, et al. Experimental Study on Oxygen-pressure Ammonia-leaching Process of Industrial Molybdenum Oxide[J]. Rare Metals and Cemented Carbides, 2020(6): 9-13. |
| MLA | [1] LUO Jin-ai, et al., "Experimental Study on Oxygen-pressure Ammonia-leaching Process of Industrial Molybdenum Oxide." Rare Metals and Cemented Carbides, no. 6, 2020, pp. 9-13. |
| APA | [1] LUO Jin-ai, XIAO Chao, CHEN Ning, XU Ming-chen, ZHONG Guan-he, & XU Jing-chen. (2020). Experimental Study on Oxygen-pressure Ammonia-leaching Process of Industrial Molybdenum Oxide. Rare Metals and Cemented Carbides(6), 9-13. |
| IEEE | [1] LUO Jin-ai, XIAO Chao, CHEN Ning, XU Ming-chen, ZHONG Guan-he, and XU Jing-chen, "Experimental Study on Oxygen-pressure Ammonia-leaching Process of Industrial Molybdenum Oxide," Rare Metals and Cemented Carbides, no. 6, pp. 9-13, 2020. keywords: {industrial molybdenum oxide;oxygen pressure;ammonia-leaching;molybdenum leaching rate;impurity removal} |