Study on the New Process of Zinc Purification from Ammonium Molybdate Solution AITranslate
Abstract AITranslate
To solve the problem of high-zinc concentration in the ammonium molybdate solution obtained by roasting and ammonium leaching of a complex low grade molybdenum concentrate,a new two-stage purification process with ammonium carbonate-ammonia and ammonium sulfide was applied for the treatment of ammonium molybdate solution pretreated with ammonium sulfide.The effects were emphatically investigated of reagent dosage,pH value,reaction temperature and reaction time on zinc removal rate.The optimal conditions of purification process are obtained as follows：in the primary purification,ammonium carbonate dosage is 1.2 times of the theoretical amount with reaction temperature of 45℃,reaction time of 0.5 hand pH value of 9,and zinc removal rate over 95%.In the secondary purification,ammonia and ammonium sulfide addition is 1.1 times of the theoretical amount with reaction temperature of 45 ℃ and reaction time of0.5h,pH value of 8.5,zinc removal rate above 96%.The comprehensive removal rate of zinc is beyond 99.5%,and molybdenum loss rate is less than 1%.The purified solution can be directly treated through acid precipitation and crystallization to obtain ammonium molybdate product of the first grade.
KeyWords AITranslate
1谢铿,王海北,张邦胜.低品位钼矿及钼二次资源加压浸出工艺的研究进展[J].稀有金属与硬质合金,2014,42(3):23-27. 被引量：3
2鲁兴武,蒲敬文,程亮,张恩玉,何国才,易超.低品位含铜钼精矿综合回收新工艺研究[J].有色金属：冶炼部分,2014(8):42-44. 被引量：6
3祁栋,王毅.钼精矿浸出液中铼与钼的分离试验研究[J].稀有金属与硬质合金,2013,41(1):20-23. 被引量：3
4鲁兴武,易超,何国才,蒲敬文,李冠军,张析,余江鸿.钼酸铵硫化沉淀过程中钼损失试验研究[J].湿法冶金,2013,32(4):259-261. 被引量：5
5HOU X C,XIAO L S,GAO C J,et al. Kinetics of leac- hing selenium from Ni-Mo ore smelter dust using sodi- um chlorate in a mixture of hydrochloric and sulfuric acids[J]. Hydrometallurgy,2010,104(1) : 76-80.
6GB3460-2007.钼酸铵[S].
1П.,МЛ,刘国鼎.某些杂质对锌电积影响及硫酸锌溶液净化新工艺[J].株冶科技,1992,20(1):66-68. 被引量：1
2陈琴麟.高炉煤气净化新工艺,新设备在唐钢工程中的应用[J].钢铁厂设计,1990(6):71-73.
3甘敏,曾金林,范晓慧,张麟,陈许玲,王勇,邓琼,王海波.HNO_3/NH_4NO_3预处理工艺强化低钼焙砂浸出[J].中国有色金属学报,2016,26(2):471-477. 被引量：3
4鲁兴武,易超,何国才,蒲敬文,李冠军,张析,余江鸿.钼酸铵硫化沉淀过程中钼损失试验研究[J].湿法冶金,2013,32(4):259-261. 被引量：5
5刘建本,陈上.低品位钼镍焙烧矿常压同时浸出钼镍的工艺研究[J].化学世界,2013,54(5):264-266.
6张文钲.从低品位钼精矿或钼中间产品生产工业氧化钼、二钼酸铵和纯三氧化钼[J].中国钼业,2004,28(4):33-36. 被引量：18
7俞娟,杨洪英,陈燕杰,范有静.低品位钼精矿的钼提取研究[J].东北大学学报：自然科学版,2011,32(8):1141-1144. 被引量：10
8韩伟,秦庆伟.低品位钼精矿制取工业钼酸铵试验研究[J].铜业工程,2013(5):1-4.
9都兴红,刘慧,景涵,娄太平.黄铁矿在氧化镍矿焙烧氨浸过程中的作用[J].东北大学学报：自然科学版,2012,33(12):1750-1753. 被引量：3
10于延芬,刘缘缘,秦庆伟,陈湘清.从贫化电炉渣浮选尾砂中氨浸铜的动力学研究[J].湿法冶金,2012,31(4):230-233. 被引量：1
Basic Information:
DOI：
Chinese Library Classification Number:TF841.2[冶金工程—有色金属冶金]
Citation Information:
To solve the problem of high-zinc concentration in the ammonium molybdate solution obtained by roasting and ammonium leaching of a complex low grade molybdenum concentrate,a new two-stage purification process with ammonium carbonate-ammonia and ammonium sulfide was applied for the treatment of ammonium molybdate solution pretreated with ammonium sulfide.The effects were emphatically investigated of reagent dosage,pH value,reaction temperature and reaction time on zinc removal rate.The optimal conditions of purification process are obtained as follows：in the primary purification,ammonium carbonate dosage is 1.2 times of the theoretical amount with reaction temperature of 45℃,reaction time of 0.5 hand pH value of 9,and zinc removal rate over 95%.In the secondary purification,ammonia and ammonium sulfide addition is 1.1 times of the theoretical amount with reaction temperature of 45 ℃ and reaction time of0.5h,pH value of 8.5,zinc removal rate above 96%.The comprehensive removal rate of zinc is beyond 99.5%,and molybdenum loss rate is less than 1%.The purified solution can be directly treated through acid precipitation and crystallization to obtain ammonium molybdate product of the first grade.
quote
| GB/T 7714-2015 | [1] JI Hong-an, LU Xing-wu. Study on the New Process of Zinc Purification from Ammonium Molybdate Solution[J]. Rare Metals and Cemented Carbides, 2016(3): 5-8. |
| MLA | [1] JI Hong-an, and LU Xing-wu. "Study on the New Process of Zinc Purification from Ammonium Molybdate Solution." Rare Metals and Cemented Carbides, no. 3, 2016, pp. 5-8. |
| APA | [1] JI Hong-an, & LU Xing-wu. (2016). Study on the New Process of Zinc Purification from Ammonium Molybdate Solution. Rare Metals and Cemented Carbides(3), 5-8. |
| IEEE | [1] JI Hong-an and LU Xing-wu, "Study on the New Process of Zinc Purification from Ammonium Molybdate Solution," Rare Metals and Cemented Carbides, no. 3, pp. 5-8, 2016. keywords: {complex low grade molybdenum concentrate;ammonium molybdate solution;zinc purification;new process;（NH4）2CO3;NH3·H2O;（NH4）2S} |