Study on Influencing Factors of Leaching Process of High-iron Zinc Calcine
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摘要:
高铁锌焙砂在浸出Zn的同时Fe也被大量浸出，对后续生产造成影响。针对这一问题，以陕西某公司高铁锌焙砂为研究对象，通过对初始酸度、浸出温度、固液比等进行研究，分析Zn和Fe浸出率的影响因素，对浸出工艺进行优化，以达到提高Zn的浸出率，降低Fe的浸出率的目的。结果表明，在硫酸浓度不同的浸出体系中，温度对焙砂中Zn和Fe浸出率的影响程度不同。当硫酸用量不足时，温度对Zn和Fe的浸出无明显影响，当硫酸过量时，温度会影响Zn和Fe的浸出，对Fe的影响尤为明显。初始酸度90 g/L、浸出温度60 ℃、固液比10∶1、搅拌速度600 r/min为较为理想的浸出条件。
Abstract:Zinc calcine with high Fe content is leached with a large amount of Fe at the same time, which affects the subsequent operation. In order to solve this problem, the high iron zinc calcine of a company in Shaanxi was taken as the research object. The influence factors of Zn and Fe leaching rate were analyzed by studying the initial acidity, leaching temperature and solid-liquid ratio. The leaching process was optimized to improve the leaching rate of Zn and reduce the leaching rate of Fe. The results show that the effect of temperature on leaching rate of Zn and Fe is different in different sulfuric acid concentration leaching system. When the sulfuric acid dosage is insufficient, the temperature has no obvious effect on the leaching of Zn and Fe. When the sulfuric acid is excessive, the temperature will affect the leaching of Zn and Fe, especially for Fe. Initial acidity 90 g/L, leaching temperature 60 ℃, solid-liquid ratio 10:1, stirring speed 600 r/min are ideal leaching conditions.
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Key words:
- High iron zinc calcine /
- Zinc hydrometallurgy /
- Leaching technology
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表 1 锌焙砂主要化学成分/%
Table 1. Main chemical components of zinc calcine
Zn Fe2O3 SiO2 CaO Cu Al2O3 SO3 Mn Sb MgO Sn Pb 61 31 3.3 1.1 0.9 0.7 0.6 0.5 0.1 0.1 0.1 0.07 
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表 2 锌焙砂粒度分析
Table 2. Granularity analysis of zinc calcine
粒度/μm <10 10~52.481 52.481~104.713 104.713~158.489 >158.489 体积/% 3.98 34.03 47.59 13.44 0.96
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[1] 申亚芳, 张馨圆, 王乐, 等. 氧化锌矿处理方法现状[J]. 矿产综合利用, 2020(2):23-28. SHEN Y F, ZHANG X Y, WANG L, et al. Preparation of zinc and its compounds from zinc oxide ore[J]. Multipurpose Utilization of Mineral Resources, 2020(2):23-28. doi: 10.3969/j.issn.1000-6532.2020.02.004
[2] 陈先友, 邓志敢, 魏昶, 等. 锌焙砂中性浸出渣还原酸浸试验研究[J]. 矿冶, 2015, 24(2):55-59. CHEN X Y, DENG Z G, WEI C, et al. Experimental study on reduction acid leaching of neutral leaching residue of zinc calcine[J]. Mining and Metallurgy, 2015, 24(2):55-59. doi: 10.3969/j.issn.1005-7854.2015.02.014
[3] 赵清平, 蓝卓越, 童雄. 铜离子对闪锌矿、黄铁矿浮选的选择性活化机理研究[J]. 矿产综合利用, 2021(3):27-38. ZHAO Q P, LAN Z Y, TONG X. Activation mechanism of selective flotation of spahalerite and pyrite by copper[J]. Multipurpose Utilization of Mineral Resources, 2021(3):27-38.
[4] 张晋霞, 冯洪均, 王龙, 等. 含锌冶金尘泥氨浸溶蚀实验研究[J]. 矿产综合利用, 2021(1):124-129. ZHANG J X, FENG H J, WANG L, et al. Study on treating zinc-bearing dust by ammonia leaching process[J]. Multipurpose Utilization of Mineral Resources, 2021(1):124-129. doi: 10.3969/j.issn.1000-6532.2021.01.021
[5] 丁文涛. 高硅锌焙砂湿法浸出试验[J]. 矿产综合利用, 2019(5):48-51. DING W T. Wet leaching test of high silicon zinc calcine[J]. Multipurpose Utilization of Mineral Resources, 2019(5):48-51. doi: 10.3969/j.issn.1000-6532.2019.05.010
[6] 杨金林, 肖汉新, 罗美秀, 等. 锌焙砂浸出规律研究[J]. 矿产综合利用, 2017(3):71-75+66. YANG J L, XIAO H X, LUO M X, et al. Study on leaching law of zinc calcine[J]. Multipurpose Utilization of Mineral Resources, 2017(3):71-75+66. doi: 10.3969/j.issn.1000-6532.2017.03.013
[7] 缑明亮, 夏丹. 陕西某锌冶炼厂锌冶炼渣综合利用[J]. 矿产综合利用, 2020(4):147-151. GOU M L, XIA D. Study on comprehensive utilization of zinc smelting slag in a zinc smelter in Shaanxi province[J]. Multipurpose Utilization of Mineral Resources, 2020(4):147-151. doi: 10.3969/j.issn.1000-6532.2020.04.025
[8] 王志军, 苏立峰, 刘三平. 新疆某高硅锌焙砂酸浸工艺优化[J]. 中国资源综合利用, 2018, 36(2):19-21. WANG Z J, SU L F, LIU S P. Optimization of acid leaching process for a high silicon zinc calcine in Xinjiang[J]. China Resources Comprehensive Utilization, 2018, 36(2):19-21. doi: 10.3969/j.issn.1008-9500.2018.02.011
[9] 彭兵, 林冬红, 刘恢, 等. 高铁锌焙砂还原焙烧-碱浸工艺[J]. 中国有色金属学报, 2017, 27(2):423-429. PENG B, LIN D H, LIU H, et al. High iron zinc calcine reduction roasting-alkali leaching process[J]. Chinese Journal of Nonferrous Metals, 2017, 27(2):423-429. doi: 10.19476/j.ysxb.1004.0609.2017.02.025
[10] 谭敏, 刘一宁, 廖贻鹏, 等. 高铁锌焙砂浸出方式对锌浸出率的影响[J]. 湿法冶金, 2016, 35(6):473-476. TAN M, LIU Y N, LIAO Y P, et al. The effect of leaching method of high iron zinc calcine on zinc leaching rate[J]. Hydrometallurgy of China, 2016, 35(6):473-476. doi: 10.13355/j.cnki.sfyj.2016.06.005
[11] 樊光, 邓志敢, 魏昶, 等. 锌浸渣还原浸出工艺研究[J]. 有色金属工程, 2019, 9(8):41-47. FAN G, DENG Z G, WEI C, et al. Zinc leaching residue reduction leaching process research[J]. Nonferrous Metal Engineering, 2019, 9(8):41-47. doi: 10.3969/j.issn.2095-1744.2019.08.007
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