高铁锌焙砂浸出过程影响因素研究

王之宇; 郭家林; 何悦

doi:10.3969/j.issn.1000-6532.2023.02.003

高铁锌焙砂浸出过程影响因素研究

doi: 10.3969/j.issn.1000-6532.2023.02.003

王之宇^{1, 2,},
郭家林^{1, 2},
何悦¹

1.
商洛学院化学工程与现代材料学院，陕西　商洛　726000
2.
陕西省尾矿资源综合利用重点实验室，陕西　商洛　726000

基金项目: 陕西省教育厅科研计划项目（18JS035）

详细信息

作者简介:
王之宇（1987-），男，硕士，副教授，主要从事矿产资源综合利用方面的研究工作

中图分类号: TD951
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- 文章访问数: 67
- HTML全文浏览量: 12
- PDF下载量: 10
- 被引次数: 0
出版历程
- 收稿日期: 2021-01-26

Study on Influencing Factors of Leaching Process of High-iron Zinc Calcine

Wang Zhiyu^{1, 2
,},
Guo Jialin^{1, 2},
He Yue¹

1.
Shangluo University College of Chemical Engineering and Modern Materials, Shangluo, Shaanxi, China
2.
Shaanxi Key Laboratory of Comprehensive Utilization of Tailings Resources, Shangluo, Shaanxi, China

摘要

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。
- 高铁锌焙砂 /
- 湿法炼锌 /
- 浸出工艺
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.
- High iron zinc calcine /
- Zinc hydrometallurgy /
- Leaching technology

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图 1 锌焙砂XRD

Figure 1. XRD of zinc calcine

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图 2 初始酸度与浸出率的关系

Figure 2. Relationship between initial acidity and leaching rate

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图 3 液固比与浸出率的关系

Figure 3. Relationship between liquid-solid ratio and leaching rate

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图 4 温度与浸出率的关系

Figure 4. Relationship between temperature and leaching rate

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图 5 温度对不同初始酸度下Zn浸出率的影响

Figure 5. Effect of temperature on Zn leaching rate under different initial acidity

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图 6 温度对不同初始酸度下Fe浸出率的影响

Figure 6. Effect of temperature on Fe leaching rate under different initial acidity

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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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