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矿冶:2019,28(4):-
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真空控氧氧化法实现底铅深度除锑
(1.昆明冶金研究院;2.中南大学 化学化工学院)
Removal of antimony from low-purity lead bullion by dynamic process based on the oxygen-controlling method under vacuum condition
BAO ZHI QUN1, FU BANG BANG2, QIU KE QIANG3
(1.Kunming Metallurgical Institute;2.School of Chemistry and Chemical Engineering, Central South University,;3.School of Chemistry and Chemical Engineering, Central South University)
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投稿时间:2019-03-22    修订日期:2019-04-18
中文摘要: 含锑约15%的底铅是处理脆硫铅锑矿过程中的一种副产品。目前,电解精炼是处理底铅生产金属铅的主要方法。由于底铅含锑高,导致该方法存在许多严重的缺点,例如能耗高、电解效率低以及在后续处理高锑阳极泥难度大成本高等等。如果能够通过预处理深度除锑,就可以彻底克服底铅现行电解工艺的缺点。因此,本文研究了通过真空控氧氧化法实现底铅深度除锑的新工艺。试验结果表明:在温度为933K、真空处理时间为210分钟、空气流速为3L/min的条件下,底铅的锑含量可由14.37%降至0.38%,锑的去除率达到97%以上,副产品冷凝物中PbO的含量小于1%。
中文关键词: 脆硫铅锑矿  底铅    分离  真空控氧氧化法
Abstract:Low-purity lead bullion containing about 15% by weight antimony is a byproduct obtained in treating jamesonite ore in China. Up to now, the electrolytic refining is the only process for treating the low-purity lead bullion to product pure lead. However, the low-purity lead bullion contains only 80–85% by weight lead, leading to a lot of serious drawbacks such as high energy consumption, the poor efficiency of electrolytic refining, diffculty of treating high-antimony anode slimes in the subsequent process and so on. The previous selective removal of antimony may contribute to improve the current situation. Therefore, dynamic process based on the oxygen-controlling method under vacuum condition, a new method to remove antimony from low-purity lead bullion, was developed in this work. The experimental results revealed that the antimony content from low-purity lead bullion decreased from14.37% to 0.38%. Namely, 97.87% by weight of antimony can be removed and the PbO content in the distillate is below 1% under following experimental conditions: melt temperature of 933K, vacuum treatment time of 210 min, and air flow rate of 3L/min, corresponding to the residual gas pressure of 13KPa.
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基金项目:中央引导地方科技发展专项资金项目(共伴生有色金属资源加压湿法冶金技术国家重点试验室);科研院所技术开发研究专项基金(2018DC010)。
引用文本:
包稚群,付帮帮,丘克强.真空控氧氧化法实现底铅深度除锑[J].矿冶,2019,28(4):.

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