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- Title
Deep removal of antimony from bottom lead by vacuum oxygen-controlled oxidation method.
- Authors
BAO Zhi-qun; FU Bang-bang; QIU Ke-qiang
- Abstract
The bottom lead containing about 15% antimony is a by-product in the treatment of jamesonite. Electrolytic refining is the main method to produce metal lead from bottom lead. However, due to the high antimony content in bottom lead, this method has the disadvantages of high energy consumption, low electrolytic efficiency, difficulty and high cost in subsequent treatment of high antimony anode slime. Aiming at this problem, the deep antimony removal of bottom lead by vacuum oxygen-controlled oxidation was studied. The effects of melt temperature, vacuum treatment time and air flow rate on antimony removal were studied, as well as the variation of PbO content in the evaporated products. The results show that under the conditions of temperature of 933 K, vacuum treatment time of 210 min and air flow rate of 3 L/min, the antimony content in the bottom lead can be reduced from 14.37% to 0.38%, the antimony removal rate is more than 97%, and the lead oxide content in the by-product condensate is less than 1%.
- Publication
Mining & Metallurgy (10057854), 2019, Vol 28, Issue 4, p75
- ISSN
1005-7854
- Publication type
Article
- DOI
10.3969/j.issn.1005-7854.2019.04.013