(1. 昆明理工大学 冶金与能源工程学院，昆明 650093；
2. 昆明理工大学 省部共建复杂有色金属资源清洁利用国家重点实验室，昆明 650093；
3. 云南铜业股份有限公司，昆明 650051)
摘 要: 在碱性溶液中釆用加压氧化浸出对高铋铅阳极泥进行脱除砷锑的研究。考察氧化剂用量、氢氧化钠浓度、液固比、碱浸温度及反应时间对铅阳极泥脱砷、锑效果的影响，优选得到较佳的工艺条件，砷、锑的浸出率分别达到95%和80%以上。碱浸液冷却过滤结晶砷酸钠和锑酸铅后，采用过氧化氢进行沉锑处理，沉锑后的溶液再补加定量的氢氧化钠后能够返回浸出工艺，实现碱浸液的循环利用，并保证砷、锑的有效脱除。
关键字: 铅阳极泥；碱性加压氧化浸出；脱砷；脱锑
（1. Faculty of Metallurgical and Energy Engineering,
Kunming University of Science and Technology, Kunming 650093, China;
2. State Key Laboratory Breeding Base of Complex Nonferrous Metal Resources Cleaning Utilization,
Kunming University of Science and Technology, Kunming 650093, China;
3. Yunnan Copper Industry Limited by Share Ltd., Kunming 650051, China）
Abstract:The arsenic and antimony were removed from bismuth-rich lead anode slime by alkaline pressure oxidation leaching. The effects of factors including oxidant dosage, NaOH concentration, ratio of liquid to solid, leaching temperature and leaching time on the arsenic and antimony removal were investigated, and the optimal process conditions were determined by experiments. The results show that the leaching rate of arsenic and antimony can reach over 95% and 80%, respectively. The removal of antimony can be realized by adding hydrogen peroxide after the removal of crystal sodium arsenate and lead antimonate by cooling and filtration. The alkaline leaching solution is returned to the leaching process after adding quantitative sodium hydroxide, which achieves the recycling of alkaline solution and the effective separation of arsenic and antimony from other metals.
Key words: bismuth-rich lead anode slime; alkaline pressure oxidation leaching; arsenic removal; antimony removal
