|
| 氯化铅渣中铜、银和铅的分步浸出回收 |
| Stepwise leaching and recovery of copper, silver and lead from lead chloride slag |
| Received:June 10, 2022 |
| DOI： |
| 中文关键词: 氯化铅渣 浸出分离 铜 硫酸钠 银 氨水 |
| 英文关键词: lead chloride slag leaching and separation copper sodium sulphate silver ammonia water |
| 基金项目:国家重点研发计划项目(2018YFC1902002) |
| Author Name | Affiliation | | ZHAO Zhupeng | Shandong Humon Smelting Co. Ltd., Yantai 264109, Shandong, China | | ZHANG Shanhui | Shandong Humon Smelting Co. Ltd., Yantai 264109, Shandong, China | | CUI Jiayou | Shandong Humon Smelting Co. Ltd., Yantai 264109, Shandong, China | | ZHANG Teng | Shandong Humon Smelting Co. Ltd., Yantai 264109, Shandong, China | | HOU Shaobin | Shandong Humon Smelting Co. Ltd., Yantai 264109, Shandong, China |
|
| Hits: 359 |
| Download times: 202 |
| 中文摘要: |
| 采用分步浸出工艺回收铋精炼过程中产生的氯化铅渣中的铜、银和铅，先在低酸条件下浸出铜，与铅银分离，然后通过氨浸分银的方式实现铅与银的分离，用优化方案进行了流程试验。结果表明，在铜浸出阶段，控制反应初始pH为3，加入量为理论耗量1.1倍的硫酸钠，液固比为5:1，75 ℃浸出1.5 h，氯化铅渣浸出渣中铜含量降至0.1%，浸出液中银含量不超过2 mg/L；在银浸出阶段，控制氨水浓度为7%，50 ℃浸出1.5 h，浸出渣中银含量降低至100 g/t；流程试验结果表明工艺具有良好的综合回收效果。 |
| 英文摘要: |
| A step-by-step leaching process was used to recover copper, silver and lead from the lead chloride slag generated during the bismuth refining process. Copper was first leached under low acid conditions and separated from lead and silver. Then, the separation of lead and silver was achieved through ammonia leaching. Process experiments were conducted using an optimized scheme. The results showed that in the copper leaching stage, by controlling the initial reaction at pH of 3 and liquid-solid ratio of 5:1, adding 1.1 times sodium sulfate, and leaching at 75 ℃ for 1.5 hours, the copper content in the leaching residue of lead chloride slag could be decreased to 0.1%, and the silver content in the reaction solution was not more than 2 mg/L. In the silver leaching stage, by controlling the ammonia concentration at 7%, and leaching at 50 ℃ for 1.5 hours, the silver content in the leaching could decreased to 100 g/t. The process test indicates that a good comprehensive recovery outcome can be realized by this technique. |
|
View Full Text
View/Add Comment Download reader |
| Close |
|
|
|