本文已被：浏览 2233次 下载 1782次
投稿时间：2021-11-11 修订日期：2021-11-16 录用日期：2021-11-19 网络发布日期：2022-03-15
投稿时间：2021-11-11 修订日期：2021-11-16 录用日期：2021-11-19 网络发布日期：2022-03-15
中文摘要: 开展了两种加压浸出工艺处理锌浸出渣的试验研究。“加压还原浸出+氧压浸出”取代原针铁矿工艺的“三段逆流热酸浸出+还原”，锌焙烧矿到铅渣的渣率为15.74%，锌、铁、铜、铟、镁的浸出率分别为99.32%、93.50%、95.02%、91.03%、99.97%，各项指标均优于原工艺，锌、铟的浸出率分别提高了1.82、11.03个百分点，反应时间由14 h缩短为4 h，液固分离次数由4次减少为2次。“两段逆流加压浸出”取代原黄钾铁矾工艺的“硅浸+预中和+黄钾铁矾沉铁”，锌焙烧矿到二段渣的渣率为35.88%，锌、铁、铜、铟、镁的浸出率分别为98.50%、4.94%、90.48%、2.69%、93.77%，各项指标均优于原工艺，浸出后液（相当于水解除铁后液）可以直接返回中性浸出工序，反应时间由16 h缩短为4 h，液固分离次数由3次减少为2次。加压浸出采用密闭的加压釜，更容易实现整个炼锌系统蒸汽平衡，无需额外增加蒸汽锅炉。
Abstract:Experimental study on two technologies of pressure leaching on zinc leaching residue were studied. “The reduction pressure leaching + oxygen pressure leaching” was replaced a part of the technology of goethite, its slag yield is 15.74%, and leaching rate of Zn, Fe, Cu, In, and Mg is 99.32%, 93.50% , 95.02%, 91.03%, and 99.97%, respectively. All indexes are better than that of the original process, leaching rate of zinc and indium rises by 1.82 and 11.03 percentage points respectively, reaction time shortens from 14 h to 4 h, and the number of liquid-solid separation reduces from 4 times to 2 times. “Two counter current pressure leaching” was replaced a part of the technology of jarosite, its slag yield is 35.88%, and leaching rate of Zn, Fe, Cu, In, and Mg is 98.50%, 4.94%, 90.48%, 2.69%, and 93.77%, respectively. All indexes are better than that of the original process, the leach solution can be reused in neutral leaching directly, reaction time shortens from 16 h to 4 h, and the number of liquid-solid separation reduces from 3 times to 2 times. Pressurized leaching adopts closed autoclave, which is easier to realize steam balance of whole zinc smelting system without additional steam boiler
文章编号： 中图分类号： 文献标志码：
基金项目:云南省科技创新人才计划项目（2019HC025）
引用文本：
吴钧,曾鹏,周中华,姜艳,邱伟佳,张少博,杨全胜,王禹.两种加压浸出工艺处理锌浸出渣试验[J].有色金属（冶炼部分）,2022(4):31-35.
WU Jun,ZENG Peng,ZHOU Zhong-hua,IAN Yan,QIU Wei-jia,ZHANG Shao-bo,YANG Quan-sheng,WANG Yu.Study on Two Technologies of Pressure Leaching on Zinc Leaching Residue[J].Nonferrous Metals (Extractive Metallurgy),2022(4):31-35.
吴钧,曾鹏,周中华,姜艳,邱伟佳,张少博,杨全胜,王禹.两种加压浸出工艺处理锌浸出渣试验[J].有色金属（冶炼部分）,2022(4):31-35.
WU Jun,ZENG Peng,ZHOU Zhong-hua,IAN Yan,QIU Wei-jia,ZHANG Shao-bo,YANG Quan-sheng,WANG Yu.Study on Two Technologies of Pressure Leaching on Zinc Leaching Residue[J].Nonferrous Metals (Extractive Metallurgy),2022(4):31-35.
关注微信公众号