提高湿法炼锌高浸渣银浮选收率的探究
An investigation into improving the silver flotation recovery rate of high-leaching residue in hydrometallurgical zinc production
张陈 1王延兴 1李世华 1周绍平 1刘虎 1张啸林1
作者信息
- 1. 四川宏达股份什邡有色金属分公司，什邡市 618400
- 折叠
摘要
针对湿法炼锌工艺中高浸渣银浮选收率偏低、精矿品位不高、尾矿含银偏高等问题，从原料焙砂物性、浸出解离、浮选矿浆调控、药剂制度及设备运行等多方面进行了系统分析与工艺探究。结果表明：焙砂粒度偏细（-100目达92%、-300目达30%且未烧透）导致矿浆泥化、泡沫夹带率上升，是造成银浮选指标恶化的关键因素；通过强化浸出控制、增大浮选矿浆液固比、控制矿浆金属离子含量、优化药量配比及降低矿浆温度等措施，可有效改善银的浮选富集效果，提高银精矿品位与回收率。本研究对同类湿法炼锌企业的银综合回收具有参考价值。
Abstract
To address the issues of low silver flotation recovery, low concentrate grade, and high silver content in tailings in the hydrometallurgical zinc smelting process, a systematic analysis and process investigation were conducted from multiple aspects including raw material roasting properties, leaching liberation, flotation pulp regulation, reagent system, and equipment operation. The results showed that the fine roasting particle size (-100 mesh reaching 92%, -300 mesh reaching 30% with insufficient roasting) led to pulp mudification and increased foam entrainment, which were the key factors causing the deterioration of silver flotation indicators. By implementing measures such as strengthening leaching control, increasing the liquid-solid ratio of the flotation pulp, controlling metal ion content in the pulp, optimizing reagent dosage ratios, and reducing pulp temperature, the silver flotation enrichment effect can be effectively improved, thereby enhancing the silver concentrate grade and recovery rate. This study provides reference value for the comprehensive recovery of silver in similar hydrometallurgical zinc smelting enterprises.关键词
湿法炼锌/高浸渣/银浮选/收率/焙砂粒度Key words
Wet zinc smelting/high-leaching residue/silver flotation/yield/roasting sand particle size引用本文复制引用
张陈,王延兴,李世华,周绍平,刘虎,张啸林.提高湿法炼锌高浸渣银浮选收率的探究[EB/OL].(2026-09-29)[2026-10-01].http://www.paper.edu.cn/releasepaper/content/202609-32.学科分类
有色金属冶炼
