锌二次资源生产电锌流程技术改造工业实践

Industrial Practice of Technological Transformation of Zinc Secondary Resource Production Process for Electric Zinc Production

摘要

分析了某公司锌二次资源回收电锌生产工艺中存在的浸出工艺不完善、浸出除杂工序及净化工序存在短板、电解工序存在循环量不足、废液循环降温能力差、电解电效低、熔铸直收率低及浮渣含氯高等工艺、设备问题，导致电锌生产系统存在产量低，经济技术指标差，加工成本高等问题；通过对电锌生产系统中浸出工序进行工艺完善、优化除氯及除铁工艺、增加净化溶液冷却塔和净化渣洗涤工艺、改善电解循环泵进液和改造废液冷却塔、增加阳极板平板机，改良熔铸造渣等工艺设备优化，加强操作培训等辅助措施，稳定生产操作，解决了电锌生产系统产量低、技术指标差和加工成本高的问题。

Abstract

An analysis was conducted on the imperfect leaching process, shortcomings in the leaching and purification processes, insufficient circulation in the electrolysis process, poor cooling ability of the waste liquid circulation, low electrolysis efficiency, low casting yield, and high chlorine content in the floating slag in the zinc secondary resource recovery production process of a certain company. These problems led to low output, poor economic and technical indicators, and high processing costs in the zinc production system; By improving the leaching process in the zinc production system, optimizing the chlorine and iron removal processes, adding purification solution cooling towers and purification slag washing processes, improving the inlet of the electrolytic circulation pump and transforming the waste liquid cooling tower, adding anode plate flatbed machines, improving the process equipment of melting and casting slag, strengthening operational training and other auxiliary measures, stable production operations have been achieved, and the problems of low output, poor technical indicators, and high processing costs in the zinc production system have been solved.

关键词

除氯 / 氧化除铁 / 废液冷却塔 / 平板机

Key words

Chlorine removal / oxidation and iron removal / waste liquid cooling tower / flat plate machine

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