摘要
目前国内外锌电解液中锌的电解废液酸锌比一般控制在2．5～4．0：1之间，某湿法电锌企业2011年1月以前电解废液酸锌比也只在3～4．5：1之间，锌液的利用率比较低，只有60％左右。经电解产出的废液返回浸出工序做浸出剂，会导致浸出液粘度增大，电解时电阻增大、电单耗升高；锌被浸出的同时原料中的其它杂质也被浸出出来，必须对浸出液进行除杂处理，随着杂质的开路，有一部分锌也被带走，造成锌的损失，同时还要增加能源、原辅料消耗，增加处理成本等问题，因此，探索合适的酸锌比对降低电锌溶液处理成本、节约能源有着重要作用。
The acid and zinc ratio in the zinc electrolysis waste liquor is usually controlled within 2.5 -4. 0：1 at present in do- mestic and overseas, the acid and zinc ratio of one wet electrolytic zinc enterprise before January of 2011 is only within 3 -4. 5： 1, the utili- zation rate of liquid zinc is low, its only around 60%. The waste liquor produced by electrolysis shall return back to leaching procedure acted as leaching agent, which will result in viscosity increasing of leaching liquid, the resistance enhancement while electrolysis, the unit power consumption increasing; when zinc is leached out, the other impurities in the raw materials are leached out too, so purification procedure shall be done for the leaching liquid, while the impurities are removed, a part of zinc is removed too, so it generate zinc loss, and at the same time, the consumption of energy sources, raw materials, auxiliary materials are also increased, as well as the treatment cost, and so on, so exploration of the proper acid and zinc ratio has the very important function for decreasing of the zinc electrolyte treatment cost and en- ergy saving.
出处
《云南冶金》
2016年第4期47-50,共4页
Yunnan Metallurgy
关键词
电解液
电解废液
酸
锌
利用率
electrolyte
electrolysis waste liquor
acid
zinc
utilization rate
