利用碱式氯化铜母液制备工业级氯化铵的研究  

Study on Preparation of Industrial Grade Ammonium Chloride by Copper Chloride Hydroxide Mother Liquor

作　　者：宋传京 彭娟 

机构地区：[1]深圳市深投环保科技有限公司,广东深圳518049

出　　处：《广东化工》2017年第14期51-52,71,共3页Guangdong Chemical Industry

摘　　要：本文基于废水特性,提出一级沉淀-二级离子交换-三级蒸发结晶的组合工艺对碱式氯化铜母液进行资源化回收利用。结果表明:沉淀剂与硫酸根的摩尔比大于等于1.3时,经螯合树脂吸附除重金属后,结晶所得氯化铵产品中的硫酸根含量低于0.02%,重金属含量低于0.0005%,氯化铵含量大于等于99.3%,产品质量优于GB2946-92一等品中的指标要求。新生成的硫酸钡沉淀对体系中的构晶元素(SO42-、Ba2+)具有表面吸附共沉淀效应。In this paper, based on the wastewater characteristics, recycling of copper chloride hydroxide mother liquor by the combined process of precipitation-ion exchange - evaporation crystallization. Research indicated that the quality of ammonium chloride is better than the first grade in GB2946-92 under the conditions of the mole ratio of precipitant and sulfate ion greater than or equal to 1.3,and using the combined process, of which the content of sulfate is below 0.02 %, the content of heavy metal is below 0.0005 %, the content of ammonium chloride is greater than or equal to 99.3%.The newly precipitate of barium sulfate call adsorb SO4^2＋ and Ba^2＋ ,then coprecipitation.

关 键 词：氯化铵 碱式氯化铜 钡盐 离子交换 硫酸根 

分 类 号：TQ[化学工程]