以碲化铜制食品添加剂级硫酸铜的研究  

Study on Preparation of Food Additive Grade Copper Sulfate with Copper Telluride

作　　者：梁鉴华 陈秋旭 刘威 梅占强 张雅静 王波 Liang Jianhua;Chen Qiuxu;Liu Wei;Mei Zhanqiang;Zhang Yajing;Wang Bo(RPM Co.,Ltd.,Qingyuan 511500;National Engineering&Technology Research Center of Scattered Metals,First Rare Metals Co.,Ltd.,Qingyuan 511500,China)

机构地区：[1]广东先导稀贵金属材料有限公司,广东清远511500 [2]国家稀散金属工程技术研究中心,广东先导稀材股份有限公司,广东清远511500

出　　处：《广东化工》2022年第1期69-70,共2页Guangdong Chemical Industry

摘　　要：硫酸铜是一种重要的无机化工产品,可用于食品添加剂中,以碲化铜为原料生产硫酸铜,将会极大地丰富硫酸铜的原料来源及降低生产成本。为此,本文研究了碲化铜经硫酸浸出的硫酸铜溶液中砷、铁等元素的脱除条件,制作出食品添加剂级别的硫酸铜产品。结果表明,硫酸铜溶液中加入理论量2倍的双氧水、理论量1.5倍的硫酸铁、pH=2.5时,最终结晶的硫酸铜产品Fe:1 ppm、Pb:1 ppm、As:1 ppm,杂质含量能达到国标要求。Cupric sulfate is an important inorganic chemical product, which can be used in food additives. The production of cupric sulfate with cupric telluride as raw material will greatly enrich the raw material source of cupric sulfate and reduce the production cost. In this paper, the removal conditions of arsenic, iron and other elements in copper sulfate solution leached by sulfuric acid from copper telluride were studied. The results show that the final product Fe: 1 ppm, Pb: 1 ppm, As:1 ppm can meet the requirement of national standard by adding 2 times hydrogen peroxide, 1.5 times ferric sulfate and pH=2.5 in the solution of copper sulfate.

关 键 词：硫酸铜 砷含量 双氧水加料量 硫酸铁加料量 PH 食品添加剂 

分 类 号：TQ[化学工程]