摘要
现有铬盐生产技术阻碍了铬盐行业的清洁化发展,研发新型铬盐生产技术实属必要。中国科学院青海盐湖研究所自行研发出一套以电化学法为基础的铬盐清洁生产工艺,涵盖三条大工艺和四种母系铬盐产品。包括氢氧化钠溶液中电化学氧化铬铁制备铬酸钠联产三氧化二铬和三氧化二铁工艺,离子膜电解法从铬酸钠合成重铬酸钠工艺,以及离子膜电解法从重铬酸钠合成铬酸酐工艺。相比现有铬盐生产技术,该技术的优势主要体现在以下五点:温和化、去渣化、高值化、自动化和高效化。目前相关研发工作业已走出实验室,走过产业化中间试验,正向产业化示范线迈进。
The existing production technology hinders the development of the chromate industry,and it is necessary to develop new chromate production technology.With the successful experience of membrane electrochemical method,Qinghai Institute of Salt Lakes of the Chinese Academy of Sciences has developed a set of chromate cleaning production process based on electrochemical method,covering three large processes and four maternal chromium compounds.Such as preparation of sodium chromate by electrochemical method using high carbon ferrochrome as raw material and co-production of chromium oxide and ferric oxide,synthesis of sodium dichromate from sodium chromate by ion-exchange membrane electrolysis,and synthesis of chromic anhydride from sodium dichromate by ion-exchange membrane electrolysis.Compared with the existing chromate production technology,the advantages of this technology are mainly reflected in the following five points:mild,de-slag,high value,automation and high efficiency.At present,relevant research and development work has gone out of the laboratory,passed the intermediate test of industrialization,and is moving towards the industrialization demonstration line.
作者
冯海涛
董亚萍
梁建
李波
张波
李武
郑竹林
FENG Hai-tao;DONG Ya-ping;LIANG Jian;LI Bo;ZHANG Bo;LI Wu;ZHENG Zhu-lin(Key Laboratory of Comprehensive and Highly Efficient Utilization of Salt Lake Resources,Qinghai Institute of Salt Lakes,Chinese Academy of Sciences,Xining,810008,China;Qinghai Engineering and Technology Research Center of Salt Lake Resources Development,Xining,810008,China)
出处
《盐湖研究》
CSCD
2019年第4期9-17,共9页
Journal of Salt Lake Research
基金
青海省科技厅基础研究项目(2017-ZJ-786)
青海省重大科技专项(2016-GX-A10)
关键词
电化学方法
铬酸钠
三氧化二铬
重铬酸钠
铬酸酐
清洁工艺
Electrochemical method
Sodium chromate
Chromium oxide
sodium dichromate
chromic anhydride
cleaning process
