A kind of ionic membrane multi-stage electrolysis process produces cobalt sulfamate

Abstract

The invention proposes a new process for producing cobalt sulfamate, which can achieve the purpose of rapid production of cobalt sulfamate through ion membrane electrolysis, and has high product quality and low sulfate radical content. The cobalt sulfamate is produced by the ionic membrane electrolyzer process, and the anion and cation move through the ionic membrane, so that the controllable selection of the target product can be realized, thereby obtaining high-purity cobalt sulfamate; the process of the present invention is simple in production process, and each process The parameters are easy to control, the production efficiency is high, the one-time recovery rate is high, there is no special requirement for production equipment, the labor intensity is low, the process consumption is less, and the production cycle is greatly shortened. It has been proved by large-scale industrial production that the process repeatability is very good. Industry promotion.

Description

technical field [0001] The invention relates to a process for producing cobalt sulfamate by an ion membrane multistage electrolysis method, in particular to the technical field of electrolytic chemistry. Background technique [0002] Cobalt sulfamate is an important electroplating main salt and catalyst raw material. There are two traditional production processes of cobalt sulfamate, one is made by reacting cobalt carbonate or cobalt hydroxide with sulfamic acid, and the other is metal cobalt It is worthwhile to react with sulfamic acid. The former requires high-quality cobalt carbonate or cobalt hydroxide, and when cobalt carbonate or cobalt hydroxide is produced, the metal and non-metal impurities in it are relatively high, which cannot meet the requirements for the use of cobalt sulfamate. And when using metal cobalt and sulfamic acid direct reaction, rate is slower, and reaction cycle is long, and sulfamic acid is hydrolyzed easily and produces sulfate radical, and sulfa...

AI Technical Summary

Problems solved by technology

[0002] Cobalt sulfamate is an important electroplating main salt and catalyst raw material. There are two traditional production processes of cobalt sulfamate, one is made by reacting cobalt carbonate or cobalt hydroxide with sulfamic acid, and the other is metal cobalt It is worthwhile to react with sulfamic acid. The former requires high-quality cobalt carbonate or cobalt hydroxide, and when cobalt carbonate or cobalt hydroxide is produced, the metal and non-metal impurities in it are relatively high, which cannot meet the requirements for the use of cobalt sulfamate. And when metal cobalt and sulfamic acid directly react, the rate is slower, and the reaction cycle is long, and sulfamic acid is easily hydrolyzed to produce sulfate radicals, and sulfate radicals have a great influence on the quality of cobalt sulfamic acid