What are the best raw materials for ion-exchange membrane caustic soda? Brine or salt?
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This post was last edited by sunjl1981 on 2013-1-6 21:14. I would like to ask what are the best raw materials for producing ion-exchange membrane caustic soda? Brine or salt? Are there any specific quality requirements for each? Please help me! # + + . hcbbs
Either is fine; generally, if the concentration of the brine does not meet the technical requirements, some salt still needs to be used. Of course, sea salt is better.
Either is fine; generally, as long as the concentration of the brine meets the technical requirements, using brine is cheaper
A mixture of brine and salt is the best option. Basically, no brine meets the technical requirements necessary for electrolysis. Brine is inexpensive, and adding some salt is better than using pure salt water
Brine contains high levels of impurities; sea salt is a better choice, as brine is not suitable.
Most companies use brine-based salts (both brine and salt are utilized), with brine being used primarily to reduce costs. The key parameters are: for crude salt, sodium chloride content ≥95%, calcium ions + magnesium ions ≤0.3%, sulfate content 1.5, moisture content <4%; for brine, sodium chloride content >300, calcium + magnesium
Of course, using brine is the best option; it’s inexpensive. However, its concentration isn’t sufficient, so some salt can be added to adjust the concentration； It is best to install a set of saltwater evaporation equipment to achieve full haline soda production.