What are the standards for salts used in ion-exchange membrane caustic soda production?
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I would like to ask what are the specific requirements for raw salt in the production of ion-exchange membrane caustic soda? Are there any requirements regarding the particle size of the raw salt? Thank you
The main parameters for raw salt are its salt content, calcium and magnesium levels, and sulfate content; there is no requirement regarding particle size, after all, the raw salt is meant to be dissolved into a solution for use. One issue is that the smaller the particle size, the harder it is to dissolve, which is a factor that needs to be taken into account.
Are there specific requirements for the particle size? For example, those that are less than a certain value will not be accepted; thank you
No specific requirements are needed; as long as the salt content is sufficient. It’s just that smaller particles dissolve more slowly, and this refers to refined salt.
I’ve checked many specifications, but none of them mention particle size; however, we’ve learned that some manufacturers refuse to purchase salts with small particle sizes. So I’m wondering if there is such a requirement – thank you for your help
What I mean by small particle size is referring to that kind of refined salt, the same type of table salt we use in our daily meals. The particles of regular crude salt are generally larger, so you can purchase it with confidence.
The situation is as follows: our company is a firm that specializes in the harmless treatment and comprehensive utilization of chemical waste salts. For the final drying of the finished product, two types of equipment are available for selection; however, one of them causes greater wear on the material. If there are requirements regarding particle size downstream, careful consideration must be given when choosing the equipment in this step
This post was last edited by LuC182 on 2016-10-9 at 15:36. Does \"downstream\" refer to chlor-alkali production? If so, choose equipment that produces larger particle sizes, as they dissolve more quickly during salt dissolution.
Our requirement is to use salt for ion-exchange membrane caustic soda. Thank you
The main parameters for raw salt are its salt content, calcium and magnesium levels, and sulfate content; there is no requirement regarding particle size, after all, the raw salt is meant to be dissolved into a solution for use. One issue is that the smaller the particle size, the harder it is to dissolve; this is something that needs to be taken into account, as smaller particles dissolve more slowly.
Yes, that’s the reason; however, we can’t find specific requirements regarding particle size, which prevents us from making a decision when choosing drying equipment for the finished products