How to prevent sodium sulfate decahydrate from caking
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This post was last edited by sunjl1981 on 2013-1-6 at 23:54. Dear friends, chlor-alkali plants that use membrane processes for nitrate removal currently face a common problem: the sodium sulfate decahydrate produced has no market, turning it into new solid waste. Now, our company has found users, but during use we have noticed that sodium sulfate decahydrate clumps severely, making it difficult to feed it into the system. Therefore, we are seeking advice from fellow professionals in this field on techniques to prevent the clumping of sodium sulfate decahydrate. ， ， -
Turn it into mirabilite; that way it shouldn’t happen anymore. If mirabilite can find a market, it’s really something to be grateful for
This post was last edited and replied to by david-2 on 2010-6-24 at 15:04. Reply to 2# flay0303: The amount of sodium sulfate decahydrate we have is not large, and it requires a lot of energy to convert it into Glauber’s salt; therefore, it’s not economically viable. That’s why we are considering the market for sodium sulfate decahydrate; many users add Glauber’s salt to water for use. If a way can be found to prevent sodium sulfate decahydrate from caking, it will benefit both us and our customers. Of course, this presents certain difficulties for those who need to transport the product over long distances.
This post was last edited by kikaka0510 on 2010-6-24 at 15:43. The reason for the caking of sodium sulfate decahydrate is that it is produced at low temperatures; typically, sodium sulfate decahydrate contains 5–8% of non-crystalline water. After production, some of the sodium sulfate dissolves, and as the temperature rises, more sodium sulfate dissolves while water evaporates, which leads to caking. I believe that to prevent caking of sodium sulfate decahydrate, it is necessary to control the temperature, but this approach is not very cost-effective. The best solution is to produce Glauber’s salt instead. Or use it before it clumps!
What was said upstairs is correct – in winter, we can store the product for 10 to 15 days without it clumping together. As the temperature rises, clumping becomes more and more severe; now, water often leaks out of the packaging bags, making storage difficult. But it is basically impossible to use it before it clumps together, as clumping is inevitable due to the need for manufacturers to keep inventory for transportation and use. I wonder if other Sichuan friends have any good suggestions. If we are successful, we would be happy to share this achievement with everyone.
Before use, just crush it with a crusher and then use it, right?
This post was last edited by Kang Zhaoyang on 2014-3-14 at 11:15. Our factory is in constant need of sodium sulfate decahydrate. May I ask in which city your company is located? Thank you, Mr. Huang!