Sodium sulfate production process

Could you clarify what will be used for production?

The raw material is mirabilite, namely sodium sulfate nonahydrate; through a physical impurity removal process and two evaporation steps, anhydrous sodium sulfate can be produced, which is commonly known as Glauber’s salt. The price is over 600 for 99%, and around 300 for 90%

Haha! There are many processes for producing sodium sulfate. A: For nitric acid solutions, the following methods exist: 1) Direct evaporation yields anhydrous sodium sulfate (provided it is a solution of sodium sulfate only). 2) Separation of nitrates, which results in both salt and nitric acid being produced (this applies to a saturated solution of sodium sulfate and sodium chloride). 3) Purification of the nitric acid solution to remove impurities, followed by separation of nitrates (this also applies to a saturated solution of sodium sulfate and sodium chloride, but one that contains impurities such as magnesium sulfate and calcium sulfate). B: If the raw material is mirabilite (which is actually sodium sulfate decahydrate, rather than sodium sulfate nonahydrate), the following methods can be used to convert it into anhydrous sodium sulfate: 1) Adding steam to dissolve it and convert it into a sodium sulfate solution, after which evaporation yields anhydrous sodium sulfate (the downside is high energy consumption). 2) Converting sodium sulfate decahydrate into sodium sulfate through thermal treatment, followed by centrifugal drying; the liquid obtained after centrifugation is then evaporated as well (this method is energy-efficient and represents the most advanced technology available internationally)

Our company removes sulfate ions from the brine used in production; the mirabilite that results from this process has no buyer, so it is simply flushed down the drain. This not only represents a waste but also causes environmental pollution. If you need it, I can help you get in touch with someone who might be interested. Our company is located in Guangrao, Shandong. :)

It depends on the components of your raw materials and the purpose of extraction. For mirabilite-type brine used in salt production, there are mainly two processes: domestic freeze-process nitrate extraction and the imported thermal-process nitrate extraction, as well as co-production of salt and nitrate. All of these are well-established processes.

You need to explain your raw materials before we can tell you the method. The method for producing anhydrous sodium sulfate through freeze nitration is an innovation of our company, and we can provide technical consultation.

What method do you use to remove sulfate ions? What is the quality of the resulting ten-water nitrate, and how much is produced?

It is obtained by extracting mirabilite from mines, followed by denitration, dehydration, and purification; mirabilite itself is derived from minerals, usually from well salt. In China, deposits can be found in places such as Honghu, and Nanfeng Chemical is the largest producer of sodium sulfate in the country.