Sulfuric acid method: sulfuric acid and magnesium oxide, magnesium hydroxide or magnesium carbonate neutralization reaction, after filtration, holding, crystallization, separation, drying is obtained.
1 industrial waste sulfuric acid liquid production of magnesium sulfate method
2 high temperature salt to produce magnesium sulfate and sodium chloride method
3 boromagnesite with sulfuric acid decomposition to produce boric acid by-products
Seawater sun salt bitter brine method
With three high method to produce magnesium sulfate, sodium chloride, potassium chloride production process
The production of magnesium sulfate from glazed tile waste
The production method of recovering magnesium sulfate from boric acid mother liquor
At present, the first, the second and the third production process are mainly used in China, the magnesium sulfate produced by the first process has high purity and less impurities, which is suitable for high-end market; the product produced by the second process has lower purity, more kinds of impurities and low cost, which is suitable for low-end market. The product produced by the third process is natural magnesium sulfate, low cost, high chlorine content, high content of many kinds of mineral elements, suitable for agriculture, the application in food, medicine, industrial industry is limited.
