Ammonium sulfate(fertilizer)

The N content is not lower than *1%. It is an excellent nitrogenous fertilizer, which is applicable to general soil and crop to promote vigorous growth of branches and leaves, improve fruit quality and production, and enhance the disaster resistance of crops, it can be used as basic fertilizer, additional fertilizer and seed fertilizer. It can make double decomposition reaction with salt to generate ammonium chloride, and can react with aluminum sulfate to produce ammonium alum, and with boric acid and other materials to produce refractories. When it is put into the plating solution for higher electrical conductivity, it can be used as catalyst for food caramel, nitrogen source for yeast cultivation during fresh yeast production, dyeing auxiliary for acid dyeing and deliming agent for leather. In addition, it is used for beer brewing, chemical reagent, accumulator production, etc. One of its important roles is mining of rare earth. Taking ammonium sulfate as raw materials, exchange for rare earth elements from minerals in an ion exchange manner, and then collect leach liquor. After simple filtering separation, dry up the leach liquor to generate raw rare earth. The ammonium sulfate consumption per tonne of raw rare earth is about 5t.