Production Method Of Strontium Sulfate

85g of Strontium Nitrate Sr(NO3)2 was heated and dissolved in 500mL of water, and 20mL of concentrated sulfuric acid with a relative density of 1.84 was added to 30mL of water to make a dilute acid solution. The sulfuric acid solution is slowly added to the strontium Nitrate solution under stirring, and the Strontium Sulfate can be precipitated. Continue heating in the water bath for a while to make the precipitate completely mature, add an appropriate amount of water, wash the precipitate, let it stand, and pour out the supernatant. After repeated washing several times, filter through a microporous glass filter. After washing 2-3 times with a small amount of water, it was dried at 200°C. The yield can reach more than 95%.

Strontium Sulfate can be prepared by the lapis lazuli purification method. If high-purity products are needed, sulfuric acid or alkali metal sulfates can be added to the aqueous solution of soluble strontium salts (such as strontium Chloride or strontium nitrate), and large needle-like crystalline hydrous salts are initially precipitated from the concentrated solution. water salt

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