Method for producing potassium sulphate fertilizer by using phosphogypsum
A technology of phosphogypsum and sulfuric acid, applied in potash fertilizers, applications, inorganic fertilizers, etc., can solve the problems of difficult industrial amplification, difficult to handle phosphoric acid, complicated equipment, etc., and achieve the effects of easy availability, suitability for industrial production, and low raw material prices
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[0026] Example 1
[0027] A method for producing potassium sulfate fertilizer by using phosphogypsum; the method is to fully mix 20% by weight of phosphogypsum and 80% of potash layer stone powder and then calcinate, the calcining temperature is 1800°C, and the calcining time is 2 minutes.
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[0028] Example 2
[0029] A method for producing potassium sulfate fertilizer using phosphogypsum; the method is to fully mix 30% by weight of phosphogypsum and 70% of potash layer stone powder and then calcinate, the calcining temperature is 1500 DEG C, and the calcining time is 30 minutes.
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[0030] Example 3
[0031] A method for producing potassium sulfate fertilizer by using phosphogypsum; the method is to fully mix 40% by weight of phosphogypsum and 60% of potash layer stone powder and then calcinate, the calcining temperature is 1200 DEG C, and the calcining time is 40 minutes.
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