Study on ammonia pretreatment of calcium superphosphate to achieve soilless granulation
Calcium superphosphate pretreated with ammonia water can instead of clay to achieve the goal of soilless granulation,improving the pelletization rate of fertilizer products and reducing the cost of raw materials.Through experimental analysis,it is concluded that ammonia pretreatment of calcium superphosphate can significantly improve the pelletization rate of the product.The water content decreases with the increase of the amount of ammonia,and the water-soluble phosphorus content decreases with the increase of the addition amount of ammonia.The optimum dosage of ammonia water is determined when the mass ratio of calcium superphosphate to ammonia water is 4.
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