Soluble poly:phopsphate prodn.

摘要: Soluble polyphosphates suitable for use in making complex, clear neutral liquid fertilisers, are made from raw materials contg. phsophoric acid, anhydrous ammonia or potassium hydroxide. These heated to 60-100 deg. C and passed a reactor where they undergo an exothermic reaction at 350-400 under 2-3 kg/sq.cm. The prod. is solution tank then cooling tower, it cooled 45-70 during 15-20 sec. contains 25% polyphosphates, the continuous process self-supporting energy requirements.