The invention relates to a method for continuously producing feed-grade dibasic
calcium phosphate, belongs to the field of
phosphorus chemical industry, and aims to solve the technical problem for providing a method for continuously producing feed-grade dibasic
calcium phosphate dicalcium
phosphate. The method includes chemical units of a, performing reaction on
hydrochloric acid and phosphate rock, and filtering, washing and obtaining a solution 1; b, adding
calcium carbonate into the solution 1, filtering, washing and obtaining a solution 2,
drying the
filter cake, and obtaining
fertilizer-grade dibasic calcium phosphate; c, adding the
calcium carbonate and
lime into the solution 2, filtering, washing and obtaining a solution 3,
drying the
filter cake, and obtaining the feed-grade dibasic calcium phosphate; and d, adding the
lime into the solution 3, and filtering to obtain a calcium
chloride solution. According to the method for continuously producing the feed-grade dibasic calcium phosphate, the whole process, from feeding the
raw material to discharging products, are
continuous production, and the method has the advantages that production continuity is provided, device efficiency is high, and product quality is stable.