Title: Mfg. method for producing potassium dihydrogen phosphate compound fertilizer
Application Number: 90101583 Application Date: 1990.03.24
Publication Number: 1055167 Publication Date: 1991.10.09
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: C05B1/00,C05B19/00
Applicant(s) Name: Li Kunying Address: 515065
Inventor(s) Name:
Attorney & Agent:
Abstract:
     This invention provides a method for preparation of comoposite fertilizer of potassium dihydrogen phosphate using the waste fur and meat residue of animals as main raw materials. The method includes the procedure of hydrolysis of fur and meat residue with caustic potash, The procedure of chemical reaction between hydrolyzed solution and calcium superphosphate, and that of granulating. The composite fertilizer thus produced is rich in N,P, and K content, and is easily absorbed by crops, and at the same time, it provides an approach of effectively comprehensive utilization of traditional rubbish such as waste fur and meat residues.
Time: 9