Title: Process for producing potassium ammonium dihydrogen phosphate
Application Number: 92108206 Application Date: 1992.07.13
Publication Number: 1083034 Publication Date: 1994.03.02
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: C05B11/00
Applicant(s) Name: Chengdu Univ. of Science and Technology Address: 610065
Inventor(s) Name: Zhong Benhe, Yang Jingchang
Attorney & Agent: HUANG YOULING
Abstract:
     A process to produce potassium ammonium dihydrogen phosphate includes such technological steps as preparing solution of monoammonium phosphate from wet phosphoric acid, metathesis of said solution and potassium chloride in ratio of 0.7 to 1 at 50-80 deg.C, cooling crystallization at -10 - 30 deg.C, centrifugal separation and drying. The product features N content above 5%, P2O5 content above 50%, K2O content above 18%, total yield of 60-80%, Cl content less than 2% and reduced cost by 20-30%.
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