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1.发明授权
公开(公告)号：US3619162A
公开(公告)日：1971-11-09
申请号：US3619162D
申请日：1969-04-04
Applicant: BASF AG
Inventor： POTTGIESSER HERMAN , ZAPP KARL HEINZ
CPC classification number: C05B11/06
Abstract: To prepare suspension fertilizers from nitric acid solutions of phosphate rock the solutions are neutralized in an already neutralized solution in a vessel by means of ammonia and/or an ammonium salt of carbonic or carbamic acid, a pH of from seven to 10 and a temperature of from 10* to 50* C. being maintained. During or immediately after the neutralization, substances containing carbonate ions and/or forming carbonate ions in solution are introduced. The finished suspension should have a CO3 (--) content of at least 0.2 percent by weight.
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