Title: Compound fertilizer by spray granulating and preparation thereof
Application Number: 89101936 Application Date: 1989.03.30
Publication Number: 1040189 Publication Date: 1990.03.07
Approval Pub. Date: Granted Pub. Date: 1994.04.20
International Classifi-cation: C05G1/00
Applicant(s) Name: Wang Changshan Address:
Inventor(s) Name:
Attorney & Agent: ZHANG XILI HUANG ZHIJIAN
Abstract:
     The present invention refers to a spray granulation method. The heated slurry contg. N and K2O is sprayed by the pressure exerted on the liquid surface into granulation system to combine with Ca-Mg-P or pretreated conventional calcium, high calcium contg. potassium fertilizer, medium- and micro-element contg. powdered additives, using Ca-Mg-P as neutralizer. The granular compound fertilizer contg. N, P, K, Ca, MgO, B, Zn, etc. is finally obtained through wet congealing, condensing, and granulating. The method of the present invention has the advantages of simple technology, continuous process, high yield and even granularity without binder.
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