Title: Wrapped fertilizer and its manufacture
Application Number: 85101008 Application Date: 1985.04.01
Publication Number: 1000282 Publication Date: 1986.02.10
Approval Pub. Date: Granted Pub. Date: 1988.03.09
International Classifi-cation: C05B7/00,C05B19/00,C05C1/02,C05C3/00,C05C9/00
Applicant(s) Name: Zhengzhou Polytechnical College Address:
Inventor(s) Name: Fan Jixuan, Wang Guangcheng
Attorney & Agent: HU ZHANGUO
Abstract:
     This is a new kind of mixed granulated fertilizer which has a nitrogenous fertilizer core, a phosphate fertilizer auter covering and these two are bound together by nitrogenous-phosphate mud. Between the core and the outer covering, there may be a layer consisting of potash fertilizer, trace elements, form chmicals and plant growth hormones. The wrapped fertilizer has the characterics of both covering ferfilizer and multicomponent ferfilizer. The effective binder used is made from calcium magnesiun phosphate, ammonium carbonate, and industrial dilute acids, all these being readily available in China, and successfully overcomes the failure of calciun magnesium phosphate and nitrogenous fertilizer to stick to each other.
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