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申请(专利权)人:西北农林科技大学,陕西昊威工贸有限公司申请日期:2010.08.11申请(专利)号:201010250930.4主分类号:C05G3/00(2006.01)I本发明公开了一种有机-无机复混肥料的制备工艺,将硝酸与褐煤反应完成后过滤分离,得到包含褐煤硝化腐植酸的有机质沉淀,再将褐煤硝化腐植酸与无机肥料进行配比,之后分别制备成褐煤硝化腐植酸盐-尿素次级肥料颗粒和褐煤
Application (Patent) Person: Northwest A & F University, Shaanxi Haowei Industry and Trade Co., Ltd. Application date: 2010.08.11 Application (patent) No .: 201010250930.4 Main article No .: C05G3 / 00 The present invention discloses an organic - inorganic compound fertilizer preparation process, the reaction of nitric acid and lignite after the completion of filtration and separation, to obtain a lignite containing nitric acid humic acid organic precipitation, and then lignite nitration humic acid and inorganic fertilizers were ratio, respectively, were prepared into lignite nitration humic acid Salt - urea secondary fertilizer particles and lignite