Method for preparing high-quality slow release compound fertilizer from wet-process phosphoric acid

The invention relates to the technical field of fertilizer, in particular to a method for preparing high-quality slow release compound fertilizer from wet-process phosphoric acid. The method comprisessteps as follows: (1) a neutralization reaction, (2) adsorption and (3) preparation of the slow release compound fertilizer. According to the method, the utilization rate of raw materials is high, the reaction is rapid, the production efficiency is high, large-scale production is facilitated, and the prepared compound fertilizer has small irritation to crops, mild fertilizer efficiency and remarkable effects on enrichment of soil mineral elements and breeding of soil microorganisms. 本发明涉及肥料技术领域，尤其涉及种利用湿法磷酸制备高质量缓释复合肥的方法，该方法包括如下步骤：(1)中和反应、(2)吸附、(3)缓释复合肥的制备，本发明方法原料利用率高，反应迅速，生产效率高，利于规模化生产，制备出来的复合肥对作物刺激性小，肥效温和，对于土壤矿质元素的丰富和土壤微生物的繁殖都有显著效果。