Method of preparing NPK composite fertilizer using straw ash

一种利用秸杆灰生产氮磷钾复合肥的方法

Abstract

一种利用秸秆灰生产氮磷钾复合肥的方法,属于农用肥料技术领域。氮磷钾复合肥组分重量份为:尿素18-30份,磷酸一铵12-30份,氯化钾7-25份,秸秆灰10-40份,酸度调节剂1.2-6份,黏合剂5-20份;经原料粉碎、添加、转鼓造粒、烘干、筛分称重包装制备而得。本发明氮磷钾复合肥氮、磷、钾养分含量大于30%,并含有秸秆灰中的中微量营养元素,养分配比全面、合理,无需配合其它肥料,可直接施用,适用于不同的土壤和农作物。生产设备简单,成本低,解决了现有肥料生产的不足,为秸秆发电产生的秸秆灰的合理利用提供了有效途径,减少了秸秆灰对环境的污染。
This invention relates to a preparation method for nitrogen phosphorus potassium (NPK) compound fertilizer for straw ash production, belonging to the field of agricultural fertilizer technology. NPK fertilizer includes (by weight parts) urea 18-30, monoammonium phosphate 12-30, potassium chloride 7-25, straw ash 10-40, acidity regulator 1.2-6, and adhesive 5-20. The method comprises smashing the raw materials, drum-granulating, drying, screening, weighing, and packaging to obtain the final product. The NPK contains nutrient nitrogen, phosphorus, potassium content greater than 30%, and medium-trace nutrients in gray straw, therefore having comprehensive and reasonable nutrition, can be applied directly to various soils and crops without need for other fertilizers. The production equipment is simple, and low cost, solving the inadequacy of the present fertilizer production. This invention provides an effective way for the straw ash generated from straw power and reduce the environmental pollution.

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Cited By (12)

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