A kind of organic-inorganic compound fertilizer and preparation method thereof

Abstract

The invention discloses an organic-inorganic compound fertilizer and a preparation method thereof. The organic-inorganic compound fertilizer is prepared from an organic fertilizer formed by fermenting pig manure and a sesame cake, urea, ammonium sulfate, bicarbonate, monoammonium phosphate, calcium superphosphate, potassium chloride, an anti-caking liquid and an anti-caking agent according to a proportion. The preparation method comprises the following steps: (A) separating solids out of wet cow dung by a solid-liquid separation machine and mixing with a rapeseed cake according to the predetermined proportion for fermentation; (B) mixing the organic fertilizer with urea, monoammonium phosphate, potassium sulfate and ammonium sulfate; (C) crushing a mixture; (D) transmitting the materials after crushing into a granulating machine for granulation; (E) transmitting particles into a drying machine for granulation and drying; (F) cooling the particles after drying; (G) granulating the particles after cooling; (H) polishing the particles; and (I) packaging the particles. The organic-inorganic compound fertilizer has the advantages of good effects, low cost, convenience in use and broad practicality, and is widely suitable for application in soil of paddy fields and dry lands in the south of China.

Description

technical field [0001] The invention relates to the technical field of agricultural fertilizers, more specifically to an organic-inorganic compound fertilizer, and also to a preparation method of the organic-inorganic compound fertilizer. The method is suitable for compound fertilizer fertilizer plants to produce organic-inorganic compound fertilizer, and its preparation method is also suitable for producing inorganic compound fertilizer and organic-inorganic biological compound fertilizer. Background technique [0002] Fertilizer is an indispensable and important agricultural material for high and stable crop yields. The production and use of chemical fertilizers play an important role in ensuring national food production and security. However, the long-term use of chemical fertilizers leads to the destruction of the cultivated soil structure, resulting in soil compaction and soil acidification, especially in the southern paddy fields. Due to the long-term and large-scale a...

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Problems solved by technology

[0004] In terms of the manufacturing process of organic-inorganic compound fertilizer, the Chinese invention patent CN 10250367 B (2014) announced a production process and equipment for bio-organic-inorganic three-in-one compound granular fertilizer. The fermented bio-fertilizer raw material is granulated by a model granulator, then added with biological bacteria, and coated to make a bio-organic compound granular fertilizer. At the same time, the organic-inorganic compound granular fertilizer is made by mixing the fermented biological fertilizer raw material and inorganic fertilizer; and then the 2 The composite particles are mixed in proportion, but the process is more complicated

CN 100357230C (2007) announced a kind of organic-inorganic compound fertilizer agglomeration-wrapping non-drying granulation method, the method is to use the hydration reaction of some raw materials added in the material to convert part of the free water in the granular fertilizer into crystal water , the water content in the fertilizer can be reduced to less than 10% without drying; but the added raw materials such as hemihydrate gypsum and cement have a certain impact on the organic-inorganic compound fertilizer

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