Fertilizer joint production method and special device thereof

Abstract

The invention relates to a fertilizer joint production method and a special device thereof, mainly used for producing organic granulated fertilizer and organic-inorganic mixed granulated fertilizer. The method comprises the following technical steps of: mixing, stirring, fermenting in windrow form, turning, thoroughly decomposing, drying, coarse grinding, screening, fine grinding, dosing, pelleting, drying, cooling, classified selecting, enveloped drying and dosing. Finally, special fertilizer, organic fertilizer powder, organic fertilizer granules, organic fertilizer products, enveloped organic fertilizer, BB fertilizer and the like can be produced. In the method, the drying temperature of the whole production process is controlled to be 60-70 DEG C, and the drying humidity is controlledto be 30%-35%, so that most of microbes can survive and the biological fertilizer efficiency effects obviously. By using a special fine grinding mill, the fertilizer having a water content of 30%-40%can be grinded, the production efficiency is improved tenfold, the grinding quality of the fertilizer is greatly improved, and the grain size of the grinded fertilizer granules can be controlled to be less than 1mm.

Description

(1) Technical field [0001] The invention relates to a fertilizer joint production method and its special equipment. Mainly used in the production of organic granular fertilizers and organic-inorganic mixed granular fertilizers. (2) Background technology [0002] Fertilizers on the market are usually divided into special fertilizer, ordinary fertilizer (powder), ordinary fertilizer (granule), coated fertilizer and BB fertilizer (also called blended fertilizer). [0003] The production process of granular fertilizer directly affects the production efficiency and quality of fertilizer. The traditional fertilizer production process is usually: ingredients → mixing → disc granulation → two high-temperature drying (complete drying) → screening → qualified products grading, packing and storing → unqualified products → entering the crusher and smashing again and entering the next one cycle. This process has the following shortcomings: [0004] 1. After two consecutive high-temperature dr...

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Problems solved by technology

[0005] 2. Fertilizer granules adopt the traditional disc granulation process, and the granulation quality and granulation efficiency are poor

[0006] 3. Due to the poor quality of granulation, a large amount of coarse material needs to be further crushed during fertilizer screening, and the production efficiency is low. At the same time, the granulation quality of the recycled material is obviously reduced when the recycled material is granulated again.

[0007] 4. The use of ordinary pulverizers, mainly through ring grinding granulation or flat grinding granulation or throwing sieve, etc., is prone to block passages during pulverization, resulting in shutdowns due to failures.

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