Special fertilizer production method and special equipment thereof

Abstract

The invention relates to a special fertilizer production method and special equipment thereof, which are mainly used for producing an organic granulated fertilizer and an organic-inorganic mixed granulated fertilizer. The method comprises the following process steps of: mixing, stirring, performing windrow fermentation, turning, decomposing, drying, performing coarse grinding, screening, performing fine grinding and mixing. The drying temperature is controlled to be between 60 and 70 DEG C and the drying humidity is controlled to be 30 to 35 percent in the whole production process, so that most microorganisms can survive, and the biological fertilizer efficiency is obvious. The fertilizer with the moisture content of 30 to 40 percent can be ground by a special fine grinding machine, so that production efficiency is improved by ten times; and the grinding quality of the fertilizer is greatly improved, and the granule size of the ground fertilizer granules can be controlled to be 1mm and below.

Description

(1) Technical field [0001] The invention relates to a special fertilizer production method and special equipment thereof. It is mainly used in the production of special fertilizers for vegetables and fruit trees. (2) Background technology [0002] Fertilizers on the market are usually divided into special fertilizers, ordinary fertilizers (powder), ordinary fertilizers (granules), coated fertilizers and BB fertilizers (also called blended fertilizers). [0003] The production process of special fertilizer directly affects the production efficiency and quality of fertilizer. The traditional fertilizer production process is usually: batching→stirring→one-time high-temperature drying (complete drying)→screening→qualified products are graded and packed into storage→unqualified products→put into the pulverizer and crushed again before entering the next cycle. There are following deficiencies in this kind of technology: [0004] 1. After drying at high temperature, the microorg...

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Problems solved by technology

[0004] 1. After drying at high temperature, the microorganisms in the fertilizer are basically killed. This kind of fertilizer only acts to loosen the soil and add organic matter. At the same time, by adding inorganic additives (N, P, K) to fertilize the field, the fertilizer effect is very low. serious waste of resources

[0005] 2. Due to the large amount of coarse material produced during fertilizer screening needs to be further crushed, the production efficiency is low, and at the same time, the granulation quality is obviously reduced when the recycled material is granulated again

[0006] 3. The use of ordinary pulverizers, mainly through ring grinding granulation or flat grinding granulation or throwing sieves, etc., is prone to block passages during pulverization, resulting in failures and shutdowns. At the same time, this process has large dust, high noise, and serious environmental pollution.

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