Wet-preparation process for mancozeb water dispersible granules

Abstract

The invention discloses a wet-preparation process for mancozeb water dispersible granules, which aims to solve the technical problems of heavy pollutions and difficult storage, transport and dissolution of agricultural carmazine. The adopted technical scheme is that: the preparation process is realized by a dispersion machine, a grinding machine and a spray granulation and drying tower, and specifically comprises the following steps of: adding crude mancozeb and a filler into a dispersion tank of the dispersion machine, and fully mixing the ingredients to form uniformly-dispersed slurry by using the dispersion machine; feeding the uniformly-dispersed slurry into a grinding hopper of the grinding machine by using a feeding pipeline, and performing grinding by using the grinding machine; and feeding the ground slurry to the spray granulation and drying tower, and performing spray granulation by using granulation spray orifices to form the mancozeb granules. The key of the wet-preparation process is that: the crude mancozeb and the filler are crushed by a wet method, so dust pollutions to the atmosphere are reduced and economic cost is saved.

Description

technical field [0001] The invention relates to a preparation process of mancozeb granules, which is applied to the field of agricultural mancozeb sterilization, in particular to a wet preparation process of mancozeb water-dispersible granules. Background technique [0002] At present, the agricultural mancozeb fungicides in the domestic market have formulations such as wettable powder, wet suspension concentrate and columnar solid dispersant. Mancozeb wettable powder is a traditional solid dosage form. During the production process, mancozeb original drug is crushed by dry airflow. The particle diameter of mancozeb original drug is crushed to about 2 μm, which is very small. Dust easily penetrates protective clothing in the air and harms human health. The particles are scattered with the wind and are difficult to deposit, which aggravates air pollution and is prone to dust explosions, posing a threat to personnel and property. In order to avoid the occurrence of the above ...

AI Technical Summary

Problems solved by technology

[0003] In order to solve the technical problems of strong pollution of mancozeb wettable powder, difficult storage and transportation of wet suspending agent and poor water dispersibility of columnar solid dispersant, the present invention designs a wet method for preparation of mancozeb water dispersible granules Technology, through the use of wet crushing and grinding technology, solves the technical problems of environmental pollution and cost waste caused by flying dust in the production process of mancozeb, and the mancozeb particles formed by the spray granulation tower have a new type of structure, it can disintegrate quickly when it encounters water, and the process is simple, which overcomes the shortcomings of the existing technology

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