Processing method of inorganic copper preparation

Abstract

The invention aims to provide a processing method of an inorganic copper preparation, which comprises the following steps: (1) adding an inorganic copper raw medicine into a premixer, mixing for 30 minutes, setting the rotating speed of a grading wheel motor of a crushing main machine to be not less than 4000 revolutions per minute, starting an airflow crushing induced draft fan, opening an air inlet valve of the main machine, controlling the pressure of compressed airflow to be not less than 0.8 Mpa, opening a feeding valve to enable the materials to pass through a jet mill at a constant speed, and performing jet milling through classification to obtain pretreated materials with the particle size D97 of less than 25 microns. According to the present invention, the pretreatment work of the effective components of the inorganic copper-containing preparation can be prepared in advance in the slack season during the production, the batch production can be rapidly achieved during the post-mixing crushing, and the equipment utilization rate and the production efficiency are improved to meet market supply; 2, enabling the product produced by adopting the new process to have narrow particle size distribution, so that the product with high suspension rate can be obtained more easily; and 3, greatly improving the mixing suitability of the product produced by adopting the new process.

Description

technical field [0001] The invention relates to an inorganic copper preparation, in particular to a processing method of the inorganic copper preparation. Background technique [0002] Inorganic copper preparations are the top-ranked fungicides in the world, with annual sales of more than 600 million US dollars, and have been used worldwide for more than 100 years. From the perspective of the international market, as the first commercialized pesticide variety, the application of copper preparations has been very stable. Due to its excellent dual killing effect on fungi and bacteria, it has occupied a leading position in the international market for a long time. [0003] However, it is such a broad-spectrum, low-cost, and non-resistant fungicide that has been in a tepid situation in China for a long time. Due to the use of domestic inorganic copper preparations, the phenomenon of "copper fear" such as phytotoxicity and poor mixing performance is common. [0004] At present,...

AI Technical Summary

Problems solved by technology

Because the use of domestic inorganic copper preparations is prone to phytotoxicity and poor mixing, the phenomenon of "copper fear" is common.

[0004] At present, the domestic production process of wettable powder, water dispersible granule, and water suspension concentrate of inorganic copper preparations is mostly one-step mixing and pulverization or multiple airflow pulverization after mixing evenly, that is, the active ingredients containing inorganic copper and surfactants, After the medium is mixed evenly, the finished product is obtained after airflow crushing or wet sand milling to reach a certain particle size. The disadvantage is that the production efficiency is low, it is difficult to obtain a finished product with a small particle size, and the particle size distribution of the obtained product is wide.

The particle size distribution of the product is uneven, resulting in a low suspension rate and easy aggregation and precipitation of the product, resulting in uneven drug use on the target, poor mixing of the drug solution and phytotoxicity

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