Preparation process of high-concentration compound fertilizer

Abstract

The invention provides a preparation process of a high-concentration compound fertilizer. The preparation process is completed by a bottom plate, a connecting rod, an angle cylinder, a vibrating typedrying unit, a working air pump, an annular cavity, a connecting cylinder, a rolling type drying unit, an angle air cylinder and a sealing cover in a matched mode. According to the preparation process, the problems that hot air drying can only be used for drying the surface layer of the compound fertilizer, a traditional drying roller is generally placed in an inclined mode, the placed compound fertilizer is generally conveyed in the roller at a relatively high speed, so that the drying time of the compound fertilizer in the roller is relatively short, due to the fact that the conveying time of the compound fertilizer in the roller is relatively short, even if the roller rolls continuously, part of the compound fertilizer on the inner layer is difficult to turn out, and as a result, the drying degrees of all layers of the compound fertilizer are different, and the compound fertilizer is difficult to be comprehensively dried can be solved.

Description

technical field [0001] The invention relates to the technical field of compound fertilizer preparation, in particular to a preparation process of high-concentration compound fertilizer. Background technique [0002] High-concentration compound fertilizer uses urea, ammonium phosphate, and potassium chloride as the main raw materials, and the effective nutrient content of nitrogen, phosphorus, and potassium is ≥%. It can be used as base fertilizer and topdressing fertilizer. The application effect of high-concentration compound fertilizer is obvious, and it is convenient for transportation. In recent years, due to the adjustment of industrial structure, the proportion of high-efficiency crops has been continuously expanded, and farmers' demand for high-concentration compound fertilizers has increased. Therefore, high-concentration compound fertilizers have broad market prospects. [0003] In the process of compound fertilizer preparation, it is necessary to carry out rolling...

AI Technical Summary

Problems solved by technology

[0004] Hot air drying is usually only able to dry the surface layer of compound fertilizer, and the traditional drying drum is usually placed at an angle, and the compound fertilizer put in is usually transported in the drum at a relatively fast speed, resulting in the loss of compound fertilizer in the drum. The drying time is short, because the transportation time of the compound fertilizer in the drum is short, even if the drum keeps rolling, part of the compound fertilizer in the inner layer is difficult to be turned out, resulting in different drying degrees of each layer of the compound fertilizer, Difficult to fully dry

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