Large grained fertilizer granulation equipment

Abstract

At present, fertilizers are granulated mostly through the following processes: granulating by a rotary drum, granulating through slurry spraying, granulating by a high tower, granulating through ammonification, granulating through extrusion and the like; however, large grained fertilizers with the grain diameters of more than 2 cm are very difficult to manufacture through the processes. The invention provides large grained fertilizer granulation equipment. Raw materials are adopted to be fused into liquid at a high temperature, liquid fertilizers fused at the high temperature, which are loaded in a bunker trolley, are filled in dies on a machine in sequence so as to conduct the cooling formation, and the dies are opened by a die closing frame system to eject the formed fertilizer particles to be conveyed outside the machine. Spherical, square and cylindrical large grained fertilizers with the grain sizes of more than 2 cm can be manufactured by the large grained fertilizer granulation equipment. The fertilizers manufactured by the large grained fertilizer granulation equipment has the advantages that the rate of finished products is high, the drying operation is omitted, the appearance is attractive, the compression strength is high, the resistant transportation capability is achieved, and no soil hardening phenomenon exists.

Description

[0001] technical field [0002] The invention relates to a novel fertilizer granulation equipment, in particular to a large-grain fertilizer granulation equipment. Background technique [0003] The traditional fertilizer granulation process is mostly in the form of drum granulation, spray granulation, high tower granulation, ammoniated granulation, extrusion granulation, etc. The fertilizers produced by these methods are mostly small granular fertilizers within 5 mm . Small granule fertilizers have the following disadvantages: First, small granule fertilizers are small and melt water quickly, causing a large amount of fertilizer to be lost and volatilized with rainwater, and less than 40% of them are actually absorbed by crops; second, small granule fertilizers are still Because of the fast loss and short residence time in the soil, crops in one season must be fertilized many times, which is labor-intensive; third, because of the small particle size of small particle fertil...

AI Technical Summary

Problems solved by technology

Small granule fertilizers have the following disadvantages: First, small granule fertilizers are small and melt water quickly, causing a large amount of fertilizer to be lost and volatilized with rainwater, and less than 40% of them are actually absorbed by crops; second, small granule fertilizers are still Because of the fast loss and short residence time in the soil, crops in one season must be fertilized many times, which is labor-intensive; third, because of the small particle size of small particle fertilizers, it is difficult for farmers in mountainous areas or areas where fertilization is done by hand to accurately grasp the amount of fertilizer every time. Insufficient or excessive fertilization will result in crop yield reduction and waste of fertilizers in light cases, and root burning and seedling failure in severe cases.

4. Due to the small size of the particles and the small space between the particles, the small particle fertilizer is easy to harden in the packaging, which makes it inconvenient for farmers to use

Fifth, small particle fertilizers are prone to stripes during mechanical fertilization, and it is difficult to accurately determine the quantitative fertilization

6. Even if the traditional granulation process can produce large-grained fertilizers of more than 2 cm, it is difficult to produce fertilizers in actual production due to factors such as irregular fertilizer granules, low strength, easy crushing, low yield, low output, and high energy consumption. use

7. Small granular fertilizers are not conducive to making coated controlled-release fertilizers

The increased benefit is far less than the increased cost, so it has been difficult to promote in the market

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