Granulation device

Abstract

The invention discloses a granulation device which comprises a fusion mixing groove, a distribution groove, a conveying belt and a cooling spraying device. A raw material pump and a filter are arranged between the fusion mixing groove and the distribution groove. The raw material pump is connected to the outlet end of the fusion mixing groove, fused raw materials are pumped by the raw material pump to the filter and filtered by the filtered and enter the distribution device from a feed inlet, the distribution device divides the fused materials fed from the feed inlet into drops and enables the drops to be dropwise distributed on the conveying belt, and the conveying belt comprises a conveying belt body and a super-hydrophobic oleophobic surface layer arranged on the surface of the conveying belt body. Super-hydrophobic oleophobic treatment is carried out on the surface of the conveying belt, the fused material drops can be automatically shrunk into spheres, the chain type stainless steel conveying belt is used for replacing a steel belt, and therefore granules in an approximate sphere shape can be produced; in addition, due to the fact that the chain type conveying belt replaces the steel belt, basically no stress is produced during operation, the service life is greatly prolonged, and the maintenance cost is low.

Description

technical field [0001] The invention belongs to the technical field of material granulation, and relates to a granulation device. Background technique [0002] In many industries, there is a demand for material granulation, and there are various granulation techniques, such as spraying method, agglomeration method, steel belt condensation method, etc. Among them, the steel belt condensation method has the advantages of high material uniformity, fast cooling speed, small equipment footprint and low height, and is widely used in sulfur, paraffin, chemical fertilizer and other industries. [0003] At present, the material granulation of the steel belt condensation method is mainly to melt the material, drop it from the distributor, and fall on the steel belt for cooling to condense into granules. The back of the steel belt is sprayed with water to accelerate cooling. The material on the steel belt is scraped off. The particles produced by this process are in the shape of a sp...

AI Technical Summary

Problems solved by technology

The core part of the equipment is the steel belt, which needs to reciprocate and work under strong stress, and has extremely high requirements for its toughness, elasticity, flatness and other indicators. It is reported that the steel belt used in this process is currently For import, the cost is high

Moreover, after several years of use, the stress fatigue of the steel strip will cause deformation and relaxation, and it will no longer operate normally. It needs to be replaced as a whole, and the maintenance cost is relatively high.

[0004] Some enterprises and units have tried to apply steel belt granulation in fertilizer production, but they all ended in failure.

The main problems are as follows. One is that the shape of the particles is not ideal and the fluidity is poor, so it is not suitable for mechanical fertilization; the other is that the cost of replacing the steel belt is too high, which increases the overall production cost

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