Air-flow vortex balling machine for producing spherical graphite

Abstract

The invention discloses an air-flow vortex balling machine for producing spherical graphite, which consists of a machine body, a balling drive device and an internal classification machine drive device, wherein an internal classification machine, a powder balling module and a cooling system are arranged in the machine body. In the invention, an internal balling module and a classification module are rationally arranged, and thus, the air-flow vortex balling machine for producing the spherical graphite is provided. The air-flow vortex balling machine can ensure that the graphite powder undergoes the physical processes of thinning, shearing, collision, friction, coiling, uniting and densification in an air-flow vortex balling room or can realize the combination of a physical balling processand a mechanical powder thinning process to prepare the spherical product. The indexes, such as sphericity, grain fineness distribution, tap density, apparent density, actual density and special surface area, of the spherical graphite powder can be controlled in the range of pre-determined values; the quality is stable; the yield can be improved by over three times; and over 50 percent of energy consumption can be reduced.

Description

technical field [0001] The invention relates to an airflow vortex spheroidizer, in particular to an airflow vortex spheroidizer specially used for producing spherical graphite. Background technique [0002] At present, there are many crushing equipment used to produce ordinary graphite powder, and its varieties are relatively messy. However, equipment dedicated to the production of spherical graphite powder has not yet come out. In recent years, for the production of spherical graphite powder, individual production enterprises have modified the equipment for producing ordinary graphite powder, but the production effect is not good, and the products produced are far from meeting the requirements of spherical graphite, especially Indicators such as sphericity, particle size distribution range, tap density, bulk density, true density, and specific surface area cannot meet the technical requirements required by users, which restricts the application of spherical graphite in my co...

AI Technical Summary

Problems solved by technology

The mechanically pulverized graphite powder has irregular particles, flakes, triangles, and spherical shapes mixed together; in terms of particle size distribution, the particle size distribution of the product is different due to the technical factors of the equipment. It is also very difficult to sieve, for this reason, the obtained product can only be used as a general material

From the specific defects that the existing equipment cannot produce spherical graphite, the technical problems are reflected in the following aspects: First, the design of the crushing chamber or spheroidizing chamber of the equipment is unreasonable, and the inlet and outlet of the general equipment The openings are all set on the crushing chamber. When the material enters, it is directly crushed in the crushing chamber and discharged from the discharge port in a short time. It only forms a mechanical crushing process and lacks the process of physical collision and agglomeration; The design of the cutting tool is unreasonable. The general equipment adopts the working principle of the "crusher" grinding disc. The cutting tool is set on the upper plane of the grinding disc. When the material enters from the crushing chamber, it directly falls into the upper plane of the grinding disc. When the material is crushed or moved above the grinding disc, the knives on the grinding disc can only perform partial shearing; the third is that the general equipment adopts a higher rotor speed, and it is generally believed that the higher the speed, the better the crushing effect. it's not

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