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Raw Materials and Processing Equipment of Spherical Graphite

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Spherical graphite This graphite product is made with high-quality natural flake graphite. It also contains advanced processing technology that allows for graphite products to be produced with different levels of fineness and elliptical shape. Spherical graphite has the properties of high electrical conductivity and high crystallinity.
Spherical graphite The processing principle is: First, you need to pulverize natural flake graphite powder to a size that can be used for particle size. Next, perform the de-angularization process, which will result in an ellipsoid, or spherical, shape. The fine powder that is removed during this process can be separated and the normal distribution for spherical Graphite can then be obtained.
Selection criteria spherical graphite, raw materials

The particle size of the spherical graphite material should be suitable. A higher cost is associated with a coarser particle size. Spherical graphite yields will suffer from a smaller particle size. An excess of auxiliary products will also increase the cost. Study have shown that it is easier to use spherical-graphite-making raw materials with a particle size between -100 and -100 mesh.

A very important aspect of spherical-graphite raw materials is their carbon content. The carbon content of spherical graphite raw materials is a key factor. The higher the carbon, the more expensive the raw materials. Additionally, the purification passes required to remove it will increase, increasing the equipment’s wear and tear. Also, the overall cost of the equipment will rise. After practice and accumulation it contains 95%96% and the total cost is lowest.

Selection criteria for spherical-graphite processing equipment

In the spherical processing, the airflow vortex-pulverizer is more used. This has both the effect of deangularization and performance of pulverization. It is important to consider the quality of the equipment when selecting grading equipment.

Graphite anode material for lithium-ion batteries must be at least 99.95%. Purification is an essential part of the production process. Chemical purification is the most common method of producing high-purity, spherical graphite. Since the chemical raw materials used in the production process are all strong acidic, the purification equipment must be both corrosion-resistant and acid-resistant. Chemical purification must be completed at a particular temperature. The equipment should also have a high resistance to heat.

After the chemical reactions, the impurities within the spherical graphite are dissolved into the reaction solution. Only then can the impurities be removed by washing. The most common washing equipment in this process is the filter press and centrifuge. The filter press offers many benefits, such as a higher recovery rate, less running materials, low labor intensity and safety. However, it has a limited washing effect and can leave behind dead corners. While the centrifuge offers more washing power and a more effective wash, there are some drawbacks. Combining them works well.

The spherical Graphite after being washed is dried to remove moisture. It is also controlled to below 0.5%. The most common problem with drying is secondary pollution. That is, the spherical carbonite becomes substandard after it is dried. This is mostly evident in the unqualified indicators and trace elements of carbon content. Drying equipment such as the drying kilns and dryers in microwave ovens is also used.

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