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Graphite powder is an important raw material for industrial production

Issuing time:2018-12-05 Popularity:1841

Shandong Shuangyu Carbon Co., Ltd. Specializing in the production of expanded graphite, high-purity graphite, flake graphite, can be customized according to the specific requirements of users, packaging is packaged in the form of 25KG small bag sets, contact telephone: 18669737779 with WeChat, look forward to working with you. Scan the QR code below to add exclusive customer service, micro signal angdun

Graphite powder is an important raw material for industrial production. There are many types of graphite powder, which can meet the needs of various fields of industrial production. There is an important relationship between the use and performance of graphite powder. The performance of graphite powder determines the use and application of graphite powder. Graphite powder has good lubricity, high temperature resistance, electrical conductivity, corrosion resistance, etc. Therefore, graphite powder can be used in various fields of industry. Graphite powder is soft, black and gray; it has a greasy feel and can contaminate paper. The hardness is 1~2, and the hardness can be increased to 3~5 along with the increase of impurities in the vertical direction. The specific gravity is 1.9~2.3. Under the condition of insulating oxygen, its melting point is above 3000 °C, which is one of the most temperature-resistant minerals.

Graphite powder uses natural flake graphite as raw material for production. It is processed into various specifications of graphite powder by mechanical pulverization. Graphite powder has many specifications. Graphite powder specification is particle size, graphite powder particle size affects graphite powder lubrication performance, graphite powder. The smaller the particle size, the better the lubricating property of graphite powder. The application of graphite powder in the field of lubrication is ultra-fine graphite powder and nano-graphite powder with small particle size. The carbon content is also an important factor affecting the electrical conductivity of graphite powder. The higher the carbon content of the graphite powder, the better the conductivity of the graphite powder. Such graphite powder can be used in the field of conductive material production.
Graphite has the following special properties due to its special structure:
1) High temperature resistance type: The melting point of graphite is 3850±50°C, and the boiling point is 4250°C. Even if it is burned by ultra-high temperature arc, the weight loss is small and the coefficient of thermal expansion is small. The strength of graphite is enhanced with increasing temperature, and the strength of graphite is doubled at 2000 °C.
2) Conductivity and thermal conductivity: The conductivity of graphite is one hundred times higher than that of ordinary non-metallic minerals. Thermal conductivity exceeds metal materials such as steel, iron, and lead. The thermal conductivity decreases with increasing temperature, and even at very high temperatures, graphite becomes a thermal insulator.
3) Lubricity: The lubricating property of graphite depends on the size of the graphite scale. The larger the scale, the smaller the friction coefficient and the better the lubrication performance.
4) Chemical stability: Graphite has good chemical stability at normal temperature, and is resistant to acid, alkali and organic solvents.
5) Plasticity: Graphite has good toughness and can be made into thin sheets.
6) Thermal shock resistance: When graphite is used at normal temperature, it can withstand severe changes in temperature without damage. When the temperature is abrupt, the volume of graphite does not change much and cracks are not generated.
Different production processes of graphite powder produce different graphite powders. The particle size and carbon content of these graphite powders determine the use and performance of graphite powder. Graphite powder can be based on its properties, particle size, carbon content, etc. To classify, various graphite powders correspond to their respective graphite powder applications. Graphite powder plays an important role in industrial lubrication, electrical conductivity, refractory materials and other production fields.
Graphite has good chemical stability. Specially processed graphite, which has the characteristics of corrosion resistance, good thermal conductivity and low permeability, is widely used in the manufacture of heat exchangers, reaction tanks, condensers, combustion towers, absorption towers, coolers, heaters, filters. , pump equipment. Widely used in petrochemical, hydrometallurgy, acid and alkali production, synthetic fiber, paper and other industrial sectors, can save a lot of metal materials. For casting, sanding, compression molding and pyrometallurgical materials: Because graphite has a small thermal expansion coefficient and can withstand rapid cooling and rapid changes, it can be used as a mold for glassware. After using graphite, ferrous metals can be used to obtain accurate casting dimensions and high surface finish yield. It can be used without processing or a little processing, thus saving a lot of metal. Production of cemented metallurgy and other powder metallurgy processes, usually made of graphite materials for stamping and sintering of porcelain boats. Crystal growth of single crystal silicon, regional refining vessels, bracket fixtures, induction heaters, etc. are all processed from high purity graphite. In addition, graphite can also be used as a vacuum smelting graphite heat insulation board and base, high temperature resistance furnace tube, rod, plate, grid and other components. Graphite also prevents boiler fouling. The relevant unit tests have shown that adding a certain amount of graphite powder (about 4 to 5 grams per ton of water) in water can prevent scaling on the boiler surface. In addition, graphite can be coated on metal chimneys, roofs, bridges and pipes to prevent corrosion and rust. Graphite can be used as pencil lead, pigment, and polishing agent. After special processing of graphite, various special materials can be produced for the relevant industrial sectors.
In addition, graphite is a polishing agent and rust inhibitor for glass and paper in the light industry. It is an indispensable raw material for the manufacture of pencils, inks, black lacquers, inks and synthetic diamonds and diamonds. It is a good energy-saving and environmentally friendly material that the United States has used as a car battery. With the development of modern science and technology and industry, the application field of graphite is still expanding, and it has become an important raw material for new composite materials in the high-tech field, and plays an important role in the national economy.

Shandong Shuangyu Carbon Co., Ltd. specializes in producing expanded graphite, high-purity graphite and flake graphite. It can be customized according to the specific requirements of users. The packaging is packaged in the form of 25KG small bag sets. Contact number: 18669737779 and WeChat, look forward to working with you. . Scan the QR code below to add exclusive customer service, micro signal angdun


Keywords in this article:Graphite, flake graphite
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