Overview of high purity graphite
High purity graphite refers to graphite powder of high-purity graphite with a carbon content of more than 99.9%.This high-purity graphite has good electrical conductivity,lubricity,high temperature resistance,wear resistance,etc.
High-purity graphite,also known as flake-like high thermal conductivity charcoal powder,is an ideal inorganic non-metallic material with high strength,good thermal shock resistance,high temperature resistance,oxidation resistance, low electrical resistance,and corrosion resistance.Easy to precision processing.Used to manufacture heating elements,structural molds,crucible plates for melting high-purity metals,single crystal furnace heaters,electric spark graphite,sintering molds,tube anodes,metal coatings,graphite crucibles for semiconductor processes,transmitter tube graphite anodes,Thyristor,mercury arc,grid,etc.
High-purity graphite has complete scaly crystals,thin,good toughness,excellent physical and chemical properties,good thermal conductivity,heat resistance,self-lubricating,electrical conductivity,thermal shock resistance,corrosion resistance,etc.
Special properties of graphite
1.High temperature resistance:The melting point of graphite is 3850±50℃ and the boiling point is 4250℃.Even after ultra-high temperature arc combustion,the weight loss is very small,and the thermal expansion coefficient is negligible.As the temperature increases,the strength of graphite increases.At 2000°C,the power of graphite doubles.
2.Electrical conductivity,thermal conductivity:the electrical conductivity of graphite is 100 times higher than that of general non-metallic ore.The thermal conductivity exceeds the thermal conductivity of steel,iron,lead and other metal materials.The thermal conductivity decreases with temperature,and even at very high temperatures,graphite becomes adiabatic.Graphite is conductive because each carbon atom in graphite only forms three covalent bonds with other carbons,and each carbon retains a free electron to carry charge.
3.Lubricity:The lubrication performance of graphite depends on the size of the graphite flakes.The larger the flakes,the smaller the friction coefficient and the better the lubrication performance.
4.Chemical stability:Graphite at room temperature has excellent chemical durability,acid resistance,alkali resistance and organic solvent corrosion resistance.
5.Plasticity:Graphite has good toughness and can be ground into fragile flakes.
6.Thermal shock resistance:When graphite is used at room temperature,it can withstand violent temperature changes without being damaged.The temperature changes suddenly,and the volume of graphite changes very little,and no cracks occur.
High-purity graphite has the characteristics of high strength,high density, high purity,high chemical stability,compact and uniform structure, high temperature resistance,good electrical conductivity,good wear resistance,good self-lubrication and easy processing.It is widely used in metallurgy,chemical industry,aerospace, electronics,machinery,nuclear energy and other industrial fields.Especially large-size,high-quality,high-purity graphite as an alternative material has broad application space and broad application prospects in the high-tech field.
There are two purification methods for high-purity graphite.One is wet purification, including flotation,acid-base, and hydrofluoric acid.The second is fire purification,including chlorination roasting method and high temperature method.
High purity graphite application
High-purity stone ink is widely used in advanced refractory materials and coatings in the metallurgical industry,fireproof material stabilizers in the military industry,pencil leads in the light industry,carbon brushes in the power industry,electrodes in the battery industry,and catalyst additives in the fertilizer industry.in.High-purity graphite can be further processed to produce high-tech products such as graphite milk,graphite sealing materials and composite materials,graphite products,and graphite wear-resistant additives.Has become an important industry for non-metallic mineral raw materials.
Application field
(1) Lithium battery industry
Natural graphite and artificial graphite are the main sources of graphite anode materials.Artificial graphite usually needs to go through calcination,carbonization,high temperature graphitization,coating and other processes;natural graphite is mostly purified by alkali metal acid dressing,ultra-high temperature purification,surface treatment and other processes,whether natural graphite or artificial graphite must be graphite Chemical or high-temperature cleaning can become the cathode material for the production of lithium batteries.At present,high-temperature graphite purification technology and high-temperature graphitization technology have become key technologies in the research field of graphite anode materials.
(2) Graphene industry Compared with various preparation methods of graphene,the graphite oxide reduction method will become the most promising method for synthesizing graphene and its materials.The main raw material of the graphite oxide reduction method is high-purity natural flake graphite.
(3) Isotropic nuclear graphite industry
Since high-purity isotropic natural microcrystalline ink is an ideal raw material for atomic graphite,it is particularly important to expand the source of raw materials for high-purity isotropic natural microcrystalline ink.
(4) Man-made diamond industry
Natural flake graphite powder is the main raw material for synthetic diamond.Scientists have proved that the purity of graphite powder and the degree of graphitization of graphite powder have an important impact on product quality.Choosing high-purity graphite raw materials and choosing the appropriate degree of graphitization will be the only way to improve the quality of synthetic diamond products.
(5) Military graphite bomb industry
High-purity graphite is the raw material for the production of graphite bombs.
(6) Flexible graphite industry
In summary,flexible graphite has unique use value and broad development prospects.However,in the production process,there are requirements for purity.The purification of chemical acids often destroys or affects the excellent material properties.High-temperature physical refining has obvious advantages.
(7) Other industries
Natural high-purity graphite powder has the advantages of high temperature resistance,good electrical and thermal conductivity,lubricity,chemical stability,and excellent wear resistance.It can be used as a raw material for the synthesis of crystalline silicon carbide and boron carbide,hidden in aircraft coatings and In the chemical industry,electronics,machinery and other industrial fields,it has a wide range of applications.
In summary,the high-purity graphite powder market has broad prospects.If the 20th century is the age of silicon,carbon will become one of the fastest growing and most versatile materials in the 21st century.Lithium battery anode materials,graphene materials,isotropic nuclear graphite,synthetic diamond,flexible graphite and other high-grade carbons are playing an increasingly important role in people's lives,production and military affairs.
High purity graphite price
The price of high-purity graphite will vary randomly with the production cost, transportation cost, international situation, exchange rate, and market supply and demand of high-purity graphite. Tanki New Materials Co.,Ltd. aims to help all industries and chemical wholesalers find high-quality, low-cost nanomaterials and chemicals by providing a full set of customized services. If you are looking for high purity graphite, please feel free to send an email to get the latest price of high purity graphite.
Supplier of high purity graphite
As a global supplier of high purity graphite,Tanki New Materials Co.,Ltd has extensive experience in the performance,application and cost-effective manufacturing of advanced and engineered materials.The company has successfully developed a series of powder materials (including oxides,carbides,nitrides,single metals,etc.),high-purity targets,functional ceramics and structural devices,and provides OEM services.
Tanki New Materials Co.Ltd Aims to help All industries and Chemical Wholesalers to find high quality, cheap price nano materials and chemicals by providing turn-key customize manufacturing services.
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Tanki New
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nitrides, single metal, etc.), high-purity targets, functional ceramics, and structural devices. OEM service is available.
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