Six classifications and applications of graphite

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Six classifications of graphite and their applications
The graphite reserves in my country are vast and well distributed. However, many are small- and medium sized minerals. Private small graphite miners have operated in my country, but their added value is low. After many years of hard work, my country has invested in a large amount of money and technical and scientific personnel. The graphite reserves of my country have been used more efficiently after reorganizing mineral enterprises and improving graphite utilization. My country has now developed high-purity products such as expanded graphite (also known as Isostatic Graphite), colloidal graphite (also known as fluorinated Graphite), graphene (also known by the name of graphene), and high-performance graphite.
1. High purity graphite
High-purity Graphite (carbon contents >99.99%), is used for pyrotechnics in military industry, advanced refractory material in metallurgical industries, Chemical fertilizer additives, catalysts etc.
2. Isostatic Graphite
The graphite used to make isostatic graphite comes from high-purity material. It has a low coefficient of thermal expansion, good heat resistance and chemical resistance. In the past fifty years, isostatic graphite has become a world-first product. It has not only achieved great success in civil applications, but also holds a prominent position in cutting-edge national defense. This is a brand new material, which is also eye-catching. The following are the main aspects.
(1) Heater to heat polysilicon ingots
As a result of the global warming, the awareness among humans to protect the Earth has increased. More and more people now prefer natural energy that does not emit carbon dioxide. In this trend, solar cell technology has become the “darling of the new age”. The ingot heater that is used during the manufacturing process must be made out of graphite.
Nuclear fission (high temperature gas-cooled) reactor
In order to meet the requirements of graphite as a moderator for high-temperature reactors that use gas cooling, it must resist radiation creep. This led to a modular design for a high-temperature reactor. Modern ultra-high temperature reactors are characterized by high power density at high temperatures. This puts higher demands on the new generation graphite material: high quality, low price, high radiation damage tolerance, homogenization of products, etc.
Nuclear fusion reactor.
Graphite’s special properties also play an important role in nuclear fusion. It is capable of reducing the metal impurities to a great extent in the material’s plasma. As a result, it can play a major role in improving energy confinement. As nuclear fusion devices expand, graphite wall materials with high mechanical and thermal strength are used as the primary material in the first walls facing the plasma. These materials also have a positive discharge pulse during application. Because graphite is low in atomic numbers and has low radiation losses, even when mixed with plasma, it keeps high-temperature plasmas stable.
(4) Electric discharge machining electrode.
In the electrodes for electric discharge machining, graphite electrodes offer many advantages. Although graphite is a good material, it has some drawbacks. For example, dust and wear can occur during cutting.
3. Expandable graphite
Also known as acidified or flake graphite. It is made from high-quality graphite. Expanded Graphite offers many advantages, such as high-temperature resistance, high-pressure resistance, good seal performance, and corrosion resistance for various media. It is a type of advanced seal material. It is used in a variety of areas.

Environmental protection is one of the most important fields.
Expanded graphite has a lipophilicity that makes it hydrophobic and can remove non-aqueous water solutions. This property is commonly used to remove slicks of oil from the sea surface. A large amount of oil can be absorbed by this product due to its molecular composition. After oil, the graphite can be aggregated to form blocks that float in water and be recycled without secondary pollution. Expanded graphite, in addition to its selective adsorption, has an inhibitory impact on air pollution. This includes the adsorption and removal of carbon dioxide.
Sealing Material
It is also known as “the sealing king” because it can be transformed into flexible graphite. This graphite has low thermal expansion coefficients, and doesn’t crack or soften at low temperatures.
4. Graphite fluoride
Graphite fluoride, a new material with high-tech performance and efficiency, is a hotspot for research in the world. It is widely used for functional materials due to its unique properties and excellent performance.

(1) It is used as a releaser.
Graphite-fluoride is characterized by its low surface energy. It is mainly employed as a release agent in metal molds for powder moldings, die castings and plywood moldings.
(2) Solid Lubricants
Fluorinated Graphite, with its low interlayer energy and low surface energy as well as good chemical and thermal properties, has excellent lubricating characteristics and is ideal for harsh conditions like high temperature, pressure, corrosive materials and high loads, as in high temperature Lubricants used for aircraft engines, car bearings, and other high-temperature applications.
Battery Raw Materials
It is difficult to use fluorine in the active material of batteries made from fluorine and lithium because fluorine gas can be poisonous. However, because fluorinated Graphite is a material with excellent electrochemical properties, it’s widely used for integrated circuit memory in computers, watches, and cameras.
5. Colloidal graphite
One of the main features of colloidal graphite is its lubricity. The colloidal film of graphite has an excellent thermal insulation in the vertical direction. It is used widely in turbine propellers and hot steam cylinders. It is used to reduce static electricity in the electronics industry.
6. Graphene
Graphene is a hexagonal honeycomb-like lattice made of carbon atoms, and sp2 hybrid orbitals. This is a two-dimensional, one-atom thick material. It is the most durable and hard nanomaterial ever found.
The special arrangement of its atomic structure has made it widely used.
(1) According to ultra-thin Graphene (single layer graphene almost transparent; its molecules are tightly packed, so that even the smallest of helium atoms can’t pass through), the strength is super strong, and it can be used in ultra-light armors, ultra thin and ultra light aircrafts, etc. .
(2) Its conductive atoms have a much higher speed than electrons that move in metal conductors. It can be made into graphene conductor agent.
It is a material that has a thermal conductivity superior to all other substances. Due to the rapid movement and conductive electrons, it can be applied in place of silicon as curved mobile phone, photon sensors, and supercomputers.
Researchers have found that bacteria cannot grow on graphene but human cells do not get damaged. Use graphene in bandages, food packaging and more.

Tech Co., Ltd. is a professional manufacturer of graphite with more than 12 years’ experience in research and development for chemical products. You can contact us to send an inquiry if you need high-quality graphite.