Six classifications and applications of graphite

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Six classifications of graphite and their applications
My country has a large and diverse graphite resource, but it is mostly small and medium sized. 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 the reorganization and improvement of the graphite use. My country has now developed high-purity products such as expanded graphite (also known as Isostatic graphite), colloidal graphite (also known as fluorinated) 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 and catalysts.
2. Isostatic Graphite
The graphite used to make isostatic graphite comes from high-purity material. It is known for its low thermal coefficient, high heat resistance, chemical resistance and thermal and electrical conductivity. In the last 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. This material is mainly used for the following purposes.
Heater for polysilicon Ingot Furnace
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 temperature and high power density. This puts higher demands on the new generation graphite material: high quality at low cost, high radiation damage tolerance and homogenization of the product, etc.
Nuclear fusion reactor.
Graphite’s special properties also play an important role in nuclear fusion. It can greatly reduce the metal particles in the material’s plasma, and therefore plays an important role in improving energy confinement. As nuclear fusion devices expand, graphite wall materials that have high mechanical and thermal strength are the most suitable for the first material to face the plasma. These materials also show a good discharge-pulse effect when used. Because graphite is low in atomic numbers and has low radiation losses, it is able to stabilize high-temperature plasma even when mixed with it.
(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 disadvantages. 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 primarily used in the areas listed below.

The environmental protection field.
The hydrophobicity and lipophilicity of expanded graphite allows it to selectively remove nonaqueous solutions in water. 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. It is possible to aggregate the graphite into blocks that float on water, recycle and reuse it without secondary pollution. In addition to selective absorption in the liquid state, expanded graphite can also have an inhibitory impact on air pollution. This includes the adsorption and removal of carbon dioxide.
Sealing Material
Graphite expanded can be transformed into flexible graphite, which is used for sealing materials.
4. Graphite fluoride
Graphite fluoride, a high-tech material with high-performance and high-efficiency, is one of the most active research areas in the world. It is used for functional materials due to its unique properties and excellent performance.

(1) It is used as a releaser.
Graphite-fluoride is a surface agent with low energy. It’s mainly applied as a release for metal molds like powder molding, plywood molding, and die casting.
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 temperatures, pressure, corrosive materials and heavy loads.
(3) Raw materials for batteries
It is difficult to use fluorine in the active material of batteries made from fluorine and lithium because fluorine gas can be poisonous. Fluorinated Graphite is used for its excellent electrochemical properties when mixed with organic electrolytes. This makes it a popular material in the integrated circuit memory of cameras, computers and watches.
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 consists of a hexagonal honeycomb-like lattice made up of hybrid sp2 orbitals and carbon atoms. This is a two-dimensional, one-atom thick material. This nanomaterial has the highest level of hardness and toughness ever found.
The special arrangement of atomic structures has made it widely used.
(1) The ultra thin graphene, with its tightly packed molecules, can’t let even the smallest of helium atoms pass through. Its strength is also super strong, and it is used in ultra light body armors, 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.
(3) Its thermal conduction is superior to all known substances. Due to the rapid movement and movement of its electrons, it can be applied in place of silicon as a component of future curved mobiles, photon sensors, and supercomputers.
Researchers discovered that bacteria cells could not grow on graphene but human cells were not affected. Take advantage of it; graphene is great for bandages, packaging food, etc.

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