What are the new uses of graphite?

Graphite overview

Graphite is an allotrope of carbon. It is a gray-black opaque solid. It has stable chemical properties, corrosion resistance, and is not easy to react with acids and alkalis. It burns in oxygen to generate carbon dioxide. It can be strengthened by concentrated nitric acid, potassium permanganate, etc. The oxidant oxidizes and can be used as an anti-wear agent and lubricant. High-purity graphite is used as a neutron moderator in atomic reactors. It can also be used to make crucibles, electrodes, brushes, dry batteries, graphite fibers, heat exchangers, coolers, electric arc furnaces, arc lamps, pencil leads, etc.

Graphite applications

1. Used as a refractory material: Graphite and its products have the characteristics of high temperature resistance and high strength, and are mainly used for the manufacture of graphite crucibles in the metallurgical industry. In steelmaking, graphite is often used as a protective agent for steel ingots and steel ingots, as the lining of metallurgical furnaces.

2. As a conductive material: used in the electrical industry to manufacture electrodes, brushes, carbon rods, carbon tubes, positive electrodes of mercury positive current devices, graphite washers, telephone parts, coatings for television picture tubes, etc.

3. As a wear-resistant lubricating material: Graphite is often used as a lubricant in the machinery industry. Lubricating oil is often not used under high-speed, high-temperature, and high-pressure conditions, while graphite wear-resistant materials can work at high speed and slide at a temperature of (1) 200~2000 ℃ without lubricating oil. Many equipment that transports corrosive media widely use graphite materials to make piston cups, seals and bearings. They do not need to add lubricating oil during operation. Graphite emulsion is also a good lubricant for many metal processing (wire drawing, pipe drawing).

4. Graphite has good chemical stability. Specially processed graphite has the characteristics of corrosion resistance, good thermal conductivity, and low permeability. It is widely used in the production of heat exchangers, reaction tanks, condensers, combustion towers, absorption towers, coolers, heaters and filters.

Pump equipment. It is widely used in petrochemical industry, hydrometallurgy, acid-base production, synthetic fiber, papermaking and other industrial sectors, which can save a lot of metal materials.

5. Used for casting, sand hunting, pressing molds and high temperature metallurgical materials: Because graphite has a small thermal expansion coefficient, it can withstand rapid changes in cold and heat, and can be used as a mold for glassware. After using graphite, ferrous metals can obtain castings with accurate dimensions and smooth surfaces. High, can be used without processing or a small amount of processing, thereby saving a lot of metal. The production of cemented carbide and other powder metallurgy processes usually use graphite materials to make porcelain boats for pressing and sintering. The single crystal silicon crystal growth crucible, regional refining vessel, supporting fixture, induction heater, etc. are all made of high-purity graphite. In addition, graphite can also be used for vacuum smelting graphite insulation boards and substrates,

6. Used in the nuclear energy industry and national defense industry: Graphite has a good neutron moderator for nuclear reactors. Uranium-graphite reactor is currently the most widely used atomic reactor. The decelerating material in the nuclear reactor used as the power should have a high melting point, good stability and corrosion resistance. Graphite can fully meet the above requirements. The graphite used in nuclear reactors has a high purity, and the impurity content should not exceed tens of PPM, especially the boron content should be less than 0.5 PPM. In the defense industry, graphite is also used to manufacture solid fuel rocket nozzles, missile nose cones, aerospace equipment parts, thermal insulation materials and radiation protection materials.

7. Graphite can also prevent boiler fouling. Tests by relevant units have shown that adding a certain amount of graphite powder (approximately 4 to 5 grams per ton of water) can prevent scaling on the boiler surface. In addition, metal chimneys, graphite coatings on roofs, bridges and pipes can prevent corrosion and rust.

8. Graphite can be used as pencil lead, pigment and polishing agent. After special processing, graphite can be made into various special materials for use in related industrial sectors.

9. Electrode

New uses of graphite

With the continuous development of science and technology, people have also developed many new uses of graphite.

Flexible graphite products Flexible graphite, also known as expanded graphite, is a new type of graphite product developed in recent years.

The United States has successfully developed flexible graphite sealing materials to solve the leakage problem of atomic energy valves. Subsequently, Germany, Japan, and France also began to develop and produce. In addition to the characteristics of natural graphite, this product also has special flexibility and elasticity.

Therefore, it is an ideal sealing material, widely used in petrochemical, atomic energy and other industrial fields, and the international market demand is increasing year by year. In addition, graphite is also a polishing agent and rust inhibitor for light industrial glass and papermaking, and is an indispensable raw material for the manufacture of pencils, ink, black paint, ink, synthetic diamonds and diamonds. Energy-saving and environmentally friendly materials, the United States has used it as a car battery. With the development of modern science and technology and industry, the application field of graphite is still expanding. It has become an important raw material for new composite materials and a material in the high-tech field, occupying an important position in the national economy.

Graphite price

The price of graphite will vary with the production cost, transportation cost, international situation, exchange rate and graphite price.

The supply and demand situation varies randomly. Tanki New Materials Co., Ltd. aims to help various 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 graphite prices,

Please feel free to send an inquiry to get the latest price of graphite.

Graphite supplier

As a global graphite supplier, Tanki New Materials Co., Ltd. has extensive experience in the performance, application and cost-effective manufacturing of advanced engineering materials. The company has successfully developed a series of powder materials (titanium nitride, silicon nitride, titanium nitride, etc.) high-purity targets, functional ceramics and structural devices, and provides OEM services.