Flake graphite is widely used in advanced refractories and coatings in the metallurgical industry

Overview of natural flake graphite C powder

Flake graphite is natural crystalline graphite, which is shaped like fish phosphorus, belongs to the hexagonal crystal system, and has a layered structure. It has good high temperature resistance, electrical conductivity, thermal conductivity, lubrication, plasticity, acid and alkali resistance. Flake graphite has complete crystals, thin flakes, good toughness, excellent physical and chemical properties, and good thermal conductivity, electrical conductivity, thermal shock resistance, corrosion resistance, etc.

Natural flake graphite is the raw material for processing graphite powder. Natural flake graphite has a flake-like and laminar structure. The natural flake graphite is crushed and processed into powder, which is natural flake graphite powder. There are many uses for natural flake graphite powder. Flake graphite powder is in powder form, its lubricating performance is better than natural flake graphite, and its application range is wider than that of natural flake graphite.

Application of natural flake graphite C powder

Natural flake graphite powder has a wide range of applications. Natural flake graphite powder has good lubricating performance, high temperature resistance, corrosion resistance, etc. It is a natural lubricating material and can be processed into solid graphite lubricants such as lock core graphite lubricants. Flake graphite powder can also be processed into refractory products such as refractory bricks, magnesia carbon bricks, graphite crucibles, and natural flake graphite can be processed into natural flake graphite powder as well as raw materials for the production of other graphite products, such as expandable graphite and expanded graphite. Graphite, graphite paper, etc.

The processing and application of natural flake graphite has expanded the scope of use of natural flake graphite powder. The use of natural graphite powder plays an important role in sealing, temperature resistance, corrosion resistance, conductivity, heat preservation, compression resistance, wear resistance, and soothing reactions. Role, the use of natural flake graphite powder plays its different roles in different fields of industry.

Refractory

Flake graphite is widely used in advanced refractories and coatings in the metallurgical industry. Such as magnesia carbon bricks, crucibles, etc. Stabilizers for pyrotechnic materials in the military industry, desulfurization accelerators for the smelting industry, pencil leads for the light industry, carbon brushes for the electrical industry, electrodes for the battery industry, catalysts for the fertilizer industry, etc. After intensive processing of flake graphite, graphite emulsion can be produced, which can be used in lubricants, mold release agents, wire drawing agents, conductive coatings, etc. It can also produce expanded graphite, which is used as raw material for flexible graphite products, such as flexible graphite seals and flexible graphite composite products.

coating

As a functional filler of coatings, flake graphite is mainly used for anti-corrosion coatings, fire-resistant coatings and conductive coatings.

As an anti-corrosion material, it is made of carbon black, talcum powder and oil, etc., and has good resistance to chemicals and solvents. If chemical pigments such as zinc yellow are added to the formulation, the anti-rust effect will be better. .

Expandable graphite is used as fireproof filler, which is a kind of graphite interlaminar compound obtained by chemical or electrochemical treatment with natural graphite flakes as raw material. Expandable graphite expands rapidly (up to 300 times) in volume under heating, suffocating the flame, and at the same time, it generates expansions to isolate the flame, delay or interrupt the spread of the flame, and it is incombustible, flexible, and has high surface energy. , The strength of the carbonized layer is good. However, the volume and dosage of the swelling body should be selected appropriately. Tests show that 150um particles, 30% expansion ratio, and 5% dosage are the most suitable.

Flake graphite can be directly used as a carbon-based conductive filler, or it can be made into a composite conductive filler for conductive coatings. However, due to the large amount of graphite flakes added, the performance of the coating will become brittle and its application will be limited. Therefore, measures are taken to further improve the conductivity of graphite and effectively reduce the amount of graphite flakes added. The domestic Tianhua Chemical Machinery Research Institute has developed a high-temperature corrosion-resistant resin as the base material, and large flake solid graphite flakes with strong electrostatic conductivity as the main aggregate, with high body strength and good wear resistance.

The short-cut fiber material with good resistance to deformation and cracking is a solvent-free thick film conductive coating with functional fillers. The coating has the characteristics of anti-corrosive medium penetration, low curing residual stress, good resistance to matrix deformation and cracking, stable construction performance, and long-term static electricity conduction. It can be used for electrostatic conductive coating on the inner wall of crude oil storage tank. According to reports, the electroless plating technology is used to coat graphite powder with metal, such as copper, nickel, silver, etc., to prepare composite conductive fillers, which are used in conductive coatings in an amount of 30%, which not only has good conductivity, but also has further anti-corrosion properties. improve.

Natural flake graphite price

Affected by the recovery of the world economy on the graphite industry, the demand for graphite in the world has grown steadily in recent years. According to the statistics of the United States Geological Survey (USGS), flake graphite is mainly distributed in China, Australia, Brazil, Canada, Germany and Madagascar. China's output is the largest, reaching 750,000 tons, accounting for 68% of the world's graphite output. The main exporters of natural graphite are China, Mexico, Canada, Brazil and Madagascar. The graphite exported by these countries accounts for 97% of the world's graphite and 90% of graphite exports. Earth-based graphite is mainly exported to Mexico, bulk graphite is exported to Sri Lanka, and China, Canada, and Madagascar export crystalline flake graphite.

The price of natural flake graphite varies randomly with factors such as production costs, transportation costs, international conditions, exchange rates, and supply and demand in the natural flake graphite market. 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 natural flake graphite materials, please feel free to contact me to get the latest price of natural flake graphite.

Natural flake graphite supplier

As a global flake 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 (including oxides, carbides, nitrides, single metals, etc.), high-purity targets, functional ceramics and structural devices, and provides OEM services.