Drying Machine Specifically Designed for Lithium-Ion Battery Anode Materials

Graphite powder is soft and blackish-gray in color; it has a greasy feel and can stain paper. Its hardness ranges from 1 to 2, but along the vertical direction, its hardness can increase to 3–5 as the impurity content rises. Its specific gravity is 1.9–2.3. In the absence of oxygen, its melting point exceeds 3,000°C, making it one of the most heat-resistant minerals. At room temperature, graphite powder is chemically stable and insoluble in water, dilute acids, dilute alkalis, and organic solvents. The material possesses high-temperature electrical conductivity and can be used as refractory material, conductive material, and wear-resistant lubricant.

Graphite powder is a substance that reacts very sensitively to chemical changes; its resistivity varies in different environments, meaning its resistance value changes. However, one thing remains constant: Graphite powder is one of the best non-metallic conductive materials. As long as the graphite powder remains unbroken within an insulating object—even if it is as thin as a wire—it will conduct electricity. However, there is no exact figure for its resistance value, as the resistance of graphite powder varies depending on its particle size, the materials it is used with, and the specific environment. Due to its unique structure, graphite possesses the following special properties:
1) 耐高温型:石墨的熔点为3850±50℃，沸点为4250℃，即使经超高温电弧灼烧，重量的损失很小，热膨胀系数也很小。石墨强度随温度提高而加强，在2000℃时，石墨强度提高一倍。

1) High-temperature resistance: Graphite has a melting point of 3,850 ± 50°C and a boiling point of 4,250°C. Even when exposed to ultra-high-temperature electric arcs, it suffers minimal weight loss and exhibits a very low coefficient of thermal expansion. The strength of graphite increases with rising temperature; at 2,000°C, its strength doubles.

2) Electrical and Thermal Conductivity: Graphite’s electrical conductivity is 100 times higher than that of typical non-metallic minerals. Its thermal conductivity exceeds that of metallic materials such as steel, iron, and lead. The thermal conductivity decreases as temperature rises; at extremely high temperatures, graphite even acts as a thermal insulator.

3) Lubricity: Graphite’s lubricating properties depend on the size of its flakes; the larger the flakes, the lower the coefficient of friction and the better the lubrication.

4) Chemical Stability: Graphite exhibits excellent chemical stability at room temperature and is resistant to corrosion by acids, alkalis, and organic solvents.

5) Plasticity: Graphite is highly ductile and can be formed into very thin sheets.

6) Thermal Shock Resistance: When used at room temperature, graphite can withstand sudden temperature changes without breaking. During rapid temperature fluctuations, its volume changes minimally, preventing the formation of cracks.

High-purity submicron graphite particles have a very wide range of applications: black conductive coatings in the manufacturing of cathode ray tubes and displays for the electronics and information industry; photosensitive black coatings used in liquid crystal displays, sensors, and color separators; the boundary regions of the three primary colors in color liquid crystal plasma displays to enhance emission efficiency and color contrast; ultra-fine tungsten, molybdenum wire drawing, and various other coatings; the manufacture of high-grade lubricating oils and greases; the production of foamed iron-nickel for high-performance batteries; and numerous other industries such as photographic film.

High-purity ultrafine graphite powders include colloidal graphite powder, which is primarily used in fountain pens, powder metallurgy, lubricating oils, greases, dry batteries, conductive coatings, lubricating coatings, scientific research by the State Commission of Science, Technology and Industry for National Defense and research institutions, civilian nuclear power, aerospace applications, and the development of strategic electronic jamming weapons and smoke screen weapons. Colloidal graphite powder produced in China serves as a benchmark for the development of the country’s graphite industry, with some technologies having reached international standards.

Gran Powder (Sealing and Anti-Seize Grease) Properties and Applications: Withstands temperatures up to 3,000°C and pressures up to 40 kg, it is used for sealing and anti-seize applications on metal mating surfaces and flange connections in ships, aircraft, locomotives, automobiles, construction machinery, and various large-scale petroleum, chemical, and power generation machinery.

Specialty Graphite Coatings: Water-based graphite coatings, conductive graphite coatings, solvent-based graphite coatings, interior and exterior graphite coatings, wire drawing graphite coatings, lubricating graphite coatings, fiberglass coatings, television graphite coatings, and specialty coatings; production processes and design solutions for various non-metallic materials and nanoscale materials. We provide anti-corrosion treatment for various equipment and undertake anti-corrosion treatment projects. With a diverse range of products and complete specifications, our products comply with the “National Standards of the People's Republic of China.” Specialized machinery design and manufacturing of various fine chemical processing equipment, various grinding mills, and formulation processes.