Micropowder graphite features uniform particle size and a large specific surface area. It offers excellent lubricity, electrical conductivity, and thermal conductivity, along with outstanding high-temperature resistance, corrosion resistance, and chemical stability. It disperses well, and some high-end grades boast high purity and extremely low impurity content, making them suitable for a wide range of complex applications.
Micropowder graphite is manufactured using high-quality natural flake graphite as the core raw material, with some grades derived from premium by-products of spherical graphite production. It is a versatile, energy-efficient, and environmentally friendly graphite product. Its core advantages lie in its uniform particle size and large specific surface area, combined with excellent lubricity, high-temperature resistance, corrosion resistance, and electrical and thermal conductivity. Products can be customized to different purity levels and particle size specifications based on application requirements, meeting diverse needs ranging from general industrial to high-end applications.
The core characteristics of micro-powdered graphite include uniform particle size, high specific surface area, excellent lubricity, high-temperature resistance, corrosion resistance, superior electrical and thermal conductivity, and strong chemical stability. It is also energy-efficient, environmentally friendly, and highly adaptable. Its applications are extremely broad, serving as a base material for high-temperature lubricants, a release agent in powder metallurgy, and a filler in rubber and plastic composites. It is also used in carbon film resistors, the formulation of conductive liquids, polishing agents for glass and paper, and as raw material for synthetic diamonds. It plays a vital role in high-end sectors such as lithium-ion batteries, aerospace, chemical engineering, and national defense, making it an indispensable basic raw material and performance-enhancing material in modern industrial production.
The micro-powder graphite processing procedure First, natural flake graphite (or spherical graphite by-products) is used as raw material. In the micro-powder graphite workshop, it undergoes processes such as crushing, grinding, air classification, and purification to produce initial micro-powder graphite. Depending on application requirements, the material is then sent to the purification workshop, where it undergoes purification treatments such as high-temperature oxidation and acid leaching. The final result is micro-powder graphite products of varying purity levels and particle size specifications, which can be customized to meet specific customer requirements.
There is a key issue with the use of flake graphite in refractory materials: poor wettability.
Specifically:
Flake graphite has low surface tension, and its surface contains approximately 0.45% volatile organic compounds.
The graphite surface is highly hydrophobic, resulting in poor wettability with the silicate liquid phase.
It tends to agglomerate in castables, making it difficult to disperse uniformly, which affects the material’s density.
It should be stored in a dry, well-ventilated environment to prevent caking caused by moisture. Avoid direct sunlight and high temperatures. Packaging must be tightly sealed to prevent moisture absorption and deterioration.
Expandable graphite is a graphite intercalation compound. It is produced by using natural flake graphite as raw material and introducing acids (such as sulfuric acid) and oxidizing agents into the graphite layers through chemical or electrochemical methods.
Graphite consists of countless layers of graphene stacked on top of one another, while graphene is a single layer of graphite. You can think of it this way: if you repeatedly wrap graphite with adhesive tape and peel it off, you may eventually obtain a single layer of graphene—which is, in fact, how it was originally discovered.
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