Pure graphite is a mineral form of the element carbon (atomic number 6) and its symbol is c. It forms in veins in metamorphic rocks as the result of the metamorphism of organic material included in limestone deposits. It is an extremely soft mineral at 1 to 2 on mohs' hardness scale. It is black and has a black streak. (streak is the color of a mineral when it is crushed to a powder). Its softness and streak make graphite useful in making f+leadf+ for pencils. Crystals are uncommon, but when they occur, they are found as rough, six-sided (hexagonal) flakes. It breaks into minute, flexible flakes that easily slide over one another. Mineralogists call this basal cleavage. This feature is the cause of graphite distinctive greasy feel. It is this greasy characteristic that makes graphite a good lubricant. Because it is a solid material, it is known as a dry lubricant. Graphite is the only non-metal element that is a good conductor of electricity.
25kg/bag;1 ton.Kraft bag.20ton/20fcl.
Types: high-purity graphite, high carbon graphite and medium carbon graphite.
Specifications: the particle size ranges from 45+8m-500+8m (325mesh-35mesh), and the carbon content ranges from 85 to 99.9%.
Advantages:
Perfect crystallization, thin flake, good flexibility, excellent chemical and physical properties, superior conductivity, self-lubricity and resistance to temperature, corrosion and hot shock, and much more.
Usage: crystalline flake graphite is widely used as an essential nonmetalic mineral in almost all industries. It can be used as high-quality refractory material or coating in metallurgical industry, black lead in light industry, carbon brush in electronics industry, electrode in battery industry and catalyst in chemical fertilizer industry, to name just a few. After being deep processed, crystalline flake graphite can be used to produce tv tube coatings, graphite friction reducing additives and many other high-tech products. Main technical index: see tables attached.
25kg/bag;1 ton/ kraft bag;20 ton/20fcl or ad the customer request.
Expandable graphite is also called flexible graphite, made of high quality natural flaky graphite through special chemical modification at high temperature, and has the expansion ratio from 100 to 400 ml/g.
Advantages:
The product has natural flake graphite property, and such characteristics as good expansibility, pressure resistance, forming plasticity, self-lubrication, flexibility and extensibility and sealing performance.Finished product has high temperature resistance, anti-corrosion, radiation protection, thermal insulation, lubrication, chemical stability, etc.
Usage:
The product has even particle size distribution and stable quality, and is high quality raw material for various graphite plate and sealing members. It is also used as novelty protecting slag, exothermic compound and flame retardant etc., for metallurgical industry, and widely used in high-tech industry field, such as petroleum, chemical, light industry, medical care, electric power, aviation, automobile, shipbuilding, instruments, military industry, nuclear energy, etc.
Spec:32mesh 50mesh 80mesh 100mesh -100mesh -200mesh -325mesh etc.
25kg/bag;1 ton/ kraft bag;20 ton/20fcl or ad the customer request.
Natural graphite is used mostly in what are called refractory applications. Refractory applications are those that involve extremely high heat and therefore demand materials that will not melt or disintegrate under such extreme conditions. One example of this use is in the crucibles used in the steel industry. Such refractory applications account for the majority of the usage of graphite.
It is also used to make brake linings, lubricants, and molds in foundries. A variety of other industrial uses account for the remaining graphite consumed each year.
25kg/bag;1 ton/ kraft bag;20 ton/20fcl or ad the customer request.
Flexible graphite sheet is made from flake graphite with high carbon content which is gone through chemical treatment, expanding. The product is made from flake graphite with high carbon content which is gone through chemical treatment, expanding under high temperature and then formed by rolling. It owns the characteristics of high temperature resistance, corrosion resistance and good elasticity. Flexible graphite sheet or roll is the main raw material for making all kinds of graphite tapes, reinforced graphite sheets, sealing and packing gaskets.
25kg/bag;1 ton/ kraft bag;20 ton/20fcl or ad the customer request.
