Amorphous Graphite
Size
45μm, 75μm, 150μm, etc
Package
25kg small bags into ton bags or ton bags
Origin
China
Features
Under high temperature conditions, it has special oxidation resistance, etc
Application
Casting coatings, oil field drilling, battery carbon rods, steel, casting materials, refractories, dyes
It is an aggregate of amorphous graphite. The crystal form can be seen only under the electron microscope. Amorphous graphite ore is gray black and steel gray, generally dull, with dense massive, earthy, layered, and lamellar structures. This kind of graphite lacks luster, its lubricity is lower than that of flake graphite, and its selectivity is poor. However, the grade is high, the carbon content is generally 60% ~ 80%, a few are up to more than 90%, the ash content is 15% ~ 22%, the volatile content is 1% ~ 2%, and the moisture content is 2% ~ 7%.
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Amorphous graphite that is, earthy graphite is microcrystalline stone ink and black lead powder. Amorphous graphite does not really have graphite crystals, as its name suggests, but its crystals are too small and have a microcrystalline structure. X-ray analysis shows that amorphous earthen graphite contains 15%-45% crystalline fossil ink, so amorphous graphite is also called microcrystalline graphite.
Amorphous earthy graphite can be divided into two types according to its output form: dispersed earthy graphite ore and dense massive earthy graphite ore.
The dispersed earthen graphite ores mainly occur in the fracture zone or cleavage fissure surface of the flake graphite ores and have a mylonitic structure. The composition is complex and unstable, mainly composed of plagioclase, quartz, graphite, tremolite, chlorite, and so on. The scales are squeezed and broken into tiny fragments, some of which are black star-dotted and hard to discern with the naked eye. Ore grade is low, generally, 2%~3% does not have industrial value.
Dense massive earthen graphite ores are mainly produced by contact metamorphism during thermal metamorphism in the coalfield. The ore is black and dense, with a series of characteristics from graphite to anthracite. Graphite content varies, generally 60%~80%, the lowest 15%, the highest 90%, in addition to graphite, there are sericite, quartz, pyrite, calcite, limonite, clay, and so on. This is the main characteristic of earthy graphite.
The main producing areas of amorphous earthy graphite in the world are Mexico, China, Korea, Austria, and Italy. China’s amorphous graphite is mainly distributed in Hunan, Jilin, Fujian, and other places. The carbon content of amorphous graphite is generally 75~89%, and the true density is about 2.28g/cm3. It is mainly used in the manufacture of refractories, paints, and lubricants for drilling, and its price is lower than flake graphite.
The domestic amorphous graphite is mainly contained in Hebei, Hunan, Inner Mongolia, Shanxi, and other provinces of China, accounting for 67% of the global earthy graphite storage. And good oil, strong electrical conductivity. It is known as “gold sand”. There is also some earthy graphite in the northeast of China. But the poor quality is generally below 50 carbon content.
Amorphous graphite is widely used in casting coatings, oil field drilling, battery carbon rod, iron and steel, casting materials, refractory materials, dyes, fuels, electrode paste, as well as used as a pencil, electrode, battery, graphite emulsion, desulfurized, antiskid agent, smelting carburized, ingot protection slag, graphite bearings, and other products of the ingredients.
The price of Franli amorphous graphite is low, lower than the price of flake graphite, but the quality is good, if you need it, welcome to contact us.
