The technological properties of graphite are mainly determined by its crystalline form. Crystalline morphology of different graphite minerals, with different industrial value and purpose. Industry, according to different crystalline morphology, the natural graphite into three categories.
1.dense crystalline graphite
Dense crystalline graphite is also called bulk graphite. Such graphite crystal clear crystal visible. Particle diameter greater than 0.1 mm. The crystal arrangement is disordered and the structure is compact and massive. This: the characteristics of graphite is high grade, general carbon content is 60 ~ 65%, sometimes up to 80 ~ 98%, but plasticity and smooth than that of flake graphite.
Graphite crystals are in the form of a scale; this is made of high strength under high pressure. This kind of graphite ore is characterized by high grade, generally in the 2 to 3%, or 100 to 25%. Is one of the best ore floatability in nature, which can take over HISTEP grade graphite concentrate. This type of graphite can be floating, lubricating, and more malleable than other types of graphite; therefore, it is the largest industrial value.
Hidden quality graphite also known as amorphous or soil shaped graphite, the graphite crystal diameter, generally less than 1 micron, is a collection of microcrystalline graphite, only under the electron microscopy can be seen in the crystal. The characteristics of this kind of graphite is that the surface is ground, lack of luster, and poor lubrication. Higher grade. General 60 ~ 80%. A few more than 90%. Ore optional sex is poor.