Flake graphite (crystalline graphite)
Properties: scale-like, thin leaf-like crystalline graphite, size is (1.0~2.0) x (0.5~1.0) mm, maximum 4~5mm, thickness 0.02~0.05mm. Scale larger, higher economic value. Are disseminated, the distribution of gneissic rocks.
Has a clear orientation. With the level in the same direction. Graphite content is generally 3%~10%, high 20%, often associated with ancient metamorphic rocks (schist and gneiss), quartz, feldspar, pyroxene mineral paragenesis, can also be seen in igneous rocks and limestone contact zone. Flake graphite layer structure, its lubricity, flexibility, heat resistance and electrical conductivity are better than graphite. Mainly used as a raw material for manufacturing pure graphite products.
Amorphous graphite (aphanitic graphite)
Amorphous graphite and amorphous or cryptocrystalline graphite, the graphite Crystal diameter is usually less than 1 micron, microcrystalline graphite is a collection of only when seen under an electron microscope, crystal. This graphite is the surface of the soil, lack luster, lubrication is poor. High grade. Of anti-sperm. A few as high as 90%. Ore less optional. Microcrystalline graphite into Fe requires no iron requirements and 2 categories, according to the carbon content of product, maximum size is divided into 60 brands, various grades of graphite products for the cosmetic requirements product may not be visible to the naked eye in wood, iron, stone tablets and other debris, products are not contaminated by impurities. Microcrystalline graphite content of acid-soluble iron is less than 1%, mainly used for pencils, batteries, electrodes, graphite emulsion ingredients, graphite bearings and carbon rod of battery raw materials; without iron requirements of microcrystalline graphite is mainly used for cast materials, refractories, raw materials such as dyes and electrode paste.
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