The natural aphanitic graphite

The natural aphanitic Graphite: fine grain, generally under the microscope is not easy to identify the crystal shape of Natural Graphite, grain less than one micron.

The natural aphanitic graphite, also known as earth-like graphite, amorphous graphite.

Aphanitic graphite is a rock made of carbonaceous material by thermal decomposition of deep metamorphic products (such as from coal metamorphic). Or from the gas into the role of cryptocrystalline graphite, ore optional poor. Its conductivity, thermal conductivity, lubricity, oxidation resistance were lower than the crystalline graphite.
Generally used for crucible, electrode, electric carbon, pencil. The finished product has a higher mechanical strength.

Microcrystalline graphite, also known as soil-like Graphite Powder, amorphous graphite powder, black lead powder, are aphanitic graphite. Mainly hidden in Hebei, Inner Mongolia, Northeast, Hunan, Xinjiang and other places. With the exploration of the geological sector several times, China's existing soil-like graphite 2 billion tons is the world's reserves of the first. Microcrystalline graphite most of the Graphite Carbon, color gray, metallic luster, soft, Mo color hardness 1-2, the proportion of 2-2.24, chemical stability, not affected by strong acid and alkali, harmful impurities, iron, Sulfur, phosphorus, nitrogen, molybdenum, hydrogen content is low, with high temperature, heat transfer, conductive, lubrication and plasticity and so on. Widely used in casting, smearing, batteries, carbon products, pencils, pigments, refractories, smelting, carbon agent, casting mold powder and so on. Specifications are divided into "WT" - iron requirements (commonly known as "electric carbon"), "W" - no iron requirements (commonly known as "casting") two categories, the main products are graphite ball, graphite powder, Graphite sand, carbon agent.

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