Graphite industry classification
Industrial graphite ore is divided into crystalline (Flake) and stable crystalline graphite ore (earthy) graphite ore two categories. Crystalline graphite ore can be divided into scales forming dense and two. Scaly crystalline graphite ore types mainly in China, followed by stable crystal type, compact crystalline graphite in individual deposits in tuokebula, Xinjiang, industrial value.
Crystal Flake graphite ore good Crystal size greater than 1 µ m, usually 0.05~1.5mm, big up to 5~10MM, show more collection. Ore grade is low, usually 3~13.5%. Associated minerals include Muscovite, feldspar, quartz, tremolite, diopside, Garnet and small amounts of pyrite, calcite, and sometimes with rutile, vanadium, mica and other useful components. Flake graphite ores according to the occurrence of different lithology of the rock, gneiss, schist, diopsidite type, granulite, mixing rock, marble and granite types, such as seven, six types of ore produced in regional metamorphism causes deposits in the type of latter ores occur in magmatic hydrothermal ore deposits.
Stable crystalline graphite ore is microcrystalline aggregates in General, Crystal size is less than 1 µ m, only under an electron microscope to observe its crystal shape. Mineral grey, black, steel grey, gloss Matt, with a dense massive, earthy and layered, page structure. Cryptocrystalline graphite processing performance than Flake graphite industrial application range is smaller, ore grades are generally higher, but poor Ore beneficiation. Mineral composition of graphite, associated with Andalusite, hydromica, sericite, tourmaline and a small amount of pyrite, limonite, calcite, and so on. Generally as anti-sperm and ash-15~22%, volatile is divided into 1~2% and water 2~7%.