Time:2023.02.07Browse:1
(1) Deep crystalline graphite
The dense crystal graphite is also called block -like graphite. Such graphite crystals are obviously visible to the naked eye. The diameter of the particles is greater than 0.1 mm, which is concentrated in 0.1-1m/g than the surface area. This graphite is characterized by high quality. Generally, the carbon content is 60-65%, and sometimes 80-98%, but its plasticity and slipperyability are not as good as scales.
Block -shaped graphite is the most rare and highest value graphite mine, which is mainly discovered in Sri Lanka.
(2) Scales graphite
The scale graphite is combined by many single -layer graphite. It exists in a separate sheet in the metamorphic rock. The reserves are small, the value is high, and the crystal is scales. The scales and fine scale are divided into. The characteristics of such graphite ore are not high, generally between 2 and 3%, or 10 to 25%. It is one of the best ore in nature. The floating, lubricability, and plasticity of this type of graphite are superior to other types of graphite, so its industrial value is the greatest.
Scales are mainly distributed in Australia, Brazil, Canada, China, Germany and Madagascar. In recent years, Africa Tanzania and Mozambique have also found a large number of scale graphite resources. Some scholars have studied the scale graphite ore in Mozambique Ancuaba and Tanzania's Chilalo region. The results show that the mineral composition in graphite ore in the ANCUABA and Chilalo region is similar, and both are high -quality large scale graphite resources.
(3) Cultivation crystal graphite
Cultivation crystal graphite, also known as micro-graphite or earth-shaped graphite, is generally less than 1 micron in the diameter of this graphite, which is concentrated in 1-5m/g than the surface area. It is a collection of micro-graphite. See crystal shape. This type of graphite is characterized by surface -shaped, lacking luster, and lubricating than scales. High quality. Generally 60-85%, a few of which are as high as 90%. There are generally many applications in the casting industry. With the improvement of graphite purification technology, the application of earth -shaped graphite is becoming more and more extensive.
Earth -shaped graphite is the most reserves. The scales are small and the crystallization is not high. It is used in the production of low -value products. It is the lowest price of 3 graphite. Mexico and the United States.
Global graphite reserves in 2015 were 230 million t, of which Turkey's graphite reserves were 90 million t, accounting for 39.13%of global reserves, 72 million T in Brazil, accounting for 31.30%of global reserves. China is 55 million T, accounting for global reserves. 23.91%