(1) First, determine the type of Graphite powder ore. Graphite ore minerals and ores earth graphite graphite. Rudy graphite is characterized by scaly leaves or form ore is not great, usually 3% to 5%, maximum 20% to 25%. This type of graphite by flotation class pool to 90%, so 2% to 3% of the ore can be used. Excellent result flake graphite, commonly used in the manufacture of high quality carbon products. Terrestrial graphite also known as aphanitic graphite ore. This crystal graphite ore is small, usually less than 1 micrometer in the ground, on the surface, lack luster performance as the industry does not exfoliate. The higher graphite ores or ore, usually from 60% to 80%, but not poor fluidity class will significantly improve the flotation stage, therefore, less than 65%, mining ore, usually no degree 65% and 80%, can be used in this way. Graphite ore, not only to see the quality of ore, but first you must know the type, and then decide if the program flotation.
(2) The process of sorting, we need to protect large scale. Large graphite less use of resources, high cost, so be sure to pay attention to the protection of a large scale, they do not break in production. Typically, in large amounts, 50 mesh, 80 mesh, 100 applications of graphite. Measures to protect the large flakes in the process of sorting some grinding to select another process. For each selected monomer dissociation graphite milling time, such as ore grinding a very small detail, it undermines a large scale. Such as large-scale graphite my villa south China mine graphite, which is the first rough selection acceptor, four grinding six choices for protecting a large scale is not destroyed, but that the concentrate grade 90%.
(3) high quality requirements. Graphite coating products requires a higher level of over 89%, such as an ordinary pencil graphite grade in 89% to 98%. Some of the electric cable 99% carbon, and so on. In order to obtain high-quality graphite graphite flotation concentrate dialed generally better than more.