The main beneficiation methods of graphite, the characteristics of the process and the flotation reagents used are listed in Table 1. Strontium Carbonate,High Purity Strontium Carbonate,High Whiteness Strontium Carbonate,White Powder Strontium Carbonate Shenzhou Jiaxin Chemical Co.,Ltd , https://www.jiaxinbaso4.com
With the development of industry, the demand for graphite products is developing in the direction of high purity and ultrafine. On the one hand, graphite crystals of high-purity large scales are required, and on the other hand, graphite powders of ultrafine (-5 μm, -1 μm, -0.5 μm, etc.) are required. The graphite purification method includes a chemical purification method, a high temperature purification method and a mixing method, and the chemical purification method can be further divided into a wet method and a dry method. See Table 2 for details.
Some graphite tailings containing pyrite, rutile and other useful components, to increase the economic efficiency of enterprises and more efficient use of mineral resources, these may be integrated recovered useful components which recycling in Table 3.
Comprehensive utilization technology of graphite
The flake graphite has good floatability, and the flotation method is often used. The ore should be crushed and ground before flotation. The main ore processing procedures include: raw ore coarse crushing, fine crushing, coarse grinding, flotation, concentrate regrind, concentrate dehydration, dry grading and packaging. Amorphous graphite crystals are extremely small, graphite particles are often embedded in clay , separation is difficult, but because of the high grade (generally between 60-90%), many graphite mines at home and abroad will directly carry out the ore. Grinding processing, the sale of graphite powder products, the process is: raw ore → coarse crushing → medium crushing → drying → grinding → classification → packaging.