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Graphite is one of the minerals of elemental carbon crystal. It has excellent properties such as light weight, high temperature resistance, thermal conductivity, electrical conductivity, lubrication, plasticity and chemical stability. It is widely used.
According to the conditions of graphite formation, graphite deposits can be divided into five categories. Due to their different structures and symbiotic minerals, the floatability is affected, and the flotation method is slightly different.
The floatability of natural graphite is quite good. The flotation method can select concentrates with a taste of 80%-90% from the original ore with a taste of 5%-10%. In particular, scaly graphite is almost always classified by flotation.
Flotation Principle Process and Process Internal Structure Principle Process--To protect graphite scales from damage, a multi-stage grinding process should be used.
After repeated grinding and re-election, the quality of the concentrate meets the requirements. The number of grindings is related to the mineral composition of the ore, the inlaid properties, the taste of the original ore and the quality requirements of the concentrate.
In order to remove the gangue impurities sandwiched between the graphite scales, the particle size of the graphite itself should be as small as possible, so the grinding equipment adopts a rod mill and a grinding machine mainly for grinding, they want It is better than a ball mill with a striking force. In order to improve the grinding effect, a concentration operation should be set before grinding to maintain the grinding concentration at 40-45%. The concentration device can be a hydrocyclone or a sedimentation centrifuge.
In the process of selection, if there are graphite monomer scales larger than 80 mesh, they should be separated in advance and can be used as raw materials for smelting. The separation method can be sieved by a wet method.
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