Notices During The Flotation Progress Of Graphite
Natural graphite can be floating well, generally using the flotation method
, with a neutral oil can collectors. Flotation should note the following points:
(1) First ascertain the type of graphite ore. Graphite ore into minerals and earthy graphite of flake graphite ore. Flake graphite ore is characterized by graphite scaly or leaf-shaped, the ore grade is not high, usually 3% to 5%, a maximum of 20% to 25%.This type of graphite floating through the flotation, the grade up to 90%, so, 2% to 3% of the ore grade can be mined. The excellent performance of flake graphite, generally used in the manufacture of advanced carbon products. Earthy graphite is also known as aphanitic graphite ore. A graphite crystal of this ore is small, usually less than 1m, earthy surface, lack of luster industrial performance not as flake graphite. This graphite ore higher ore grade, generally 60% to 80%, but poor Floatability grade will not be significantly improved by flotation, therefore, the grade is less than 65% of the ore, is not normally mining, the grade of between 65% and 80%, the sorting can be used. Graphite ore, not only to see the level of the ore grade, but should first figure out its type, and then decide whether the flotation program.
(2) sorting process, we need to protect the large scales. Large flake graphite use less resources, higher value, so must pay attention to protect the large scales are not broken in production. Usually large scales, +50 meshes, +80 mesh, +100 purpose of flake graphite. Measures to protect the large flake are in the process of sorting multiple grinding repeatedly to choose another process. Elected each grinding to get the monomer dissociation of graphite in a timely manner, such as ore grinding time to a very fine granularity, it will undermine the large scales. Such as China's large-scale graphite mine south villa graphite mine, that is the first rough selection of a scavenger, four grinding six selection process, both to protect the large scales is not destroyed, but also so that the concentrate grade of 90% .
(3) The grade requirements high. Graphite products taste requires a higher grade of more than 89% such as ordinary flake graphite pencil graphite grade requirements in 89% to 98%. Some electric carbon graphite grade of 99%, and so on. In order to obtain high-grade graphite concentrate in graphite flotation, the selected number of generally better than more.
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