The purpose of the test is to provide a basis for the development and utilization of the mine.
Baoji Graphite Mine is a graphite-rich metamorphic rock-schist, mainly composed of mica graphite quartz schist, followed by sericite graphite quartz schist, muscovite calcite schist and zoisite tremolite graphite quartz schist. The original rock is a set of fine debris rich in carbon – argillaceous. Some contain siliceous and calcareous (carbonate). The metamorphic mineral combination is dominated by biotite + muscovite + quartz, and the metamorphic phase corresponds to the high green schist facies, which does not exceed the low amphibolite facies. There are still many sericite and carbonaceous residues in the rock that are equivalent to the low-green schist facies, indicating that the metamorphic time is short, and the deterioration is not complete.
The graphite ore has a fine particle size, varying from 0.35 to 0.03 mm in length, 0.05 to 0.003 mm in width, and 15:1 to 3:1 in aspect ratio; concentrated in length 0.2 to 0.05 mm, width 0.025 to 0.005 mm, length and width. Between 10:1~5:1. Graphite crystals tend to be burr-like around, and the degree of graphite crystallization is poor. According to the characteristics of Baoji graphite mine, the multi-stage grinding multi-stage sorting process can obtain 87.60% of graphite concentrate containing graphite carbon, and the recovery rate is 91.38%. More ideal.
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