The negative electrode material can not be forcibly cooled by watering during the graphitization cooling process, and can be naturally cooled by grabbing material layer by layer with grab bucket or suction device. The performance of the hard shell MATERIAL differs greatly from that of qualified PTMS LITHIUM COBALT ACID MATERIAL MAGNETIC magnetic anode material, so the hard shell material 1~5 mm thick should be removed in advance when taking out the crucible, and the qualified material with smooth surface should be collected normally. Load into ton bags for storage and shipment to customers.
Anode MATERIAL crucible about 150 ℃ out of the best, too early removal of the crucible, due to high temperature, resulting in PTMS LITHIUM COBALT ACID MATERIAL MAGNETIC removal of iron anode material oxidation, the specific surface area increases, but also lead to increased costs of crucible oxidation damage. Taking out the crucible too late will also oxidize the negative powder material, increase the specific surface area, lengthen the production cycle and increase the cost.
At the high temperature of 3000 ℃ graphitization, all the other elements except C are vaporized and discharged. However, there will still be a small amount of impurities adsorbed on the negative electrode surface during the cooling process, and a rough hard shell will be formed on the surface of the crucible when it is released, and more hard shell materials with high ash and high volatile content will be formed. The selection of low ash and low volatile excipients is also based on this reason, which is conducive to PTMS LITHIUM COBALT ACID MATERIAL MAGNETIC anode material for iron removal.
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