A high-vacuum continuous graphite purification device and its application

Abstract

The invention discloses a high-vacuum continuous graphite purification device and an application thereof, belonging to the technical field of graphite purification. Including: feeding chamber, discharging chamber, conveying device, induction heating device, differential vacuum chamber, air pump group; the conveying device is set horizontally, and transports raw materials from the feeding chamber to the discharging chamber during operation; the induction heating device is surrounded by The periphery of the transmission device; the heating section of the induction heating device is externally connected to the air pump group through the pipeline; there are differential vacuum chambers connected to it on both sides of the heating section; the differential vacuum chamber includes 4-6 chambers, the other end of the chamber is connected to the pumping The air pump group is communicated through pipelines. The invention only heats the graphite carbon passing through the heated part, and simultaneously vacuumizes during the purification process, thereby reducing the graphite purification temperature and improving the purification efficiency. In addition, the present invention chooses to heat and purify graphite simultaneously during the transportation process, which enables continuous operation and solves the problems of inability to continuously purify and insufficient and uniform purification in the prior art.

Description

technical field [0001] The invention relates to the technical field of graphite purification, in particular to a high-vacuum continuous graphite purification device and its application. Background technique [0002] In the prior art, graphite purification methods mainly include: flotation method, alkali acid method, hydrofluoric acid method, chlorination roasting method and high temperature method. Among them, high-temperature purification is physical purification, and graphite ore often contains Si 2 o 3 、Al 2 o 3 , MgO, Fe 3 o 4 , CaO and other impurities, the above impurities have a high boiling point, and the boiling point temperature of MgO has reached 3600°C. Therefore, in the process of heating and purifying graphite at high temperature, it is necessary to pass inert protective gas and increase the heating temperature to 3000°C Only through the above can a product with a carbon content of more than 99.99% be obtained, which leads to a complicated purification pr...

AI Technical Summary

Problems solved by technology

Although this method can reduce the purification temperature, Cl 2 It is toxic with HCl, etc., and carbon powder needs to be added as a reducing agent during the reaction process, the operation is complicated and the production cost is high

[0004] In addition, traditional production methods and production equipment have the problem of discontinuous production, low efficiency, and a lot of labor. Every link in the middle needs to be operated by people, and the cost is relatively high.

Moreover, the intermittent production method is adopted, because the temperature of the material is too high when it is released, and it is easy to cause the plastic layer of the inner lining of the spinner to be deformed and damaged after entering the centrifuge, which is inconvenient to maintain and the maintenance cost is increased.

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