Graphite purification and graphitizable high temperature vertical continuous induction heating furnace

Abstract

The invention relates to a graphite purification and graphitizable high temperature vertical continuous induction heating furnace, comprising a furnace body, a hearth, an induction heating coil, an observation window device, a material inlet device, a material outlet device and the like. The heater furnace is in a vertical structure and adopts a continuous working mode and induction heating; the highest use temperature is 3000 DEG C; the hearth is a cylindrical space, the material inlet device is connected above the hearth while the material outlet device is connected below the hearth; the materal enters into the hearth under the coordinated action of the material inlet device and the material outlet device, falls down and passes through the hearth at an even speed; ash content and volatile matter content in the material are changed into volatile substances under the action of hearth temperature and purified gas in the temperature environment; and the volatile substances are discharged out of the furnace from a discharge pipe under the action of high temperature reaction pressure and scavenge gas, thus realizing continuous purification or continuous graphitizable process by one step. The induction heating furnace can make up for the insufficiencies of hydrofluoric acid wet process purification, and is characterized by high efficiency, low energy consumption and environment protection.

Description

technical field [0001] The invention relates to an induction heating furnace, in particular to a high-temperature vertical continuous induction heating furnace capable of realizing a continuous purification process of granular natural graphite and a continuous graphitization process of granular natural graphite. technical background [0002] Natural microcrystalline graphite (commonly known as earthy graphite, academically known as cryptocrystalline graphite) is one of the advantageous mineral resources in my country. Compared with natural flake graphite (also known as apparent crystalline graphite or crystalline graphite), microcrystalline graphite purification technology It is difficult, and there are few researches on natural microcrystalline graphite at home and abroad. Although a small amount of purification can be carried out in China, most of the methods used are hydrofluoric acid wet process, which has complicated process, high cost, serious environmental pollution and...

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Problems solved by technology

[0002] Natural microcrystalline graphite (commonly known as earthy graphite, academically called cryptocrystalline graphite) is one of the advantageous mineral resources in my country. Compared with natural flake graphite (also known as apparent crystalline graphite or crystalline graphite), microcrystalline graphite purification technology It is more difficult, and there are few researches on natural microcrystalline graphite at home and abroad. Although a small amount of purification can be carried out in China, most of the methods used are hydrofluoric acid wet process, which has complex process, high cost, serious environmental pollution and low recovery rate. Disadvantages of low cost and large waste of resources

The purification of flake graphite is also based on the hydrofluoric acid wet process. Although it can achieve industrial production, it also has the disadvantages of complex process, high cost, serious environmental pollution, low recovery rate, and large waste of resources.

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