Vertical continuous induction type high-temperature graphitization furnace

Abstract

The invention discloses a vertical continuous induction type high-temperature graphitization furnace. The graphitization furnace comprises a furnace body shell, a hopper positioned above the furnace body shell, and a discharging pipe positioned at the bottom of the furnace body shell, wherein the hearth inside the furnace body shell is divided into four areas from top to bottom, namely a preheating area, a heating area, a temperature reducing area and a cooling area; every two adjacent areas are communicated with each other or isolated from each other by a corresponding isolating material part having an opening and closing function; a discharging port of the hopper is connected with a feeding hole of the preheating area by a valve; a heat insulating layer is arranged in the peripheral direction of the outer wall of the hearth; a heater is arranged between the inner wall of the shell and the heat insulating layer segment outside the heating area; a cooling system is arranged outside the discharging pipe so that the cooling area is formed inside the discharging pipe. The graphitization furnace disclosed by the invention has the advantages of greatly increasing the yield and quality of a graphitized material, satisfying the technological requirements of thermal treatment of a cathode material of a power battery and improving the quality of the battery.

Description

technical field [0001] The invention relates to the field of graphitization equipment, in particular to a vertical continuous induction high-temperature graphitization furnace. Background technique [0002] With the acceleration of the new energy vehicle industry, power batteries have quickly become a hot spot for investment in the business community, and the negative electrode graphitization materials used in lithium-ion batteries are the key factors that determine their performance; the demand and usage of high-purity graphite are increasing day by day. Efficient industrial production is urgently needed. The existing industrial production of graphitization furnace is mainly Acheson furnace, the utilization rate of electric energy is too low in the production process, the loss of heat energy is too large, and the product quality is uneven, and the dust in the production environment is too large to cause harm to human body. [0003] In order to solve the above problems, var...

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Problems solved by technology

Although these graphitization furnaces solve the production problems in theory, there are still problems in actual production, such as short production life of equipment, high failure rate, poor product performance uniformity, and large consumption of insulation materials, which cannot meet the expected production goals.

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