Furnace body at rubber discharging section of sintering furnace for high-nickel ternary material of lithium battery, and sintering furnace

Abstract

The invention discloses a furnace body at a rubber discharging section of a sintering furnace for a high-nickel ternary material of a lithium battery, and the sintering furnace. The furnace body at the rubber discharging section comprises a furnace chamber, wherein a stick is arranged in the furnace chamber and divides the furnace chamber into a kiln chamber and a heating chamber; a heating element is arranged in the heating chamber; a bottom air inlet is formed in the heating chamber; an air inlet circulating mechanism is arranged at one end of the furnace chamber; an air bellow is arranged at the other end of the furnace chamber; the air inlet circulating mechanism comprises an air inlet cylinder, a fan base and a circulating fan; the circulating fan is arranged on the upper part in thefan base; the air inlet cylinder faces outwards and communicates with the fan base; the fan base and the air bellow communicate with the heating chamber; and the air bellow is provided with an exhaustpipe, so that hot air can be ensured to cyclically flow in the furnace body, a rubber discharging effect is good, and the high-nickel ternary material is fully pre-sintered at the temperature of 250DEG C to 700 DEG C and under the uniform atmosphere. The sintering furnace comprises a furnace body at a preheating section, the furnace body at the rubber discharging section, a furnace body at a high-temperature section, a furnace body at a temperature-reducing section and a furnace body at a cooling section, wherein the fan base of the furnace body at the rubber discharging section communicateswith the furnace body at the temperature-reducing section through a hot air pipeline, so that the temperature of newly entered air of the furnace body at the rubber discharging section exceeds 200 DEG C.

Description

technical field [0001] The invention relates to sintering equipment for high-nickel ternary materials, in particular to a grate rubber section furnace body and a sintering furnace for sintering high-nickel ternary materials for lithium batteries. Background technique [0002] With the rapid development of electronic information technology, power lithium-ion batteries are widely used in aerospace, military equipment, new energy vehicles, electric motorcycles, electric bicycles, electric tools and other fields. Higher requirements are also put forward for comprehensive performance such as frequency, safety performance and production cost. Lithium battery material manufacturing equipment is the carrier of lithium battery production technology, which determines the quality of lithium battery products and affects the cost of lithium battery products. The production of high-quality lithium battery materials is an inevitable choice for all manufacturers. As one of the lithium bat...

AI Technical Summary

Problems solved by technology

[0005] (1) The uniformity of temperature and atmosphere is poor, and the precursor material is not fully pre-sintered around 500 °C: the mixture of ternary precursor material NixCoyAlz(OH)2 and LiOH decomposes around 250 °C, and there is slow weight loss at 400 °C ~ 500 °C, 570 Around ℃ corresponds to the melting and reaction of lithium hydroxide. After 700 ℃, the quality gradually stabilizes, and the target product begins to form

Because the cold air entering the debinding section lowers the temperature of each section of the debinding section, and the hot air is not fully mixed in the furnace cavity, the result is that the precursor material is not fully pre-sintered at a suitable temperature (about 500°C), which seriously It affects the lattice structure of the product, causing the material to fail to sinter normally after 700°C

[0006] (2) The utilization rate of hot air is low, and the degumming effect is poor: there is not enough degumming time and sufficient mixing and circulation

However, coating the lining material with an anti-corrosion layer reduces the erosion of exhaust gas to a certain extent. After sintering for a period of time, the coating effect becomes worse and worse at high temperatures; The surface affects the heating effect, and at the same time increases the load on the heating element, shortens its service life and increases the cost

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