Sintering process and sintering device of battery material

Abstract

The invention discloses a sintering process and a sintering device of a battery material. The sintering process is characterized by comprising the following steps of: 1) preparing a material to be sintered, and processing the material to be sintered into dry fine powder; 2) performing flash and suspension sintering, specifically, blowing or scattering the material to be sintered into a sintering tower by utilizing a machine, so as to carry out speedy sintering; and 3) discharging a product out of a furnace, and taking out the sintered material through free falling or cyclone collection to obtain the battery material product. According to the sintering process and sintering device of the battery material of the invention, a casket-free suspension sintering mode is adopted, so that the heat transfer efficiency is greatly improved, the sintering period is shortened, the consistency of product quality is improved, the production cost is reduced, and the recovery problem of consumables is reduced. The method and device have remarkable economic and social benefits.

Description

technical field [0001] The invention relates to the technical field of battery material processing, in particular to a firing process and a firing device for battery materials. Background technique [0002] Storage batteries, especially lithium batteries, have the advantages of environmental protection and safety, so they are widely used. In the prior art, the firing method of positive and negative electrode materials of storage batteries is mainly stacked in saggers and fired in roller kiln or pusher kiln. [0003] There are the following problems in the existing firing process of these battery materials: one is that, because the weight of the sagger is nearly twice that of the material to be fired, the sagger consumes a large amount of energy during firing; and the sagger is not conducive to the The uniform and rapid heating and cooling prolong the firing cycle; secondly, the sagger firing makes the internal and external temperature field of the material uneven, and the l...

AI Technical Summary

Problems solved by technology

[0003] There are the following problems in the existing firing process of these battery materials: one is that, because the weight of the sagger is nearly twice that of the material to be fired, the sagger consumes a large amount of energy during firing; and the sagger is not conducive to the The uniform and rapid heating and cooling prolong the firing cycle; secondly, the sagger firing makes the internal and external temperature field of the material uneven, and the long firing cycle also makes the material coarse crystallization, and the ideal material is microcrystallization; The third is that due to the repeated use of the sagger under high temperature thermal shock and material erosion, the sagger is prone to cracking and material leakage defects, resulting in the sagger being forced to be scrapped in advance, which increases the cost of consumables; and it is difficult to recycle the used sagger Utilization increases the pressure on environmental protection

Images