Integrated production process for ternary material

Abstract

The invention relates to the technical field of ternary material manufacturing, in particular to an integrated production process for a ternary material. The process comprises the following steps: fully stirring and mixing a ternary material raw material and pure water in stirring and mixing equipment to form a ternary material salt solution; feeding the ternary material salt solution into a washing kettle in virtue of the stirring and mixing equipment, adding dilute alkali liquor, a complexing agent, a coating agent and pure water at the same time, carrying out a complexing reaction and conducting ageing; after aging, feeding a product of the previous step into a stirring tank type filter, adding dry powder, and carrying out slurrying, washing and filtering by using pure water and dilutealkali liquor; and allowing a filtered and washed filter cake to enter a drying machine via a solid discharging pipe and carrying out drying. The process can adapt to the process requirements of largeproduction scale, high water content and washing effect requirements, high particle crystal form requirements, high purity requirements and high closed operation requirements of the ternary material;and the self productivity and the production efficiency of the process can be effectively ensured, and the green manufacturing characteristics of efficiency improvement, energy conservation, consumption reduction and emission reduction required by the current green manufacturing are synchronously achieved.

Description

technical field [0001] The invention relates to the technical field of ternary material manufacturing, in particular to an integrated production process for ternary materials. Background technique [0002] Lithium-ion batteries were commercialized in 1991 due to their high energy density, high output voltage, high power, low self-discharge, no memory effect, wide operating temperature range, and environmental protection. At present, lithium-ion batteries have become the preferred power source for electronic products such as notebook computers, mobile phones, digital cameras, flashlights, etc.; ternary materials are currently one of the main components of the positive electrode of lithium-ion batteries. The traditional synthesis of ternary materials currently mainly includes high-temperature solid-phase method, low-heat solid-phase method, sol-gel method, co-precipitation method, etc.; but the material obtained by the solid-phase method is not uniform in phase and particle si...

AI Technical Summary

Problems solved by technology

However, the existing problems of the automatic centrifuge to realize the ternary material filtration and washing process are: firstly, the technical parameters of the automatic centrifuge are limited; the automatic centrifuge with a wide range of industrial applications has a rotor diameter of 1250mm and 1500mm, and the theoretical maximum processing capacity is A single batch is about 500kg, and the processing capacity is small

Secondly, the washing method is backward and the washing effect is poor; the automatic centrifuge washing method belongs to the displacement washing. When the thickness of the filter cake on the circumferential drum surface is thick, the washing liquid needs to be rinsed from the inside to the outside. The washing time is long and the washing liquid is consumed. The amount of use is large, and the washing of materials is not uniform

Again, the power consumption of a single machine is relatively large; the automatic centrifuge with a rotor diameter of 1250mm is equipped with a power of 22kW, and there are alternating speed-up and speed-down during operation, which consumes a lot of power

Finally, the production characteristics of the ternary material itself lead to a large amount of residual material; and the ternary material is produced intermittently batch by batch. After the production of the previous batch, the whole machine needs to be cleaned immediately to avoid the waste of the previous batch in the drum. The residual material of the material affects the quality of the finished product of the subsequent batch of materials. The traditional cleaning operation requires personnel to open the machine cover, manually clean up or even drill into a semi-closed automatic centrifuge for cleaning, which is time-consuming, laborious and less safe. At the same time, the cleaning effect obviously not as expected

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