Preparation method and system of positive electrode material precursor

Abstract

The invention discloses a preparation method and system of a positive electrode material precursor. The preparation method of the positive electrode material precursor comprises the following steps of: supplying a raw material containing a metal salt solution for preparing the positive electrode material precursor to a reactor; promoting the raw material to react to generate a positive electrode material precursor, and continuing to provide the metal salt solution for ensuring that the positive electrode material precursor grows to meet a set requirement for the reactor in the growth process of the positive electrode material precursor; carrying out solid-liquid separation filtering on the solution in the reactor through a filtering element positioned in the reactor so as to maintain the liquid amount in the reactor in a range required by the reaction; and when the positive electrode material precursor grows to meet the set requirement, discharging the positive electrode material precursor.

Description

technical field [0001] The relevant part of the description of the present invention relates to the filter of the system that realizes the reaction and filtration concentration, specifically relates to the method of making the reaction raw materials undergo physical and / or chemical reactions and the reaction product is filtered and concentrated, especially relates to the preparation of the ternary material precursor The raw materials are reacted and the ternary material precursor is filtered and concentrated. Background technique [0002] In the processing flow that needs to react the reaction raw materials to obtain the reaction product first, and then filter and concentrate the reaction product, the reaction equipment used for reaction and the filter concentration equipment used for filter concentration are usually two independent of each other. different devices. For example, in a preparation process of a lithium-ion battery ternary material precursor, the reactor and th...

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Problems solved by technology

[0003] The object of the present invention is to provide the preparation method that is used to realize the positive electrode material precursor of reaction and filtration concentration, to solve owing to belong to two mutually independent different equipments between the reaction equipment for reaction and the filtration concentration equipment used for filtration concentration However, the technical problems brought about by the large number of equipment and the large area occupied by the equipment

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