An automatic batching method and a ternary precursor production method for its application

A technology of automatic batching and raw materials, applied in the direction of electrode manufacturing, etc., to achieve the effects of stable system control, precise control, and improved product consistency

Active Publication Date: 2021-10-01
乳源东阳光新能源材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved in the present invention is to overcome the defects and deficiencies in the accuracy and stability of the metal salt solution prepared by the existing ternary precursor material, and provide an automatic batching method, the metal salt solution preparation of the method is automated, reducing labor The operation is difficult, and the batching process can be accurately controlled. The concentration of the metal salt solution and the proportion of the main element content fluctuate very little, and there is no need to monitor the metal salt solution by ICP detection and precipitation titration detection for each batch, which improves The overall efficiency and quality stability of the batching process will be saved in real time in the DCS log of the batching data, which meets the requirements of the integration system of the enterprise and reduces the personal injury of the environment and personnel during the process

Method used

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  • An automatic batching method and a ternary precursor production method for its application
  • An automatic batching method and a ternary precursor production method for its application
  • An automatic batching method and a ternary precursor production method for its application

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Embodiment 1

[0034] An automatic batching method, comprising the steps of:

[0035] S1. The raw materials are dissolved respectively: the nickel sulfate raw material is passed through the vibrating screen at a constant speed by the unpacking station and enters the nickel sulfate raw material dissolving tank, the automatic batching program is opened on the DCS interface, and the mass percentage of the solution of the concentrated nickel sulfate is set to 9% (multiple times The corresponding specific gravity at 45°C is 1.2192) in the small test test. The nickel content of nickel sulfate input is 22.15%, and the weight of nickel sulfate input is 6000kg. The automatic batching program of the DCS configuration program calculates according to the corresponding calculation formula and needs to add water 8767kg, actually add 99.7% of water first to get 8740kg, the temperature of the whole process is controlled at 45°C, the stirring speed is 60-80rpm, and stirred for 2.5h. After the time is up, the ...

Embodiment 2

[0039] An automatic batching method, comprising the steps of:

[0040] S1. Raw materials are dissolved separately: the incoming cobalt sulfate, manganese sulfate, and nickel sulfate are sampled and tested to obtain the main element content and impurity content. The impurity content is generally controlled at a low level, as shown in Table 1:

[0041] Table 1

[0042]

[0043] First add a certain amount of pure water or hot water to each raw material dissolution tank, start low-speed stirring, and then pass the qualified cobalt sulfate, manganese sulfate, and nickel sulfate raw materials through the unpacking station, pass through the vibrating screen, and then add them to their respective dissolution tanks , open the automatic batching program on the DCS interface, set the mass percentage of the concentrated nickel sulfate solution to 9% (the corresponding specific gravity is 1.2192 at 45°C measured by multiple small tests and tests), and input the nickel content value of n...

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Abstract

The invention provides an automatic batching method and a ternary precursor production method applied thereto. The automatic batching method includes the following steps: the raw materials are dissolved separately, and the specific gravity is measured, and the DCS calculates the corresponding weight according to the measured value and the set specific gravity to obtain the water to be replenished, and then automatically replenishes the water, and prepares the raw material liquid with the set specific gravity; Add the three kinds of raw material liquids into the batching device, according to the ratio and concentration of the metal salt liquid to be prepared, control the quality of the three raw material liquids and water added through DCS, stir evenly, and control the temperature to obtain the metal salt solution with the set ratio . The automatic batching method of the present invention dissolves each raw material separately, the fluctuation and relative error of the main content of the raw material and the impurity content are small, and the mass percentage is controlled according to the specific gravity of the raw material liquid, the control is more accurate and stable, and there is no need for negative pressure pipeline transportation, reducing Energy consumption, to maximize the accuracy and stability of ingredients.

Description

technical field [0001] The present invention relates to the technical field of ternary precursor preparation, and more specifically, to an automatic batching method and a ternary precursor production method for its application. Background technique [0002] At present, there are two methods for preparing metal salt solution in the production of ternary precursor. One is to manually add a certain weight ratio of nickel sulfate, cobalt sulfate, and manganese sulfate to the batching tank, then add a certain amount of pure water, mix and stir, and then perform ICP and chemical titration detection. The main element ratio and After the concentration is within the acceptable range of control, it is poured into the storage tank, and if it is unqualified, it will be fed until it is qualified. The other is to use pipeline transportation equipment to pump nickel sulfate, cobalt sulfate, and manganese sulfate raw materials to the metering bin, and then screw them to the preparation tan...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/04
CPCH01M4/04Y02E60/10
Inventor 李喜张军李鹏飞首卫文丘吉祥李剑锐
Owner 乳源东阳光新能源材料有限公司
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