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A kind of production device and technology of nickel-cobalt-manganese ternary hydroxide

A nickel-cobalt-manganese ternary hydrogen and oxide technology, applied in nickel compounds, inorganic chemistry, chemical instruments and methods, etc., can solve the problems of low production efficiency, unstable batch quality, high energy consumption, etc., and achieve high production efficiency , The effect of narrow product particle size distribution and low energy consumption

Active Publication Date: 2020-04-28
QINGYUAN JIAZHI NEW MATERIAL RES INST CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The preparation of nickel-cobalt-manganese ternary hydroxide is generally a single-reactor batch precipitation process. The nucleation, growth, and aging of the ternary hydroxide are all completed in the same reactor, and there is energy consumption during the implementation process. High, low production efficiency, unstable quality between batches, etc.
[0003] ZL201520250444.0 discloses a continuous reaction process of low-magnetic nickel-cobalt-manganese ternary hydroxide. The crystal nucleation, primary growth reaction, optimized growth reaction, and aging are carried out in four reactors respectively, realizing continuous production. , but the aging of this process is only carried out in the last reactor, and there is no aging process in the reactor in the middle process, because the particle size distribution of the precipitated nuclei overflowing from the first reactor is relatively wide, and the second and The crystal nuclei in the subsequent reactor grow on the original basis, resulting in a wider particle size distribution of the final product
[0004] ZL201520948647.7 discloses a continuous production process of nickel-cobalt-manganese ternary hydroxide: the nucleation of nickel-cobalt-manganese ternary hydroxide is intermittent production, after nucleation, the crystal nuclei are concentrated in a reactor, and then continuously Add it into the growth kettle, the growth kettle will grow the crystal nuclei, and overflow to the aging kettle after the particle growth is completed. This process realizes the semi-continuous production of nickel-cobalt-manganese ternary hydroxide, but the continuous Crystal nuclei, mixed with grown nuclei and overflowing to the aging tank, also lead to a wider particle size distribution of the final product

Method used

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  • A kind of production device and technology of nickel-cobalt-manganese ternary hydroxide

Examples

Experimental program
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Effect test

Embodiment 1

[0024] A nickel-cobalt-manganese ternary hydroxide production device includes three 1m3 identical reaction kettles, a discharge pump, a centrifuge and connecting pipes. The reaction kettle is a water-sealed closed tank reaction kettle with stirring and electric heater. The upper part is equipped with a feed liquid inlet and a gas inlet; each reaction kettle is equipped with an overflow port at 0.95H on the upper side wall and 0.15H on the lower side wall The feed ports are all set, and the overflow port of each reactor is connected to the feed port pipes of other reactors, and valves are set near the overflow ports on the pipes connecting the overflow ports to the feed ports of other reactors. The bottom of each reactor is provided with a slurry discharge port, which is connected to the discharge pump and the centrifuge through a pipeline, and the pipeline connecting the slurry discharge port of the reactor with the discharge pump is set near the slurry discharge port. The val...

Embodiment 2

[0032] Its equipment is basically the same as in Example 1, except that the reaction volume is 10 m³.

[0033] A production process of nickel-cobalt-manganese ternary hydroxide comprises the following steps.

[0034] (a) Add 0.8mol / L ammonia solution to each reactor as the bottom liquid, and the bottom liquid level will submerge the bottom stirring paddle.

[0035] (b) 1# Reactor is turned on and stirred, heated to 70 o After C, add reducing agent and protective gas, and add the metal solution with the total concentration of the three metal ions of nickel, cobalt, manganese and 2.0mol / L, 8.0mol / L sodium hydroxide solution, and 10.0mol / L ammonia solution into the 1# reaction kettle at the same time , to carry out the nucleation reaction, control the flow rate of molten metal to 50L / h, control the pH range of the mixed solution in the reactor to 12.0, and the total ammonia concentration to 0.8mol / L.

[0036] (c) When the 1# reactor begins to overflow, the overflow enters the 2...

Embodiment 3

[0041] Its equipment is basically the same as in Example 1, except that the reaction volume is 5 m³.

[0042] A production process of nickel-cobalt-manganese ternary hydroxide comprises the following steps.

[0043] (a) Add 0.5mol / L ammonia solution to each reactor as the bottom liquid, and the bottom liquid level will submerge the bottom stirring paddle.

[0044] (b) 1# reactor is turned on and stirred, heated to 55 o After C, add reducing agent and protective gas, and add the metal solution with a total concentration of three metal ions of nickel, cobalt and manganese of 1.5mol / L, 6.0mol / L sodium hydroxide solution, and 7.5mol / L ammonia solution into the 1# reaction kettle at the same time , to carry out the nucleation reaction, control the flow rate of molten metal to 25L / h, control the pH range of the mixed solution in the reactor to 11.0, and the total ammonia concentration to 0.5mol / L.

[0045] (c) When the 1# reactor begins to overflow, the overflow enters the 2# reacto...

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Abstract

The invention discloses a production device and technology of nickel-cobalt-manganese hydroxide. The production device mainly comprises closed vessel type reaction kettles, a discharging pump, a centrifugal machine and a connecting pipeline, an overflow hole is formed in the side wall of the upper part of each reaction kettle, a feeding hole is formed in the side wall of the lower part of each reaction kettle, and the overflow hole of each reaction kettle is connected with the feeding holes of other reaction kettles by virtue of pipelines. In the technology, overflow of the previous reaction kettle is taken as base solution of the next reaction kettle, ageing is carried out in the next reaction kettle, before continuous precipitation, an ageing process promotes wear off of large crystals in the base solution and growth of small crystal particles in the base solution, crystal particles begin to grow after overall tending to be uniform. Each reaction kettle of the production device of nickel-cobalt-manganese hydroxide has two functions, namely precipitation synthesis and ageing, each reaction kettle can overflow to other two reaction kettles, the overflow is aged and then is subjected to parallel flow precipitation and synthesis, and the production device of nickel-cobalt-manganese hydroxide has the advantages that end point granularity can be easily controlled and product size distribution is narrow.

Description

technical field [0001] The utility model belongs to the field of material wet synthesis, and in particular relates to a production device of nickel-cobalt-manganese ternary hydroxide and a process thereof. Background technique [0002] The preparation of nickel-cobalt-manganese ternary hydroxide is generally a single-reactor batch precipitation process. The nucleation, growth, and aging of the ternary hydroxide are all completed in the same reactor, and there is energy consumption during the implementation process. High, low production efficiency, unstable quality between batches and other issues. [0003] ZL201520250444.0 discloses a continuous reaction process of low-magnetic nickel-cobalt-manganese ternary hydroxide. The crystal nucleation, primary growth reaction, optimized growth reaction, and aging are carried out in four reactors respectively, realizing continuous production. , but the aging of this process is only carried out in the last reactor, and there is no agi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G53/00
CPCC01G53/006
Inventor 陈秋文定强付海阔吴理觉梁伟华张涛冉建军
Owner QINGYUAN JIAZHI NEW MATERIAL RES INST CO LTD
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