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A continuous lithium sinking tank and battery-grade lithium carbonate continuous lithium sinking process

A technology of lithium carbonate and precipitation lithium, applied in the direction of lithium carbonate;/acid carbonate, solution crystallization, etc., can solve the problems of low production efficiency, long process route, large investment, etc., to improve production efficiency and shorten the Process flow, the effect of reducing investment and production costs

Active Publication Date: 2019-03-22
SHANDONG LUBEI ENTERPRISE GROUP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The invention discloses a continuous lithium sinking tank and a battery-grade lithium carbonate continuous lithium sinking process. The equipment and lithium sinking process of the invention solve the intermittent production and secondary lithium sinking process in this industry, which not only guarantees product quality but also can Realize continuous lithium deposition, solve the problems of low production efficiency, long process route and large investment, greatly improve production efficiency, shorten the process flow, and reduce investment and production costs

Method used

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  • A continuous lithium sinking tank and battery-grade lithium carbonate continuous lithium sinking process
  • A continuous lithium sinking tank and battery-grade lithium carbonate continuous lithium sinking process

Examples

Experimental program
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Effect test

Embodiment 1

[0024] A continuous lithium sinking tank, comprising a lithium sinking tank 1 and a feeding tank 8 connected by pipelines, wherein, the lithium sinking tank 1 includes adjacent tanks A 4 and tank B 6, and the tank A 4 and tank B pass through The partition 14 is separated, and the partition 14 is provided with two ports 5, and the two ports 5 are respectively located on the upper and lower parts of the partition 14, and the A tank 4, the B tank 6 and the feeding tank 8 are all provided with stirring The top of tank A 4 is provided with a concentrated lithium sulfate purification solution inlet 13, a sodium absorption mother liquor inlet 12, and a soda liquor inlet 11, the upper part of the side wall of tank A 4 is provided with a steam inlet 10, and the lower part of the side wall of tank B 6 is provided with a condensed water outlet 7. An overflow port is provided on the upper part of the side wall of the B tank 6, and the pipe connected to the feeding tank 8 is arranged on the...

Embodiment 2

[0030] The continuous lithium sinking tank adopts the structure of Example 1, and in addition: the height-to-diameter ratio of tank A 4 and tank B 6 is 1.5:1, the upper and lower parts of the two tanks are connected to a 1 / 4 tank diameter port 5, and the upper port 5 The position is lower than that of the overflow port of B tank 6. Both A tank 4 and B tank 6 are single-layer stirring paddles, the blade length is 2 / 3 of the tank diameter, and the rotating speed is 50 rpm.

[0031] The feed pipe that has gone to feed trough 8 is installed in B groove 6 apart from groove top 300mm place, and feed pipe diameter 300mm. Soda lye pipe 15 enters liquid level 400mm in A groove 4, and 4 are evenly distributed. There are φ500mm steam outlets 10 at the top of tank A 4 and tank B 6, the height-to-diameter ratio of the feeding tank 8 is 1:1, and the stirring blade speed of the feeding tank 8 is 50r / min.

[0032] A battery-grade lithium carbonate continuous lithium sinking process, compris...

Embodiment 3

[0043] The continuous lithium sinking tank adopts the structure of Example 1, and in addition: the height-to-diameter ratio of tank A 4 and tank B 6 is 1.0:1, and the upper and lower parts of the two tanks are connected to a port 5 with a diameter of 1 / 4, and an upper port 5 The position is lower than that of the overflow port of B tank 6. Both A tank 4 and B tank 6 are single-layer stirring paddles, the blade length is 2 / 3 of the tank diameter, and the rotating speed is 70 rpm.

[0044] The feed pipe that has gone to feed trough 8 is installed in B groove 6 apart from groove top 300mm place, and feed pipe diameter 300mm. Soda lye pipe 15 enters liquid surface 500mm in A groove 4, and 4 are evenly distributed. There are φ500mm steam outlets 10 at the top of tank A 4 and tank B 6, the height-to-diameter ratio of the feeding tank 8 is 1:1, and the stirring blade speed of the feeding tank 8 is 60r / min.

[0045] A battery-grade lithium carbonate continuous lithium sinking proces...

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Abstract

The invention discloses a continuous lithium sedimentation tank and a cell-grade lithium carbonate continuous lithium sedimentation process. The continuous lithium sedimentation tank comprises a lithium sedimentation tank and a material passing tank which are connected by a material passing pipe, wherein the lithium sedimentation tank comprises a tank A and a tank B which are separated by a separating plate, the separating plate is provided with an upper through hole and a lower through hole, and a stirrer is arranged in each of the tank A, the tank B and the material passing tank; during lithium sedimentation reaction, firstly pure alkali liquor is sent into the tank A, steam is introduced for heating, stirring is started, and then concentrated lithium sulfate purified solution is added.The equipment and the lithium sedimentation process disclosed by the invention solve the problem caused by intermittent production and a secondary lithium precipitation process in the industry all thetime, not only is product quality guaranteed, but also continuous lithium sedimentation can be realized, the problems of low production efficiency, long process route and great investment are solved,the production efficiency is greatly improved, the technological process is shortened, and investment and production cost are lowered.

Description

technical field [0001] The invention discloses a continuous lithium precipitation process for producing battery-grade lithium carbonate, specifically a process for producing battery-grade lithium carbonate by a spodumene-sulfuric acid method. The lithium process greatly improves production efficiency, shortens the process flow, and reduces investment and production costs. Background technique [0002] Due to the current rapid development of new materials and new energy industries, the demand for high-end lithium products is strong, especially in the power battery and automotive industries, which has become the main growth point of the lithium product industry. -20% growth rate, especially the rapid growth rate of battery grade and high-purity lithium carbonate. At present, most of the battery-grade lithium carbonate production in my country adopts the spodumene-sulfuric acid method. The process is high-temperature transformation of spodumene concentrate, grinding, acidifica...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D9/02C01D15/08
CPCY02E60/10
Inventor 吕天宝武文焕冯怡利郭延民
Owner SHANDONG LUBEI ENTERPRISE GROUP