Mixing device for lithium battery positive electrode or negative electrode preparation materials

A technology for mixing devices and lithium batteries, which is applied in the direction of combined devices, battery electrodes, mixers, etc., can solve the problems of inability to realize continuous operation, large equipment footprint, and low degree of automation, so as to solve the problems of electrochemical performance degradation and automation High degree, the effect of improving production efficiency

Active Publication Date: 2012-06-27
济宁市无界科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a mixing device for preparing raw materials for lithium battery positive or negative electrodes, which solves the defects of low automation of the original equipment, large equipment footprint, and inability to realize continuous operation. It can achieve high efficiency, low energy consumption and continuous mixing. Production

Method used

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  • Mixing device for lithium battery positive electrode or negative electrode preparation materials
  • Mixing device for lithium battery positive electrode or negative electrode preparation materials
  • Mixing device for lithium battery positive electrode or negative electrode preparation materials

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] The particle size is 0.1-100 μ m lithium carbonate and manganese dioxide are added to the fluidized bed 1 by the first feeder 2-1 and the second feeder 2-2 respectively, and the first feeder 2-1 and the second feeder The feeder 2-2 is symmetrically arranged, and the feeding direction is all towards the geometric center of the fluidized bed 1, see figure 2 . Nitrogen is introduced into the bottom A of the fluidized bed 1, and the oxygen-containing compounds of lithium carbonate and manganese entering the fluidized bed 1 are fluidized and fully mixed in the fluidized bed 1, and after passing through the vibrating motor 3 and the spiral stirring blade 4, enter the sedimentation Room 8. The fluidized gas is discharged from the mixing device by the fan 7 after passing through the cyclone separator and the bag filter 6. The oxygen-containing compound mixture of lithium carbonate and manganese that has been mixed is discharged at the material outlet B of the settling chambe...

Embodiment 2

[0017] The particle size is 0.1-100 μ m lithium carbonate, titanium oxygen-containing compounds are respectively fed into the fluidized bed 1 from the first feeder 2-1 and the second feeder 2-2, the first feeder 2-1 and the second feeder The second feeder 2-2 is symmetrically arranged, and the feeding direction is all toward the geometric center of the fluidized bed 1, see figure 2 . Nitrogen is introduced into the bottom A of the fluidized bed 1, and the lithium carbonate and titanium oxygen-containing compounds entering the fluidized bed 1 are fluidized and fully mixed in the fluidized bed 1, and after passing through the vibrating motor 3 and the spiral stirring blade 4, enter the sedimentation Room 8. The fluidized gas is discharged from the mixing device by the fan 7 after passing through the cyclone separator and the bag filter 6. The mixed lithium carbonate and titanium oxygen-containing compound mixture are discharged from material outlet B.

Embodiment 3

[0019] Add lithium carbonate, iron phosphate (or iron phosphite) and reducing agent with a particle size of 0.1-100 μm from the first feeder 2-1, the second feeder 2-2 and the third feeder 2-3 respectively In the fluidized bed 1, the first feeder 2-1, the second feeder 2-2 and the third feeder 2-3 are uniformly arranged, and the feed direction deviates from the geometric center of the fluidized bed 1, see image 3 . Nitrogen is introduced into the bottom A of the fluidized bed 1, and the lithium carbonate, iron phosphate (or iron phosphite), and reducing agent entering the fluidized bed 1 are fluidized and fully mixed in the fluidized bed 1, and then passed through the vibrating motor 3 and spiral stirring After the blade 4, it enters the settling chamber 8. The fluidized gas is discharged from the mixing device by the fan 7 after passing through the cyclone separator and the bag filter 6. The mixed lithium carbonate, iron phosphate (or iron phosphite), and reducing agent mi...

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Abstract

The invention relates to a mixing device for lithium battery positive electrode or negative electrode preparation materials. The device is mainly composed of a fluidized bed, spiral feeders, vibration motors, spiral agitating blades, a spiral agitating motor and a settling chamber. Specifically, the spiral feeders are arranged at the lower parts of the fluidized bed; the middle part of the fluidized bed is provided with the vibration motors; the upper part inside the fluidized bed is equipped with the spiral agitating blades, the top of which is in connection with the spiral agitating motor; the top of the fluidized bed is connected to the settling chamber, the inside of which is provided with a cyclone separator and bag-type dust collector that is connected to a fan outside the settling chamber; the lower end of the fluidized bed is provided with an air vent, by which fluidized air that does not react with the lithium battery positive electrode or negative electrode preparation materials is introduced, and the lower end of the settling chamber is provided with a material outlet. The device of the invention is characterized by strong mixing ability, fast speed, low energy consumption, high degree of automation, and ability of sealing operation, so that it can better adapt to the requirements of large-scale industrial production.

Description

technical field [0001] The invention relates to a mixing device for preparing raw materials for positive or negative electrodes of lithium batteries, in particular to a mixing device for preparing raw materials for positive or negative electrodes of lithium batteries using a solid-phase synthesis method. Background technique [0002] The production of lithium-ion batteries is an emerging industry with broad prospects for development. Solid-phase synthesis is an important method for preparing positive (negative) electrode materials for lithium-ion batteries. Taking the preparation process of lithium manganate cathode material as an example, Li 2 CO 3 with MnO 2 The raw material particles are mixed and calcined at a high temperature of 500-900°C for several hours to obtain lithium manganate. LiCoO 2 The preparation process of the positive electrode material is taken as an example, lithium carbonate Li 2 CO 3 and cobalt oxides (such as cobalt carbonate CoCO 3 , basic co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01F13/10B01F15/00B01F15/02B01D50/00H01M4/139
CPCY02E60/122Y02E60/10
Inventor 蒋永乐向文国王岳段钰锋蒋永善贺兆书李俊峰
Owner 济宁市无界科技有限公司
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