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Pulverizer special for lithium battery cathode material and closed-loop cyclic pulverizing system of pulverizer

A positive electrode material and closed-circuit cycle technology, applied in the field of material crushing, can solve the problems of low crushing efficiency, high energy consumption of airflow crushing, and high water intake, etc., to achieve good crushing effect, controllable oxygen content, and low water intake Effect

Inactive Publication Date: 2016-04-06
山东埃尔派粉体科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But jet milling has high energy consumption and low crushing efficiency
Compared with mechanical pulverization, it has great advantages in terms of energy consumption and efficiency, but this type of equipment currently on the market is not suitable for pulverizing the above-mentioned oxidizable, flammable, and explosive substances, and the pulverization system adopts open-circuit production , more water intake

Method used

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  • Pulverizer special for lithium battery cathode material and closed-loop cyclic pulverizing system of pulverizer
  • Pulverizer special for lithium battery cathode material and closed-loop cyclic pulverizing system of pulverizer
  • Pulverizer special for lithium battery cathode material and closed-loop cyclic pulverizing system of pulverizer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Such as figure 1 As shown, the special pulverizer for lithium battery positive electrode materials includes a pulverizer casing 11 installed on the frame. A rotating shaft 12 is arranged inside the pulverizer casing 11. A shaft sleeve 123 is set on the lower part of the shaft 12, and a pulverizing disc 143 is installed on the shaft sleeve. On 123; Grading impeller 144 installs rotating shaft 12 tops. The rotating shaft 12 is connected to the main shaft of the motor, and the motor is electrically connected to a frequency converter, and the speed of the motor is adjusted by the frequency converter to achieve the purpose of adjusting the size of the crushed particles.

[0023] The interior of the pulverizer shell 11 is provided with a partition 13, which divides the inside of the casing into a pulverization chamber 14 and an air intake chamber 15. The center of the partition 13 is provided with a communicating hole for air intake and the passage of the rotating shaft 12; ...

Embodiment 2

[0035] Such as image 3 As shown, in this embodiment, different from Embodiment 1, there are two rotating shafts, an upper rotating shaft 121 and a lower rotating shaft 122, in the crushing chamber 14, the crushing disc 143 is installed on the lower rotating shaft 122, and the classifying impeller 144 is installed on the upper rotating shaft 121. The upper shaft 121 is connected to the main shaft of the pulverizing motor, and the lower shaft 122 is connected to the grading motor. The pulverizing motor and the grading motor are each electrically connected to a frequency converter, and the speed of the motor is changed by the frequency converter to realize the adjustment of the particle size of the crushed material and the particle size of the classifier. Purpose.

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Abstract

The invention discloses a pulverizer special for a lithium battery cathode material and a closed-loop cyclic pulverizing system of the pulverizer. The system comprises the pulverizer special for the lithium battery cathode material; a feeding device is connected to a feeding pipe of the pulverizer, and a discharging pipe is sequentially connected with a cyclone collector, a pulse dust remover and an induced draft fan through a connecting pipeline; an outlet of the induced draft fan is connected to an air inlet pipe through the connecting pipeline, and an air inlet of the induced draft fan is provided with an inert gas input pipeline in a parallel-connection manner; and an inert gas source is connected to the inert gas input pipeline. The pulverizer has the advantages of a mechanical pulverizer and advantages of a gas flow pulverizer, the whole system carries out sealed pulverizing, the inert gas can be recycled, the intake water is little, the noise is low, the production process is clean and environment-friendly, collection and recycling of the inert gas can be achieved, the water intake of the whole system is little, and the oxygen content is controllable. According to the pulverizer and the pulverizing system of the pulverizer, under the condition that the inert gas does not need to be inflated for protection, air recycling can be achieved, and the water intake can be reduced to the maximum extent.

Description

technical field [0001] The invention relates to the technical field of material pulverization, in particular to a special pulverizer for positive electrode materials of lithium batteries and a closed-circuit circulation pulverization system thereof. Background technique [0002] There are many materials on the market today that require inert gas protection or minimize moisture gain during crushing. For example, lithium battery positive electrode materials mainly include lithium cobaltate, lithium manganese oxide, ternary materials, lithium iron phosphate, etc. These lithium battery positive electrode materials are mostly airflow crushed when crushed, and are easily oxidized, flammable, and flammable when crushed. Explosive substances can be protected by inert gas to avoid safety accidents and reduce water intake. However, jet milling has high energy consumption and low crushing efficiency. Compared with mechanical pulverization, it has great advantages in terms of ener...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B02C21/00B02C23/34
CPCB02C21/00B02C23/34
Inventor 张景杰贾文浩张景宝
Owner 山东埃尔派粉体科技股份有限公司
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