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A device and method for purifying electrolytic manganese dioxide

A technology of electrolytic manganese dioxide and discharge port, applied in electrochemical generators, circuits, electrical components, etc., can solve the problems affecting the quality of electrolytic manganese dioxide, poor battery cycle performance, etc., to improve cycle performance, purity high effect

Active Publication Date: 2017-02-08
WUXI JEWEL POWER & MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] Aiming at the defect in the prior art that the impurity content in electrolytic manganese dioxide is relatively high, which affects the quality of electrolytic manganese dioxide and leads to poor cycle performance of the battery, the present invention provides a method for purifying electrolytic manganese dioxide method

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  • A device and method for purifying electrolytic manganese dioxide
  • A device and method for purifying electrolytic manganese dioxide

Examples

Experimental program
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Effect test

Embodiment 1

[0036] First, the jaw crusher 10 is turned on, and the electrolytic manganese dioxide of the crude product block is added to the feed port 101 of the jaw crusher, and the jaw crusher 10 coarsely crushes the electrolytic manganese dioxide of the crude product block. It is 120kg / h, and the electrolytic manganese dioxide after coarse crushing is transferred from the first outlet 102 of the jaw crusher to the first feeding bin 111 of the ceramic column crusher 11 through the conveyor belt, and then the ceramic column crusher 11 The electrolytic manganese dioxide is pulverized, and the feeding speed of this process is 140kg / h. The electrolytic manganese dioxide comes out from the second discharge port 112 of the ceramic column pulverizer 11 and is transported to the second feeding bin 121 of the ball mill 12 through a stainless steel pipeline. In the ball mill 12, add deionized water equal to the weight of the electrolytic manganese dioxide at the same time, the ball mill 12 ball mi...

Embodiment 2

[0038] First, the jaw crusher 10 is turned on, and the electrolytic manganese dioxide of the crude product block is added to the feed port 101 of the jaw crusher, and the jaw crusher 10 coarsely crushes the electrolytic manganese dioxide of the crude product block. 160kg / h, the electrolytic manganese dioxide after coarse crushing is sent from the first discharge port 102 of the jaw crusher to the first feeding bin 111 of the ceramic column crusher 11 through the conveyor belt, and then the ceramic column crusher 11 The electrolytic manganese dioxide is pulverized, and the feeding speed of this process is 160kg / h. The electrolytic manganese dioxide comes out from the second outlet 112 of the ceramic column pulverizer 11 and is transported to the second feeding bin 121 of the ball mill 12 through a stainless steel pipeline. In the ball mill 12, add deionized water equal to the weight of the electrolytic manganese dioxide at the same time, the ball mill 12 ball mills the electroly...

Embodiment 3

[0040]First, the jaw crusher 10 is turned on, and the electrolytic manganese dioxide of the crude product block is added to the feed port 101 of the jaw crusher, and the jaw crusher 10 coarsely crushes the electrolytic manganese dioxide of the crude product block. 140kg / h, the coarsely crushed electrolytic manganese dioxide is transferred from the discharge port 102 of the jaw crusher to the first feeding bin 111 of the ceramic column grinder 11 through the conveyor belt, and then the ceramic column grinder 11 is used for electrolysis Manganese dioxide is pulverized, and the feed rate of this process is 150kg / h, and electrolytic manganese dioxide comes out from the discharge port 112 of ceramic column pulverizer 11 and is transported in the second feeding bin 121 of ball mill 12 through stainless steel pipeline, to the ball mill. Add deionized water equal to the weight of electrolytic manganese dioxide in 12 at the same time, and ball mill 12 ball mills electrolytic manganese d...

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Abstract

The invention provides a device and a method for purifying electrolytic manganese dioxide. The device is provided with a jaw crusher, a ceramic column crusher, a ball mill and a belt type vacuum filter in sequence from top to bottom, wherein the jaw crusher is provided with a feeding port and a first discharging port; the first discharging port is communicated with the ceramic column crusher; the ceramic column crusher is provided with a feeding bin and a second discharging port; the second discharging port is communicated with the ball mill; the ball mill is provided with a second feeding bin and a third discharging port; the third discharging port is communicated with the belt type vacuum filter; and the belt type vacuum filter is provided with a feeding bin. The method comprises the steps of adding the electrolytic manganese dioxide in the jaw crusher; introducing electrolytic manganese dioxide to the ceramic column crusher; introducing the electrolytic manganese dioxide in the ball mill; adding equivalent deionized water; and introducing the electrolytic manganese dioxide to the belt type vacuum filter to obtain high-quality electrolytic manganese dioxide. The device and method can increase purity of the electrolytic manganese dioxide.

Description

technical field [0001] The invention relates to the technical field of preparation of new energy materials, in particular to a device and method for purifying electrolytic manganese dioxide. Background technique [0002] Lithium manganese oxide is a relatively common positive electrode material for lithium-ion batteries. At present, the usual production process is to use commercially available electrolytic manganese dioxide (EMD), lithium carbonate, and modifiers to mix evenly, then burn at 850-900°C, and then crush it to the customer. The required particle size distribution is the finished product. The composition of this type of lithium manganate is roughly as in Table 1: [0003] Table 1: EMD synthetic lithium manganate composition analysis: [0004] [0005] It can be seen from Table 1 that the impurity content of Na, K, Mg, Ca and other impurities in this material is relatively high, which will affect its cycle performance after being made into a battery; [0006]...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/50
CPCC22B7/00H01M4/502H01M10/0525Y02E60/10
Inventor 郝冬清
Owner WUXI JEWEL POWER & MATERIALS