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Method and device for desulfurizing expandable acidified graphite

A technology of expanded graphite and desulfurization device, applied in directions such as graphite, can solve the problems of high cost and large pollution, and achieve the effect of improving quality, reducing sulfur content and reducing cost

Active Publication Date: 2014-05-14
湖北联投恒达石墨有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the prior art, the method of improving the preparation process and drying after washing is usually used to reduce the sulfur content in the finished product, which leads to high cost and large pollution

Method used

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  • Method and device for desulfurizing expandable acidified graphite
  • Method and device for desulfurizing expandable acidified graphite
  • Method and device for desulfurizing expandable acidified graphite

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Such as figure 2 Among them, a device used in the above method, a filter screen 3 is provided between the feed bin 1 and the discharge port 2, the feed bin 1 and the discharge port 2 are connected, and the filter screen 3 is located at the inlet The part that communicates between the silo 1 and the outlet 2. A vacuum device 4 is provided on one side of the filter screen 3 , the aperture of the filter screen 3 is smaller than the particle size of the expanded graphite material, and the filter screen 3 is installed on the transmission device 5 . The expanded graphite material is blown into the upper feeding bin 1 of the device after being expanded at high temperature; the expanded graphite material is adsorbed on the filter screen 3 by the vacuum device 4 at the lower part of the filter screen 3 through suction; the filter screen 3 installed on the transmission device 5 Move forward at a certain speed, and transport the expanded graphite material after sulfur reduction ...

Embodiment 2

[0043] Such as image 3 with Figure 4 Among them, a device used in the above method, a filter screen 3 is provided between the feed bin 1 and the discharge port 2, the feed bin 1 and the discharge port 2 are connected, and the filter screen 3 is located at the inlet The part that communicates between the silo 1 and the outlet 2. One side of the filter screen 3 is provided with a vacuum device 4 and a blower device 7. The aperture of the filter screen 3 is smaller than the particle size of the expanded graphite material. The filter screen 3 is installed on the rotating shaft 6, and the rotation of the rotating shaft 6 drives the filter screen. 3 rotates accordingly.

[0044] The expanded graphite material is blown into the device feeding bin 1 in this example after being expanded at high temperature; the expanded graphite material is sucked on the filter screen 3 by the upper vacuum device 4; Rotating at high speed, the expanded graphite material after sulfur reduction is s...

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Abstract

The invention relates to a device for desulfurizing expandable acidified graphite. A filter screen is arranged between a feed bin and a discharge open. A vacuum pumping device and a blowing device are arranged on an upper part of the filter screen. The vacuum pumping device is arranged at the feed bin side, and the blowing device is arranged at the discharge open side. The aperture of the filter screen is less than the grain size of the expandable graphite. The filter screen is installed on a rotating shaft and is driven to rotate along with the rotation of the rotating shaft. The feed bin and the discharge open are communicated. The filter screen is arranged at part where the feed bin and the discharge open are communicated. Compared with the prior art, the method and device provided by the invention eliminates the steps of water washing and drying, can effectively reduce the sulfur content in the finished expandable acidified graphite product, lowers the cost, enhances the work efficiency and improves the quality of the expanded graphite product.

Description

technical field [0001] The invention relates to the field of preparation of expandable graphite, in particular to an expandable acidified graphite sulfur reduction and desulfurization method and device for reducing the sulfur content in expandable acidified graphite. Background technique [0002] As a non-metallic material, graphite is widely used in many fields, especially its unique characteristics play an irreplaceable role in other materials in the fields of sealing, heat conduction and heat dissipation. [0003] To expand natural graphite at high temperature, it is necessary to intercalate substances between the sheets to obtain expandable graphite. The current practice is: in a strongly oxidizing environment, intercalation treatment of acid radical ions is performed between the graphite flakes, so that the acid radical ions are fully inserted between the graphite flakes. Natural graphite after intercalation of acid radical ions is often called acidified graphite, that...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B31/04C01B32/20
Inventor 易万福
Owner 湖北联投恒达石墨有限公司