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Carbon material preparation method

A carbon material and dry material technology, applied in the field of carbon material preparation, can solve the problems of reduced air oxidative index, high residual ash, no better method for bulk density, etc., and achieves the effect of improving bulk density

Pending Publication Date: 2021-05-04
焦作钧菲津材科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The addition of remnants significantly increases the volume density of prebaked anodes, but the high ash content in remnants, especially the high content of sodium, will lead to a significant decrease in the air oxidation index, so the blending ratio of remnants is generally limited to 10% the following
In addition, only manufacturers supporting electrolytic aluminum have the conditions to mix anode residues. Most prebaked anode manufacturers have no source of anode residues, and there is no better way to increase the volume density

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0013] Taking the preparation of prebaked anodes as an example, the production steps of prebaked anodes include calcination of petroleum coke, medium crushing and screening of calcined petroleum coke, batching and mixing of dry materials, kneading after adding pitch, molding to obtain green bodies, and green body roasting Then get the prebaked anode. Among them, the batching of dry materials is to batch calcined petroleum coke and powder materials of different particle sizes according to the set formula. Roasting is to put the green body into the material box of the open ring roaster, cover the green body in the material box with filler, and then heat and roast. The function of the filler is to transfer heat and isolate air. At present, most manufacturers use calcined petroleum coke as filler. Based on the function of the filler, the filler is required to have certain air permeability and fluidity. After the calcined petroleum coke is used as a filler for many times, a large...

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PUM

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Abstract

The invention relates to a carbon material preparation method, which comprises a batching step and a roasting step, and a filler is added in the batching step; the filler is calcined petroleum coke and at least one roasting cycle is used as the filler in the roasting step. When the carbon material is prepared, the filler is added, so that the volume density of the carbon material can be obviously improved.

Description

technical field [0001] The invention relates to a method for preparing a carbon material, which belongs to the technical field of carbon. Background technique [0002] The volume density of carbon materials is a key physical and chemical index, which has a great impact on its performance, so manufacturers require to increase their volume density as much as possible when preparing carbon materials (such as graphite electrodes, carbon electrodes, prebaked anodes, etc.) ). The preparation of carbon materials generally uses petroleum coke as raw material. Petroleum coke is crushed and classified after high-temperature calcination, and then compounded according to the formula. After adding asphalt, it is kneaded to obtain a paste, the paste is formed to obtain a green body, and the green body is fired to obtain Finished or semi-finished products. [0003] In order to increase the bulk density, some high-power graphite electrodes are impregnated with asphalt under high pressure ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/52C04B35/622
CPCC04B35/52C04B35/622
Inventor 武艳丽
Owner 焦作钧菲津材科技有限公司