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Preparation method for vertical type continuous graphitizing furnace carbon black brick

A technology of graphitization furnace and carbon black, which is applied in the field of preparation of carbon black bricks of vertical continuous graphitization furnace, which can solve the problems of unfavorable total power of graphitization furnace, smaller furnace resistance, and smaller distance, so as to facilitate production and operation Parameter adjustment, avoiding dead furnace phenomenon, and the effect of total power improvement

Inactive Publication Date: 2012-11-21
JIANGSU SURUN HIGH CARBON
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main equipment for the continuous production process of high-purity graphite carbon materials is a vertical graphitization furnace, but the furnace core carbon bricks in the existing vertical graphitization furnace usually have the problem of low resistance value, especially when the structural type of the furnace is modified. After the transformation, the electrodes originally placed at the lower part of the furnace are changed to be placed on the side of the furnace. Since the side electrodes are directly connected to the furnace core, the furnace core becomes a conductive pole, so the distance between the two electrodes is greatly reduced, making the entire furnace The resistance becomes smaller, which is not conducive to increasing the total power of the graphitization furnace, so it is not conducive to the adjustment of the production and operation parameters of the graphitization furnace

Method used

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Effect test

Embodiment 1

[0014] A method for preparing carbon black bricks in a vertical continuous graphitization furnace. The preparation steps are as follows: carbon black and pitch are mixed in a ratio of 1.7:1, and then heated and kneaded in a kneader at a temperature of 180°C. The press is pressed (pressed into a certain shape) with a pressure of 1000KN, and then roasted in a roasting kiln at a roasting temperature of 800°C, and finally crushed. The particle size of the crushed mixture is 80 mesh, and the first stage can be obtained. Material; mix the first-stage material and asphalt in a ratio of 2.5:1, then heat and knead in a kneader at a temperature of 180°C, and then press the mold loaded with the mixture by a press at a pressure of 6000KN , and then roasted in a roasting kiln at a roasting temperature of 800°C, and finally kept at 800°C for 2 hours, and then left the kiln after it cooled naturally.

Embodiment 2

[0016] A method for preparing carbon black bricks in a vertical continuous graphitization furnace. The preparation steps are as follows: carbon black and pitch are mixed in a ratio of 2:1, and then heated and kneaded in a kneader at a temperature of 200°C. The press is pressed (pressed into a certain shape) with a pressure of 2000KN, and then roasted in a roasting kiln at a roasting temperature of 900°C, and finally crushed. The particle size of the crushed mixture is 100 mesh, and the first stage can be obtained. Material; mix the first-stage material and asphalt in a ratio of 3:1, then heat and knead in a kneader at a temperature of 200°C, and then press the mold loaded with the mixture by a press at a pressure of 8000KN , and then roasted in a roasting kiln at a roasting temperature of 1000 ° C, and finally kept at 1000 ° C for 5 hours, and then left the kiln after it cooled naturally.

Embodiment 3

[0018] A method for preparing carbon black bricks for a vertical continuous graphitization furnace. The preparation steps are as follows: carbon black and pitch are mixed in a ratio of 2.5:1, and then heated and kneaded in a kneader at a temperature of 250°C. The press is pressed (pressed into a certain shape) with a pressure of 3000KN, and then roasted in a roasting kiln at a roasting temperature of 950°C, and finally crushed. The particle size of the crushed mixture is 120 mesh, and the first stage can be obtained. Material; mix the first-stage material and asphalt in a ratio of 3.5:1, then heat and knead in a kneader at a temperature of 250°C, and then press the mold loaded with the mixture by a press at a pressure of 10,000KN , and then roasted in a roasting kiln at a roasting temperature of 1100 ° C, and finally kept at 1100 ° C for 8 hours, and then left the kiln after it cooled naturally.

[0019] Carbon black brick prepared by the method of the present invention and gr...

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Abstract

The invention discloses a preparation method for a vertical type continuous graphitizing furnace carbon black brick. The carbon black brick prepared by using the method provided by the invention has resistivity substantially higher than resistance values of graphitizing furnace core materials prepared by using conventional technology both at a room temperature and at a high temperature; thus, the resistance of a graphitizing furnace is greatly improved, the power of the graphitizing furnace is in an adjustable and controllable range, and in the process of production, regulation of all the process parameters can be flexibly carried out, thereby facilitating adjustment of production operating parameters of the graphitizing furnace.

Description

technical field [0001] The invention relates to a method for preparing carbon black bricks, in particular to a method for preparing carbon black bricks for a vertical continuous graphitization furnace. Background technique [0002] In the steelmaking and foundry industry, electric calcined anthracite, natural graphite, calcined petroleum coke, pitch coke, and carbon industry are generally used as resistance materials in the process of electrode graphitization as recarburization materials in China. Because these materials contain excessive amounts of harmful elements, especially impurities such as sulfur, nitrogen, and phosphorus, which seriously affect the quality of products and cannot meet production needs. At the same time, due to the low fixed carbon content and unstable quality of the above materials, they cannot be used as carbon negative electrode materials for a new generation of secondary lithium-ion batteries, friction materials for aircraft and high-speed trains, ...

Claims

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Application Information

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IPC IPC(8): C04B35/66C04B35/532C04B35/622
Inventor 陈新成朱葛秋林马宁
Owner JIANGSU SURUN HIGH CARBON
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