Tempering Adhesive

An adhesive and tempering technology, applied in the field of adhesives, can solve the problems of heavy unloading and feeding of employees, low coking value of pure medium-temperature asphalt, and low product density, so as to save feeding time and product density The effect of increasing and improving the coking value

Inactive Publication Date: 2011-12-21
SICHUAN GUANGHAN SHIDA CARBON
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The production of graphite electrodes in my country generally uses medium-temperature pitch as the binder. First, our company also uses pure medium-temperature pitch as the binder for electrode production before quenching and tempering the binder. Due to the low softening point of medium-temperature pitch, the The transportation is difficult, and the workload of employees unloading and adding materials is huge; secondly, due to the low coking value of pure medium-temperature asphalt itself, the density of the product after green compacting and roasting is low, which can only reach 1.58-1.60g / cm 3 between

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] A conditioning and tempering adhesive, which consists of 20% medium-temperature asphalt and 80% modified asphalt.

Embodiment 2

[0015] A conditioning and tempering adhesive, which consists of 30% medium-temperature asphalt and 70% modified asphalt.

Embodiment 3

[0017] The invention relates to a tempering adhesive, which is composed of 50% medium-temperature asphalt and 50% modified asphalt.

[0018] In the above formula, the ratio of the two components is mainly based on the parameter requirements of the mixture and adjusted within a corresponding range.

[0019] A method for preparing a tempered adhesive, which is carried out according to the following steps: after the medium-temperature asphalt and the modified asphalt are mixed evenly in proportion, they are added to a melting tank for melting and dehydration, and the heat-conducting oil is used for indirect heating, and the temperature is controlled at 140-220°C; Sampling and analysis after 48 hours shows that the moisture content is less than 0.2%, the softening point is 90°C to 100°C, the TI is ≥21%, and the coking value is ≥50%. After the mixture reaches all indicators, the modulation operation is completed.

[0020] When the asphalt adhesive of the present invention is adjust...

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PUM

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Abstract

The invention relates to a tempering adhesive, which belongs to the graphite electrode pitch adhesive. A tempering adhesive is composed of the following components by weight percentage: 20%-50% of medium-temperature asphalt, and 80%-50% of modified asphalt. It improves the coking value of the binder pitch, increases the yield of raw products after roasting by 1.5-4%, increases the density and strength of products by 1.5-3%, and reduces the labor intensity of operators.

Description

technical field [0001] The invention relates to an adhesive used for forming carbon products, especially a pitch adhesive used for producing graphite electrodes and a preparation method thereof. Background technique [0002] Coal tar pitch binder is one of the main raw materials for the production of carbon materials and carbon products. In the process of producing graphite electrodes or other carbon products, the coal tar pitch binder is melted and mixed with aggregate, formed, co-carbonized and graphitized. , made of carbon materials and carbon products. [0003] The production of graphite electrodes in my country generally uses medium-temperature asphalt as the binder. First, our company also uses pure medium-temperature asphalt as the binder for electrode production before quenching and tempering the binder. Due to the low softening point of medium-temperature pitch, summer Transportation is difficult, and the workload of employees unloading and adding materials is huge;...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B31/02
Inventor 张士公蒋利邓峰
Owner SICHUAN GUANGHAN SHIDA CARBON
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