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Method for preparing crucible by hot-press cold-out one-step forming of regenerated graphite

A technology for regenerating graphite and crucible, applied in the field of graphite, can solve the problems of easy breakage, uneven structure, easy cracking, etc., and achieve the effect of increasing paste plasticity, increasing product strength, and preventing cracking and damage.

Active Publication Date: 2021-11-23
吉林科工碳业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide a method for preparing a crucible using regenerated graphite hot-pressed and cold-out one-time molding method, and improve the use of regenerated graphite The prepared crucible has an uneven structure, is easy to crack when used, and is easily damaged after being stressed or expanded

Method used

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  • Method for preparing crucible by hot-press cold-out one-step forming of regenerated graphite
  • Method for preparing crucible by hot-press cold-out one-step forming of regenerated graphite
  • Method for preparing crucible by hot-press cold-out one-step forming of regenerated graphite

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Embodiment 1

[0046] A method for preparing a crucible by hot-pressing and cooling regenerated graphite,

[0047] S1. Dry blending: make recycled graphite powder and graphitized petroleum coke particles into a dry material, pour it into a pretreated kneading pot for dry mixing, and dry mix for 40 minutes at a temperature of 120-130°C to obtain a dry blend;

[0048] Among them, the particle size of regenerated graphite powder is less than 0.5mm, accounting for 50% of the dry material mass;

[0049] The composition of graphitized petroleum coke particles is as follows: graphitized petroleum coke particles with a particle size of 0.5-4mm account for 25% of the dry material mass, and graphitized petroleum coke particles with a particle size of 4-8mm account for 25% of the dry material mass;

[0050] The pretreatment step is as follows: the kneading pot itself is externally heated by heat conduction oil, the heating temperature is 190-200°C, and the heat conduction oil is selected from L-QB300 o...

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Abstract

The invention provides a method for preparing a crucible by hot-press cold-out one-step forming of regenerated graphite, and particularly relates to a process method for a graphite crucible by hot-press cold-out one-step forming. The method specifically comprises the steps: preparing a dry material from regenerated graphite powder and graphitized petroleum coke particles, pouring the dry material into a mixing and kneading pot for dry mixing, adding an adhesive for wet mixing to prepare a paste material, directly pouring the paste material into a molding container in a heating state, pressurizing and shaping, immediately cooling after the density reaches the standard, quickly cooling and curing to prepare a green body, instantly heating the container, feeding into a mold, demolding, and roasting to obtain a finished product. In the method, through a hot-press cold-out one-step forming method, the problems that the crucible prepared by using the regenerated graphite as the raw material is non-uniform in structure, easy to crack during use and easy to damage after being stressed or expanded are effectively solved. The whole scheme is simple in process, material airing is not needed after mixing and kneading, the preparation process is simplified, high-pressure forming is not needed, and the effects of saving energy, reducing emission, reducing cost and improving efficiency are achieved.

Description

technical field [0001] The invention relates to the technical field of graphite, in particular to a process method for forming a graphite crucible at one time by hot pressing and cold out method. Background technique [0002] Graphite has a hexagonal crystal structure. The bonding force between the planes parallel to the base plane is weak, and it is easy to shear between the planes. It can support the load perpendicular to the base plane. It has a strong bearing capacity and a small friction coefficient. In addition, graphite also has good thermal conductivity and high temperature resistance. In the process of high temperature use, the thermal expansion coefficient is small, and it has certain strain resistance to rapid heating and rapid cooling. It has strong corrosion resistance to acid and alkaline solution and has excellent chemical stability. Due to the above excellent properties, graphite crucibles made of graphite are widely used in metal smelting, lithium battery a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/528C04B35/622C04B35/64
CPCC04B35/528C04B35/522C04B35/622C04B35/64C04B2235/608C04B2235/6562C04B2235/6567C04B2235/77C04B2235/96Y02E60/10
Inventor 李伟
Owner 吉林科工碳业有限公司
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