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Method for preparation of ceramic material by using graphite tailing sand and corundum powder

A technology of graphite tailings and ceramic materials, applied in the field of preparation of ceramic materials, can solve problems such as environmental pollution of tailings, and achieve the effects of solving environmental pollution, high yield, and low cost

Inactive Publication Date: 2014-02-05
HEILONGJIANG UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to solve the technical problem of environmental pollution caused by the tailings produced in the graphite mining process, and to provide a method for preparing ceramic materials using graphite tailings sand and alumina powder

Method used

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  • Method for preparation of ceramic material by using graphite tailing sand and corundum powder
  • Method for preparation of ceramic material by using graphite tailing sand and corundum powder
  • Method for preparation of ceramic material by using graphite tailing sand and corundum powder

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specific Embodiment approach 1

[0016] Specific embodiment one: adopt graphite tailings sand and aluminum oxide powder to prepare the method for ceramic material in the present embodiment as follows:

[0017] 1. The graphite tailings are heat-treated in a tube furnace, the heat treatment temperature is 400-600°C, and the holding time is 1-2 hours;

[0018] 2. Mix the alumina powder with a purity ≥ 95% with the graphite tailing sand treated in step 1 by ball milling, and the mass ratio of alumina powder to tailing sand is 3 to 38:57;

[0019] 3. Put the mixture obtained in step 2 into a graphite mold, raise the temperature to 1100-1500°C at a rate of 10-15°C / min, and then heat it at a temperature of 1100-1500°C, a holding time of 1-2 hours, and a pressing speed 0.1-0.2MPa / min, molding pressure of 10-30MPa under the conditions of press molding, that is, the ceramic material prepared by using graphite tailings sand and alumina powder.

[0020] During the ball milling process in Step 2 of this embodiment, the m...

specific Embodiment approach 2

[0021] Embodiment 2: The difference between this embodiment and Embodiment 1 is that the particle size of the alumina powder in Step 2 is 20-50 μm. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0022] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that the ball milling time in step 2 is 12-48 hours. Others are different from the first or second specific embodiment.

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Abstract

The invention relates to a method for preparation of a ceramic material, discloses a method for preparation of a ceramic material by using graphite tailing sand and corundum powder, and solves the technical problems of environmental pollution caused by tailings produced by a graphite exploitation process. The method comprises the following steps: 1, performing heat treatment of the graphite tailing sand in a tube furnace; 2, mixing evenly, by ball milling, the corundum powder and the graphite tailing sand which is treated by the step 1; and 3, putting the mixture obtained by the step 2 in a graphite mould for compression molding to obtain the ceramic material prepared by using the graphite tailing sand and the corundum powder. The ceramic material prepared by the method is high in yield, simple in process, low in cost, and good in repeatability, can be widely used in machinery, metallurgy, building and chemical materials and other fields, and solves the technical problems of environmental pollution caused by the tailings produced by the graphite exploitation process. The method belongs to the field of preparation of ceramic materials with the graphite tailing sand.

Description

technical field [0001] The present invention relates to a method for preparing a ceramic material. Background technique [0002] Due to its excellent thermal conductivity, electrical conductivity, lubrication, wear resistance and chemical stability, graphite is widely used in the fields of machinery, metallurgy, chemical industry and aerospace. In recent years, with the rapid development of my country's industry, the demand for graphite is increasing day by day. The large amount of tailings produced in the graphite mining process not only causes great pollution to the environment, but also poses a great threat to people's lives and property safety due to its hidden safety hazards. Therefore, the rational development of graphite tailings and the improvement of their comprehensive utilization have become the focus of attention. Contents of the invention [0003] The purpose of the present invention is to solve the technical problem of environmental pollution caused by tail...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/00C04B35/622
Inventor 康文泽赵国刚张海礁李成林黄耀群周波付长璟
Owner HEILONGJIANG UNIVERSITY OF SCIENCE AND TECHNOLOGY
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