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Method for preparing low-radioactivity radiating red mud ceramic material by using self-releasing glaze

A technology for ceramic materials and red mud, which is applied in the field of preparing low radioactive radiation red mud ceramic materials, can solve problems such as reducing radioactive radiation, and achieve the effects of reduced radioactive radiation, low cost and wide sources.

Inactive Publication Date: 2012-09-26
GUILIN UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are no reports at home and abroad on the use of self-releasing glazes to reduce radioactive radiation.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] (1) Ingredients according to mass percentage: red mud (taken from Guangxi Pingguo Aluminum Company) 27%, red sandstone (taken from Guangxi Jinxiu Dayaoshan) 60%, vero mud (a kind of kaolin) 5%, Barium carbonate (chemically pure) 8%; the chemical composition of red mud is shown in Table 1;

[0024] (2) Put the raw materials in step (1) into the ball milling device and ball mill the mixture for 24 hours;

[0025] (3) Dry the material obtained in step (2) at 105°C for 10 hours;

[0026] (4) Put the material obtained in step (3) into a Φ50mm mold, and keep the pressure under 10MPa for 1 minute;

[0027] (5) The green body obtained in step (4) is sintered in a box-type resistance furnace at 1040°C for 1 hour, and cooled to room temperature to obtain a red mud ceramic material.

Embodiment 2

[0029] (1) Ingredients according to mass percentage: red mud (taken from Guangxi Pingguo Aluminum Industry Company) 28%, red sandstone (taken from Guangxi Jinxiu Dayaoshan) 56%, vero mud (a kind of kaolin) 5%, Barium carbonate (chemically pure) 10%; Borax (chemically pure) 1%; The chemical composition of red mud is shown in Table 1;

[0030] (2) Put the raw materials in step (1) into the ball milling device and ball mill the mixture for 24 hours;

[0031] (3) Dry the material obtained in step (2) at 105°C for 10 hours;

[0032] (4) Put the material obtained in step (3) into a Φ50mm mold, and keep the pressure under 10MPa for 1 minute;

[0033] (5) The green body obtained in step (4) is sintered in a box-type resistance furnace at 1040°C for 1 hour, and cooled to room temperature to obtain a red mud ceramic material.

Embodiment 3

[0035] (1) Ingredients according to mass percentage: red mud (taken from Guangxi Pingguo Aluminum Industry Company) 28%, red sandstone (taken from Guangxi Jinxiu Dayaoshan) 62%, vero mud (a kind of kaolin) 5%, Red lead oxide (analytical purity) 5%; the chemical composition of red mud is shown in Table 1;

[0036] (2) Put the raw materials in step (1) into the ball milling device and ball mill the mixture for 24 hours;

[0037] (3) Dry the material obtained in step (2) at 105°C for 10 hours;

[0038] (4) Put the material obtained in step (3) into a Φ50mm mold, and keep the pressure under 10MPa for 1 minute;

[0039] (5) The green body obtained in step (4) is sintered in a box-type resistance furnace at 1140°C for 1 hour, and cooled to room temperature to obtain a finished product.

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Abstract

The invention discloses a method for preparing a low-radioactivity radiating red mud ceramic material by using a self-releasing glaze, which comprises the following steps of: (1) taking the following raw materials in percentage by mass: 20 to 70 percent of red mud, 20 to 70 percent of red sandstone, 2 to 10 percent of plasticizing agent, and 1 to 25 percent of one or two of compounds of barium, boron and lead; (2) putting the raw materials in the step (1) into a ball mill to perform ball milling and mixing for 12 to 36 hours; (3) drying a material obtained in the step (2) for 3 to 24 hours atthe temperature of between 50 and 120 DEG C; (4) performing press forming or plastic forming on a material obtained in the step (3) to prepare a body; and (5) sintering the body obtained in the step (4) for 0.5 to 6 hours at the temperature of between 900 and 1,350 DEG C, and cooling the sintered body to the room temperature to obtain a finished product. The method has a wide range of raw material sources and an extremely low cost, and uses a coating of the self-releasing glaze so that the radioactive radiation of the red mud is greatly reduced.

Description

Technical field [0001] The invention relates to a method for preparing low-radioactive radiation red mud ceramic materials by using self-release glaze. Background technique [0002] Red mud is a solid powdery waste produced in the process of extracting alumina from bauxite. With the development of the aluminum industry, the annual accumulation of red mud in the world continues to increase, and a large amount of red mud is not effectively used, which causes great harm to the environment and also troubles the development of the aluminum industry. [0003] The radioactive radiation of red mud is high, which is harmful to the ecological environment and human body. In the research on the treatment and utilization of red mud, there have been reports at home and abroad that many results are feasible in process and engineering technology, but the products are more harmful to the environment and the human body, and no one wants to produce or adopt the products. Therefore, effectively avoi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B41/86C03C8/14
Inventor 覃烁吴伯麟赵艳荣马从倡
Owner GUILIN UNIVERSITY OF TECHNOLOGY
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