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Ceramic material and preparation method therefor

A technology of ceramic materials and raw materials, applied in the field of ceramic materials and their preparation, can solve the problems of low density and hardness, less red mud usage, etc., and achieve the effects of low production cost, reduced land occupation, and low sintering temperature

Active Publication Date: 2016-09-21
ZHENGZHOU UNIVERSITY OF AERONAUTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a ceramic material with red mud as the main raw material, so as to solve the problems in the prior art that the ceramics prepared with red mud as raw material have low density and hardness, and the amount of red mud used is small

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  • Ceramic material and preparation method therefor
  • Ceramic material and preparation method therefor
  • Ceramic material and preparation method therefor

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Embodiment 1

[0025] The ceramic material in this embodiment is mainly made of the following raw materials in mass percentage: 40% red mud, 30% bauxite, 10% potassium feldspar, 10% kaolin, and 10% quartz sand.

[0026] The preparation method of the ceramic material of the present embodiment comprises the following steps:

[0027] 1) Red mud, bauxite, potassium feldspar, kaolin, and quartz sand are mixed in a ball mill for 6 hours according to the proportion, and the mixed material is blown and dried to obtain a dry mixture;

[0028] 2) Add water to the dry mixture until the water content is 5%, stir evenly to obtain the wet mixture; use the upper and lower pressure molding method to form a green body; during the molding process, the pressure is 8MPa, and the pressure is maintained for 2min ;

[0029] 3) Put the green body into an atmospheric sintering furnace, raise the temperature to 1250°C at a heating rate of 10°C / min, keep it at this temperature for 1 hour, and cool it down to obtain t...

Embodiment 2

[0031] The ceramic material in this embodiment is mainly made of the following raw materials in mass percentage: 40% red mud, 30% bauxite, 10% potassium feldspar, 10% kaolin, and 10% quartz sand.

[0032] The preparation method of the ceramic material of the present embodiment comprises the following steps:

[0033] 1) Red mud, bauxite, potassium feldspar, kaolin, and quartz sand are mixed in a ball mill for 6 hours according to the proportion, and the mixed material is blown and dried to obtain a dry mixture;

[0034] 2) Add water to the dry mixture until the water content is 5%, stir evenly to obtain the wet mixture; use the upper and lower pressure molding method to form a green body; during the molding process, the pressure is 8MPa, and the pressure is maintained for 2min ;

[0035] 3) Put the green body into an atmospheric sintering furnace, raise the temperature to 1200°C at a heating rate of 10°C / min, keep it at this temperature for 2 hours, and cool it down to obtain ...

Embodiment 3

[0037] The ceramic material in this embodiment is mainly made of the following raw materials in mass percentage: 40% red mud, 30% bauxite, 10% potassium feldspar, 10% kaolin, and 10% quartz sand.

[0038] The preparation method of the ceramic material of the present embodiment comprises the following steps:

[0039] 1) Red mud, bauxite, potassium feldspar, kaolin, and quartz sand are mixed in a ball mill for 6 hours according to the proportion, and the mixed material is blown and dried to obtain a dry mixture;

[0040] 2) Add water to the dry mixture until the water content is 5%, stir evenly to obtain the wet mixture; use the upper and lower pressure molding method to form a green body; during the molding process, the pressure is 8MPa, and the pressure is maintained for 2min ;

[0041] 3) Put the green body into an atmospheric sintering furnace, raise the temperature to 1240°C at a heating rate of 10°C / min, keep it at this temperature for 1 hour, and cool it down to obtain t...

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Abstract

The invention discloses a ceramic material and a preparation method therefor. The ceramic material is mainly prepared from the following raw materials in percentage by mass: 40% to 50% of red mud, 20% to 30% of bauxite, 5% to 10% of potash feldspar, 5% to 10% of kaolin and 5% to 10% of quartz sand. The ceramic material disclosed by the invention is prepared by taking the red mud as a main raw material and is high in hardness, good in density and low in production cost, so that the problems, i.e., environmental pollution and floor-occupied stacking caused by aluminum mineral industry are solved, industrial wastes can be sufficiently utilized, the waste is changed into the valuable, and the economic and environmental benefits are remarkable.

Description

technical field [0001] The invention belongs to the field of ceramic preparation, and in particular relates to a ceramic material and a preparation method thereof. Background technique [0002] Red mud is a very fine-grained strong alkaline solid waste produced during the production of alumina from bauxite. It has a high content of iron minerals, good particle dispersion, large specific surface area, and good stability in solution. It has broad application prospects in the field of environmental restoration. However, pollutants such as fluoride and alkali in red mud will be dissolved in large quantities under the action of soaking and leaching, polluting groundwater and affecting the ecological environment and human health. [0003] my country is a big producer of alumina. For every ton of alumina produced, about 0.8-2.0t of red mud is produced. At present, the comprehensive utilization rate of red mud in my country is only 4%. At present, the accumulated stock of red mud ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B33/132
CPCC04B33/1322C04B2235/3217C04B2235/3418C04B2235/3472C04B2235/77Y02P40/60
Inventor 张锐陈雷明樊磊张新月魏胜楠赵新郭晓琴李春光
Owner ZHENGZHOU UNIVERSITY OF AERONAUTICS
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