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Method for preparing glass ceramics by compounding red mud and fly ash

A technology of glass ceramics and fly ash, which is applied in the field of architectural decoration, can solve problems such as red mud and fly ash environmental pollution, achieve good social and economic benefits, reduce production costs, and achieve good stability

Active Publication Date: 2016-06-08
SHANDONG JIANZHU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to provide a method for compounding glass-ceramic materials by using red mud and fly ash to solve the environmental pollution problem of red mud and fly ash and turn waste into treasure. The present invention adopts high-temperature melting The high value-added product red mud fly ash glass-ceramics can be prepared by the method, and the total utilization rate of the two can reach up to 95%. The prepared red mud fly ash glass-ceramics can be used as building decoration materials, industrial wear-resistant materials and handicrafts

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Table 2: The performance of glass-ceramic prepared by embodiment 1

[0021] performance Glass ceramics of the present invention Density (g / cm 3 ) 2.6 Flexural strength (MPa) 235 Moh's hardness 7 Water absorption (%) ＜0.03 chemical stability UA+ radioactivity none

[0022] Example 2:

Embodiment 2

[0024] Table 3: The performance of glass ceramics prepared by embodiment 2

[0025] performance Glass ceramics of the present invention Density (g / cm 3 ) 2.5 Flexural strength (MPa) 196 Moh's hardness 8 Water absorption (%) ＜0.03 chemical stability UA+ radioactivity none

[0026] Example 3:

Embodiment 3

[0028] Table 4: The performance of glass ceramics prepared by embodiment 3

[0029] performance Glass ceramics of the present invention Density (g / cm 3 ) 2.6 Flexural strength (MPa) 189 Moh's hardness 8 Water absorption (%) ＜0.03 chemical stability UA+ radioactivity none

[0030] Example 4:

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PUM

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Abstract

The invention relates to a method for preparing high-performance glass ceramics by compounding red mud and fly ash, which is suitable for the fields of architectural decoration and handicrafts. Mix evenly with 5~25% additives, prepare basic glass by high-temperature melting method, and then heat-treat the basic glass to obtain glass ceramics. The invention can not only consume solid waste to the greatest extent, turn waste into wealth, but also save energy and reduce consumption, greatly reduce production costs and at the same time realize green and environmental protection production, solve the environmental pollution problem of red mud and fly ash, and turn waste into wealth , with good social and economic benefits.

Description

technical field [0001] The invention relates to a method for preparing ceramics by using solid waste, in particular to a method for preparing glass ceramics by compounding red mud and fly ash, and is suitable for the fields of architectural decoration and handicrafts. Background technique [0002] Red mud is a solid waste produced from the production of alumina from bauxite. The mineral composition and chemical composition are very complex. For every ton of alumina produced, about 1.0-1.3 tons of red mud are produced. As the waste residue with the largest emission in alumina production, the main component is SiO 2 , CaO, Fe 2 o 3 、Al 2 o 3 and a small amount of TiO 2 , MgO, Na 2 O, K 2 O and dozens of trace scattered elements. Although red mud has a certain utilization rate in some engineering utilization, the amount is still limited, and red mud cannot be consumed in large quantities. [0003] my country's thermal power plants mainly burn coal. According to reports...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03C10/00
Inventor 刘立强赵东张全鹏李航
Owner SHANDONG JIANZHU UNIV