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Glass ceramic prepared by compounding steel slag and red mud and preparation method thereof

A technology of glass ceramics and steel slag, which is applied in the environmental field, can solve the problems of steel slag and red mud environmental pollution, and achieve the effects of facilitating industrial promotion, simple preparation process, and reducing land costs

Active Publication Date: 2013-09-18
SHANDONG JIANZHU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to solve the environmental pollution problem of steel slag and red mud, turn waste into treasure, and provide a glass ceramic material prepared by compounding steel slag and red mud and its preparation method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] (a) Evenly mix 50 parts by weight of steel slag, 40 parts by weight of red mud, and 10 parts by weight of river sand, keep it in a high-temperature furnace at 1550 ° C for 4 hours for melting treatment, then put it into an annealing furnace, and keep it at 600 ° C After 30 minutes, cool with the furnace to obtain the basic glass;

[0034] (b) After molding the glass sample, place it in a heat treatment furnace at 900°C for 1 hour to perform a heat treatment process of nucleation and crystallization, and then cool to obtain glass ceramics.

[0035] The prepared glass-ceramic properties are shown in Table 1:

[0036] Table 1 Properties of prepared glass ceramics

[0037] performance Glass ceramics of the present invention Density (g / cm 3 ) 2.7 Flexural strength (MPa) 185.22 Moh's hardness 7 Water absorption (%) ＜0.03 chemical stability UA+ radioactivity none

Embodiment 2

[0039] (a) Evenly mix 65 parts by weight of steel slag, 30 parts by weight of red mud and 5 parts by weight of river sand, keep the temperature at 1600°C for 2 hours in a high-temperature furnace for melting treatment, then put it into an annealing furnace, and keep it warm at 600°C After 30 minutes, cool with the furnace to obtain the basic glass;

[0040] (b) After molding the basic glass sample, place it in a heat treatment furnace and hold it at 1050°C for 1 hour to carry out the heat treatment process of nucleation and crystallization, and then cool it to obtain glass ceramics.

[0041] Prepared glass-ceramic properties are shown in Table 2:

[0042] Glass-ceramic performance table prepared in table 2

[0043] performance Glass ceramics of the present invention Density (g / cm 3 ) 2.5 Flexural strength (MPa) 156.26 Moh's hardness 7 Water absorption (%) ＜0.03 chemical stability UA+ radioactivity none

Embodiment 3

[0045] (a) Evenly mix 30 parts by weight of steel slag, 60 parts by weight of red mud and 10 parts by weight of river sand, keep the temperature at 1500°C for 3 hours in a high-temperature furnace for melting treatment, then put it into an annealing furnace, and keep it warm at 550°C After 30 minutes, cool with the furnace to obtain the basic glass;

[0046] (b) After molding the basic glass sample, place it in a heat treatment furnace and hold it at 800°C for 1 hour to carry out the heat treatment process of nucleation and crystallization, and then cool it to obtain glass ceramics.

[0047] The prepared glass-ceramic properties are shown in Table 3:

[0048] Table 3 Properties of prepared glass ceramics

[0049] performance Glass ceramics of the present invention Density (g / cm 3 ) 2.6 Flexural strength (MPa) 145.86 Moh's hardness 8 Water absorption (%) ＜0.02 chemical stability UA+ radioactivity none

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Abstract

The invention belongs to the field of environmental technology, and specifically relates to a high-performance glass ceramic prepared by compounding steel slag and red mud and a preparation method thereof. The glass ceramic prepared by compounding steel slag and red mud is prepared from the following raw materials in parts by weight: 30-65 parts of steel slag, 20-60 parts of red mud and 5-15 parts of river sand. The preparation method comprises the following steps of: uniformly mixing the steel slag, the red mud and the river sand; preparing base glass by a high-temperature melting method; and performing thermal treatment on the base glass to obtain the glass ceramic. According to the glass ceramic and preparation method provided by the invention, the glass ceramic is prepared by taking the steel slag and red mud as main raw materials, the waste steel slag and red mud are utilized, the land cost and the storage yard construction and maintenance cost for stacking the steel slag and red mud are reduced, and the pollution to the surrounding land environment, water sources and air caused by the steel slag and red mud is avoided, thereby being favorable for saving land resources and protecting the environment.

Description

technical field [0001] The invention belongs to the field of environmental technology, and in particular relates to a high-performance glass ceramic prepared by compounding steel slag and red mud and a preparation method thereof. Background technique [0002] China is the first country in the world to smelt and use iron and steel. Today, China's steel industry has achieved many world firsts: first in output, first in export volume, and first in consumption, and has become a major steel producer in the world. A few days ago, Zhang Changfu, vice president and secretary-general of China Iron and Steel Industry Association, said at the 2012 International Conference on Metallurgical and Mineral Products hosted by United Metals that according to the production situation of my country's steel industry from January to May this year, it is estimated that my country's crude steel output will reach 7 in 2012. billion tons, the mass production of steel will increase the output of steel ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C10/00C03C6/10
Inventor 刘立强张全鹏李航
Owner SHANDONG JIANZHU UNIV
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