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A low energy consumption iron tailings building glass-ceramic and its preparation method

A technology of glass-ceramics and iron tailings, applied in the field of building decoration materials, can solve the problems of high product cost, high energy consumption, high melting temperature, etc., and achieve the effects of improved product performance, low construction loss, and reduced sintering temperature

Active Publication Date: 2018-08-14
SHENYANG JIANZHU UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problems existing in the prior art, the present invention provides a low-energy consumption iron tailings building glass-ceramic and its preparation method. The purpose is to provide a high-performance building glass-ceramic produced by a new method through research and improvement. This architectural glass-ceramic is made of iron tailings as the main raw material, directly sintered with glass batch materials, without high-temperature melting process, and the main crystal phase precipitated is diopside, which can reduce the preparation temperature from about 1600°C to 1150°C And the crystallization rate of the product is high, and the product has high mechanical strength, excellent wear resistance, corrosion resistance and weathering resistance, which solves the high melting temperature commonly found in the preparation of architectural glass-ceramics by water quenching and sintering. , high energy consumption, high product cost and other technical problems

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] The low-energy consumption iron tailings building glass-ceramic of the present embodiment, its basic glass composition is calculated by mass fraction: SiO 2 52.5%, Al 2 o 3 5.6%, CaO10.5%, MgO4.7%, FeO3.5%, Fe 2 o 3 9.5%, ZnO 1.2%, K 2 O 3.3%, Na 2 O4.4%, BaO1.3%, CaF 2 3.43%, Ce 0.07%.

[0024] The preparation method of the low energy consumption iron tailings architectural glass-ceramics of this embodiment is carried out according to the following steps:

[0025] According to mass percentage, iron tailings 54.5%, corrected raw material dolomite 8%, limestone 13.0%, kaolin 6.0%, flux introduced raw material K 2 SO 4 2.0%, Na 2 CO 3 6.0%, Fluorite 4.2%, BaSO 4 3.1%, Ce 0.1%, nucleating agent ZnO 0.7%, Fe 2 o 3 2.4% for batching, the raw materials are mixed and ground, passed through a 200-mesh square hole sieve and stirred evenly to make a mixture;

[0026] Preheat the electric furnace to 100°C, place the mixture in the electric furnace, raise the tem...

Embodiment 2

[0030] The low-energy consumption iron tailings building glass-ceramic of the present embodiment, its basic glass composition is calculated by mass fraction: SiO 2 52.2%, Al 2 o 3 5.8%, CaO11.2%, MgO5.5%, FeO9.6%, Fe 2 o 3 2.1%, ZnO 0.81%, K 2 O 3.3%, Na 2 O4.4%, BaO1.6%, CaF 2 3.4%, Ce 0.09%.

[0031] The preparation method of the low energy consumption iron tailings architectural glass-ceramics of this embodiment is carried out according to the following steps:

[0032] According to mass percentage, 56.45% iron tailings, 9% corrected raw material dolomite, 12.0% limestone, 5% kaolin, flux introduced raw material K 2 SO 4 1.3%, Na 2 CO 3 5.1%, Fluorite 5.0%, BaSO 4 3.2%, Ce 0.15%, nucleating agent ZnO 0.5%, Fe 2 o 3 2.3% for batching, mix the raw materials and grind them, pass through a 200-mesh square hole sieve and stir them evenly to make a mixture;

[0033] Preheat the electric furnace to 100°C, place the mixture in the electric furnace, raise the temp...

Embodiment 3

[0037] The low-energy consumption iron tailings building glass-ceramic of the present embodiment, its basic glass composition is calculated by mass fraction: SiO 2 50.2%, Al 2 o 3 5.8%, CaO10.2%, MgO5.5%, FeO9.8%, Fe 2 o 3 2.38%, ZnO 1.2%, K 2 O 3.6%, Na 2 O5.7%, BaO1.5%, CaF 2 4.0%, Ce 0.12%.

[0038] The preparation method of the low energy consumption iron tailings architectural glass-ceramics of this embodiment is carried out according to the following steps:

[0039] According to mass percentage, iron tailings 57%, corrected raw material dolomite 9%, limestone 11.0%, kaolin 4.3%, flux introduced raw material K 2 SO 4 1.1%, Na 2 CO 3 4.9%, Fluorite 5.0%, BaSO 4 4.0%, Ce 0.2%, nucleating agent ZnO 0.8%, Fe 2 o 3 2.7% for batching, the raw materials are mixed and ground, passed through a 200-mesh square hole sieve and stirred evenly to make a mixture;

[0040] Preheat the electric furnace to 100°C, place the mixture in the electric furnace, raise the temp...

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Abstract

The invention belongs to the technical field of building decorative materials and particularly relates to low-energy-consumption building glass-ceramics prepared from iron tailings and a preparation method of the building glass-ceramics. The low-energy-consumption building glass-ceramics prepared from the iron tailings comprise chemical components in percentage by mass as follows: 48%-53% of SiO2, 4%-8% of Al2O3, 8%-12% of CaO, 4%-9% of MgO, 5%-13% of FeO and Fe2O3, 0.5%-1.5% of ZnO, 5%-11% of K2O and Na2O, 1%-2% of BaO, 2%-4% of CaF2 and 0.05%-0.2% of Ce. According to the preparation method, after blending, raw materials are mixed, ground, sieved and stirred, a mixture is prepared and roasted at 1,100-1,150 DEG C for 60-70 min, is subjected to air cooling and then is polished and cut, and the low-energy-consumption building glass-ceramics prepared from the iron tailings are prepared. A large quantity of iron tailings as industrial waste residues is used, the mixing mass percentage of the metal tailings in blended components is higher than 54%, secondary resources are developed, environmental pollution is reduced, and remarkably environmental benefits and social benefits are realized.

Description

technical field [0001] The invention belongs to the technical field of building decoration materials, and in particular relates to a low-energy consumption iron tailing building glass-ceramic and a preparation method thereof. Background technique [0002] At present, most of the glass ceramics used in the field of building materials are prepared by water quenching and sintering, and the raw materials are basically pure glass raw materials, and the main crystal phase precipitated is β-wollastonite. This method requires high-temperature melting (about 1600°C) glass batch materials and water quenching to prepare glass particles, which has high energy consumption, high product cost, and poor mechanical strength and corrosion resistance. and one of the outstanding problems that still exist in the field of production. For this reason, many researchers have carried out research on preparing architectural glass-ceramics by other means. From the point of view of raw materials, it h...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03C10/16C03C6/10
Inventor 徐长伟孟琦涵陈勇
Owner SHENYANG JIANZHU UNIVERSITY