Metal tailings construction nucleated glass and one-step sintering preparation thereof

Abstract

The invention relates to a building nucleated glass and a production method thereof, which belongs to the utilization technology of metal tailings. The basic glass compositions are (mass percentage): 50-60% of SiO2, 4-11% of Al2O3, 10-13% of CaO, 3-9% of MgO, 4-13% of (FeO and Fe2O3), 3-8% of (K2O and Na2O), 1-2% of BaO and 0.5-1.5% of ZnO; the TiO2 and Cr2O3 are used as a nucleus agent, the content of TiO2 and Cr2O3 is 2-4% and 1-2% respectively; the fluorite is used as the fluxing agent and the content of the fluorite is 2-4% of the total mass. The production method comprises the following steps of: raising the temperature of the glass batch to 1250-1300 DEG C and finishing the sintering and crystallization at the same time, no high-temperature smelting process is needed, which reduces the energy consumption and improves the crystallization effect; also, the mechanical strength and the decay resistance of the product are improved and the sintering temperature is reduced; the mass ratio of the metal tailings in the ingredient reaches more than 55%. The application method of the metal tailings nucleated glass provided by the invention is the same to that of the marble and the granite, the application occasion and the construction position are also the same without special requirements.

Description

technical field [0001] The invention relates to a building glass-ceramic, in particular to a high-performance building glass-ceramic prepared with industrial waste metal tailings as the main raw material and its preparation method, which belongs to the technology of metal tailings utilization and also belongs to a It is a building decoration material with excellent performance, mainly used for the ground, interior and exterior wall decoration, interior and exterior partition walls and blocks in buildings, etc. It is a substitute for natural stone. Background technique [0002] At present, the preparation of glass ceramics generally used in the field of building materials mostly adopts the water quenching sintering method (secondary sintering method). Wollastonite, this preparation method requires high-temperature melting (about 1600°C) to prepare water-quenched glass particles, which has high energy consumption, high product cost, and poor mechanical strength and corrosion r...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the common technical problems of high melting temperature, high energy consumption and high product cost in the preparation of architectural glass-ceramics by the water quenching sintering method. Through research and improvement, a new method of high-performance Architectural glass-ceramics, this kind of architectural glass-ceramics uses metal tailings as the main raw material, uses a composite crystal nucleating agent (part of the crystal nucleating agent is taken from the main material), and the main crystal phase precipitated is diopside, which can make the preparation temperature from 1600 ℃ down to 1250 ~ 1300 ℃, and the crystallization rate of the product is high, the product has high mechanical strength, excellent wear resistance, corrosion resistance and weather resistance

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