Glass ceramics generated by taking granite tailings as main raw material, and preparation method for glass ceramics

Abstract

The invention discloses glass ceramics generated by taking granite tailings as a main raw material and a preparation method for the glass ceramics. The glass ceramics comprises the following components in percentage by mass: 4.2 to 4.4 percent of Na2O, 7.0 to 7.3 percent of MgO, 25 to 26 percent of Al2O3, 42 to 47 percent of SiO2, 4.0 to 4.5 percent of TiO2, 2.9 to 3.1 percent of K2O, 7.9 to 8.2 percent of CaO, 0 to 4 percent of MnO2, and 0.5 to 0.6 percent of Fe2O3. According to the glass ceramics, the granite tailings, dolomite, caustic calcined magnesite, aluminum hydroxide, titanium dioxide, sodium carbonate and manganese ore are utilized as raw materials; through a formula design, the content of each component is within the range above; the using amounts of the TiO2, the MnO2 and the Fe2O3 are adjusted, so that the glass ceramics of multiple colors, such as blue grey, brown and dark yellow, can be obtained; the glass ceramics takes diopside as a primary crystalline phase, takes spinel as a secondary crystalline phase, and is high in mechanical property.

Description

technical field [0001] The embodiment of the present invention relates to a kind of building material and its preparation method, more specifically, the embodiment of the present invention relates to a kind of granite tailings as the main raw material and TiO 2 A glass-ceramic produced as a crystal nucleating agent and a preparation method thereof. Background technique [0002] Glass-ceramics, also known as glass ceramics, is a type of polycrystalline composite material containing a large number of microcrystalline phases and glass phases obtained by controlling the crystallization of glass with a specific composition under a certain heat treatment system. It has many valuable properties such as high mechanical strength, good chemical stability and thermal stability, hard and wear-resistant, etc. It is very suitable as a high-grade building decoration material, and has a wide range of uses in chemical, metallurgy, aviation and military industries. [0003] The existing prod...

AI Technical Summary

Problems solved by technology

The addition of such oxides shortens the high-temperature holding time for crystallization, but accelerates the erosion of the kiln, and compounds such as fluorine and phosphorus volatilize severely at high temperatures, which further intensifies the erosion of high-temperature equipment such as kilns, and eventually leads to Yield decline, high production cost, expensive, not easy for large-scale industrial production

[0004] Fe in granite 2 o 3 The mass percentage is in the range of 0.8%-1.2%, using TiO 2 As a nucleating agent, TiO 2 and Fe 2 o 3 Make the glass-ceramic appear gray, and the decorative effect is not good