Manufacture method of igneous rock crystal glass material

Abstract

The invention discloses a manufacture method of an igneous rock crystal glass material. The method sequentially comprises the following steps of: smashing ores, pretreating broken ores, mixing auxiliary materials, smelting the mixed materials and preparing a finished product, wherein the ores are igneous rocks, and the broken ore grain size after the ores are smashed is 0.1-5mm; the pretreatment of the broken ores adopts a method of water washing or acid washing and water washing; acid for the acid washing is hydrochloric acid, nitric acid or sulfuric acid with a mass concentration of 1-50 percent, and the stirring and dipping time of the acid washing is 0.5-24 hours; the auxiliary materials are at least one of components comprising SiO2, Al2O3, MgO, B2O3, ZrO2, La2O3 and Y2O3, and the addition of the auxiliary materials is 1-30 percent of the mass of the broken ores; the smelting temperature of the mixing material is the melting point temperature of +50 DEG C to the boiling point temperature of -50 DEG C of the ores; and smelting environment comprises at least one of environment comprising reducing atmosphere, nitriding atmosphere, vacuum environment, enclosed environment and air. A preparation process of the finished product comprises the following steps of: mould casting, calendaring or blowing molding, or manufacturing powder after chilling and smashing melts.

Description

technical field [0001] The invention relates to the preparation technology of mineral glass materials, in particular to a method for preparing crystal glass materials by using acidic, neutral, alkaline or superalkaline igneous rocks. Background technique [0002] Glass is an amorphous solid formed by quenching a melt. When the earth's lava cools rapidly, it becomes a glassy igneous rock (Igneous rocks) ore body, commonly known as crystal or agate (such as obsidian crystal Obsidian, black agate fire jade), and slowly cools to form a non-glassy ordinary igneous rock ore. People call natural igneous rock glass crystal (or agate), to be different from ordinary glass, according to which the mineral material prepared by igneous rock in the present invention is also called crystal glass (or agate). [0003] Igneous rocks account for about 95% of the earth's lithosphere, and there are more than 700 varieties. As the igneous rock of the earth's skeleton, it naturally has the charac...

AI Technical Summary

Problems solved by technology

[0007] 1. High cost: A typical production process of basalt glass ceramics is to add 4% ammonium nitrate as an oxidant, heat the glass at 650°C for 4 hours after melting, and heat at 880°C for 1 hour to produce microcrystals, and then anneal to room temperature (Cheng Jinshu etc., "Glass-Ceramics", Chemical Industry Press, Beijing, 2006)

The 5-hour heat preservation process of this process doubles the production energy consumption

[0008] 2. A lot of waste products: the viscosity of basalt glass will increase rapidly as the temperature drops in the forming area (that is, the material is short and solidifies quickly). In addition, the melt forming area and the crystallization area are very close, and it is especially easy to devitrify and become powder slag waste

[0009] 3. Quality deterioration: In order to reduce the viscosity and melting point, people add fluxes such as limestone, sodium carbonate, broken glass and fluorite to basalt ore (Cheng Jinshu et al., "Glass Ceramics", Chemical Industry Press, Beijing, 2006; Li Ping and Ou Zhi, "Correct understanding of basalt fiber and glass fiber", 2008(3): 35-41; US4009015, 1977), while increasing the crystallization tendency, it also brings many negative effects

[0010] 4. Large limitations: traditional high Fe 2 o 3 / FeO ratio, high crystallization tendency basalt glass and glass ceramics preparation method, the additives to improve the crystallization rate deteriorate some physical and chemical properties of the material, which limits the room for material performance improvement, and is not suitable for acidic and neutral igneous rock ores

The main reason for the cracks on the surface of basalt glass is the high stress gradient caused by rapid cooling and high thermal expansion coefficient and the glass strength reduced by traditional technology.

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