Preparation method of colored fused quartz material

Abstract

The invention relates to a preparation method of a colored fused quartz material. The method comprises the following steps: pickling quartz sand, drying to a constant weight, screening with a 6-8 meshsieve, carrying out magnetic separation with a high magnetic separator to remove iron-containing impurities in the quartz sand, adding a pigment selected from any one of erbium oxide, a red copper wire, copper oxide, a 925 silver wire, a 999 silver wire, neodymium oxide or praseodymium oxide into the quartz sand subjected to magnetic separation, and after uniform mixing, loading the mixture intoan electric melting furnace, electrifying a graphite electrode bar of the electric melting furnace, melting for 8-12 hours, stopping power supply, cooling, and crushing to obtain the product. The colored fused quartz material is prepared by adding a metal or rare earth raw material into the quartz sand and then smelting, the problem of single color of fused quartz in the prior art is solved, the application of the fused quartz is expanded, the method is simple, and the prepared colored fused quartz material is bright in color and high in color fastness; the material is suitable for artificialcrystal products such as crystal balls, carvings and the like, or is a colored quartz plate material.

Description

technical field [0001] The invention relates to a preparation method of a colored fused quartz material, belonging to the technical field of quartz processing. Background technique [0002] Fused silica is an amorphous state of silicon oxide, and is an amorphous SiO made from quartz sand after high-temperature melting and cooling. 2 product. It is a typical glass with long-range disorder in its atomic structure, which provides its high service temperature and low thermal expansion coefficient through three-dimensional structural cross-links. The color of quartz sand is usually milky white, or colorless and translucent, and the fused silica obtained after high-temperature melting is colorless and transparent block, granule or white powder. Due to the single color, the application is limited, and it is mainly used for refractory materials at present. , Ceramic raw materials and glass raw materials. [0003] There is no introduction to the preparation method of colored fused...

AI Technical Summary

Problems solved by technology

[0003] There is no introduction to the preparation method of colored fused silica in the prior art, but there is an introduction to the preparation of colored quartz sand. For example, solidify with resin, and at a temperature of about 200 ° C, solidify the organic pigment toner on the surface of the quartz sand. This method obtains The color fastness of high-quality quartz sand is not good, and it is easy to fade under light. At the same time, the acid and alkali resistance of ordinary resin is not good; The material reacts with the surface of the quartz stone in a solid state to form a stable substance such as metal silicate. The product fired by this method is glass, which has insufficient hardness and high temperature resistance, and its application is still limited.