A kind of red quartz tube and preparation method thereof

Abstract

The invention provides a red quartz tube and a preparation method thereof. The red quartz tube is prepared by the following raw materials: high purity potassium oxide, high purity sodium oxide, high purity aluminum oxide, high purity samarium oxide, high purity manganese oxide, and high purity quartz sand whose impurity content is lower than 30ppm; wherein the weight ratio of the raw materials is 0.02-0.04:0.03-0.05:0.01-0.02:0.06-0.08:0.01-0.02:99.0-99.5. The method can be used for directly producing the red quartz tube which has good coloring effects, and spraying and coloring treatment is not needed for a colorless quartz tube; at the same time, hydrochloric acid, hydrofluoric acid and nitric acid are used for preparing mixed acid, during high temperature baking, pollution for surrounding environments is reduced, and usage period of a continuous electric smelting furnace is prolonged for one time.

Description

technical field [0001] The invention relates to a quartz tube, in particular to a red quartz tube and a preparation method thereof. Background technique [0002] At present, due to its excellent physical and chemical properties, quartz tubes are widely used in various fields such as electric light sources, semiconductors, optical communications, military industry, metallurgy, building materials, chemistry, machinery, electricity, and environmental protection. The temperature changes, the quartz tube is heated to about 1100 ° C, and it will not burst when it is placed in room temperature water; the electrical insulation performance is good, it is an excellent electrical insulation material, and it has good insulation performance even at high temperatures, but the existing quartz tube The ingredients of the pipe are all dissolved and mixed with nitrates, and then baked at high temperature. The nitrogen oxides decomposed by nitrates at high temperatures will cause serious air p...

AI Technical Summary

Problems solved by technology

[0002] At present, due to its excellent physical and chemical properties, quartz tubes are widely used in various fields such as electric light sources, semiconductors, optical communications, military industry, metallurgy, building materials, chemistry, machinery, electricity, and environmental protection. The temperature changes, the quartz tube is heated to about 1100 ° C, and it will not burst when it is placed in room temperature water; the electrical insulation performance is good, it is an excellent electrical insulation material, and it has good insulation performance even at high temperatures, but the existing quartz tube The ingredients of the pipe are all dissolved and mixed with nitrate, and baked at high temperature. The nitrogen oxides decomposed by nitrate at high temperature are very serious to air pollution, and reduce the production cycle of the continuous furnace.

At the same time, the quartz tubes produced by the production method of quartz tubes in the prior art are all colorless quartz glass tubes, and the production process has poor controllability and high hydroxyl content, which cannot meet the needs of some special industries. For intermittent production, the production efficiency is low. When a red quartz tube is needed, it is coated on the colorless quartz tube to make an outer-coated red quartz tube; not only the process is complicated, but the quality is not easy to control