Method for removing gas-liquid inclusion in quartz sand by using microwave bursting method

Abstract

The invention discloses a method for removing gas-liquid inclusion in quartz sand by using a microwave bursting method. Microwave power is the most significant factor which can affect the removal effect of the gas-liquid inclusion in quartz sand, and the scientific and precise method comprises the following steps: putting primarily purified quartz sand in microwave radiation of which the microwave power is 2100-2700w, and treating for 1-3 hours when the temperature of microwave treatment is kept being 700-900 DEGC. A great number of tests show that the gas-liquid inclusion removal effect of a quartz sand material treated by using the method disclosed by the invention is good, gas-liquid inclusion can be even completely removed, and the high-purity quartz sand can meet the requirement of being a crystal substitute product. The method is good in environmental friendliness, simple to operate, stable and reliable in process and applicable to industrial large-scale production.

Description

technical field [0001] The invention relates to the technical field of quartz sand purification, and more specifically, relates to a process method for removing gas-liquid inclusions in quartz sand by microwave bursting. Background technique [0002] With the rapid development of high-tech fields, especially in aviation technology, nuclear energy industry and electronic industry, the requirements for the purity of quartz glass materials are getting higher and higher. A large number of high-purity natural crystal ores are mined to meet the needs of these fields. However, with the gradual depletion of natural crystal resources, people are prompted to explore new quartz glass raw material minerals to replace natural crystals. In the late 1970s, developed countries began to explore the way to replace crystal mines with ordinary quartz mines. By the 1990s, Kemmochi et al. processed ordinary quartz into raw material powder for high-grade quartz glass. However, the research in t...

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Problems solved by technology

For example, the Chinese patent application with the patent application number 201110040475.X provides a method for removing gas-liquid inclusions and impurities in the production of high-purity quartz sand. The quartz sand is placed in a microwave field with a microwave frequency range of 300MHz to 300GHz, so that the gas The liquid inclusions and impurities are selectively heated and rapidly raised to above 1000°C (the higher the better), kept warm for 2 to 30 minutes, and then cooled rapidly, and then an external load is applied to the quartz sand to destroy the gas-liquid inclusions or peel off the impurities. not effectively

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