Process method for removing fluid inclusions in quartz sand by combining microwaves with acid leaching

Abstract

The invention discloses a process method for removing fluid inclusions in quartz sand by combining microwaves with acid leaching. According to the process method disclosed by the invention, microwave power is the most critical factor which affects the removal effect of the fluid inclusions in quartz sand, and a scientific and accurate treatment process is put forward. The process comprises the steps of: performing irradiation treatment on high-purity quartz sand by microwaves, wherein the microwave power is 1800-2400w; and then performing acid leaching by using monomer acid with a mass fraction of 5-15% for 6-24 hours, wherein the monomer acid is hydrochloric acid, nitric acid or hydrofluoric acid. A plenty of experiments verify that the light transmissivity of quartz sand materials treated by the process is stabilized to be not less than 90.0%, and reaches up to 99.2%, and the purity of SiO2 reaches 99.988%. The process method disclosed by the invention is simple to operate, stable and reliable and suitable for industrial production.

Description

technical field [0001] The invention relates to the technical field of quartz sand purification, more specifically, to a process method for removing gas-liquid inclusions in quartz sand by combining microwave with acid leaching. Background technique [0002] Quartz sand is an important industrial mineral raw material. It has been widely used in traditional industrial production and modern technology. The processed quartz powder is the raw material for manufacturing various materials in the mechanical casting industry and the chemical industry. It has high purity, Quartz with good transparency can also replace crystal to make quartz glass and artificial crystal. The traditional raw materials of high-quality quartz glass are first-class and second-class natural smelted crystals, but the crystal resources are close to exhaustion and cannot meet the needs of modern high-tech industrial development, prompting people to explore alternative quartz glass raw material minerals. my c...

AI Technical Summary

Problems solved by technology

[0006] However, the technical effects produced by different microwave powers are different, and in the removal process of quartz sand gas-liquid inclusions, in addition to the influence of microwave power, other key factors such as the type of single acid, acid concentration, and acid leaching time have great influence on the gas-liquid inclusions of quartz sand. The influence law of inclusion removal effect is not clear, so the existing relevant research results in this field provide different technical solutions and technical effects

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