Preparation method of fused quartz powder with high purity and melting furnace thereof

Abstract

The invention discloses a preparation method of fused quartz powder with high purity and a special melting furnace for realizing the preparation method. The preparation method comprises the following steps: (1) crushing; (2) water washing; (3) purifying an active gas in the melting furnace; (4) crushing; (5) removing impurities. The melting furnace disclosed by the invention comprises a furnace body, a spiral column and a plurality of heating pipes; the side part of the furnace body is provided with a plurality of air ducts; the upper end of the furnace body is provided with an opening; the spiral column is of a conical structure which is small at the top and big at the bottom, and is arranged in the furnace body; the heating pipes are arranged on the circumferential inner wall of the furnace body. The preparation method disclosed by the invention is more simplified, but the efficiency is improved twice, and the purity is obviously improved.

Description

technical field [0001] The invention relates to a preparation method of high-purity fused silica powder and melting furnace equipment specially used for purification by the method. Background technique [0002] Fused silica material is an important industrial raw material, widely used in new energy, new materials, electronic information, metallurgy, steel, aerospace and other fields. With the rapid development of new energy and information industries, fused silica materials have become an important strategic material, and products are developing towards high purity and controllable particle gradation. [0003] At present, the preparation of high-purity fused silica powder materials in my country mainly uses high-quality high-purity vein quartz for processing. The process is relatively simple, and SiO 2 The content has been unable to break through 99.99%, the added value of the product is low, the energy consumption is high, the environmental protection problem is prominent,...

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Problems solved by technology

[0003] At present, the preparation of high-purity fused silica powder materials in my country mainly uses high-quality high-purity vein quartz for processing. The process is relatively simple, and SiO 2 The content has been unable to break through 99.99%, the added value of the product is low, the energy consumption is high, the environmental protection problem is prominent, and the waste of resources is serious

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