Roasting furnace for producing high-purity quartz powder

Abstract

The invention provides a roasting furnace for producing high-purity quartz powder. The roasting furnace comprises a cylinder, a stirring motor, a hot-air blower and a PLC. A partition plate is connected to the interior of the cylinder, a feed port is formed in the upper part of the side wall of one side of the cylinder, a discharge port is formed in the lower part of the side wall of the other side of the cylinder, a stir-frying opening is formed in the middle part of the upper surface of the cylinder, and the bottom surface of the cylinder is provided with a heating hole. The stirring motor is erected above the cylinder body, a stir-frying rod is connected to an output shaft of the stirring motor, and the stir-frying rod extends into the lower part of the inner side of a stir-frying cavity of the cylinder from the stir-frying opening and is provided with a plurality of stir-frying support rods at intervals. The hot-air blower is arranged below the cylinder, the output end of the hot-air blower is connected with a hot-air pipe, and the hot-air pipe extends into the inner side of a heating cavity of the cylinder through the heating hole. The PLC is arranged on the outer side of the cylinder, and the stirring motor and the hot-air blower are in communication connection with the PLC. According to the roasting furnace, powder can be fully stir-fried, it is guaranteed that the powder is evenly heated, the follow-up purification effect is improved, and the roasting furnace is simple and reasonable in structural design, low in manufacturing cost and good in economic benefit.

Description

technical field [0001] The invention belongs to the technical field of quartz powder production, and in particular relates to a roasting furnace for producing high-purity quartz powder. Background technique [0002] Quartz powder (same as quartz sand) is also called silica powder. Quartz sand is a hard, wear-resistant, chemically stable silicate mineral whose main mineral component is SiO 2 , the color of quartz sand is milky white, or colorless and translucent, hardness 7, brittle without cleavage, shell-like fracture, grease luster, density 2.65, bulk density (20-200 mesh is 1.5), its chemical, thermal And mechanical properties have obvious anisotropy, insoluble in acid, slightly soluble in KOH solution, melting point 1650 ℃. [0003] High-purity quartz powder generally refers to SiO 2 Quartz powder with a content higher than 99.9% is mainly used in IC integrated circuits and quartz glass industries, and its advanced products are widely used in large-scale and ultra-la...

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Problems solved by technology

However, in the production process provided by this patent, although the calcination step is used, the calcination device used is not mentioned, and the properties of calcination and roasting are different.

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