A process and equipment for regulating the crystal form of high-purity quartz sand raw material

Abstract

A process for regulating the crystal form of high-purity quartz sand raw materials. The high-purity quartz sand raw materials are added from the top of the furnace along the slope of the furnace lining. The temperature in the furnace is controlled at 600°C-800°C, heated to 900°C for heat preservation, and continues to heat after the heat preservation is completed. Keep warm at 1200-1300°C. After the heat preservation is over, the cylinder control unit will automatically open the furnace door of the discharge port, and the raw materials will quickly fall from the discharge port to enter the next process. A device for regulating the crystal form of high-purity quartz sand raw materials includes a furnace body, an insulating layer, a refractory layer, a silicon-molybdenum rod heating body, a furnace lining, a control panel, a furnace door at a discharge port, a discharge port, a cylinder guide rod, and a cylinder , the four sides of the furnace lining are beveled and the angle with the vertical plane is the same, the silicon-molybdenum rod heating body is evenly distributed around the outside of the furnace lining, arranged longitudinally, the furnace door is installed at the discharge port, and the cylinder guide rod and the cylinder guide rod are installed on the furnace door. The cylinder realizes the opening and closing of the furnace door. The invention reduces energy consumption, realizes automation and saves production cost.

Description

technical field [0001] The invention relates to a production process for regulating the crystal form of quartz, in particular to a process and equipment for regulating the crystal form of high-purity quartz sand raw materials. Background technique [0002] High-purity quartz sand is mainly used in high-tech industries such as aerospace, bioengineering, electronic packaging, optical fiber communications, and military industries. Only high-quality crystals in nature can satisfy the preparation of high-purity quartz sand. However, the reserves of crystals are limited, so countries all over the world have done a lot of work in purifying and preparing high-purity quartz sand instead of crystals with quartz ore. [0003] An important process for the preparation of high-purity quartz sand is calcination. The purpose of calcination is to change the crystal form of quartz. Due to the change of crystal form, quartz will have a large volume expansion. Due to the difference in expansi...

AI Technical Summary

Problems solved by technology

This process does not consider the transformation of the quartz crystal form, and the impurities and gas-liquid inclusions cannot be fully exposed, resulting in insufficient removal of impurities from the quartz, which increases the difficulty of the subsequent removal process

Intermittent feeding not only increases energy consumption, but also reduces production efficiency

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