Process and equipment for regulating and controlling crystal forms of glass sand raw materials

Abstract

Provided is a process for regulating and controlling crystal forms of glass sand raw materials. The glass sand raw materials are added in from the top of a furnace along slopes of a hearth lining, the temperature in the furnace is controlled to be 600 DEG C to 800 DEG C, then the furnace is heated to 900 DEG C, and heat preservation is carried out; after heat preservation is finished, the furnace continues to be heated to 1200 DEG C to 1300 DEG C, and then heat preservation is carried out; and after heat preservation is finished, a cylinder control unit automatically opens a discharging outlet furnace door, and the raw materials quickly fall off from a discharging outlet and enter the next procedure. Equipment for regulating and controlling the crystal forms of the glass sand raw materials comprises a furnace body, a heat preservation layer, a refractory layer, si-mo bar heating bodies, the hearth lining, a control panel, the discharging outlet furnace door, the discharging opening, cylinder guiding rods and cylinders. The four faces of the hearth lining are all slopes, and the included angles between the slopes and the vertical plane are identical; the si-mo bar heating bodies are evenly distributed on the periphery of the outer portion of the hearth lining and arranged in the longitudinal direction; the furnace door is mounted at the discharging outlet, and the cylinder guiding rods and the cylinders are mounted on the furnace door, so that opening and closing of the furnace door are achieved. Energy consumption is lowered, automation is achieved, and the production cost is reduced.

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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