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A production system and production process of high-purity quartz raw material

A production system, quartz technology, applied in the manufacture of tools, glass molding, silicon dioxide, etc., can solve technically difficult problems

Active Publication Date: 2021-06-08
QILU UNIV OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If it is necessary to further improve the purity of quartz raw materials, the technical difficulty is still relatively high

Method used

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  • A production system and production process of high-purity quartz raw material

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Effect test

Embodiment 1

[0031] A production system for high-purity quartz raw materials, including a raw material conveying device, a heating and melting device, a melt cooling and conveying device, a pickling device, a centrifuge 15, a vacuum drying furnace 18 and a vacuum packaging machine 19; the raw material conveying device The discharge port of the heating and melting device is located above the feed port of the heating and melting device, the discharge hole of the heating and melting device is located above the melt cooling and transportation device, and the end of the melt cooling and transportation device is located at the Above the feed port of the pickling device, the discharge hole of the pickling device is connected with the feed port of the centrifuge through a pipeline, and the material outlet at the bottom of the centrifuge is connected with the feed port of the vacuum drying furnace through a pipeline, The discharge port of the vacuum drying furnace is connected with the feed port of ...

Embodiment 2

[0042] A kind of production technique of high-purity quartz raw material, utilizes the production system described in above-mentioned embodiment 1 to produce, specifically comprises the following processing steps:

[0043] (1) Feeding: The 3-4N quartz mineral raw material powder is lifted and transported to the kiln head silo by a bucket elevator, and the raw material powder is added into the crucible through the electromagnetic vibrating feeder arranged under the kiln head silo, and the continuous feeding time is based on The volume of the crucible and the length of melting and discharging time are determined, and all the raw material powder to be melted in the crucible is added at one time.

[0044] (2) Melting: Heating the crucible with plasma or high-frequency heating mode surrounding the middle and lower part of the crucible. The crucible is protected by vacuum or inert gas. The melting temperature is 2000-2200°C. After high-temperature melting, alkali and alkaline earth m...

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Abstract

The invention belongs to the technical field of production of high-purity quartz raw materials, and in particular relates to a production system and a production process of high-purity quartz raw materials. The production system of the high-purity quartz raw material of the present invention comprises a raw material conveying device, a melting device, a melt cooling and conveying device, a pickling device, a centrifuge, a vacuum drying furnace and a vacuum packaging machine, and the production system can use 3 ‑4N purity quartz mineral powder is melted and purified to prepare 5‑6N high-purity quartz raw materials. The production process includes the following main steps: feeding, material heating and melting, melt outflow, water quenching and air cooling, and water quenching particle transportation , pickling, solid-liquid separation, drying, packaging. The system and process designed by the invention help to fully destroy the structure of the quartz mineral raw material and expose impurities to facilitate pickling and impurity removal.

Description

technical field [0001] The invention belongs to the technical field of production of high-purity quartz raw materials, and in particular relates to a production system and a production process of high-purity quartz raw materials. Background technique [0002] High-purity quartz raw materials are indispensable raw materials for the preparation of high-purity quartz glass. With the development of semiconductor and optical fiber industries, the market demand for 5-6N high-purity quartz raw materials is increasing. However, whether it is natural crystal or quartz sand raw materials , or artificially synthesized silica raw materials, it is difficult to achieve this level of purity. In order to reduce the cost of raw materials, purification from mineral raw materials is an important way to produce high-purity quartz raw materials. The process mainly includes calcination, chlorination, pickling and other links. Based on the selection of vein quartz ore with high initial purity, th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B33/12C03B1/00C03B20/00
CPCC01B33/12C03B1/00C03B20/00
Inventor 沈建兴庞庆乐毕秋琳赵祥刘世权
Owner QILU UNIV OF TECH
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