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

A production system, quartz technology, applied in manufacturing tools, glass molding, silica, etc., can solve the problem of high technical difficulty

Active Publication Date: 2020-12-11
QILU UNIV OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

If it is necessary to further improve the purity of quartz ra

Method used

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

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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 particularly relates to a production system and a production process of a high-purity quartz raw material. The production system of the high-purity quartz raw material comprises a raw material conveying device, a melting device, a melt cooling and conveying device, an acid pickling device, a centrifugal machine, a vacuum drying furnace and a vacuum packaging machine, and can be used for melting and purifying quartz mineral powder with the purity of 3-4N to prepare the 5-6N high-purity quartz rawmaterial. The production process comprises the following main steps: charging, heating and melting of materials, flowing out of a melt, water quenching and air cooling, transporting of water-quenchedparticles, pickling, solid-liquid separation, drying and packaging. The system and the process designed by the invention are beneficial to fully damaging the structure of the quartz mineral raw material and exposing impurities so as to be beneficial to acid 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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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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