A system and method for synthesizing quartz glass

By improving the quartz glass production system and method, a low expansion coefficient and uniform density of titanium-doped quartz glass are achieved, solving the problem of high expansion coefficient in the existing technology, meeting high-end market needs, and being suitable for high-temperature precision instruments and large astronomical telescopes.

CN116789349BActive Publication Date: 2025-09-19JIANGSU HENGXIN QUARTZ TECH CO LTD
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Patent Information

Application Number
CN202310797248.4
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2023-06-30
Publication Date
2025-09-19
Estimated Expiration
2043-06-30

AI Technical Summary

Technical Problem

The existing quartz glass production process results in a high expansion coefficient and uneven density distribution, which makes it difficult to meet the high-end market's demand for a low expansion coefficient.

Method used

A system for synthesizing quartz glass is used, including a precipitation device and a sintering device. Through the linkage control of raw material premixing and gas detectors, the raw material mixing uniformity and atmosphere stability are ensured, the transformation of Ti3+ to Ti4+ is optimized, and special heat treatment is combined to reduce the expansion coefficient.

Benefits of technology

The expansion coefficient of the titanium-doped quartz glass produced can reach 20ppb/℃, which meets the needs of the high-end market. It has good density distribution uniformity and is suitable for high-temperature precision measuring instruments and large astronomical telescopes.

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Abstract

The present invention relates to a system and method for synthesizing quartz glass, wherein the system includes a precipitation device and a sintering device; the precipitation device includes: a raw material supplier, a burner and a deposition chamber; the raw material supplier includes: a first raw material tank, a second raw material tank and a premixed raw material tank; the first raw material tank and the second raw material tank are respectively connected to the premixed raw material tank for mixing the two raw materials; the mixed raw material tank is connected to one end of the burner, and the other end of the burner is connected to the deposition chamber for making the mixed raw materials into a titanium-doped loose body; the sintering device includes: a furnace core tube, a gas detector and a heater; the gas detector is installed on the furnace core tube; the heater is installed around the furnace core tube; the titanium-doped loose body is placed in the furnace core tube; the present invention realizes that before the raw materials enter the burner, they first enter the heated premixed raw material tank, so that the raw materials are fully mixed in advance, and then enter the burner for reaction. After adding this device, the titanium-doped loose body produced has uniform density distribution and good diameter uniformity, which is convenient for subsequent process processing.
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