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Quartz crucible for founding lanthanide series optical glass and method for founding lanthanide series optical glass slag clinker

An optical glass and quartz crucible technology, applied in glass manufacturing equipment, glass production, glass furnace equipment, etc., can solve the problems of increased production cost, high energy cost, corrosion of quartz crucible body, etc., so as to reduce energy cost and reduce erosion. , the effect of improving production efficiency

Active Publication Date: 2013-05-22
CHENGDU UNITE OPTOELECTRONICS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the corrosion of the quartz crucible body is serious, and the energy cost is high, and the use of the sleeve also increases the production cost

Method used

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  • Quartz crucible for founding lanthanide series optical glass and method for founding lanthanide series optical glass slag clinker
  • Quartz crucible for founding lanthanide series optical glass and method for founding lanthanide series optical glass slag clinker
  • Quartz crucible for founding lanthanide series optical glass and method for founding lanthanide series optical glass slag clinker

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Effect test

Embodiment 1

[0022] Embodiment 1 Quartz crucible of the present invention

[0023] Such as figure 1 As shown, the present invention discloses a crucible for melting lanthanide optical glass, which includes a quartz crucible 1 and a refractory base 2 located at the bottom of the quartz crucible 1 .

[0024] Preferably, the upper surface of the refractory base 2 is provided with a groove matching the shape of the bottom of the quartz crucible 1, the bottom of the quartz crucible 1 is embedded in the refractory base 2, and the height of the top of the refractory base 2 is lower than that of the quartz crucible 1. a quarter.

[0025] Preferably, there is a channel 3 connecting the bottom of the quartz crucible 1 inside the refractory base 2, so as to make the heating more uniform and reduce heat loss.

[0026] Further, the bottom surface and the side surface of the quartz crucible 1 are rounded transitions.

Embodiment 2

[0027] Embodiment 2 The method for melting lanthanide optical glass slag clinker of the present invention

[0028] From room temperature to 800°C, the heating time is about 4.5 hours, and then from 800°C to the feeding temperature of 1200°C, the heating time is about 2.5 hours, and the powder is put into the melting after holding at 1200°C for 1 hour. The heating time is about 8 hours in total. After starting to feed, keep feeding at a constant temperature of 1200°C. The feeding time is about 15 hours. After adding the powder, keep it warm for half an hour, then put it into the bubbler to start bubbling, the bubbling time is half an hour, and the total time of the melting stage is about 16 hours. After the bubbling is completed, the melted molten glass is released to complete the production. Put two batches of powder into a single furnace for smelting, that is, heat up once and smelt twice, and the total time of a single furnace is about 40 hours.

Embodiment 3

[0029] Embodiment 3 The method of melting the lanthanide optical glass slag clinker of the present invention is compared with the old technology

[0030] The old heating and melting process: using the quartz crucible described in the patent application number: 200920082682. 3 hours, keep warm at 1200°C for 2 hours, then cool down to the initial feeding temperature of 1050°C, cool down for about 1 hour, keep warm at 1050°C for 1 hour, and then start to put in powder for melting. The heating time is about 15 hours in total. After starting to feed, the temperature will gradually rise during the feeding process. The feeding time is about 22 hours. After the powder is added, keep warm for 1 hour, and then put it into the bubbler to start bubbling. The bubbling time is 1 hour. The total time of the melting stage is about 24 hours. After the bubbling is completed, the molten glass is released to complete the production. Put two batches of powder into a single furnace for smelting, ...

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Abstract

The invention provides a quartz crucible for founding lanthanide series optical glass; the quartz crucible comprises a quartz crucible and a fire-resistant material base arranged at the bottom part of the quartz crucible. The invention further provides a method for founding lanthanide series optical glass slag clinker. Through improving the crucible structure as well as changing the heating technology and the founding technology, the heating and founding time is greatly shortened without affecting the quality of products, the production efficiency is improved, the corrode to the quartz crucible during the founding process is reduced and the energy cost is reduced.

Description

technical field [0001] The invention relates to a quartz crucible for melting lanthanide optical glass and a method for melting lanthanide optical glass clinker. Background technique [0002] Lanthanide optical glass is generally also called high refractive index low dispersion optical glass, including LaK, LaF and ZLaF glass varieties in the world. Hoya is further divided into LaC, TaC, LaF, TaF, NbFD, and TaFD according to the refractive index and the oxide introduced. Lanthanide optical glass is a high-grade colorless optical glass. In order to ensure the various optical properties of lanthanide optical glass, it is required to strictly prohibit the introduction of colored particles such as iron, nickel, and manganese during the melting process. Therefore, the raw material of lanthanide optical glass , The selection of melting equipment and tooling utensils are all demanding. Since the melting temperature of lanthanide optical glass is generally at a high temperature of...

Claims

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Application Information

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IPC IPC(8): C03B5/06C03B5/16
CPCC03B5/06C03B5/26Y02P40/57
Inventor 王自力周兵
Owner CHENGDU UNITE OPTOELECTRONICS TECH CO LTD
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