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Production device of glass initial melting product and production method thereof

A technology of production device and production method, applied in glass melting device, glass furnace equipment, glass manufacturing equipment, etc., can solve the problem of optical glass not being resistant to corrosion, and achieve the effect of avoiding introduction and improving transmittance

Active Publication Date: 2016-04-20
CDGM OPTICAL GLASS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because the quartz material is not resistant to corrosion of optical glass, the limitation of the production of glass primary melt by quartz tube is determined.

Method used

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  • Production device of glass initial melting product and production method thereof
  • Production device of glass initial melting product and production method thereof
  • Production device of glass initial melting product and production method thereof

Examples

Experimental program
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Effect test

preparation example Construction

[0037] The preparation method of glass raw material primary melt of the present invention at least comprises several steps such as forming protective layer, raw material supply, heating and melting, quenching process, concrete steps are:

[0038] 1) Form a protective layer:

[0039] First use the heating device 4 to heat the raw material flow channel 2 to a predetermined temperature, then put the glass raw material powder or broken glass slag into the raw material flow channel 2 from the raw material input port 5 above the raw material flow channel 2, when the glass raw material contacts the raw material flow On the surface of channel 2, the raw material gradually melts and forms molten glass, and then gradually flows downward along the raw material channel 2. When the entire raw material channel 2 is covered with molten glass, a cooling medium is introduced into the cooling medium channel 1 to cover the raw material flow. The glass liquid in channel 2 forms a layer of solidif...

Embodiment 1

[0048] The raw material flow channel 2 adopts a spiral structure, and the quartz partition wall 3 is cylindrical, and is arranged around the raw material flow channel 2, such as Figure 1-4 As shown, the raw material flow channel 2 is made of platinum with a spiral radius of 200-700mm, the thickness of the quartz partition wall 3 is 5-50mm, and the inner diameter is 220-720mm, and the heating device 4 is made of silicon carbide rods. The glass raw material is a glass raw material that is highly corrosive to quartz.

[0049]Using a silicon carbide rod heater, the space temperature is raised to about 1300°C, and then the powdered glass raw material is put in at a certain speed from the top of the raw material flow channel 2. After there is glass liquid on the surface of the raw material flow channel 2, it is passed from the bottom of the cooling medium channel 1. Enter the cooling water, adjust the cooling water flow rate and space temperature, observe whether there is a solidif...

Embodiment 2

[0052] Using the same glass raw material as in Example 1, the raw material flow channel 2 adopts a square plate structure, and the quartz partition wall 3 is arranged on the upper part of the raw material flow channel 2, such as Figure 5-7 As shown, the raw material flow channel 2 is made of platinum material. The raw material flow channel 2 is a hollow structure with a cooling medium channel 1 inside, baffles are provided on three sides of the square plate, and a feeding port is provided at one end. The width of the raw material flow channel 2 is 200-800 mm, the length is 600-2000 mm, and the angle between the bottom surface of the raw material flow channel 2 and the horizontal plane is 1-20°. The upper part of the raw material flow channel 2 is the feed port. In order to leave space for the feed, the quartz partition wall 3 at the feed port position is 100-400mm higher than the quartz partition wall 3 at the discharge port position, such as Figure 6-7 As shown, the quartz ...

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Abstract

The invention provides a production device of a glass initial melting product which is longer in service life and not likely to color glass due to introduction of platinum ions. The production device of the glass initial melting product comprises a raw material flow path, a quartz partition wall, a cooling medium channel and a heating device; the quartz partition wall is arranged at the periphery or upper part of the raw material flow path; the heating device is arranged at the periphery or upper part of the quartz partition wall; the raw material flow path is provided with a raw material charging port in one end and a raw material flowing out port in the other end; the raw material flow path is of a hollow structure and is internally provided with the cooling medium channel. The glass raw material is radiated, heated and melted, a glass layer is formed at the surface of the raw material flow path by a cooling method, the raw material is prevented from directly contacting the inner wall of the raw material flow path in the melting process, thus reducing or avoiding introduction of the platinum ions and improving an optical glass transmittance.

Description

technical field [0001] The invention relates to a glass production device and a production method thereof, in particular to a glass primary melt production device and a production method thereof. Background technique [0002] In the preparation process of optical glass, most of the glass adopts the secondary melting method, that is, the raw materials are put into the crucible for heating and melting, and after melting, they are homogenized to form a uniform glass liquid and then put into water for quenching, thus obtaining the primary glass. The molten material is put into a platinum vessel for main melting to produce optical glass. The advantage of this method is that after the primary melting of raw materials, the erosion of the inner wall of the platinum crucible in the main melting process is weakened. [0003] The crucible materials for the initial melting of raw materials mainly include platinum and quartz crucibles. Due to its corrosion resistance, platinum crucible...

Claims

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Application Information

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IPC IPC(8): C03B5/033C03B5/235C03B5/23
CPCC03B5/033C03B5/23C03B5/235C03B2211/71
Inventor 邓宇朱志新李明陆明新
Owner CDGM OPTICAL GLASS