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Optical glass melting method and optical glass melting device used for method

A technology of optical glass and melting furnace, which is applied in glass furnace equipment, glass manufacturing equipment, furnace, etc., can solve the problems of increased production cost and not completely eradicated, and achieve the effect of improving service life and high transmittance

Active Publication Date: 2013-01-02
HUBEI NEW HUAGUANG NEW INFORMATION MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, a small amount of batch materials still need to be added in the second smelting, so it can only be said that the pollution of metal particles in the optical glass produced in this way has been greatly reduced, but it has not been completely eradicated.
Moreover, the secondary smelting method increases the production cost

Method used

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  • Optical glass melting method and optical glass melting device used for method
  • Optical glass melting method and optical glass melting device used for method
  • Optical glass melting method and optical glass melting device used for method

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Embodiment Construction

[0026] The optical glass melting method of the present invention and the optical glass melting device dedicated to the method will be described in detail below in turn.

[0027] 1. Furnace design

[0028] The melting furnace includes a furnace body, a heating body and a crucible 4, and a charging port 2 is arranged on the furnace body. The heating body includes a melting heating body 7 and a heat preservation heating body 13, the melting heating body 7 is located at the lower part of the furnace body, and the heat preservation heating body 13 is located at the upper part of the furnace body. The heating bodies 7 and 13 are arranged in two groups of upper and lower groups, and the furnace temperature is controlled in groups. Usually the lower temperature is higher than the upper temperature. The bottom of the furnace body is a liftable furnace bottom 1, and the insulation layer at the bottom of the crucible must have sufficient thickness. When lifting the crucible, ensure tha...

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Abstract

The title of the invention is an optical glass melting method and an optical glass melting device used for the method. The invention belongs to the technical field of optical glass melting and mainly provides a method for melting glass and a device for controlling high quality of flowed molten glass. The melting method is mainly characterized in that: (1) putting optical glass raw materials of phosphatic, columbate and bismuthate into a crucible for high-temperature fusion, clarification and homogenization so as to obtain molten glass; (2) placing the above crucible together with the molten glass into an insulation area of a smelting furnace; and (3) leading out the molten glass at an intermediate area below the central surface layer and over the bottom of the crucible from the smelting furnace through a conduit so as to prepare an optical glass strip material. The furnace bottom is a liftable furnace bottom, and a guiding control device is a flow guide tube made of platinum or platinum alloy. The optical glass manufactured in the invention has high transmittance, and its refractive index nd is not less than 1.8. The optical glass has characteristics of no pollution of metal Pt and Au particles and no generation of streaks in the strip material, and is mainly used to manufacture phosphatic, columbate and bismuthate optical glass strip materials.

Description

technical field [0001] The invention belongs to the technical field of optical glass melting. In particular, it relates to a method suitable for melting optical glass ceramics and a glass export control device. The optical glass produced in this way can avoid the pollution of the optical glass by metal particles (Pt, Au), etc., and prolong the service life of the crucible. Background technique [0002] Traditional optical glass production uses ceramic melting technology. That is, the crucible for smelting is made of clay, corundum, quartz and other materials. The crucible is placed in a high-temperature furnace at about 1500 ° C, and batch materials are added to the crucible. After melting, clarification, homogenization and other processes, molten glass liquid is obtained. Then take out the crucible and pour the molten glass into the mold to cool and shape. This production method is basically eliminated in the production of optical glass due to the low yield rate, low gla...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03B5/16C03B5/08
Inventor 唐雪琼刘向东李克炎张卫梁立新
Owner HUBEI NEW HUAGUANG NEW INFORMATION MATERIALS CO LTD
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