Crucible and preparation device and method for special dispersion glass

A crucible, special technology, applied in the field of crucible and special dispersion glass preparation equipment, to achieve the effects of controlling volatilization, isolating outside air, high optical uniformity and batch consistency

Active Publication Date: 2015-12-23
CHINA BUILDING MATERIALS ACAD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The embodiment of the present application provides a crucible, a special dispersion glass preparation device and its preparation method, which solves the problem in the prior art of the preparation of special dispersion glass with coexistence of "volatile components and refractory components", and realizes special The control of volatile components during the preparation of dispersion glass ensures the full melting of refractory components

Method used

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  • Crucible and preparation device and method for special dispersion glass
  • Crucible and preparation device and method for special dispersion glass
  • Crucible and preparation device and method for special dispersion glass

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preparation example Construction

[0046] The preparation method of the special dispersion glass provided in the embodiment of the present invention is prepared by using the above-mentioned preparation device. The outside of the melting furnace is made of heat-resistant stainless steel plate, the inside is made of mullite refractory material, and the lower part is a steel structure support; the melting furnace is provided with a crucible cover 10, through which the crucible is heated, and the material of the crucible cover is clay or quartz ceramics The melting furnace is provided with a first heating element 11, which is a silicon molybdenum rod, which can make the temperature in the melting furnace reach up to 1650 °C; the auxiliary furnace is provided with a second heating element 14, which is It is a silicon carbide rod, which can make the temperature in the auxiliary furnace reach up to 1400°C; crucible cover, material guide pipe, leakage pipe, first plug, second plug, first to fourth annular grooves, first...

Embodiment 1

[0050] The steps of preparing special dispersion glass in this embodiment are as follows:

[0051] (1) Accurately weigh the following glass raw materials: quartz sand 1.22kg, boric acid 6.39kg, tantalum pentoxide 2.64kg, zirconium dioxide 1.80kg, soda ash 0.62kg, potassium carbonate 1.76kg, zinc oxide 0.24Kg, hafnium oxide 0.84kg and antimony trioxide 0.12kg, after mixing evenly, place it in a traditional melting furnace and melt it into molten glass under normal pressure;

[0052] (2) Put the crucible in the melting furnace, open the feeding port and exhaust port on the crucible cover, and then heat the melting furnace and auxiliary furnace to keep the temperature in the crucible at 1400°C and the temperature in the leakage pipe at 1300°C ; The gap between the agitator and the stirring hole is liquid-sealed by the liquid seal structure between the first seal on the stirrer and the crucible lid, and the liquid seal liquid used is the glass liquid obtained by the above-mentione...

Embodiment 2

[0056] The steps of preparing special dispersion glass in this embodiment are as follows:

[0057] (1) Accurately weigh the following glass raw materials: quartz sand 1.71kg, boric acid 4.26kg, tantalum pentoxide 3.60kg, zirconium dioxide 1.44kg, potassium carbonate 2.29kg, lithium carbonate 0.3kg, zinc oxide 0.12kg, calcium carbonate 0.22 kg, 0.31kg of barium carbonate, 0.6kg of hafnium oxide and 0.12kg of antimony trioxide, after mixing evenly, place it in a traditional melting furnace and melt it into molten glass under normal pressure;

[0058] (2) Put the crucible in the melting furnace, open the feeding port and exhaust port on the crucible cover, and then heat the melting furnace and auxiliary furnace to keep the temperature in the crucible at 1350°C and the temperature in the leakage pipe at 1250°C ; The gap between the agitator and the stirring hole is liquid-sealed by the liquid seal structure between the first seal on the stirrer and the crucible lid, and the liquid...

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Abstract

The invention discloses a crucible and a preparation device and method for special dispersion glass. The crucible comprises a crucible body and a crucible cover. The crucible body is provided with a first annular groove for containing a liquid sealing solution. The crucible cover is provided with a first annular stop piece matched with the first annular groove. The crucible cover and the crucible body are sealed in the mode that the first annular stop piece is inserted into the first annular groove containing the liquid sealing solution. A charging opening is formed in the crucible cover and used for charging and gas introduction. A second annular groove for containing the liquid sealing solution is formed in the portion, around the charging opening, of the crucible cover. An exhaust opening is formed in the crucible cover and used for exhausting gas. A third annular groove for containing the liquid sealing solution is formed in the portion, around the exhaust opening, of the crucible cover. A stirring opening is formed in the crucible cover. A fourth annular groove for containing the liquid sealing solution is formed in the portion, around the stirring opening, of the crucible cover. A material leakage pipe is arranged at the bottom of the crucible body. The special dispersion glass prepared through the crucible has the higher optical uniformity and batch consistency.

Description

technical field [0001] The invention relates to the field of optical glass, in particular to a crucible and a preparation device and method for special dispersion glass. Background technique [0002] Optical glass has dispersion phenomenon, that is, the refractive index decreases with the increase of wavelength. The difference between the refractive indices of any two wavelengths is called partial dispersion Partial dispersion and central dispersion (n F -n C ) is called the relative partial dispersion The relationship between relative partial dispersion and Abbe number ν of most optical glasses conforms to Abbe's formula, which is approximately a straight line. This straight line is called the "normal line" of optical glass. Special dispersion glass is a kind of optical glass that deviates far from the normal line. Special dispersion glass not only has the general properties of optical glass, such as specific optical constants, high light transmittance, excellent opt...

Claims

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Application Information

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IPC IPC(8): C03B5/08
Inventor 王衍行祖成奎周鹏何坤许晓典韩滨陈江张瑞
Owner CHINA BUILDING MATERIALS ACAD
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