Method and device for continuous melting or refining of melt

A melt and pre-melt technology, applied in glass melting devices, lighting and heating equipment, furnace types, etc., can solve problems such as short service life, and achieve the effects of easy processing, rapid refining and high efficiency

Inactive Publication Date: 2011-01-26
SCHOTT AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the crucibles described therein exhibit the disadvantage that their service life is relatively short

Method used

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  • Method and device for continuous melting or refining of melt
  • Method and device for continuous melting or refining of melt
  • Method and device for continuous melting or refining of melt

Examples

Experimental program
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Embodiment 1

[0230] The composition and typical material properties of Example 1 are shown in Table 1.

[0231] Due to the high concentration of B 2 o 3 and ZnO and because of the low viscosity of this material, melting in conventional ceramic refractory materials such as eg quartz glass is completely ruled out, since these materials will completely dissolve in the melt in a very short time.

[0232] Therefore, the unit will be completely destroyed.

[0233] It may also not be possible to conduct smelting in vessels made of precious metals, since leached metals would interfere or eliminate the electrical properties of the product.

[0234] Although the melting process in a conventionally used shell-crucible high-frequency unit would avoid said disadvantages and provide a satisfactory glass quality, however, in addition to the previously described technical disadvantages of said units (two cooling circuits, spark discharge , no-load power losses at the tube and shell crucibles, complex a...

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Abstract

The invention relates to a method and a device for continuous melting or refining of a melt. The invention particularly relates to a method for continuously producing a product from the melt, wherein the melt is heated to a predetermined temperature in a shell crucible, and the bottom of the shell crucible is made of nonconductive heat-conducting material.

Description

technical field [0001] The invention relates in particular to a method and apparatus for the continuous production of glass and glass-ceramic products from a glass melt. Background technique [0002] Glass products, such as high-purity glass and glass ceramics in particular, are generally produced in melting vessels made of noble metals, such as platinum or platinum alloys, as well as of quartz glass. However, these products have known disadvantages such as, for example, yellowing due to ionic platinum entrained into the glass melt and / or scattering effects on the entrained platinum particles as well as streaks and Other inhomogeneities caused by the dissolution of the quartz glass crucible material into the glass melt. [0003] In addition, glass melts for high-purity glasses and glass ceramics are generally quite aggressive to the crucible materials used in each case. As a result, wear and tear of equipment and premature end of production capacity occur. [0004] A reme...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03B5/235C03B5/08C03C3/14C03C3/145C03C3/15C03C3/072C03C3/066C03C3/068
CPCC03B2211/70F27D1/0043F27B14/063C03B5/021C03B5/42C03B5/43
Inventor 乌韦·科尔伯格西比勒·努特根斯安德烈亚斯·格罗斯
Owner SCHOTT AG
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