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Special fiber glass melting method and its special electric melting furnace

A special fiber and melting technology, applied in glass furnace equipment, glass manufacturing equipment, glass production, etc., can solve the problems of shortening kiln life, not conducive to ensuring the quality of molten glass, and large temperature changes in hot spots, so as to reduce the melting area , good wire drawing process performance, and the effect of improving the area melting rate

Active Publication Date: 2011-04-20
NANJING FIBERGLASS RES & DESIGN INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is not conducive to ensuring the quality of molten glass, and shortens the life of the kiln
In addition, the hot spot temperature of glass liquid with plate electrodes changes greatly

Method used

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  • Special fiber glass melting method and its special electric melting furnace
  • Special fiber glass melting method and its special electric melting furnace
  • Special fiber glass melting method and its special electric melting furnace

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0043] A special fiber glass melting method, the steps comprising:

[0044] 1) Prepare the mixture: the raw materials of each component are calculated in parts by weight: quartz sand: 52, alumina: 26, boron oxide: 3, cerium oxide: 2, iron oxide: 2, magnesium oxide and calcium oxide The sum of those: 15, pulverized, uniformly mixed by air force, the particle size of the powder is about 190 microns.

[0045] 2) Melting: put the powder obtained in step 1) into an electric melting furnace for melting, and the melting temperature is controlled at about 1550°C;

[0046] 3) Clarification: The high-temperature molten glass made in step 2) flows into a clarification tank lined with quartz bricks or masonry, and after clarification and homogenization, it flows into the operation pool; both the clarification tank and the operation pool are equipped with molybdenum electrodes The heating device flows out through the double-hole platinum drain plate, and the temperature of the outflow fro...

example 2

[0054] A special fiber glass melting method, the steps comprising:

[0055] 1) Prepare the mixture: the raw materials of each component are calculated in parts by weight: quartz sand: 57, alumina: 26, boron oxide: 3, cerium oxide: 2, iron oxide: 1, magnesium oxide and calcium oxide The sum of those: 11, weighed separately for use, the sum of the proportioning ratio of each component is 100, pulverized, uniformly mixed by air force, the particle size of the powder is about 210 microns.

[0056] 2) Melting: Put the powder obtained in step 1) into an electric melting furnace for melting, and the melting temperature is controlled at about 1580°C;

[0057] 3) Clarification: The high-temperature molten glass made in step 2) flows into a clarification tank lined with quartz bricks or masonry, and after clarification and homogenization, it flows into the operation pool; both the clarification tank and the operation pool are equipped with molybdenum electrodes The heating device flows...

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Abstract

The invention relates to a method for melting special fiber glass. The method comprises the steps of preparation of a mixture, melting and clarification. Before melting, an electric melting kiln carries out kiln roasting; in the melting process; a kiln is kept at hot-spot temperature of between 1,500 and 1,600 DEG C for normal operation; and in melting, the depth of glass liquid in a melting partis more than 600 mm. A special electric melting kiln used by the method comprises an electrode, the melting part and a molding part power supply system. The lower part of the pool wall of the meltingpart is provided with a gap bridge throat; the bottom of a molding part is provided with a corresponding gap bridge throat; two gap bridge throats are communicated through a gap bridge; the cross section of the melting part is a square; the melting part is provided with an arched coping; the electrode is inserted to the bottom of the melting part; and the height of the electrode inserted into thekiln is between 450 and 550 mm. The electrodes are in full symmetrical arrangement; the power supply system adopts a Scott mode to supply power for the electrode; and the depth of the melting part ismore than 600 mm. The method is suitable for melting a special frit which is difficult to melt; and a special frit glass ball obtained through application of the method has good wire drawing performance.

Description

technical field [0001] The invention relates to a glass production method, in particular to a melting method for producing special glass (such as high-strength glass, low-dielectric glass, radiation-resistant glass, etc.) and a special electric melting furnace. Background technique [0002] Special fiber glass usually uses electric melting furnace to melt glass. U.S. Patent 4262158 introduces that special glass melting furnace uses platinum-rhodium alloy electrode heating to melt glass in a high-level, cold-top furnace, but the furnace needs a large amount of platinum-rhodium alloy and high liquid The corresponding process of bit melting furnace is only suitable for glass with good heat permeability. Generally speaking, the production process of fiber glass: raw materials—cleaning with water—drying—putting into a crucible—preheating with a blowtorch—ignition heating—glass melting and adjusting temperature—finished product—storage. [0003] Generally speaking, special fiberg...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03B5/235C03C13/00
CPCY02P40/50
Inventor 祖群陈世超周建淼吴嘉培来志宏唐秀凤徐闻天黄松林武文静姜宇王振鹏
Owner NANJING FIBERGLASS RES & DESIGN INST CO LTD
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