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Glass clarifier and glass preparation method

A clarifying agent and glass technology, applied in glass manufacturing equipment, glass furnace equipment, glass production, etc.

Active Publication Date: 2015-11-25
QINGYUAN CSG NEW ENERGY SAVING MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But they are non-environmentally friendly substances, and their use has been banned abroad

Method used

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  • Glass clarifier and glass preparation method
  • Glass clarifier and glass preparation method
  • Glass clarifier and glass preparation method

Examples

Experimental program
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Effect test

preparation example Construction

[0033] see figure 1 , the preparation method of the glass of an embodiment, comprises the steps:

[0034] Step S110: Mix the raw material mixture and the glass clarifier to obtain a batch material, melt the batch material at 1400°C-1520°C, and then raise the temperature to 1550°C-1620°C for clarification to obtain glass liquid.

[0035] Raw material mixtures are proportioned as required, and may be aluminosilicate mixtures, phosphate mixtures, and the like. As a glass clarifier, the glass clarifier mentioned above was used.

[0036] The mass ratio of the raw material mixture to the glass clarifying agent is 90.5-98.78:1.22-9.5.

[0037] The melting time is preferably 1 hour, and the clarifying time is preferably 2 hours.

[0038] Step S120: shaping the molten glass to obtain glass.

[0039] Preferably, the step of forming the molten glass is formed by a float method.

[0040] After the glass is prepared, a step of tempering the glass to obtain tempered glass is also inclu...

Embodiment 1

[0052] 1. Mix the raw material mixture and glass clarifier to obtain the batch material, put the batch material in an electric melting furnace, and keep it warm at 1500°C for 1 hour to melt the batch material; wherein, the raw material mixture includes quartz sand, Na 2 CO 3 , CaCO 3 、KNO 3 、K 2 CO 3 、NaNO 3 , MgO, Al 2 o 3 , zircon sand and TiO 2 ; Glass fining agents including NH 4 NO 3 、Na 2 SO 4 , CeO 2 and SnO 2 , NH 4 NO 3 、Na 2 SO 4 , CeO 2 and SnO 2 The mass ratio of the raw material mixture and the glass clarifier is 97.15:2.85.

[0053] 2. Raise the temperature of the molten batch to 1605°C for clarification for 2 hours to obtain molten glass;

[0054] 3. The molten glass is formed by the float method to obtain zirconium aluminosilicate glass. The components of the zirconium aluminosilicate glass are shown in Table 1;

[0055] 4. Heat the zirconium aluminosilicate glass at 300°C for 30 minutes, then place it in a potassium nitrate melt at 420°C f...

Embodiment 2

[0057] 1. Mix the raw material mixture and glass clarifier to obtain the batch material, put the batch material in an electric melting furnace, and keep it warm at 1510°C for 1 hour to melt the batch material; wherein, the raw material mixture includes quartz sand, Na 2 CO 3 , CaCO 3 、KNO 3 、K 2 CO 3 、NaNO 3 , MgO, Al 2 o 3 , zircon sand and TiO 2 ; Glass fining agents including NH 4 NO 3 、Na 2 SO 4 , CeO 2 and SnO 2 , NH 4 NO 3 、Na 2 SO 4 , CeO 2 and SnO 2 The mass ratio of the raw material mixture and the glass clarifier is 2.0:3.0:0.12:0.10; the mass ratio of the raw material mixture and the glass clarifier is 94.78:5.22.

[0058] 2. Raise the temperature of the melted batch to 1615°C for clarification for 2 hours to obtain molten glass;

[0059] 3. The molten glass is formed by the float method to obtain zirconium aluminosilicate glass. The components of the zirconium aluminosilicate glass are shown in Table 1;

[0060] 4. Heat the zirconium aluminosil...

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Abstract

The invention relates to a glass clarifier and a glass preparation method. The glass clarifier contains nitrate, sodium sulfate, ceria and stannic oxide, wherein the mass ratio of nitrate to sodium sulfate to ceria to stannic oxide is (0.2-3.0): (1.0-3.0): (0.01-2.0): (0.01-1.5). Thus, the glass clarifier is non-toxic and harmless and is relatively good in clarification effect.

Description

technical field [0001] The invention relates to the technical field of glass, in particular to a glass clarifying agent and a glass preparation method. Background technique [0002] Large quantities of gas are generated during the melting stage of glass production. Therefore, bubbles are the most common glass defect, which will affect the appearance, transparency, mechanical strength, optical uniformity, etc. of glass products, and the annual loss caused by this is more than hundreds of millions of dollars all over the world. With the increasingly severe market competition, customers have higher and higher quality requirements, so all glass manufacturers try their best to take measures to reduce bubble defects. The most common way to eliminate bubbles is to increase the melting temperature and clarification temperature. Aluminosilicate glass (Al 2 o 3 >12%), there are disadvantages of melting, clarification and homogenization, heavy glass reinforcement, and many bubble...

Claims

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Application Information

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IPC IPC(8): C03C1/00C03B5/225
CPCY02P40/57
Inventor 王明忠陶武刚陈自发陈志鸿王杏娟
Owner QINGYUAN CSG NEW ENERGY SAVING MATERIALS CO LTD
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