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Composite fining agent for glass and preparation method thereof

A technology of compound clarifier and glass, applied in the field of glass compound clarifier and its preparation, can solve the problems of low decomposition temperature of carbon powder, reduced use effect, influence of clarifier, etc., and achieves less material loss, excellent energy saving and emission reduction, and clarification good effect

Inactive Publication Date: 2017-11-17
GUANGZHOU ZHONGXIN CENTURY FIBERGLASS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in the actual use process, it was found that this combination has its defects: ①The decomposition temperature of carbon powder is low, and it decomposes into CO at low temperature 2 , is greatly affected by the temperature of the kiln, if the temperature of the feeding port is high, the use effect will be reduced
②The decomposition temperature of Glauber’s salt is above 1400°C, and it cannot play its due role in kilns with energy-saving requirements due to the low temperature
Therefore, this traditional clarifier is greatly affected by the temperature of the kiln, and it needs to work in a specific temperature range.

Method used

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  • Composite fining agent for glass and preparation method thereof
  • Composite fining agent for glass and preparation method thereof
  • Composite fining agent for glass and preparation method thereof

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preparation example Construction

[0020] A preparation method for glass composite clarifying agent, comprising the following steps:

[0021] 1) mixing and stirring cerium oxide or its precursor with calcite to obtain a semi-finished composite clarifier;

[0022] 2) Mixing the semi-finished compound clarifying agent with flux, sodium sulfate and carbon powder to obtain the glass compound clarifying agent.

[0023] Preferably, the mixing in step 2) is pneumatic mixing.

[0024] Preferably, the number of compressed air pulses for step 2) pneumatic mixing is 20-40 times.

[0025] Further, a preparation method of a glass composite clarifier, comprising the following steps:

[0026] 1) adding cerium oxide or its precursor to calcite, stirring evenly, to obtain a semi-finished composite clarifier;

[0027] 2) Add flux, sodium sulfate and carbon powder before use, adjust the amount of flux and redox atmosphere, weigh all the raw materials through the batching system, put them into the pneumatic mixing delivery tank...

Embodiment 1

[0030] A kind of composition of the raw material of glass composite clarifier as described in table 1.

[0031] The raw material composition of table 1 embodiment 1 glass composite clarifying agent

[0032] raw material

Embodiment 2

[0034] A kind of composition of the raw material of glass composite clarifier as described in table 2.

[0035] The raw material composition of table 2 embodiment 2 glass composite clarifying agent

[0036] raw material

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Abstract

The invention discloses a composite fining agent for glass and a preparation method thereof. The fining agent for glass comprises the following components: calcite, a fluxing agent, cerium oxide or a precursor thereof, anhydrous sodium sulfate and carbon powder. The invention also discloses a preparation method of the composite fining agent for glass. The composite fining agent for glass has the characteristics of high cleanliness, no toxicity, wide applicable temperature range, low loss, high stability and favorable fining effects.

Description

technical field [0001] The invention relates to a glass composite clarifier and a preparation method thereof. Background technique [0002] In recent years, due to the development of circuit boards in the direction of lighter and thinner, glass cloth as the substrate of circuit boards requires the number of hollow fibers to be controlled at a very low level to meet the requirements of electrical performance and avoid " fire" phenomenon. The alkali-free continuous glass fiber yarn as the raw material of glass cloth is generally drawn from alkali-free (E) glass. When producing the alkali-free continuous glass fiber yarn, the number of glass bubbles is required to be controlled at a very low level. The alkali-free continuous glass fiber yarn industry generally uses Glauber's salt and carbon powder (hereinafter referred to as traditional clarifier) ​​as glass clarifiers to eliminate air bubbles. In past studies, it was believed that the combination of oxidant Glauber's salt and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C1/00
Inventor 何燕生
Owner GUANGZHOU ZHONGXIN CENTURY FIBERGLASS
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