Carbon-free low mirabilite plate glass

A flat glass and glass technology, applied in the field of soda lime silicate flat glass, can solve the problems of increasing the batching time and increasing the power consumption, and achieve the effects of increasing the batching speed, reducing the power consumption and saving the batching time.

Inactive Publication Date: 2016-01-20
中国建材桐城新能源材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0017] ②Increased batching time
When Glauber's salt and coal powder are pre-mixed in a small mixer, the time for each batch of ingredients is increased by about 3 minutes, and the power consumption is increased at the same time

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] For ultra-clear rolled glass in carbon-free and low-glauberite flat glass, the weight percentage of raw materials in the batch is as follows:

[0046] materials silica sand soda ash Calcite dolomite Aluminum powder Glauber's salt sodium nitrate clarifying agent Proportion (wt.%) 59～60 18～20 5～12 5～14 0.9～1.6 0.4～0.6 0.6～0.8 0.15～0.3

[0047] The weight percentages of the ultra-clear rolled glass components produced by the above-mentioned batch materials through conventional processes are shown in the following table

[0048] Element SiO 2 Al 2 o 3 Fe 2 o 3 CaO MgO Na 2 o Sb 2 o 3 SO 3 total Content (wt.%) 72.21 1.25 0.0090 9.02 3.31 13.80 0.20 0.20 100%

Embodiment 2

[0050] The weight percentage of raw materials in common float glass batch is as follows

[0051] materials silica sand soda ash limestone dolomite Feldspar Glauber's salt Proportion (wt.%) 59～60 18～20 5～8 12～15 4～6 0.8～1.2

[0052] Note: The chemical composition of soda ash is Na 2 CO 3 , decomposed into Na 2 CO 3 →Na 2 O+CO 2 ↑;

[0053] The chemical composition of Glauber's salt is Na 2 SO 4 , decomposed into Na 2 SO 4 →Na 2 O+SO 2 ↑;

[0054] Sodium feldspar main components: Na 2 O·Al 2 o 3 ·6SiO2 2 .

[0055] The weight percentages of common float glass components produced by the above-mentioned batch materials through conventional processes are shown in the following table

[0056] Element SiO 2 al 2 o 3 Fe 2 o 3 CaO MgO Na 2 O+K 2 o SO 3 total Content (wt.%) 72.30 1.0 0.10 8.45 4.0 13.95 0.20 100%

[0057] Comparison of performance between the present invention an...

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PUM

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Abstract

The invention discloses a carbon-free low mirabilite plate glass. The carbon-free low mirabilite plate glass is prepared from batches for forming sodium calcium silicate plate glass, the content of carbon powder in the batches is 0, and the addition amount of mirabilite in the batches is calculated by using the weight proportion of sodium oxide generated by mirabilite in total sodium oxide in finished glass of 2.0-2.5wt.%. The discharge amount of SO2, S and CO2 in the production process is reduced in order to protect the environment.

Description

technical field [0001] The invention relates to a soda-calcium silicate flat glass, in particular to a carbon-free low-nitrate sodium-calcium-calcium silicate flat glass, which can be widely used in soda-calcium Silicate flat glass production. Background technique [0002] Usually in the production of soda lime silicate flat glass, in order to promote the melting and clarification of the glass, a certain amount of Glauber's salt must be added to the raw material batch. Na in traditional finished glass composition 2 O In addition to the introduction of soda ash, 3.0-5.0wt.% Glauber's salt must be introduced, and when introducing Glauber's salt, carbon powder with a proportion of 3.0-6.0wt.% of Glauber's salt should be introduced. [Note: Na 2 The amount of O accounts for the composition of the finished glass. Na is introduced from soda ash, Glauber's salt and albite, etc. 2 The percentage of total O content is thenardite content. That is: Glauber's salt content (%) = [Na ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C6/04C03C3/087
Inventor 杨镇远杨京安
Owner 中国建材桐城新能源材料有限公司
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