Salt bath purification additive material and use method thereof

An additive material and salt bath technology, applied in the field of salt bath purification of additive materials, can solve the problems of high production cost, environmental damage, and inability to recycle the usage amount, and achieve fast, convenient and quick removal, ensure stability, and reduce impact. Effect

Pending Publication Date: 2021-02-23
CHONGQING XINJING SPECIAL GLASS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the process of glass processing, these materials should not be recycled and need to be used in huge quantities, which will not only cause great damage to the environment, but also lead to high production costs

Method used

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  • Salt bath purification additive material and use method thereof
  • Salt bath purification additive material and use method thereof
  • Salt bath purification additive material and use method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1 to 6

[0049] In Examples 1-6, 6 kinds of salt-bath purification additive materials with different components and forms were prepared by using the commercially available products as raw materials and using the preparation method mentioned above. The components and forms of the salt bath purification additive materials in Examples 1 to 6 are shown in Table 1.

[0050] Table 1

[0051]

[0052] In the table, β refers to the content of alkali metal oxides in the salt bath purification additive material and SiO 2 The ratio of the content; θ refers to the content of the alkali metal oxide in the salt bath purification additive material and P 2 o 5 and B 2 o 3 The content and the ratio of .

[0053] Purification experiments 1 to 6

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Abstract

The invention discloses a salt bath purification additive material and a use method thereof. The salt bath purification additive material comprises the following components in percentage by mole: 30-60 mol% of alkali metal oxide, 20-50 mol% of SiO2 and 8-25 mol% of other oxides. The use method comprises the following steps: S1, providing a to-be-purified salt bath; S2, adding the salt bath purification additive material into the to-be-purified salt bath; S3, taking out the salt bath purification additive material after the salt bath purification additive material reacts with the to-be-purifiedsalt bath for a certain time. S4, putting the salt bath purification additive material taken out in the step S3 into a pure sodium salt bath; and S5, after the salt bath purification additive material reacts with the pure sodium salt bath for a certain time, taking out the salt bath purification additive material for next use. The salt bath purification additive material has the advantages of being capable of rapidly absorbing lithium ions and sodium ions in a salt bath, convenient and rapid to take out and capable of being repeatedly used.

Description

technical field [0001] The invention relates to the field of chemical industry, in particular to the technical field of purification of a salt bath for chemical strengthening of glass, in particular to a salt bath purification additive material and a method for using the same. Background technique [0002] In the process of placing glass in a salt bath for chemical strengthening treatment, with the prolongation of the use time of the salt bath and the increase in the number of glasses treated by the salt bath, the garbage ion Na in the salt bath + , Li + The content of glass will also increase accordingly. Although it is only at the PPM level, it is enough to seriously hinder the normal chemical tempering, resulting in a decrease in the CS value of the subsequent strengthened glass and a sharp drop in strength, making it difficult to control the quality of the final product. After the glass is chemically strengthened, the large ions in the salt bath replace the small ions i...

Claims

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Application Information

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IPC IPC(8): C03C21/00
CPCC03C21/002
Inventor 胡伟覃文城谈宝权陈芳华
Owner CHONGQING XINJING SPECIAL GLASS CO LTD
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