Method for measuring contents of ferrous ions and iron ions in glass

A technology of ferrous ions and ferric ions, which is applied in the field of content determination of ferrous ions and ferric ions in glass, can solve the problems of low ferrous ions and content errors, and achieve short operation time, small measurement errors and good repeatability Effect

Inactive Publication Date: 2011-04-06
WUHAN UNIV OF TECH
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Problems solved by technology

However, ferrous ions (Fe 2+ ) has absorption in the range of 400-1100nm, and with the international and domestic markets increasingly demanding the quality of deep-processed glass (generally white glass), ferrous ions (Fe 2+ ) content will be lower and lower. At this time, it is inferred that Fe 2+ The content may have a large error

Method used

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  • Method for measuring contents of ferrous ions and iron ions in glass
  • Method for measuring contents of ferrous ions and iron ions in glass
  • Method for measuring contents of ferrous ions and iron ions in glass

Examples

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example 1

[0042] Step 1: Take a float glass sheet with a thickness of 3.96mm, clean it with an ultrasonic cleaner, and dry the cleaned glass sheet;

[0043] The second step: Utilize the ultraviolet-visible spectrophotometer to measure the absorption spectrum of the glass sheet in the range of 350-1100nm, and save the data of the absorption spectrum as an Excel spreadsheet file (extension: .xls);

[0044] The third step: use data processing software such as MS Excel, Origin, etc. to open the spreadsheet file in the second step (this patent uses Origin as an example), put the wavelength into the X column, and put the absorbance data into the Y column. Select the absorbance column data, use the set column values ​​function to divide the absorbance data by the thickness of the glass sheet to obtain the absorbance per unit thickness of the glass sheet, use the Plot-line command to draw, and obtain the spectral curve of the relationship between the wavelength and the absorbance of the glass sh...

example 2

[0048] Step 1: Take a high-speed iron glass sheet with a thickness of 1.58mm, clean it with an ultrasonic cleaner, and dry the cleaned glass sheet;

[0049] The second step: Utilize the ultraviolet-visible spectrophotometer to measure the absorption spectrum of the glass sheet in the range of 350-1100nm, and save the data of the absorption spectrum as an Excel spreadsheet file (extension: .xls);

[0050] The third step: use data processing software such as MS Excel, Origin, etc. to open the spreadsheet file in the second step (this patent uses Origin as an example), put the wavelength into the X column, and put the absorbance data into the Y column. Select the absorbance column data, use the set column values ​​function to divide the absorbance data by the thickness of the glass sheet to obtain the absorbance per unit thickness of the glass sheet, use the Plot-line command to draw, and obtain the spectral curve of the relationship between the wavelength and the absorbance of th...

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Abstract

The invention discloses a method for measuring contents of ferrous ions and iron ions in glass, comprising the following steps: measuring the absorption spectrum of a provided glass sheet within the waveband range of 350-1100nm by using an ultraviolet and visible spectrophotometer; dividing the absorbency data in the absorption spectrum by the thickness of the glass sheet to obtain the absorbency of glass sheet with unit thickness, thereby further obtaining the spectrum curve of relationship between the wavelength in the absorption spectrum and the absorbency of the thickness of the glass sheet; carrying out smoothing treatment and basic line correction on the spectrum curve successively; and carrying out area integration on the spectrum curve after line correction respectively within the waveband range of 370-400nm and within the waveband range of 520-1100nm, and calculating the contents of iron ions and ferrous ions according to corresponding integrated areas. By using the method, the contents of iron ions and ferrous ions can be measured simultaneously, the operation is simple and fast, data processing is simple and convenient, and the reliability and the repeatability are good, therefore, the method can meet on-line monitoring requirement of glass and is applicable to industrial popularization.

Description

technical field [0001] The present invention relates to a kind of ferrous ion (Fe) in glass 2+ ) and iron ions (Fe 3+ ) content determination method. Background technique [0002] Iron (Fe) is an important factor affecting the quality of glass. Iron in glass has ferrous ions (Fe 2+ ) and iron ions (Fe 3+ ) in two forms. Ferrous ion (Fe 2+ ) has a strong coloring ability and is the main factor affecting the whiteness of glass. In addition, ferrous ions (Fe 2+ ) can affect the radiation heat transfer of glass, thereby affecting the temperature distribution of the glass melt in the glass melting furnace. In addition, ferrous ions (Fe 2+ ) and iron ions (Fe 3+ ) reflects the redox state of the glass melt. Therefore, monitoring and controlling ferrous ions (Fe 2+ ) content and ferrous ion (Fe 2+ ) and iron ions (Fe 3+ ) ratio is the key factor to optimize the glass production process, and it plays a very important role in eliminating air bubbles in the glass and imp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/33
Inventor 刘小青谢峻林何峰方德
Owner WUHAN UNIV OF TECH
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