Method for measuring element content in ferrocolumbium alloy by X-fluorescence

A niobium-iron alloy, element content technology, applied in the direction of measuring devices, instruments, scientific instruments, etc., can solve the problems of separation, cumbersome steps, etc., and achieve the effect of improving accuracy, simple operation, and good oxidation effect

Inactive Publication Date: 2012-02-22
HBIS COMPANY LIMITED HANDAN BRANCH COMPANY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Also use the chemical wet method to determine the content of thallium, silicon, pho

Method used

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  • Method for measuring element content in ferrocolumbium alloy by X-fluorescence
  • Method for measuring element content in ferrocolumbium alloy by X-fluorescence
  • Method for measuring element content in ferrocolumbium alloy by X-fluorescence

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Reagents: lithium carbonate, anhydrous lithium tetraborate, potassium iodide, barium peroxide, mixed flux (lithium tetraborate: lithium metaborate: lithium fluoride = 65:25:10 weight ratio), all reagents used are of analytical grade or above, And dry in a drying oven at 105°C;

[0029] Ammonium iodide solution 300 g / L,

[0030] The standard samples and samples of ferroniobium were dried in a drying oven at 105°C.

[0031] The process steps are: (1) Weigh 7.0000g of lithium tetraborate and place it in a platinum crucible, add 7 drops of ammonium iodide solution as a release agent, melt it in a muffle furnace at 1000°C for 7 minutes, take it out, turn it gently while it is hot Platinum crucible, so that lithium tetraborate in molten state hangs evenly on the lower and bottom of the crucible to form a flux crucible.

[0032] (2) Weigh 0.2000g of several standard samples with a certain concentration gradient and place them in the above-mentioned crucible, then add 2.000g ...

Embodiment 2

[0043] Reagents: lithium carbonate; anhydrous lithium tetraborate, potassium iodide, barium peroxide, mixed flux (lithium tetraborate: lithium metaborate: lithium fluoride = 65:25:10); all reagents used are of analytical grade or above, and in 105 ℃ oven drying;

[0044] Ammonium iodide solution, 300 g / L;

[0045] The standard samples and samples of ferroniobium were dried in a drying oven at 105°C.

[0046] The process steps are: (1) Weigh 6.0000g of lithium tetraborate and place it in a platinum crucible, add 2 drops of ammonium iodide solution, melt it in a muffle furnace at 970°C for 5 minutes, take it out, turn it while it is hot Platinum crucible, so that lithium tetraborate in molten state hangs evenly on the lower and bottom of the crucible to form a flux crucible.

[0047] (2) Weigh 0.1000g of several standard samples with a certain concentration gradient and place them in the above-mentioned crucible, then add 1.8000g of barium peroxide, 1.0000g of mixed flux, and ...

Embodiment 3

[0057] Reagents: lithium carbonate; anhydrous lithium tetraborate, potassium iodide, barium peroxide, mixed flux (lithium tetraborate: lithium metaborate: lithium fluoride = 65:25:10); all reagents used are of analytical grade or above, and in Dry in an oven at 105°C.

[0058] Ammonium iodide solution, 300 g / L;

[0059] The standard samples and samples of ferroniobium were dried in a drying oven at 105°C.

[0060] The process steps are: (1) Weigh 9.0000g of lithium tetraborate and place it in a platinum crucible, add 10 drops of ammonium iodide solution as a release agent, melt it in a muffle furnace at 1050°C for 10 minutes, take it out, turn it gently while it is hot Platinum crucible, so that lithium tetraborate in molten state hangs evenly on the lower and bottom of the crucible to form a flux crucible.

[0061] (2) Take several standard samples 0.5000g with a certain concentration gradient and place them in the above-mentioned crucible with a certain concentration gradi...

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Abstract

The invention discloses a method for measuring an element content in a ferrocolumbium alloy by X-fluorescence. The method comprises the following steps of: (1) hanging on a wall; (2) oxidizing; (3) smelting; (4) measuring fluorescence intensity and drawing a calibration curve; and (5) preparing a glass sample sheet to be sampled, measuring the spectral line intensity of columbium, thallium, silicon and phosphorus in the glass sample sheet to be sampled, and determining the percentage content of the columbium, thallium, silicon and phosphorus in a ferroniobium sample to be tested according to the calibration curve of the step (4). The ferroniobium glass sheet is successfully prepared by hanging lithium tetraborate on the wall and selecting barium peroxide as an oxidant for high-temperature fusion under the condition of no corrosion damage to a platinum crucible and provides a proper sample for measuring by using an X-fluorescence method. After an oxidization process of raising temperature gradually is adopted in particular, a very good oxidization effect can be achieved. The method can effectively improve the analysis speed of the element content in ferroniobium and the accuracy of analysis data and has the characteristics of simple operation and practicability.

Description

technical field [0001] The invention belongs to the field of metallurgical analysis, and more specifically relates to a method for determining the content of niobium, thallium, silicon, phosphorus and other elements in ferroniobium alloys. Background technique [0002] Ferroniobium alloys are widely used in steelmaking. Adding niobium into steel as an alloying element can refine the steel grains, improve the performance of the steel, increase the strength and toughness of the steel, and accurately determine the content of primary and secondary elements in the ferroniobium, which has a certain impact on production. Guiding significance. For the measurement of niobium in ferroniobium, the national standard GB3654.1-83 or the tannic acid hydrolysis gravimetric method are commonly used. The test period of the two is long and the operation steps are cumbersome. There are also reports on the determination of niobium in ferroniobium by photometric method and ICP-AES method, which ...

Claims

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Application Information

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IPC IPC(8): G01N23/223
Inventor 李韶梅王国增梁荣刘爱霞杜彩霞郭海林
Owner HBIS COMPANY LIMITED HANDAN BRANCH COMPANY
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