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Comparison detection method for measuring content of diboron trioxide in metallurgical slag system

A technology of boron trioxide and detection method, which is applied in chemical method analysis, measuring device, chemical analysis by titration method, etc., can solve problems such as high cost, cumbersome process, interference of titration results, etc., and achieves easy operation and detection results. accurate effect

Pending Publication Date: 2022-03-29
NORTHEASTERN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In the method for measuring the content of diboron trioxide in zinc-lead glass, it needs to add carbonate to separate other impurity elements, and also needs to add Ca-EDTA to complex the amphoteric elements zinc and lead. Carbonates, which can themselves interfere with titration results if not handled properly in subsequent steps
[0005] In the detection method of boron oxide in glass, it needs to add alkaline flux for heating and melting, and then use acid to neutralize the alkaline flux, so the required cost is relatively high, and it also needs to be added in the subsequent steps If the amount of carbonate and complexing agent is not handled properly, it may interfere with the titration result

Method used

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  • Comparison detection method for measuring content of diboron trioxide in metallurgical slag system
  • Comparison detection method for measuring content of diboron trioxide in metallurgical slag system
  • Comparison detection method for measuring content of diboron trioxide in metallurgical slag system

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Embodiment 1

[0028] Get 0.3g of rare earth-containing metallurgical slag CaO-Al in the present embodiment 2 o 3 -Ce 2 o 3 -10%B 2 o 3 Slag sample 1 was placed in an Erlenmeyer flask, 40ml of acid solution was added thereto, and it was placed on a magnetic stirrer while heating and stirring until the slag sample was completely dissolved, then removed and cooled to room temperature. Take 5ml of the cooled solution in a beaker, add distilled water to dilute it to 50ml, mix it with a glass rod and use it as the solution to be tested. Take 10ml of the solution to be tested in an Erlenmeyer flask, add 2 drops of bromocresol green-methyl red mixed indicator, due to the presence of free acid, the solution pH 5.2, the volume of sodium hydroxide standard solution consumed in this process is not counted. Add 2g mannitol to the solution to strengthen boric acid electrolysis, because mannitol combines with boric acid to generate H + , so the solution changed from green to dark red at this time. ...

Embodiment 2

[0039] Get 0.3g of rare earth-containing metallurgical slag CaO-Al in the present embodiment 2 o 3 -Ce 2 o 3 -15%B 2 o 3 Slag sample 2 was placed in an Erlenmeyer flask, 40ml of acid solution was added thereto, and it was placed on a magnetic stirrer while heating and stirring until the slag sample was completely dissolved, then removed and cooled to room temperature. Take 10ml of the cooled solution in a beaker, add distilled water to dilute it to 50ml, mix it with a glass rod and use it as the solution to be tested. Take 10ml of the solution to be tested in a conical flask, add 2 drops of bromocresol green-methyl red mixed indicator, neutralize the free acid in the solution with 0.1mol / L sodium hydroxide standard solution until the solution is just green, The volume of sodium hydroxide standard solution consumed in this process is not counted. Add 3g of mannitol to the solution to strengthen boric acid electrolysis, and the solution changes from green to dark red again...

Embodiment 3

[0042] Get 0.3g of rare earth-containing metallurgical slag CaO-Al in the present embodiment 2 o 3 -Ce 2 o 3 -5%B 2 o 3 Slag sample 3 was placed in a conical flask, 40ml of acid solution was added thereto, and it was placed on a magnetic stirrer while heating and stirring until the slag sample was completely dissolved, then removed and cooled to room temperature. Take 5ml of the cooled solution in a beaker, add distilled water to dilute it to 25ml, mix it with a glass rod and use it as the solution to be tested. Take 10ml of the solution to be tested in a conical flask, add 2 drops of bromocresol green-methyl red mixed indicator, neutralize the free acid in the solution with 0.1mol / L sodium hydroxide standard solution until the solution is just green, The volume of sodium hydroxide standard solution consumed in this process is not counted. Add 2g of mannitol to the solution to strengthen boric acid electrolysis, and the solution changes from green to dark red again. Add...

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Abstract

The invention belongs to the technical field of metallurgical analysis, and provides a contrast detection method for determining the content of diboron trioxide in a metallurgical slag system. Aiming at the special component characteristics of the metallurgical slag system, the invention provides a contrast detection analysis method to eliminate the interference of amphoteric elements and other factors on the titration result in the titration process so as to realize the accurate detection of the content of diboron trioxide in the metallurgical slag system. The method does not need to introduce other reagents, is relatively low in cost, simple, convenient and rapid to operate and accurate and reliable in determination result, and provides a way for determining the content of the diboron trioxide in the metallurgical slag system.

Description

technical field [0001] The invention relates to the technical field of metallurgical analysis, in particular to a comparative detection method for determining the content of diboron trioxide in metallurgical slag systems. Background technique [0002] B 2 o 3 It is an acidic oxide that exists in the form of grids in the slag, adding B to the slag 2 o 3 It can significantly improve the vitreous properties of slag, loosen the material structure, thereby reducing the viscosity of slag and inhibiting crystal precipitation. In addition, B 2 o 3 The melting point is low (450°C), which can significantly increase the fluidity of slag and improve the kinetic conditions for dissolving and absorbing molten steel inclusions. Since the boron-containing slag plays an extremely important role in the metallurgical production process, the B in the slag 2 o 3 The level of content will directly affect the quality of its metallurgical properties, so the B in the metallurgical slag syste...

Claims

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Application Information

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IPC IPC(8): G01N21/79G01N31/16
CPCG01N21/79G01N31/162
Inventor 孙丽枫相泰余
Owner NORTHEASTERN UNIV
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