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Method for determining impurity content in high-titanium slag

A technology of impurity content and high titanium slag, applied in the field of metallurgy and chemical industry, can solve the problems of affecting the accurate determination of the components to be measured, unsuitable for the decomposition measurement of high titanium slag, poor melting effect of high titanium slag, etc., so as to reduce the effect of salt and acid. effect, simple operation, and consistent effect

Inactive Publication Date: 2011-11-23
WUHAN IRON & STEEL (GROUP) CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the content of titanium dioxide in the high titanium slag is about 80%. If it is measured by hydrochloric acid leaching, the sample solution will be severely hydrolyzed, which will affect the accurate determination of the components to be tested, and its flux sodium carbonate and sodium tetraborate have high melting temperatures, which are difficult for high titanium slag. The melting effect of slag is poor, so it is not suitable for the determination of high titanium slag decomposition

Method used

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  • Method for determining impurity content in high-titanium slag
  • Method for determining impurity content in high-titanium slag
  • Method for determining impurity content in high-titanium slag

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Experimental program
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Effect test

Embodiment 1

[0026] (1) Melting of the sample to be tested: Weigh 0.2000 g of a sample to be tested and place it in a platinum crucible. The amount of the sample to be tested is generally related to the uniformity, representativeness and subsequent The amount of reagent used in the analysis is directly related to the volume of constant volume dilution. For powder raw material samples, if the samples to be tested are uniformly prepared and representative, for the determination of components with different orders of magnitude, the sample size to be tested is generally said to be 0.1g to 1g. In the determination of inductively coupled plasma spectrometry, usually for the determination of components greater than 0.1% in the sample to be tested, the sample weight is set at 0.1g to 0.5g. For the conventional content of impurities in high titanium slag, iron, silicon dioxide, The determination of dialuminum, calcium oxide, magnesium oxide, manganese oxide, etc. is sufficient to achieve its determ...

Embodiment 2

[0032] (1) Melting of the sample to be tested: Weigh 0.1000 g of a sample to be tested and place it in a platinum crucible; The mixed flux is mixed; after mixing, it is melted in a high-temperature furnace at 950°C for 30 minutes, taken out, and cooled to obtain a frit.

[0033] (2) Leaching and dilution of the frit to be tested: Clean the outer wall of the crucible, add 100mL sulfuric acid (4+96) to a 250mL beaker, heat, leach the frit, and dilute to volume with sulfuric acid (4+96) In a 200mL volumetric flask, pipette 10.00mL to a 100mL volumetric flask to obtain the solution to be tested.

[0034] (3) Preparation of working curve standard solution: take a portion of titanium dioxide reference reagent (more than 99.99% purity) of 90% sample size to be tested, carry out melt leaching under the same conditions as the sample to be tested, and constant volume at In the 200mL volumetric flask, take five parts of 10.00mL and place them in five 100mL volumetric flasks respectively...

Embodiment 3

[0038] (1) Melting of the sample to be tested: Weigh a portion of 0.5000 g of the sample to be tested and place it in a platinum crucible; The mixed flux is mixed; after mixing, it is melted in a high-temperature furnace at 1150°C for 10 minutes, taken out, and cooled to obtain a frit.

[0039] (2) Leaching and dilution of the sample frit: wash the outer wall of the crucible, add 120mL sulfuric acid (6+94) into a 250mL beaker, heat, leach the frit, dilute with sulfuric acid (6+94) to 200mL In the volumetric flask, pipette 10.00mL and dilute it into a 100mL volumetric flask to obtain the solution to be tested.

[0040] (3) Preparation of working curve standard solution: Weigh a portion of titanium dioxide reference reagent (above 99.99% purity) with 60% of the sample amount, carry out melt leaching under the same conditions as the sample, and set the volume in a 200mL volumetric flask . Take five portions of 10.00mL and place them in five 100mL volumetric flasks respectively,...

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Abstract

The invention discloses a method for determining the impurity content in high-titanium slag, and belongs to the metallurgical chemical field. According to the method, a high-titanium slag sample is molten by a mixed flux; a frit is leached by a sulfuric acid solution to prepare a test solution; and the impurity component in the diluted high-titanium slag test solution is determined by an inductive coupling plasma emission spectrometer. With the invention, the content of the impurity component in high-titanium slag can be determined accurately, simply, and rapidly.

Description

technical field [0001] The invention belongs to the field of metallurgy and chemical industry. Background technique [0002] In order to improve the comprehensive utilization value of vanadium-titanium magnetite and its resources, it is necessary to accurately quantitatively determine the composition of high-titanium slag that will be used as metallurgical raw materials with complex composition and large changes in impurity content to improve its utilization rate. At present, chemical analysis methods are mostly used for the determination of Si, Al, Ca, Mg, Fe and other impurity elements in high-titanium slag. There are many interference factors in the determination, long analysis process, and many reagents are consumed. Change or find a suitable method at any time. [0003] So far, there have been no reports on the application of ICP-AES to the determination of Si, Al, Ca, Mg and other impurity elements in high-titanium slag. In the literature, Yang Hongchun of Panzhihua ...

Claims

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Application Information

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IPC IPC(8): G01N21/73G01N1/28G01N1/44G01N1/38
Inventor 闻向东邵梅赵希文谢芬夏念平文斌周千学杨艳杨芸
Owner WUHAN IRON & STEEL (GROUP) CORP
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