Method for measuring trace elements in high titanium high boiler slag

A medium and trace element, high titanium blast furnace slag technology, applied in material excitation analysis, thermal excitation analysis, etc., can solve the problems of incomplete sample decomposition, inaccurate measurement results, low measurement results, etc., and achieve the dosage of reagents and samples. less, shorten the analysis time, overcome the effect of interference

Inactive Publication Date: 2009-01-21
WUHAN IRON & STEEL (GROUP) CORP
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Problems solved by technology

[0004] However, for the high-titanium blast furnace slag produced during the smelting process of vanadium-titanium magnetite, which contains high titanium content, and the content of silicon, aluminum, calcium, and magnesium in the slag is high, when the sample is treated by th

Method used

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  • Method for measuring trace elements in high titanium high boiler slag
  • Method for measuring trace elements in high titanium high boiler slag
  • Method for measuring trace elements in high titanium high boiler slag

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Experimental program
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Effect test

Embodiment 1

[0033] 1. Use the instrument:

[0034] Inductively coupled plasma atomic emission spectrometer (ICP-AES), model: TJA

[0035] 2. Use reagents:

[0036] The water used in the experiment was deionized water, and the chemical reagents were of analytical grade.

[0037] Iron, manganese, vanadium, phosphorus, aluminum, calcium, magnesium standard stock solution: use national standard reagent (GBW), the concentration is 1mg / mL. When measuring, add a certain amount of aluminum, calcium and magnesium standard solutions to the reagent blank, then add standard solutions of different concentrations of measurement elements, and set the volume to 250mL to obtain a mixed standard solution, in which the concentration of iron is 6.4, 16, 32, 48μg / mL, manganese concentrations are 0.64, 1.6, 3.2, 4.8μg / mL, vanadium concentrations are 0.16, 0.32, 0.48, 0.8μg / mL, phosphorus concentrations are 0.064, 0.128, 0.320, 0.640μg / mL mL.

[0038] 3. Drawing of working curves for iron, manganese, vanadi...

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Abstract

The invention relates to a method for measuring microelements in high titanium blast furnace slag, which comprises the following steps: firstly, adopting an alkali fusion method to pre-process samples, and leading the samples to be totally conversed into soluble salt, and preparing into sample solution, secondly, preparing standard solution of iron, manganese, vanadium and phosphor with different concentrations, thirdly, respectively measuring the spectral line strength of calcium in the standard solution of iron, manganese, vanadium and phosphor with different concentrations, utilizing the concentration of elements to be the abscissa and the spectral line strength to be the longitudinal coordinate to draw a working curve, fourthly, measuring the intensity of the spectral lines of iron, manganese, vanadium and phosphor in sample solution under the condition which is the same to the step three, and calculating and assuring the content of the four elements in each sample solution according to the working curve. The invention has the advantages that the method is simple and fast, which has little dosage of agents and samples, and can simultaneously measure a plurality of elements. The method shortens analysis time, and lowers test cost.

Description

technical field [0001] The invention relates to a chemical analysis method for steelmaking slag, in particular to a method for measuring trace elements in high-titanium blast furnace slag. Background technique [0002] Blast furnace slag is an important product produced in the ironmaking process, and its chemical composition plays a very important guiding role in the control of the smelting process. At the same time, blast furnace slag is also the most abundant waste slag produced in the metallurgical industry. At present, the annual discharge of blast furnace slag in my country is about 80 million tons. A large amount of stacking of blast furnace slag will waste land resources, pollute the environment, and affect the sustainable development of the iron and steel industry. With the enhancement of people's awareness of environmental protection in recent years, the use of blast furnace slag has become more and more extensive. Now it has been used as a raw material in the manu...

Claims

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Application Information

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IPC IPC(8): G01N21/73
Inventor 李洁李杰陈士华张穗忠杨艳程运娥谢芬
Owner WUHAN IRON & STEEL (GROUP) CORP
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