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Method for measuring contents of potassium, sodium, lead, zinc, arsenic and copper in ferrous metallurgy materials

A determination method and technology of iron and steel metallurgy, applied in the field of determination of arsenic, sodium, potassium, zinc, lead and copper content in iron and steel metallurgical materials, can solve the problem of difficult to meet the requirements of multi-element analysis, complicated photometric steps, and large reagent consumption and other issues, to achieve significant economic and social benefits, expand coverage, and be easy to master.

Inactive Publication Date: 2015-09-09
SHANDONG IRON & STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the steps of the photometric method are cumbersome, the operating conditions are difficult to control, and the reagent consumption is large; the atomic absorption spectrometry is relatively simple, but due to the narrow measurement range and only single element determination, it is difficult to meet the requirements of multi-element analysis of a large number of samples; X-ray fluorescence Although the spectroscopic method is simple and fast, it is easily affected by the matrix, and is only suitable for a single species with a similar matrix, and a complete set of standard substances is required to establish a curve

Method used

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  • Method for measuring contents of potassium, sodium, lead, zinc, arsenic and copper in ferrous metallurgy materials

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] 1) Get 0.1g of iron ore that does not contain potassium, sodium, lead, zinc, arsenic and copper as a matrix sample, then utilize the mixed acid dissolution of hydrochloric acid, hydrofluoric acid and perchloric acid, the addition of the hydrochloric acid Amount is 55ml / g sample; The addition amount of described hydrofluoric acid is 15ml / g sample; The addition amount of described perchloric acid is 25ml / g sample, obtains the first sample solution, then the second The first sample solution was evaporated to dryness, then added twice distilled water and evaporated to dryness three times, and then dissolved with hydrochloric acid, the amount of hydrochloric acid added was 55ml / g sample, and the acidity was adjusted at the same time to obtain the second sample solution, and the second solution was divided into 6 equal parts.

[0047] Then, 6 mixed solutions were prepared, the mixed solutions contained potassium, sodium, lead, zinc, arsenic and copper elements with known conc...

Embodiment 2

[0050] 1) Get 0.1g of iron ore that does not contain potassium, sodium, lead, zinc, arsenic and copper as a matrix sample, then utilize the mixed acid dissolution of hydrochloric acid, hydrofluoric acid and perchloric acid, the addition of the hydrochloric acid Amount is 45ml / g sample; The addition amount of described hydrofluoric acid is 25ml / g sample; The addition amount of described perchloric acid is 35ml / g sample, obtains the first sample solution, then the second The first dissolved sample solution was evaporated to dryness, then added twice-distilled water and evaporated to dryness three times, and then dissolved with hydrochloric acid. The amount of hydrochloric acid added was 45ml / g sample, and the acidity was adjusted simultaneously to obtain the second dissolved sample solution. 6 equal parts.

[0051]Then, 6 mixed solutions were prepared, the mixed solutions contained potassium, sodium, lead, zinc, arsenic and copper elements with known concentrations, and the conc...

Embodiment 3

[0054] 1) Get 0.1g of iron ore that does not contain potassium, sodium, lead, zinc, arsenic and copper as a matrix sample, then utilize the mixed acid dissolution of hydrochloric acid, hydrofluoric acid and perchloric acid, the addition of the hydrochloric acid Amount is 50ml / g sample; The addition amount of described hydrofluoric acid is 20ml / g sample; The addition amount of described perchloric acid is 30ml / g sample, obtains the first sample solution, then the second The first sample solution was evaporated to dryness, then added twice distilled water and evaporated to dryness three times, and then dissolved with hydrochloric acid. The amount of hydrochloric acid added was 50ml / g sample, and the acidity was adjusted at the same time to obtain the second sample solution. The second solution was divided into 6 equal parts.

[0055] Then, 6 mixed solutions were prepared, the mixed solutions contained potassium, sodium, lead, zinc, arsenic and copper elements with known concentr...

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Abstract

The invention discloses a method for measuring contents of potassium, sodium, lead, zinc, arsenic and copper in ferrous metallurgy materials. The method includes drawing working curves of standard liquor of the potassium, the sodium, the lead, the zinc, the arsenic and the copper; measuring the light intensity of sample dissolving liquor by the aid of an inductive coupling plasma emission spectrometer; acquiring the contents of the potassium, the sodium, the lead, the zinc, the arsenic and the copper according to the working curves of the standard liquor of the potassium, the sodium, the lead, the zinc, the arsenic and the copper and the light intensity of the sample dissolving liquor. The method has the advantages that a technology for processing samples, a technology for matching matrixes and parameters of the spectrometer are optimized, accordingly, the diversified materials can be measured in ferrous metallurgy procedures, the contents of diversified elements such as the potassium, the sodium, the lead, the zinc, the arsenic and the copper in the materials can be simultaneously measured, the method is wide in measuring range, high in precision and accuracy, simple in operation and easy to master, and obvious economic and social benefits can be created.

Description

technical field [0001] The invention relates to the technical field of iron and steel metallurgical element detection, in particular to a method for determining the contents of potassium, sodium, lead, zinc, arsenic and copper in iron and steel metallurgical materials. Background technique [0002] The raw material for blast furnace ironmaking is mainly iron ore. The alkali metals in iron ore are mainly potassium and sodium. The blast furnace itself has a certain ability to discharge alkali, and the content of alkali metal has little effect on the blast furnace within the control range. However, when the content of alkali metal in the iron ore entering the furnace is too much, which exceeds the alkali capacity of the blast furnace, alkali metal enrichment will be formed, which will easily cause the softening temperature to drop, and the reflow zone to move upward, which is not conducive to the development of indirect reduction, resulting in an increase in the coke ratio. h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/68
Inventor 赵贵芬徐增芹魏纯玉耿厚安陈俊江高帅张海燕唐海燕崔晶
Owner SHANDONG IRON & STEEL CO LTD
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