Method for determining nickel, chromium, silicon, manganese and phosphor in nickel-containing pig iron

A determination method, the technology of nickel pig iron, applied in the field of inspection and testing, can solve the problems of high labor intensity, long analysis cycle, and high analysis cost, and achieve the effects of reducing analysis cost, improving detection ability, and expanding analysis means

Inactive Publication Date: 2016-04-13
ANGANG STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] For the determination of Ni, Cr, Si, Mn, and P in general pig iron, the existing technology is GB/T20125-2006 and Japanese Industrial Standard JIS_G1258-1-2007, but for the analysis of chromium content greater than 3.0 by inductively coupled plasma atomic emission spectrometry There are no corresponding

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0023] Example 1:

[0024] 1. Take 5 iron samples from each batch of materials, and drill 1 point for each iron sample. The drilled iron filings are ground by a vibrating mill, and all the ground iron filings pass through a 60-mesh standard sieve to form an analysis sample.

[0025] 2. Add 10ml of distilled water, 5ml of 65% concentrated nitric acid, 5ml of 37% concentrated hydrochloric acid to dissolve the sample in a 100ml volumetric flask containing 0.5000g of iron filings sample, filter insoluble carbides to a constant volume of 100ml.

[0026] 3. Add 0.4000g of pure iron matrix to the standard series solution.

[0027] 4. Using inductively coupled plasma atomic emission spectrometry to determine the content of Ni, Cr, Si, Mn, and P elements in nickel-containing pig iron, the analysis lines of each element are:

[0028] The wavelength of Ni element is 231.604nm;

[0029] The wavelength of Cr element is 267.716nm;

[0030] The wavelength of Si element is 251.612nm;

[0031] The waveleng...

Example Embodiment

[0034] Example 2:

[0035] 1. Take 5 iron samples from each batch of materials, and drill 1 point for each iron sample. The drilled iron filings are ground by a vibrating mill, and all the ground iron filings pass through an 80-mesh standard sieve to form an analysis sample.

[0036] 2. Add 10ml of distilled water, 5ml of 65% concentrated nitric acid, 5ml of 37% concentrated hydrochloric acid to dissolve the sample in a 100ml volumetric flask containing 0.5000g of iron filings sample, filter insoluble carbides to a constant volume of 100ml.

[0037] 3. Add 0.4000g of pure iron matrix to the standard series solution.

[0038] 4. Using inductively coupled plasma atomic emission spectrometry to determine the content of Ni, Cr, Si, Mn, and P elements in nickel-containing pig iron, the analysis lines of each element are:

[0039] The wavelength of Ni element is 231.604nm;

[0040] The wavelength of Cr element is 267.716nm;

[0041] The wavelength of Si element is 251.612nm;

[0042] The wavelen...

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Abstract

The invention relates to a method for determining nickel, chromium, silicon, manganese and phosphor in nickel-containing pig iron. The method is characterized in that five iron samples are taken in each batch of material, one spot is drilled on each iron sample, the drilled iron scraps are ground and pass through a 60-80-mesh target standard sieve; 10 ml of distilled water, 5 ml of concentrated nitric acid (65%) and 5 ml of concentrated hydrochloric acid (37%) are added in order in a 100 ml volumetric flask filled with 0.5000 g of the iron scrap sample for solving the sample, insoluble carbide is filtered and volume is metered to 100 ml; 0.4000 g of a pure iron matrix is added in a standard series solution; an inductively coupled plasma atomic emission spectrometry is used for determining the content of the elements of Ni, Cr, Si, Mn and P in the nickel-containing pig iron for analysis, an optimal analytical line for each element can be selected; spectrum interference of each coexisted element to the analytical line is inspected, and correction of an interference line in the analytical line can be carried out. The method is capable of shortening analysis period, mitigating labor intensity, increasing control capability and detection capability of the analysis result, reducing an application amount of a chemical reagent, reducing the waste liquid discharge, and reducing the analysis cost.

Description

technical field [0001] The invention belongs to the technical field of inspection and testing, and in particular relates to an analysis and determination method for the contents of Ni, Cr, Si, Mn and P in nickel-containing pig iron. Background technique [0002] For the determination of Ni, Cr, Si, Mn, and P in general pig iron, the existing technology is GB / T20125-2006 and Japanese Industrial Standard JIS_G1258-1-2007, but for the analysis of chromium content greater than 3.0 by inductively coupled plasma atomic emission spectrometry There are no corresponding technical standards and methods for nickel-containing pig iron. However, the existing technology has defects such as long analysis period, high labor intensity, poor quality control ability of analysis results, large amount of chemical reagents used, large amount of waste liquid discharge, and high analysis cost. Contents of the invention [0003] The invention provides a method for measuring the contents of Ni, Cr...

Claims

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Application Information

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IPC IPC(8): G01N21/73G01N1/28
Inventor 张道光王丽晖高巍李奎赵立章纪文敏
Owner ANGANG STEEL CO LTD
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