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Method for accurately and efficiently, flexibly and stably determining content of copper element in natural micro-alloy iron powder

A technology of microalloy iron powder and determination method, which is applied in the preparation of test samples, thermal excitation analysis, material excitation analysis, etc., and can solve the problems of affecting the health of operators, polluting the environment with waste acid and alkali, and cumbersome operation steps, etc. problem, to achieve the effect of shortening the detection cycle, reducing labor intensity and improving detection efficiency

Active Publication Date: 2016-05-04
WUKUN STEEL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These methods generally have cumbersome operation steps, require more chemical reagents, and some also use organic reagents, which affect the health of operators, pollute the environment with waste acid and alkali, and have long analysis cycles, making it difficult to meet production needs.

Method used

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  • Method for accurately and efficiently, flexibly and stably determining content of copper element in natural micro-alloy iron powder
  • Method for accurately and efficiently, flexibly and stably determining content of copper element in natural micro-alloy iron powder
  • Method for accurately and efficiently, flexibly and stably determining content of copper element in natural micro-alloy iron powder

Examples

Experimental program
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Effect test

Embodiment 1

[0033] ——Determination of copper element content in natural microalloyed iron powder

[0034] (1) Prepare the standard solution of the copper element to be measured

[0035] Weigh 1.0000g of copper with a purity greater than 99.9%, add hydrochloric acid solution at an amount of 40ml / g sample, then add hydrogen peroxide dropwise at an amount of 5ml / g sample, heat at 175°C until the sample dissolves, and then boil ;Put the obtained solution into a 1000ml volumetric flask, dilute to the mark with water, and shake up to obtain a 1.00mg / ml copper element solution; draw 25ml of the copper element solution into a 1000ml volumetric flask, dilute to the scale with water, and shake up , that is, 25.00μg / ml copper standard solution.

[0036] (2) Draw the working curve of the copper element to be measured

[0037] Weigh 5 parts of 0.5000g of iron with a purity greater than 99.9% and place them in five 100ml volumetric flasks, respectively add 20ml of nitric acid solution, and heat at 17...

Embodiment 2

[0043] ——Determination of copper element content in natural microalloyed iron powder

[0044] (1) Prepare the standard solution of the copper element to be measured

[0045] With embodiment 1.

[0046] (2) Draw the working curve of the copper element to be measured

[0047] With embodiment 1.

[0048] (3) Determination of copper element content in the natural microalloy iron powder sample to be tested

[0049] In 0.5000g of natural microalloyed iron powder to be tested, add nitric acid solution in an amount of 30ml / g sample, and heat at 200°C until the sample is dissolved; the added nitric acid solution consists of nitric acid: water = 1:3 Prepared by volume ratio. After the sample is completely dissolved, add water to make up to 100ml according to the dosage of 200ml / g sample, and obtain the sample solution of the copper element to be tested.

[0050] The spectral line intensity of the copper element in the sample solution was determined to be 5683 with a 6300 model indu...

Embodiment 3

[0052] ——Determination of copper element content in natural microalloyed iron powder

[0053] (1) Prepare the standard solution of the copper element to be measured

[0054] With embodiment 1.

[0055] (2) Draw the working curve of the copper element to be measured

[0056] With embodiment 1.

[0057] (3) Determination of copper element content in the natural microalloy iron powder sample to be tested

[0058] In 0.5000g of natural microalloy iron powder to be tested, add nitric acid solution in an amount of 50ml / g sample, and heat at 150°C until the sample dissolves; the added nitric acid solution consists of nitric acid: water = 1:3 Prepared by volume ratio. After the sample is completely dissolved, add water to make up to 100ml according to the dosage of 200ml / g sample, and obtain the sample solution of the copper element to be tested.

[0059] The spectral line intensity of the copper element in the sample solution was determined to be 5683 with a 6300 model inductive...

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Abstract

The invention discloses a method for accurately and efficiently, flexibly and stably determining the content of a copper element in natural micro-alloy iron powder. The determination method comprises the following steps: adding a nitric acid solution into 0.5000g of a natural micro-alloy iron powder sample to be detected according to the use amount of 30-50 milliliters per gram of the sample; heating at 150-200 DEG C until the sample is dissolved; adding water according to the use amount of 200 milliliters per gram of the sample until the constant volume is 100mL to obtain a test sample solution for detecting the copper element; determining copper element spectral line intensity of the test sample solution by using an inductively coupled plasma atomic emission spectrometry; and obtaining a corresponding copper element content value from a standard working curve of the copper element according to the spectral line intensity. The determination method has the advantages that sample preparation is simple, the dosage of chemical reagents is less, the treatment cost of waste liquid is reduced, pollution to the environment and influences on body health of detectors are reduced, a detection period is short and the efficiency is high; and a testing analysis result has good stability, repeatability and accuracy; and rapid determination of the content of the copper element of the natural micro-alloy iron powder on a large scale can be realized, and real-time monitoring data are provided for melting production.

Description

technical field [0001] The invention belongs to the technical field of analysis and testing of metallurgical materials, and in particular relates to an accurate, efficient, sensitive and stable method for measuring copper element content in natural microalloy iron powder. Background technique [0002] Natural micro-alloyed iron powder is a brand new powder metallurgy iron powder, which has a series of advantages that other iron powders cannot match: due to the use of unique vanadium-titanium magnetite as raw material, iron powder naturally has a small amount of vanadium, The alloy elements of titanium, nickel, cobalt, chromium and copper make the natural microalloy iron powder products have more excellent mechanical properties than other iron powder products: due to the unique catalytic reduction grinding process, the mirror of natural microalloy iron powder The shape of the lower particles is a unique irregular pod shape, which makes the iron powder have unusual formability...

Claims

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Application Information

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IPC IPC(8): G01N21/73G01N1/28
CPCG01N1/28G01N21/73
Inventor 曾海梅
Owner WUKUN STEEL