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Method for determining content of six impurity elements of manganese, phosphorus, arsenic, lead, zinc and copper in permanent magnetic ferrite mixed materials

A technology for permanent magnet ferrite and impurity elements, which is applied in the field of chemical testing, can solve the problems of chemical reagents harming operators, troublesome permanent magnet composition measurement, complicated analysis steps, etc., and achieves shortened analysis period, reliable method and low analysis cost. Effect

Active Publication Date: 2014-09-24
WUKUN STEEL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The photometric method in the chemical method is used to measure the content of these impurity elements. Different analysis and detection methods are used for each element, and a large number of chemical reagents are used. The analysis steps are cumbersome and the operation time is long, which brings great difficulties to the measurement of permanent magnet components. Trouble, not only will pollute the environment, but also the chemical reagents produced will harm the operators

Method used

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  • Method for determining content of six impurity elements of manganese, phosphorus, arsenic, lead, zinc and copper in permanent magnetic ferrite mixed materials
  • Method for determining content of six impurity elements of manganese, phosphorus, arsenic, lead, zinc and copper in permanent magnetic ferrite mixed materials
  • Method for determining content of six impurity elements of manganese, phosphorus, arsenic, lead, zinc and copper in permanent magnetic ferrite mixed materials

Examples

Experimental program
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Effect test

Embodiment 1

[0056] Add 10mL of concentrated hydrochloric acid to the test sample of the permanent magnet ferrite mixture and heat to dissolve at 70°C for about 10min; Dilute to 100 mL with distilled water and shake well.

[0057] Weigh 0.1000g of cleaned and dried electrolytic manganese (above 99.9%), put it in a 250mL beaker, add 20mL of 17.5% nitric acid to dissolve, boil to drive out nitrogen oxides, take it out and cool it to 20°C, and transfer it into a 1000mL beaker In the bottle, dilute to the mark with water, mix well, coded as a, 1mL of this solution contains 100μg manganese. Weigh 0.4393g of potassium dihydrogen phosphate, which has been baked at 100°C to a constant weight and stored in a desiccator, dissolve it in an appropriate amount of water, transfer it into a 1000mL volumetric flask, dilute to the mark with water, and mix well. The code is b. 1mL of this solution contains 100μg phosphorus. Weigh 0.1320g of standard diarsenic trioxide into a 100mL beaker, slowly add about...

Embodiment 2

[0066] Add 10mL of concentrated hydrochloric acid to the permanent magnet ferrite mixture to be tested, and heat to dissolve at 80°C for about 15 minutes; add 5mL of concentrated nitric acid to the obtained sample, continue adding to dissolve completely, and cool to 25°C; Dilute the solution to 100 mL with distilled water and shake well.

[0067] Weigh 0.1000g of cleaned and dried electrolytic manganese (above 99.9%), put it in a 250mL beaker, add 20mL of 17.5% nitric acid to dissolve, boil to drive out nitrogen oxides, take it out and cool it to 25°C, and transfer it into a 1000mL beaker In the bottle, dilute to the mark with water, mix well, coded as a, 1mL of this solution contains 100μg manganese. Weigh 0.4393g of potassium dihydrogen phosphate which has been baked at 105°C to a constant weight and stored in a desiccator, dissolve it in an appropriate amount of water, transfer it into a 1000mL volumetric flask, dilute with water to the mark, mix well, and the code is b. 1m...

Embodiment 3

[0071] Add 10mL of concentrated hydrochloric acid to the permanent magnet ferrite mixture to be tested, and heat to dissolve at 90°C for about 20 minutes; add 5mL of concentrated nitric acid to the obtained sample, continue adding to dissolve completely, and cool to 30°C; Dilute the solution to 100 mL with distilled water and shake well.

[0072] Weigh 0.1000g of cleaned and dried electrolytic manganese (above 99.9%), put it in a 250mL beaker, add 20mL of 17.5% nitric acid to dissolve, boil to drive out nitrogen oxides, take it out and cool it to 30°C, and transfer it into a 1000mL beaker In the bottle, dilute to the mark with water, mix well, coded as a, 1mL of this solution contains 100μg manganese. Weigh 0.4393g of potassium dihydrogen phosphate, which has been baked at 110°C to a constant weight and stored in a desiccator, dissolve it in an appropriate amount of water, transfer it to a 1000mL volumetric flask, dilute with water to the mark, and mix well. The code is b. 1mL...

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Abstract

The invention provides a method for determining the content of six impurity elements of manganese, phosphorus, arsenic, lead, zinc and copper in permanent magnetic ferrite mixed materials. According to the method, a to-be-determined sample is added into concentrated hydrochloric acid and concentrated nitric acid and is dissolved at the low temperature, the sample is in a volumetric flask in a constant-volume mode, and the sample, the concentrated hydrochloric acid and the concentrated nitric acid are shaken up for determining. Prepared manganese, phosphorus, arsenic, lead, zinc and copper standard solutions are used for making a manganese, phosphorus, arsenic, lead, zinc and copper spectral line intensity-mass fraction working curve on a plasma atomic emission spectrometer, the curve is used for analyzing the to-be-determined sample, and the content of the manganese, the phosphorus, the arsenic, the lead, the zinc and the copper in the permanent magnetic ferrite mixed materials is obtained. According to the method, operation is convenient and rapid, the analysis cost is low, the determining result has the good stability, reproducibility and accuracy, and the determining requirements for the impurity elements of the manganese, the phosphorus, the arsenic, the lead, the zinc and the copper in the daily permanent magnetic ferrite mixed materials can be met. According to the analysis method, adopted chemical reagents are few, the pollution to the environment is small, the analysis cost is low, the multiple elements can be determined at the same time, the analysis efficiency is improved, and labor intensity of analysis and operation personnel is reduced.

Description

technical field [0001] The invention belongs to the technical field of chemical testing, and in particular relates to a method for measuring the contents of six impurity elements manganese, phosphorus, arsenic, lead, zinc and copper in a permanent magnet ferrite mixture. Background technique [0002] At present, when my country's permanent magnet industry prepares permanent magnet ferrite, the main raw materials used are iron oxide, carbonate containing barium, strontium and calcium. Among them, there are three sources of iron oxide—concentrate powder, iron scale, and iron oxide red. The chemical composition of these substances is not entirely ferric oxide, but also contains a small amount of impurity elements, such as manganese, phosphorus, arsenic, lead, zinc, copper, etc. These chemical compositions will affect the magnetic properties of permanent magnets. The content of these impurity elements It must be analyzed, detected and controlled during the production process of...

Claims

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Application Information

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IPC IPC(8): G01N21/73G01N1/28
Inventor 陈涛陶俊赵绥岳金玲
Owner WUKUN STEEL
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