Unlock instant, AI-driven research and patent intelligence for your innovation.

Method for measuring content of strontium carbonate in permanent magnetic ferrite mixture

A technology of permanent magnet ferrite and strontium carbonate, applied in the field of chemical testing, can solve the problem of not formulating national standards and industry standards for the content of strontium carbonate, and achieve the effects of shortening the analysis period, reliable method and convenient operation.

Inactive Publication Date: 2014-09-24
WUKUN STEEL
View PDF3 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, there is no national standard or industry standard for the content of strontium carbonate in permanent magnet ferrite mixture in China.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for measuring content of strontium carbonate in permanent magnetic ferrite mixture
  • Method for measuring content of strontium carbonate in permanent magnetic ferrite mixture
  • Method for measuring content of strontium carbonate in permanent magnetic ferrite mixture

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] Reagent used in the present invention and preparation thereof:

[0054] 1. Hydrochloric acid (1+1): Measure 100mL of concentrated hydrochloric acid into 100mL of distilled water, and stir evenly with a glass rod.

[0055] 2. The above reagents, hydrochloric acid, are analytical reagents, and water is secondary deionized water.

Embodiment 2

[0057] 1. Preparation of strontium oxide standard solution:

[0058] 1A. Accurately weigh 1.4246g of strontium carbonate (spectrally pure) and dissolve it in hydrochloric acid (1+1), boil at low temperature to remove carbon dioxide, transfer to a 1000mL volumetric flask, dilute to the mark with water, and shake well. 1 mL of this solution contains 1.00 mg of strontium oxide.

[0059]2. The preparation of the standard solution used in the working curve:

[0060] 2A. Pipette 0mL, 0.50mL, 1.00mL, 2.00mL, 5.00mL, 10.00mL of the standard solution in 1A into a 100mL volumetric flask, dilute to the mark with water, and shake well.

[0061] 2B. Input the mass fraction of strontium oxide 0%, 0.50%, 1.00%, 2.00%, 5.00%, and 10.00% in step 2A into the standard value, and use an inductively coupled plasma atomic emission spectrometer to measure the oxidation in six standard solutions. Strontium spectral line intensity, then get the working curve of strontium oxide.

[0062] 2C. See Tab...

Embodiment 3

[0068] Determination of strontium carbonate content in the permanent magnet ferrite mixture sample to be tested:

[0069] A. Add 20mL of hydrochloric acid (1+1) to the test sample of the permanent ferrite mixture;

[0070] B. Put the sample in step A on the low-temperature electric furnace to dissolve completely, remove and cool;

[0071] C. Dilute the sample obtained in step B to 100 mL with distilled water, and shake well.

[0072] 2. Determination of strontium carbonate content in the permanent magnet ferrite mixture to be tested:

[0073] 2A. Under the same working conditions as step 2C in Example 2, the strontium oxide content in the permanent magnet ferrite mixture sample to be measured is obtained according to the strontium oxide spectral line intensity-mass fraction curve, and the strontium oxide content is multiplied by the conversion factor The percentage content of strontium carbonate in the permanent magnet ferrite mixture sample is obtained: 14.13%.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
wavelengthaaaaaaaaaa
Login to View More

Abstract

The invention discloses a method for measuring the content of strontium carbonate in a permanent magnetic ferrite mixture. The method comprises the steps of pretreatment, standard solution preparation and measurement, and specifically comprises the steps of weighing a test sample, dissolving the test sample in a hydrochloric acid solution, making up to constant volume, and shaking up for measurement; and making a strontium oxide spectral line intensity-mass percentage working curve by virtue of a standard solution, analyzing the test sample to be measured according to the curve to obtain the content of strontium oxide in the permanent magnetic ferrite mixture, and calculating the percentage of strontium oxide. According to the method, the content of strontium carbonate in the permanent magnetic ferrite mixture is measured by a plasma atomic emission spectrum method, the number of used reagents is small, the interference is low, environment pollution is alleviated, and the working efficiency can be improved; meanwhile, the method is high in precision and accuracy, and effective and accurate data is supplied to production and utilization. The method is convenient and quick in operation and low in analysis cost; a measurement result is high in stability, reproducibility and accuracy; the method can meet a requirement on the daily measurement of the content of strontium carbonate in the permanent magnetic ferrite mixture.

Description

technical field [0001] The invention relates to a method for determining the content of strontium carbonate, in particular to a method for determining the content of strontium carbonate in a permanent ferrite mixture by plasma atomic emission spectrometry, and belongs to the technical field of chemical testing. 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. In the production process of permanent magnet ferrite, Kunming Iron and Steel adopts the method of fixed material source in order to avoid frequent adjustment of process factors and ensure the stability of production. Kunming Iron and Steel mainly uses iron scale, strontium carbonate and a small amount of additives and fluxes in the permanent magnet ferrite mixture, among which the content of strontium carbonate is required to account for about 14%. [0...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/73
Inventor 陈涛陶俊许涯平赵绥
Owner WUKUN STEEL