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Method for analyzing and identifying nationality of imported iron ore by utilizing isotopic tracer method

An isotope tracer and isotope technology, which is applied in the analysis of materials, material analysis through electromagnetic means, and measurement devices, can solve problems such as difficult quality assurance and achieve good scalability

Active Publication Date: 2014-12-03
CHEM MINERALS & METALLIC MATERIALS INSPECTION CENT OF TIANJIN ENTRY EXIT INSPECTION & QUARANTINE BUREAU
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Problems solved by technology

The strong growth of my country's steel production has directly driven the demand for iron ore to continue to rise. While the price of imported iron ore continues to rise, the quality is difficult to guarantee

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  • Method for analyzing and identifying nationality of imported iron ore by utilizing isotopic tracer method
  • Method for analyzing and identifying nationality of imported iron ore by utilizing isotopic tracer method
  • Method for analyzing and identifying nationality of imported iron ore by utilizing isotopic tracer method

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Embodiment Construction

[0014] In order to understand the present invention more clearly, describe the present invention in detail in conjunction with embodiment:

[0015] Application and development: The present invention uses a modern large-scale analytical instrument inductively coupled plasma mass spectrometer to scientifically analyze the monitoring data of 31 major iron ore importing countries in Tianjin Port to find out the relationship between the isotope ratio of various elements in iron ore and the origin of iron ore. relationship, using statistical methods to establish a "digital hologram" of the mineral content of iron ore, and analyzing the extent to which these items affect this attribute, and finally establishing a practical model through which some imported iron ore origins can be effectively identified . Since Australia, Brazil, and India mines account for more than 90% of the imported iron ore, the iron ore of these three countries is mainly analyzed and studied.

[0016] 1. Sample...

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Abstract

The invention relates to a method for analyzing and identifying nationality of imported iron ore by utilizing an isotopic tracer method. The method comprises the following steps: 1, weighing a sample, dissolving the sample by adopting a hydrochloric acid sample dissolving method, and preparing an analysis solution; 2, introducing the prepared solution into an inductively coupled plasma source mass spectrometer for measuring a set isotope ratio, and storing the data into an isotopic tracer database, wherein the set to-be-measured isotopes comprise Mg24, Si28, Ca42, Cr52, Cu63, Zn64, Mo95 and Pb206; and 3, comparing the isotope ratio data with isotopes of import nationality iron ore, and if the isotope ratio data completely accords with isotopes of import nationality iron ore, the production place of the sample can be determined. By utilizing the identification method, iron ore in the production places such as Australia, Brazil and India can be judged, and the method provides a method combining an applied mathematics method and a large analytical instrument, so that the operating requirements of identifying the country of origin of the iron ore products by inspection and quarantine and customs are guaranteed.

Description

technical field [0001] The invention relates to a method for identifying the origin of imported iron ore, in particular to a method for analyzing and identifying the country of imported iron ore by using isotope tracer method, and using mathematical statistics to analyze a large amount of imported iron ore measured by inductively coupled plasma mass spectrometry. Analyze the ore isotope trace data to determine the most critical isotope trace content to identify its origin, and establish an isotope trace database based on this, which is used in inspection and quarantine systems, scientific research units, colleges, testing centers and The corresponding production plants and other departments shall identify the origin of imported iron ore. Background technique [0002] Isotopes are a group of nuclides that have the same atomic number (that is, the same number of protons, so they have the same position in the periodic table), but different mass numbers, that is, different numbe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/62
Inventor 王昊云宋义谷松海李权斌王虹胡德新李异王振坤苏明跃
Owner CHEM MINERALS & METALLIC MATERIALS INSPECTION CENT OF TIANJIN ENTRY EXIT INSPECTION & QUARANTINE BUREAU
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