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Method for measuring content of total iron in iron ore concentrate by X-ray fluorescent spectrum method

A technology of fluorescence spectroscopy and ray fluorescence, which is applied in the field of measuring the total iron content in iron ore concentrates by X-ray fluorescence spectroscopy, can solve the problems of unsatisfactory precision of analysis results, large influence of human factors, cumbersome analysis process, etc., and achieve Save analysis time, avoid count distortion, and improve analysis efficiency

Inactive Publication Date: 2018-04-17
GUIZHOU BRANCH CHINA ALUMINUM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] The red mud iron separation project is an important technical transformation project for Aluminum Corporation of China to tap the potential and increase efficiency. The analysis of the total iron content in the product iron concentrate is usually carried out by chemical methods. The analysis process is cumbersome and time-consuming, and is greatly affected by human factors. The analysis results The precision of X-ray fluorescence method is not ideal. Under the requirements of fast and accurate analysis data, the chemical method no longer meets the needs of production. Therefore, the use of X-ray fluorescence method to replace the chemical method will improve the analysis efficiency.

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  • Method for measuring content of total iron in iron ore concentrate by X-ray fluorescent spectrum method
  • Method for measuring content of total iron in iron ore concentrate by X-ray fluorescent spectrum method

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Embodiment 1

[0025] The method for measuring total iron content in iron ore concentrate with X-ray fluorescence spectrometry of the present invention comprises the following steps:

[0026] Extract the iron ore concentrate sample, grind the iron ore concentrate sample and pass it through a 200-mesh sieve, collect powder with a particle size of ≤74 μm, dry it at 100°C for 0.5 hours, and then keep it under 25T pressure for 15s to make a sample to be measured, and then It is placed in an X-ray fluorescence spectrometer for detection, and the detection conditions are: X-ray tube voltage 20kv, tube current 40mA, and the detection curve range is 50-58%.

[0027] The sample preparation method of iron ore concentrate of the present invention may further comprise the steps:

[0028] A. After mixing 3.75kg of iron ore concentrate samples with a particle size of 1mm evenly, use the cone quartering method to perform quartering, and select the aliquot samples obtained by the cone quartering method as t...

Embodiment 2

[0034] The method for measuring total iron content in iron ore concentrate with X-ray fluorescence spectrometry of the present invention comprises the following steps:

[0035] Extract the iron ore concentrate sample, grind the iron ore concentrate sample and pass it through a 200-mesh sieve, collect powder with a particle size of ≤74 μm, dry it at 102°C for 0.8 hours, and then keep it under 28T pressure for 18s to make a sample to be measured, and then It is placed in an X-ray fluorescence spectrometer for detection, and the detection conditions are: X-ray tube voltage 22kv, tube current 42mA, and the detection curve range is 50-58%.

[0036] The sample preparation method of iron ore concentrate of the present invention may further comprise the steps:

[0037] A. After mixing 5kg of iron concentrate samples with a particle size of 2mm evenly, divide them into two equal parts with a splitter, select the split samples from the splitters as reserved iron concentrate samples, and...

Embodiment 3

[0043] The method for measuring total iron content in iron ore concentrate with X-ray fluorescence spectrometry of the present invention comprises the following steps:

[0044] Extract the iron ore concentrate sample, grind the iron ore concentrate sample and pass it through a 200-mesh sieve, collect the powder with a particle size of ≤74 μm, dry it at 104°C for 1.0 hour, and then keep it under 30T pressure for 20s to make a sample to be measured, then Place it in an X-ray fluorescence spectrometer for detection, the detection conditions are: X-ray tube voltage 24kv, tube current 44mA, and the detection curve range is 50-58%.

[0045] The sample preparation method of iron ore concentrate of the present invention may further comprise the steps:

[0046] A. After mixing 10kg of iron ore concentrate samples with a particle size of 3mm evenly, use the cone quartering method to perform quartering, select the aliquot samples obtained by the cone quartering method as the retained iro...

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Abstract

The invention discloses a method for measuring content of total iron in iron ore concentrate by an X-ray fluorescent spectrum method. The method comprises the following steps of sampling an iron ore concentrate sample, grinding the iron ore concentrate sample, screening by a 200-mesh sieve, collecting powder with particle size less than or equal to 74mu m, drying for 0.5 to 1.5h at the temperatureof 100 to 110 DEG C, and maintaining for 15 to 25s at the pressure of 25 to 35T, so as to prepare a to-be-measured sample; detecting the to-be-measured sample in an X-ray fluorescent spectrometer under the detection conditions that the voltage of an X-ray tube is 20 to 30kv, and the current of the X-ray tube is 40 to 60mA. The method has the advantages that the advancement, suitability and popularization effects are realized, the analysis time is short, the efficiency is high, the accuracy is high, the repeatability is good, and the pollution is avoided.

Description

technical field [0001] The invention belongs to the field of chemistry, and in particular relates to a method for measuring total iron content in iron ore concentrates by X-ray fluorescence spectrometry. Background technique [0002] The red mud iron separation project is an important technical transformation project for Aluminum Corporation of China to tap the potential and increase efficiency. The analysis of the total iron content in the product iron concentrate is usually carried out by chemical methods. The analysis process is cumbersome and time-consuming, and is greatly affected by human factors. The analysis results The precision of X-ray fluorescence method is not ideal. Under the requirements of fast and accurate analysis data, the chemical method can no longer meet the needs of production. Therefore, the use of X-ray fluorescence method to replace the chemical method will improve the analysis efficiency. Contents of the invention [0003] Aiming at the above pro...

Claims

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Application Information

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IPC IPC(8): G01N23/223G01N23/2202
CPCG01N23/2202G01N23/223G01N2223/076G01N2223/312
Inventor 邓文军何麒麟韦锋李红
Owner GUIZHOU BRANCH CHINA ALUMINUM IND