Analysis method for determining total iron content in iron ore by using X-ray fluorescence spectrum fusion method
A technology of fluorescence spectroscopy and analysis method, which is applied in the direction of material analysis, measurement device, analysis material, etc. using wave/particle radiation, which can solve the problems of high detection frequency, environmental pollution, long time consumption, etc., and achieve high accuracy and precision. , Short analysis time, good repeatability
Inactive Publication Date: 2013-03-13
TANGSHAN JIANLONG IND CO LTD
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Problems solved by technology
[0002] At present, in iron and steel enterprises, the content of total iron in iron ore, which is a bulk material entering the plant, including iron concentrate, pellets or sinter, and foreign ore, directly affects its price and the calculation of blast furnace smelting ingredients. The detection frequency is high and the results must be accurate. Fast, but the previous chemical analysis method is time-consuming and poor in repeatability, which is not conducive to rapid decision-making and guidance of production, and consumes a large amount of toxic reagents, potassium dichromate, which seriously pollutes the environment and cannot meet the needs of fast-paced production
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[0017] 1. Main equipment:
[0018] a) Wavelength dispersive X-ray fluorescence spectrometer:
[0019] The detector is a scanning gas flow proportional counter and a scintillation counter;
[0020] Maximum power: 4kW;
[0021] b) Sample preparation equipment:
[0022] Analyze V4D High Frequency Fusion Furnace
[0023] 2. Selection of standard samples
[0024] Because there are many types of iron ore samples and the coverage of components is large, the selection of standard materials should cover all categories as far as possible, and at the same time, the content of all chemical components should be determined as completely as possible, and S, Ni, Cr, Cu, As, Pb should be excluded. , Br are expressed in the form of oxides.
[0025] Table 1: Standard substance list
[0026] serial number serial number Standard name serial number serial number Standard name 1 GBW07224 Vanadium titanium magnetite ore 1# 23 YSBC 28783-01 Pell...
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Abstract
The invention relates to an analysis method for determining total iron content in iron ore by using an X-ray fluorescence spectrum fusion method, and belongs to the technical field of the metallurgical chemistry analysis test. According to the technical scheme of the analysis method, the analysis method comprises the processing steps of adding 67% of lithium tetraborate and 33% of lithium borate into a standard liquid sample by volume, and adding the mixture into a golden-platinum crucible, wherein the fusion conditions are as follows: the first heating temperature is set to 700 DEG C, the first heating time is 180s, the second heating temperature is set to 1100 DEG C, the second heating time is 180s, the third heating temperature is set to 1100DEG C, and the third heating time is 420s; Fe uses a Ka1 line as an analysis spectrum line, the maximum peak position is the actual peak position, a crystal is analyzed by LiF20, and the photon intensity received by a scintillation detector is not higher than 500kcps, the analysis time is fixedly set to 30s; and an overlapping correction factor of the X-ray fluorescence spectrum analysis spectral line is Br, and a theoretical coefficient a correction method is adopted. The analysis method has the beneficial effects of advancement, applicability, popularization, short analysis time, high accuracy, high repeatability and no pollution. Through the detection on accuracy, the analysis method has extremely high accuracy and extremely high precision.
Description
technical field [0001] The invention relates to an analysis method for measuring the total iron content in iron ore by X-ray fluorescence spectrum melting method, belonging to the technical field of metallurgical chemical analysis test. Background technique [0002] At present, in iron and steel enterprises, the content of total iron in iron ore, which is a bulk material entering the plant, including iron concentrate, pellets or sinter, and foreign ore, directly affects its price and the calculation of blast furnace smelting ingredients. The detection frequency is high and the results must be accurate. Fast, but the previous chemical analysis method is time-consuming and poor in repeatability, which is not conducive to rapid decision-making and guidance of production, and consumes a large amount of toxic reagents, potassium dichromate, which seriously pollutes the environment and cannot meet the needs of fast-paced production. Contents of the invention [0003] The purpose...
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IPC IPC(8): G01N23/223G01N1/44
Inventor 崔宏利王晓峰李丽军梁玉东
Owner TANGSHAN JIANLONG IND CO LTD