Anshan type iron ore type determining method based on spectral features
A technology for spectral characteristics and determination methods, which is applied in the direction of material analysis, measuring devices, and instruments by optical means, and can solve problems such as iron ore type distinction.
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Embodiment 1
[0061] 1) Use the visible light-near-infrared spectrometer to scan the ground in the air, at an altitude of 300±15 meters, divide the ground into small squares, and scan each small square. The side length of the small squares does not exceed 2±0.2 meters, and obtain The average visible-near-infrared spectrum of each small square in the ground area;
[0062] Visible-near-infrared spectrometer test band range includes 0.35-1.8μm, spectral resolution is less than 8.5nm; spectral measurement is carried out on a sunny day from 10:00 to 14:00, and the sun altitude angle is 45±5°;
[0063] 2) Using the spectral feature differences between surrounding rocks and iron ore, and hematite and magnetite to establish an iron ore and surrounding rock identification model and an iron ore type identification model, the ground area scanned by aerial remote sensing Analyze and identify the visible light-near-infrared spectral features of each small square inside;
[0064] 2.1) Compare the spectr...
Embodiment 2
[0069] 1) Cores were taken from the iron ore block at the Anqian Open-pit Mine, where the Anshan-type iron ore is located. Since the Anshan-type iron ore consists of magnetite, hematite and quartz-associated ore, it was selected to have quartz or iron ore. a core of the tape, the core being processed to form a sample;
[0070] The sample is a circular sheet with a diameter of 6-10 cm and a thickness of 0.8-1.5 cm;
[0071] The sample surface is perpendicular to the quartz or iron ore bands within the sample;
[0072] 2) Using a visible light-near-infrared spectrometer to measure the spectrum of the sample, and obtain its visible light-near-infrared spectrum;
[0073] Visible-near-infrared spectrometer test band range includes 0.35-1.8μm, spectral resolution is less than 8.5nm;
[0074] 3) Using the iron ore type identification model established by the spectral feature difference between hematite and magnetite, the visible light-near infrared spectral features of the sample a...
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