Mineral purity detection method

A purity detection and mineral technology, applied in the field of mineral purity detection, can solve the problems of long detection cycle, lengthy chemical pretreatment process, high standard substance requirements, etc., and achieve the effect of improving detection speed

Active Publication Date: 2021-04-30
BEIJING RES INST OF URANIUM GEOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

These methods have relatively high measurement accuracy, but they mainly have the following disadvantages: 1. The detection period is relatively long, especially the chemical measurement method, which often requires a lengthy chemical pretreatment process; 2. The analysis speed of X-ray fluorescence method is relatively fast , but the method has higher requirements on the standard substance, which requires the reference substance and the sample to have similar or consistent matrix composition

Method used

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Experimental program
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Effect test

Embodiment 1

[0064] Step 1. Evenly spread the quartz sand particles (mineral raw material particles 2) with a particle size of 20 to 30 meshes on the glass slide 3 with double-sided adhesive, and ensure that the area of ​​the adhered mineral particles is not less than 2cm 2 .

[0065] Step 2. Shake off the unglued particles.

[0066] Step 3. Place the glass slide 3 with the mineral raw material particles 2 attached between the voltage-adjustable X-ray source 1 and the 16-bit A / D conversion flat panel detector, so that the main axis of the X-ray is perpendicular to the slide glass The orientation of the slice 3 plane through the mineral sample particles, such as figure 2 shown.

[0067] Step 4: Turn on the X-ray source 1, set the voltage of the X-ray source 1 to 40Kv, the current to 100μA, and the exposure time to 1s to obtain a grayscale image of the X-ray attenuated by the mineral raw material particles 2 .

[0068] Step 5. Use the image processing software to process the grayscale imag...

Embodiment 2

[0071] Step 1. Evenly spread the mineral raw material zircon sand particles with a particle size of 60-200 mesh on the glass slide 3 stuck with double-sided adhesive tape.

[0072] Step 2. Shake off the unglued particles.

[0073] Step 3, placing the glass slide 3 with the mineral raw material particles 2 attached between the voltage-adjustable X-ray source 1 and the 16-bit A / D conversion flat panel detector, so that the X-rays are perpendicular to the plane of the slide glass 3 The direction of the mineral sample particles, such as figure 2 shown.

[0074] Step 4: Turn on the X-ray source 1, set the voltage of the X-ray source 1 to 160Kv, set the current to 10μA, and set the exposure time to 5s to obtain the corresponding grayscale image after the X-rays are attenuated by the mineral raw material particles 2.

[0075] Step 5. Use the image processing software to process the grayscale image according to the following process: set a 5mm×5mm square research area, binarize the...

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Abstract

The invention relates to a mineral purity detection method. The method comprises the following steps: pasting a double faced adhesive tape on a glass slide; uniformly spreading a mineral raw material on the surface, adhered with the double faced adhesive tape, of the glass slide; placing the glass slide between an X-ray source and an energy detector; obtaining a grey-scale map of the X-rays emitted by the X-ray source after the X-rays pass through the mineral raw materials through the energy detector; and determining the proportion of preset components in the mineral raw material according to the grey-scale map. According to the invention, the detection speed is improved.

Description

technical field [0001] The invention relates to the technical field of mineral detection, in particular to a mineral purity detection method. Background technique [0002] In the field of mineral processing, the purity of mineral raw materials directly affects the stability of the mineral processing process and hardware equipment parameters; in addition, in the field of ore raw material trade, the purity of ore raw materials is an important industrial index, which directly affects the transaction price. [0003] At present, the detection methods for the purity of mineral raw materials usually include traditional wet chemical methods and physical measurement methods. Wet chemical methods, such as acid dissolution and alkali fusion, etc. Physical measurements such as X-ray fluorescence, etc. These methods have relatively high measurement accuracy, but they mainly have the following disadvantages: 1. The detection period is relatively long, especially the chemical measurement...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N23/046G01N1/28
CPCG01N23/046G01N1/2813G01N2001/2833Y02P10/20
Inventor 李伯平郭冬发何升冯硕李黎
Owner BEIJING RES INST OF URANIUM GEOLOGY
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