Method and system for analyzing grade of gold ore

A gold ore and grade technology, applied in the field of analysis of gold ore grade and system, can solve the problems of inability to obtain higher analysis accuracy, slow processing speed, short half-life, etc., and achieve the effect of small footprint, small size and efficient analysis

Pending Publication Date: 2022-04-01
TSINGHUA UNIV
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Problems solved by technology

For this reason, an object of the present invention is to propose the method and system of analyzing gold ore grade, to solve the relatively slow processing speed of traditional fire assay gold method, XRF analysis is limited to ore surface and photon activation method is limited by 197 The short half-life of the allotropic state of Au makes it impossible to obtain higher analytical precision

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  • Method and system for analyzing grade of gold ore
  • Method and system for analyzing grade of gold ore
  • Method and system for analyzing grade of gold ore

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Embodiment Construction

[0030] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0031] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "thickness", "upper", "lower", "inner", "outer", "circumferential" etc. are based on the The orientation or positional relationship is only for the convenience of describing the present invention and simplifying the description, but does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, a...

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Abstract

The invention discloses a method and system for analyzing the grade of gold ore. The method comprises the following steps: (1) activating gold ore to be detected by using neutrons so as to activate < 197 > Au in the gold ore to be detected into < 198 > Au; and (2) performing beta-decay on the 198Au to form 198Hg, and testing the intensity of gamma rays emitted by decay of the 198Au so as to obtain the gold grade of the gold ore to be tested. According to the method, delayed gamma is used as a marker for judging whether 197Au exists or not, accumulative counting can be carried out under a long time scale (minute, hour and day) according to actual requirements, better measurement statistics is obtained, and the measurement precision can be guaranteed. Therefore, the method is more reliable and high in measurement precision, industrial production is easier to achieve, and the problems that a traditional fire assaying method is low in treatment speed, XRF analysis is limited to the surface of ore, and a photon activation method is limited to the short half-life period of the homogeneous and heterogeneous states of 197Au, so that higher analysis precision cannot be obtained can be effectively solved.

Description

technical field [0001] The invention belongs to the field of nuclear technology, and in particular relates to a method and a system for analyzing the grade of gold ore. Background technique [0002] In the mining of gold mines, it is often necessary to determine the direction of the ore veins and the mining value based on the results of the grade analysis of the mined gold mines. At present, the grade analysis of gold ore mainly includes fire assay, X-ray fluorescence analysis (XRF) and photon activation method. in: [0003] The fire assay gold method mainly separates the pure gold in the ore through a series of physical and chemical means, and calculates the gold grade by weighing the mass before and after treatment. The main operation steps are: crushing, batching, melting, ash blowing, separation, secondary melting, separation, etc. This method is complicated to operate, requires professional personnel to operate, has a low degree of automation, and cannot meet the pas...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N23/22G01N23/222G21K1/00
Inventor 杨祎罡张智崔桐源
Owner TSINGHUA UNIV
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