Visualization quantitative CT (Captive Test) characterization method for component distribution and physical structure of coal sample

A technology of coal samples and physical structure, applied in the direction of using radiation for material analysis, etc., can solve the problems of affecting the statistical representativeness of samples and the sharp reduction of sample size.

Inactive Publication Date: 2013-03-20
SHANXI UNIV
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On the other hand, although the influence of partial volume effects can be reduced to a certain extent by improving the resolution of CT, the s

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  • Visualization quantitative CT (Captive Test) characterization method for component distribution and physical structure of coal sample
  • Visualization quantitative CT (Captive Test) characterization method for component distribution and physical structure of coal sample
  • Visualization quantitative CT (Captive Test) characterization method for component distribution and physical structure of coal sample

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[0031] The characterization method described in the invention can characterize all coal types such as lignite, bituminous coal and anthracite. The present invention will be described in detail below by taking an anthracite as an example. This embodiment is only to further illustrate the present invention, but does not limit the protection scope of the present invention.

[0032] Quantitative CT characterization method for coal sample component distribution and physical structure visualization, including the following steps: the first step, coal sample sampling and pre-test: cutting and selecting adjacent areas on the coal sample for coal quality analysis and total porosity test The first coal sample of the first coal sample and the second coal sample used in the CT experiment shall be sampled to ensure that the phase composition of the sample is uniform; the coal quality test data of the first coal sample are obtained through experimental means, and the coal quality test data ...

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Abstract

The invention relates a visualization characterization technology of a coal sample, and in particular relates to a visualization quantitative CT (Captive Test) characterization method for component distribution and a physical structure of a coal sample. The visualization quantitative CT characterization method comprises the following steps of: sampling and pre-testing the coal sample; carrying out an X-ray absorption characteristic analysis on each component of a second coal sample; carrying out X-ray absorption characteristic analysis on residual minerals; carrying out a CT on the coal sample; establishing a mathematical model and carrying out a numerical analysis on CT slices; and carrying out visualization quantitative characterization. The CT characterization method provided by the invention adopts a plurality of CT data obtained by monochromatic X-ray experiment energy to carry out conjoint analysis, and detects the information of a component, dimension of which is smaller than CT resolution dimension, on a CT picture by establishing a data model on a single CT element, so that the visualization result of the component distribution characteristic and the physical structure of the coal sample is accurate.

Description

technical field [0001] The invention relates to a visualization characterization technology of coal samples, in particular to a quantitative CT characterization method for visualization of coal sample component distribution and physical structure. Background technique [0002] At present, the visual characterization techniques of coal samples mainly include: scanning electron microscopy, X-ray CT imaging, nuclear magnetic resonance and so on. The above methods have their own advantages and disadvantages when characterizing the three-dimensional structure of coal samples. [0003] Scanning electron microscopy combined with energy spectrum analysis can provide a more accurate and high-resolution two-dimensional distribution map of coal sample components, but the coal sample must be physically sliced ​​in the process of obtaining three-dimensional images. The original physical structure of the coal sample will inevitably be destroyed during the slicing process. [0004] T...

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Application Information

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IPC IPC(8): G01N23/06
Inventor 王海鹏杨玉双杨建丽聂一行贾晶
Owner SHANXI UNIV
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