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Fine particle cross-flow characteristic research method based on ore rock particle system structural characteristics

A technology of fine particles and system structure, applied in particle and settlement analysis, solid dispersion analysis, instruments, etc., can solve the problems of invisible and lack of quantitative analysis in the flow process of fine particles of caving ore rocks, and achieve simple operation and accurate experimental process. visible effect

Active Publication Date: 2022-01-07
UNIV OF SCI & TECH BEIJING
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Problems solved by technology

[0005] The present invention provides a method for researching the flow characteristics of fine particles based on the structural characteristics of ore rock particles, so as to solve the existing problem of fine particle flow through caving ore rocks. The problem of invisible process and lack of quantitative analysis

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  • Fine particle cross-flow characteristic research method based on ore rock particle system structural characteristics
  • Fine particle cross-flow characteristic research method based on ore rock particle system structural characteristics
  • Fine particle cross-flow characteristic research method based on ore rock particle system structural characteristics

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Embodiment Construction

[0060] In order to make the object, technical solution and advantages of the present invention clearer, the implementation manner of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0061] This embodiment provides a method for researching the through-flow characteristics of fine particles based on the structural characteristics of ore-rock particles. The execution flow of the research method for the through-flow characteristics of fine particles is as follows figure 1 shown, including the following steps:

[0062] S1, preparing a two-dimensional cyclic shear test device;

[0063] Specifically, in this example, the prepared two-dimensional cyclic shear test device is as figure 2 As shown, it consists of three parts, namely: shearing mechanism, driving mechanism and control mechanism 7; wherein,

[0064] The shearing mechanism includes an upper parallel plate 2, a lower parallel plate 11, two shearing side plates...

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Abstract

The invention discloses a fine particle cross-flow characteristic research method based on ore rock particle system structural characteristics. The method comprises the steps: preparing a two-dimensional cyclic shear test device; carrying out a cyclic shear test on particles through the prepared cyclic shear test device; adopting image acquisition equipment for acquiring and recording accumulation state images of the ore rock particles filled in the cyclic shear test device after each cyclic shear motion is finished; processing the acquired image, and extracting position and contour information of all the particles; on the basis of an image processing result, calculating a fine particle flow characteristic parameter and a particle system structure characterization quantity; and quantitatively characterizing the relevance between the characterization quantity of the particle system structure and the flow-through characteristic parameter of the fine particles by using a relevance analysis algorithm. According to the method, the defects of existing research means are overcome, the correlation mechanism between the ore rock particle system structure characteristics and the fine particle flow characteristics can be disclosed, and a new method is provided for research on the fine ore rock particle flow characteristics.

Description

technical field [0001] The invention relates to the technical field of research on flow through fine particles of caving ore rocks, in particular to a research method for flow characteristics of fine particles based on the structure characteristics of ore rock particles. Background technique [0002] Caving mining method is a mining method that realizes ground pressure management by caving surrounding rock. This mining method has simple production process, large production capacity, low cost and convenient management. It is widely used in metal mines at home and abroad. In caving ore drawing, the caving ore is released by gravity under the cover of loose overburden rock formations, and the loss and dilution rate is very high due to the direct contact between the rock and the ore. The flow-through effect of fine particles of overlying waste rock is an important reason for the high loss of dilution. [0003] In the process of ore drawing, the ore rock particles will be affect...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N15/00G01N15/04
CPCG01N15/00G01N15/04G01N2015/0061
Inventor 孙浩韦立昌金爱兵刘美辰贾俊泽
Owner UNIV OF SCI & TECH BEIJING
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