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A Precise Matching Method of Feeding Granularity in High Gradient Magnetic Separation

A high-gradient, ore-feeding technology, applied to high-gradient magnetic separators, complex mathematical operations, etc., can solve problems such as low efficiency

Active Publication Date: 2020-09-08
WUHAN UNIV OF TECH
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Problems solved by technology

[0006] In view of this, the present invention provides an accurate matching method for ore particle size in high-gradient magnetic selection, in order to solve or at least partly solve the technical problem of low efficiency existing in the method in the prior art

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  • A Precise Matching Method of Feeding Granularity in High Gradient Magnetic Separation
  • A Precise Matching Method of Feeding Granularity in High Gradient Magnetic Separation
  • A Precise Matching Method of Feeding Granularity in High Gradient Magnetic Separation

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Embodiment 1

[0064] This embodiment provides a method for matching the particle size of ore in high-gradient magnetic selection, please refer to figure 1 , the method includes:

[0065] Step S1: Use the preset mineral automatic quantitative analysis system to conduct full-grain dissociation analysis on the feed ore to obtain the mineral distribution characteristics, mineral composition, dissociation degree and particle size distribution data, and according to the distribution characteristics, mineral composition, solution The separation and particle size distribution data determine the feed particle size, and the maximum feed particle size is 2b max ;

[0066] Specifically, the preset mineral automatic quantitative analysis system is MLA (Mineral Liberation Analyzer), through which minerals can be dissociated and analyzed. The maximum feeding particle size can be determined according to the embedded distribution characteristics, mineral composition, dissociation degree and particle size ...

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Abstract

The invention discloses an accurate matching method for ore feeding granularity in high-gradient magnetic separation, which comprises the following steps of firstly, carrying out full-fraction dissociation analysis on the fed ore by utilizing a preset mineral automatic quantitative analysis system, and determining the ore feeding granularity according to an analysis result; then measuring the viscosity of ore pulp with different granularities according to the ore pulp concentration and the ore feeding particle size; calculating the gradient matching of a medium according to the existing mediumconditions, calculating the load concentration according to the gradient matching of the medium, and determining the ore feeding concentration according to the load concentration and the viscosity ofore pulp with different granularities; and then dividing grids, establishing the ore feeding particle size constraints according to the mineral composition, the dissociation condition, the viscosityof the ore pulp with different granularities and the ore feeding concentration, and calculating to obtain the magnetic separation parameters suitable for the ore based on the established ore feeding particle size constraints and the grids so as to realize the matching of the ore feeding granularity. According to the present invention, the technical effects that the simulation test frequency is greatly reduced, the concentrate grade is improved, meanwhile, the recovery rate is increased, and the reverse separation efficiency is improved, are achieved.

Description

technical field [0001] The invention relates to the technical field of graded high-gradient magnetic separation technology, in particular to an accurate matching method for ore feeding particle size in high-gradient magnetic separation. Background technique [0002] Grading of ore feeding particle size is a commonly used method in mineral processing. In high gradient magnetic separation, the main factors affecting the efficiency of mineral processing are magnetic field strength and grading particle size. The separation of high-gradient magnetic separation needs to be realized through the internally filled magnetic gathering medium. Relative to the particle size, the radius of the medium wire should take an appropriate ratio. This appropriate proportional relationship is also called "gradient matching". When the medium parameters in the high-gradient magnetic separator remain unchanged, the corresponding feed particle size also needs to be graded and adjusted to obtain the id...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/11B03C1/033
CPCB03C1/033G06F17/11
Inventor 袁梅
Owner WUHAN UNIV OF TECH
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