Cyclone Classification Column and Its Method for Classifying Ore Pulp Coarse and Fine Particles

A swirl classification and coarse particle technology, applied in swirl classification column and its application to classify coarse and fine particles of pulp, non-ferrous metal mine concentrator classification operation field, can solve the problem of strict use conditions, easy blockage of grit nozzle, low classification accuracy, etc. problems, to achieve the effect of small footprint, not easy to block holes, and high grading accuracy

Inactive Publication Date: 2019-07-05
COLLEGE OF APPLIED SCI JIANGXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The principle is fuzzy classification according to the radial velocity difference, such as krebsgmax cyclone, Neptune cyclone, etc., which are characterized by: small footprint, large processing capacity, high classification efficiency, low classification accuracy, high energy consumption, and grit nozzle Easy to block, strict use conditions, high cost, etc.

Method used

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  • Cyclone Classification Column and Its Method for Classifying Ore Pulp Coarse and Fine Particles
  • Cyclone Classification Column and Its Method for Classifying Ore Pulp Coarse and Fine Particles
  • Cyclone Classification Column and Its Method for Classifying Ore Pulp Coarse and Fine Particles

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] The device and method of the present invention are used to classify the overflow product (the raw ore of this embodiment) of the hydrocyclone of a large-scale state-owned enterprise in Jiangxi Province, a copper mine dressing plant. The useful minerals composed of raw ore are mainly chalcopyrite and pyrite, and the gangue minerals are mainly quartz, calcite magnetite and hematite. The raw ore density is 3.25g / cm3, and the raw ore particle size composition is shown in Table 1.

[0052] Table 1:

[0053] Grain fraction / mm Yield / % Cumulative yield under sieve / % -0.833+0.351 10.98 100.00 -0.351+0.147 13.04 89.02 -0.147+0.074 17.70 75.98 -0.074 58.28 58.28 total 100.00

[0054] Adopt device of the present invention, the operation step of classification is as follows:

[0055] According to step A: keep the water level 10cm lower than the upper end of the cylindrical screen, and keep the water in and out in balance;

[0056]...

Embodiment 2

[0066] The raw ore of present embodiment is with embodiment 1.

[0067] Adopt device of the present invention, the operation step of classification is as follows:

[0068] A step is with embodiment 1;

[0069] According to step B: adjust the rotational speed of the central shaft to 1000r / min;

[0070] According to step C: add ore pulp (mass concentration is 35%, and the addition speed is 4kg / min measured by dry ore) from the ore feeding pipe, and the continuous addition time of ore pulp is 30min;

[0071] D step and E step are with embodiment 1.

[0072] The calculation results of Example 2 are shown in Table 3.

[0073] table 3:

[0074] Grain fraction / mm Raw ore yield / % Fine particle product / % Coarse particle product / % E quality efficiency / % E volume efficiency / % -0.351 89.02 100.00 50.42 87.45 87.45 -0.147 75.98 85.69 38.65 42.22 89.50 -0.074 58.28 68.95 19.25 34.46 92.91

[0075] According to Table 3, the classificati...

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Abstract

The invention relates to an eddy flow grading column and method for using an eddy flow grading column in pulp crude / fine grain grading. The eddy flow grading column comprises a frame, a pedestal is fixed at the frame, a horizontal support strip is fixed at the pedestal, a fine grain outlet pipeline is connected below the pedestal, a large valve is arranged at the fine grain outlet pipeline, a tubular cylinder is arranged at the pedestal, a cylindrical screen mesh having a coaxial line is distributed in the tubular cylinder, the cylindrical screen mesh is fixedly at a rack, the bottom of the rack is fixed at the support strip, a coarse grain outlet pipeline is connected below a middle part of the support strip, a small valve is arranged at the coarse grain outlet pipeline, an upper cover isarranged at the top of the tubular cylinder, an ore-feeding pipe and a water inlet pipe are arranged at the upper cover, a through hole is arranged at the center of the upper cover, a rotating shaftis arranged at the coaxial line of the cylindrical screen mesh, a blade spindle sleeve is arranged at the bottom of the rotating shaft, a blade is arranged at the blade spindle sleeve, the rotating shaft is driven by a motor, and the motor is arranged at the frame. The eddy flow grading column has the advantages of good grading precision and high grading efficiency.

Description

technical field [0001] The invention relates to a technology for classifying coarse and fine particles of ore pulp in a beneficiation process, in particular to a swirling flow classification column and a method for classifying the coarse and fine particles of ore pulp by using the swirl flow classification column, which is especially suitable for the classification operation of non-ferrous metal mine beneficiation plants. Background technique [0002] Classification equipment is widely used in the separation of coarse and fine particles of ore materials, coal, grain and other granular or powdery materials. Non-ferrous metals are important basic raw materials for the development of the national economy and key supporting materials for the development of modern high-tech industries. They are widely used in fields such as electric power, transportation, construction, machinery, electronic information, aerospace, and national defense. In the non-ferrous metal beneficiation proce...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B04C3/00B03B5/34
CPCB03B5/34B04C3/00
Inventor 胡海祥刘赣伟秦磊梁斌珺李广杨旺李坤胡明旭高航宇
Owner COLLEGE OF APPLIED SCI JIANGXI UNIV OF SCI & TECH
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