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Method of sorting low grade uranium ores by dense medium cyclone

The technology of a heavy medium cyclone and a heavy medium cyclone is applied in the field of uranium ore sorting, which can solve the problems of difficulty in achieving tail throwing and low sorting accuracy, and achieve improved grade, high sorting accuracy and large processing capacity. Effect

Inactive Publication Date: 2018-12-21
ZHENGZHOU MINERALS COMPOSITIVE UTILIZATION RES INST CHINESE GEOLOGICAL ACAD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In addition to uranium, my country's low-grade uranium-containing polymetallic ores are often associated with gold, silver, bismuth, cadmium, barium strontium, rare earth, etc. It is difficult to comprehensively recover useful minerals through radioactive separation, and conventional gravity separation , Magnetic separation method for tailing pre-enrichment, the sorting accuracy is not high, it is difficult to achieve the purpose of tailing

Method used

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  • Method of sorting low grade uranium ores by dense medium cyclone
  • Method of sorting low grade uranium ores by dense medium cyclone
  • Method of sorting low grade uranium ores by dense medium cyclone

Examples

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Embodiment 1

[0020] A method for sorting low-grade uranium ore with a dense medium cyclone, comprising the steps of:

[0021] (1) After coarse crushing and fine crushing, the raw ore is screened for a stage to obtain ore with a particle size of less than or equal to 5mm, and the ore with a particle size greater than 5mm is returned to fine crushing;

[0022] (2) The ore obtained in step (1) is subjected to secondary screening to obtain ore with a particle size range of 0.3-5mm, and the ore with a particle size of less than 0.3mm is treated as tailings;

[0023] (3) Send the ore with a particle size range of 0.3-5mm obtained in step (2) into a dense medium cyclone for separation. The heavy suspension in the dense medium cyclone effectively separates heavy minerals from light minerals, and They are discharged from their respective ore discharge outlets; the discharged heavy minerals and light minerals enter their respective de-intermediation and dehydration processes, and the heavy suspensio...

Embodiment 2

[0029] A method for sorting low-grade uranium ore with a dense medium cyclone, comprising the steps of:

[0030] (1) After coarse crushing and fine crushing, the raw ore is screened for a stage to obtain ore with a particle size of less than or equal to 5mm, and the ore with a particle size greater than 5mm is returned to fine crushing;

[0031] (2) The ore obtained in step (1) is subjected to secondary screening to obtain ore with a particle size range of 0.3-5mm, and the ore with a particle size of less than 0.3mm is treated as tailings;

[0032] (3) Send the ore with a particle size range of 0.3-5mm obtained in step (2) into a dense medium cyclone for separation. The heavy suspension in the dense medium cyclone effectively separates heavy minerals from light minerals, and They are discharged from their respective ore discharge outlets; the discharged heavy minerals and light minerals enter their respective de-intermediation and dehydration processes, and the heavy suspensio...

Embodiment 3

[0038] A method for sorting low-grade uranium ore with a dense medium cyclone, comprising the steps of:

[0039] (1) After coarse crushing and fine crushing, the raw ore is screened for a stage to obtain ore with a particle size of less than or equal to 5mm, and the ore with a particle size greater than 5mm is returned to fine crushing;

[0040] (2) The ore obtained in step (1) is subjected to secondary screening to obtain ore with a particle size range of 0.3-5mm, and the ore with a particle size of less than 0.3mm is treated as tailings;

[0041] (3) Send the ore with a particle size range of 0.3-5mm obtained in step (2) into a dense medium cyclone for separation. The heavy suspension in the dense medium cyclone effectively separates heavy minerals from light minerals, and They are discharged from their respective ore discharge outlets; the discharged heavy minerals and light minerals enter their respective de-intermediation and dehydration processes, and the heavy suspensio...

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Abstract

The invention discloses a method of sorting low grade uranium ores by a dense medium cyclone. The method comprises the following steps: carrying out first section screening after coarsely crushing andfinely crushing raw ores to obtain ores, the granularity of which is smaller than or equal to 5 mm, wherein the ores, the granularity of which is greater than 5 mm, are returned to be finely crushed;carrying out second-section screening on the obtained ores to obtain ores, the granularity range of which is 0.3-5 mm, wherein the ores, the granularity of which is smaller than 0.3 mm, are treated as tailings; feeding the ores, the granularity range of which is 0.3-5 mm, into the dense medium cyclone to be sorted, wherein heavy minerals and light minerals are separated effectively by means of aheavy suspension in the dense medium cyclone and are discharged from ore discharge ports, respectively; and feeding the discharged heavy minerals and light minerals into medium-removing and dehydrating steps respectively, wherein the obtained heavy minerals are uranium concentrate and the obtained light minerals are uranium tailings. The method provided by the invention has the advantages of beingsimple in process, low in cost, large in handling capacity, high in sorting precision, high in enriching ratio and the like, and the operating cost of the dense medium cyclone is low.

Description

technical field [0001] The invention belongs to the technical field of uranium ore separation, and in particular relates to a method for separating low-grade uranium ore with a dense medium cyclone. Background technique [0002] Uranium resources are important strategic resources and energy minerals in China, as well as basic raw materials for the development of my country's nuclear industry. my country is a country that is not very rich in uranium resources. It has been found that the resources are mainly distributed in 23 provinces, municipalities, and autonomous regions. The ore-forming geological conditions are complex. Most of the uranium deposits in my country are small and medium-sized (accounting for 91.7%), and the ore grades are mainly medium and low grades. The average grade of the ore deposits is lower than 0.3%, accounting for 96.7%. The mineralization is uneven, the grade variation coefficient is large, and the grades are jumping. The distribution of waste rock...

Claims

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Application Information

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IPC IPC(8): B03B5/34
CPCB03B5/34
Inventor 刘长淼卫敏冯安生吴东印吕子虎赵登魁程宏伟何世平
Owner ZHENGZHOU MINERALS COMPOSITIVE UTILIZATION RES INST CHINESE GEOLOGICAL ACAD
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