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Ore separation process for treating fine-grained slime-containing niobium ore

A process and fine-grained technology, applied in the field of mineral processing, can solve the problems of great influence on the separation effect, particle size limit, poor separation effect, etc., and achieve the effect of simplifying the desliming process of gravity separation, improving recovery rate and good economic benefits

Active Publication Date: 2015-03-25
有研资源环境技术研究院(北京)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above traditional gravity and magnetic equipment has a particle size limit when processing ore, and the mud content has a great impact on its separation effect
Generally speaking, if the sorting particle size is less than 30 microns or the mud content (<20 microns) exceeds 25%, the sorting effect of the above traditional equipment is extremely poor

Method used

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  • Ore separation process for treating fine-grained slime-containing niobium ore
  • Ore separation process for treating fine-grained slime-containing niobium ore
  • Ore separation process for treating fine-grained slime-containing niobium ore

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Effect test

Embodiment 1

[0028] A fine-grained niobium ore in Nanping, Fujian Province. The niobium-containing minerals in the ore are mainly brown yttrium niobium ore (niobium mineral rich in heavy rare earths), complex rare gold ore, followed by trace niobite and niobium iron rutile. The gangue minerals are mainly are mica, quartz and calcite. The ore contains 0.04% niobium and <0.005% tantalum.

[0029] (1) Utilize the mineral processing of the inventive method

[0030] Grind the raw ore to -0.074mm70%, and use an ultra-fine purification classifier (produced by Beijing Paleozoic Powder Technology Co., Ltd.) for gravity separation and desliming. The gravity concentration is 10% (weight ratio) and the working pressure is 0.70MPa. Gravity separation sand settling is carried out under the condition of magnetic field strength of 1200Oe and ore concentration of 10% (weight ratio) to remove iron by weak magnetic field. After grit settling and iron removal, strong magnetic roughing is carried out. The or...

Embodiment 2

[0036] A fine-grained niobium ore in Kangding, Sichuan. The niobium-containing minerals in the ore are mainly niobium-ironite, followed by niobium-iron-rutile, and the gangue minerals are mainly quartz, kaolin and calcite. The ore contains 0.060% niobium.

[0037] (1) Utilize the mineral processing of the inventive method

[0038] Grind the raw ore to -0.074mm78%, and adopt ultra-fine purification classifier (produced by Beijing Paleozoic Powder Technology Co., Ltd.) for gravity separation and desliming. The concentration of gravity separation is 10% (weight ratio), and the working pressure is 0.75MPa; The sand is subjected to weak magnetic iron removal under the conditions of a magnetic field strength of 1200Oe and an ore concentration of 10% (weight ratio); strong magnetic roughing is carried out after sand removal and iron removal, with a strong magnetic roughing concentration of 15% and a magnetic field strength of 20000Oe ; Strong magnetic (rough separation) rough concen...

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Abstract

The invention relates to an ore separation process for treating fine-grained slime-containing niobium ore. The process comprises the steps of removing fine slime of the -0.01 mm grain grade under the compound force field effect of a superfine purification grader, performing the combined procedure treatment of strong magnetic rough separation, floating separation and strong magnetic fine separation on settled sand to obtain niobium ore concentrate, and performing regrinding and superfine purification grading on tailings obtained after strong magnetic rough separation and floating separation. By means of the process, the fine slime of the -0.01 mm grain grade can be remarkably removed, the ore pulp environment of magnetic separation and floating separation can be greatly improved, the enrichment effect can be improved, the recovery rate of niobium can be substantially increased, the slime removal process can be simplified, the slime removal process can be improved, and good economic benefits can be brought to enterprises.

Description

technical field [0001] The invention relates to a beneficiation process for treating mud-containing fine-grained niobium ore, which belongs to the technical field of beneficiation. Background technique [0002] There are more than 30 kinds of niobium-containing minerals in my country's niobium deposits, and the ones with industrial value mainly include yellow green stone, niobite, niobium-tantalite, niobium-manganese ore, brown yttrium-niobium ore, black rare gold ore, calcite, and ferroniobium Rutile, etc., but the niobium-containing minerals are brittle, and the niobium-containing minerals are easily over-grinded and lost in the ore slime during the ore grinding process. [0003] It is difficult to recover the niobium lost in the ore slime, because the ore slime generally has high content, small mass, high surface energy and high activity. If it is directly flotation, it will non-selectively adsorb the collector, and consume a large amount of reagents at the same time , an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03B7/00
CPCB03B7/00
Inventor 陈勇宋永胜温建康武彪
Owner 有研资源环境技术研究院(北京)有限公司
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