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Comprehensive recovery and beneficiation method for low-grade uranium-containing polymetallic ore

A beneficiation method and technology for polymetallic ore, applied in the field of uranium ore beneficiation, can solve the problems of low concentrate grade, low recovery rate and high recovery cost

Active Publication Date: 2018-11-13
BEIJING MINING & METALLURGICAL TECH GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the problems of high recovery cost, low recovery rate and low concentrate grade in existing low-grade polymetallic uranium ore recovery methods, the present invention provides a comprehensive recovery and dressing method for uranium-containing polymetallic ore

Method used

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  • Comprehensive recovery and beneficiation method for low-grade uranium-containing polymetallic ore

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Embodiment 1

[0153] This embodiment provides a comprehensive recovery ore dressing method for uranium-containing polymetallic ore. The uranium-containing polymetallic ore is a certain uranium-niobium-lead deposit, which is mainly composed of uranium, niobium and lead, and co-(associated) with gold and silver. , bismuth, cadmium, barium strontium and rare earth and other minerals are super-large hard rock uranium deposits, which have the characteristics of large scale, many kinds of minerals, low grade, shallow buried depth and easy mining. Most of the niobium and uranium in the ore are symbiotic in niobium-titanium-uranium ore, and most of the uranium-containing minerals are closely combined. Lead is mainly produced as galena, and a small part is produced as white lead ore. The rare earth mineral is mainly allanite.

[0154] Such as figure 1 As shown, the method includes the following steps:

[0155] (1) After the raw ore is crushed by jaw crusher and cone crusher in turn, it enters high-...

Embodiment 2

[0161]This embodiment provides a comprehensive recovery ore dressing method for uranium-containing polymetallic ores. The uranium-containing polymetallic ores are polymetallic ores containing uranium, rare earth and iron in a certain area, and the ore-containing vein rocks are mainly granite veins. The uranium-containing minerals are mainly niobium-titanium-uranium ore, followed by crystalline uranium ore and brown yttrium-niobium ore. The uranium-containing minerals are distributed unevenly, disseminated, and the particle size is very fine. Most of the uranium-containing minerals are closely symbiotic and form aggregates. Rare earth minerals mainly exist in monazite, iron mainly exists in the form of magnetite, lead mainly exists in the form of galena, followed by white lead ore, and silver and white lead ore are closely related.

[0162] The method comprises the steps of:

[0163] (1) After the raw ore is crushed by jaw crusher and cone crusher in turn, it enters high-pressu...

Embodiment 3

[0169] This embodiment provides a method for comprehensive recovery and beneficiation of uranium-containing polymetallic ores. The uranium-containing polymetallic ores are polymetallic ores containing uranium, thorium, niobium, and rare earths in a certain place, and the ore-containing vein rocks are mainly mixed pegmatites. veins, the uranium content in the ore body varies greatly, and the particle size distribution is uneven, showing a disseminated distribution. 60% of the uranium-containing minerals are concentrated in the +0.074mm particle size. Uranium ore, niobium-containing minerals are mainly distributed in niobium-titanium-uranium ore, followed by brown yttrium-niobium ore and niobium rutile. The rare earth minerals are mainly allanite, and a small part is monazite. The lead minerals are mainly galena, and the iron-bearing minerals are mainly magnetite, followed by pyrite and limonite. Finer, rare earth minerals are the finest.

[0170] The method comprises the steps...

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Abstract

The invention provides a comprehensive recovery and beneficiation method for low-grade uranium-containing polymetallic ore. The comprehensive recovery and beneficiation method comprises the followingsteps that (1) overflow products obtained by grinding the uranium-containing polymetallic ore are subjected to direct flow magnetic separation roughing operation and reverse flow magnetic separation concentration operation in sequence, and iron concentrate and first tailings are obtained; (2) the tailings are subjected to condensation and flotation to obtain first concentrate and second tailings,the first concentrate is subjected to concentration to obtain lead silver concentrate, and the second tailings are subjected to scavenging to obtain third tailings; and (3) the third tailings are subjected to flotation roughing and condensation, and then uranium, niobium and rare earth mixed concentrate is obtained. The beneficiation index is good, the purpose of fully recovering all useful components in coarse-grain coarse concentrate subjected to tailing discarding through gravity concentration under the coarse grinding condition is achieved, an efficient beneficiation separation and enrichment technology is provided for large-scale development and utilization of the low-grade complex polymetallic hard rock uranium ore in China, and the subsequent cost of extracting uranium, niobium andrare earth in the uranium ore through hydrometallurgy is greatly lowered.

Description

technical field [0001] The invention belongs to the field of uranium ore dressing, and relates to a comprehensive recovery and dressing method for low-grade uranium-containing polymetallic ore, in particular to a low-grade hard rock type uranium ore containing uranium, niobium, lead, silver, iron and rare earth polymetallic ore A comprehensive recovery and beneficiation method. Background technique [0002] A certain place in my country contains a super-large hard-rock uranium deposit mainly composed of uranium, niobium and lead ores, and co-existing with gold, silver, bismuth, cadmium, barium, strontium and rare earth minerals. There are many types of uranium-containing minerals, low grade, shallow burial depth and easy mining. The distribution of uranium-containing minerals is fine and uneven. The gangue minerals are mainly quartz, potassium feldspar and calcite. The ore contains 0.014% to 0.016% uranium, about 0.7% lead, and about 0.02% niobium, and the lead oxidation rat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03B9/00
CPCB03B9/00
Inventor 李松清崔栓芳朱阳戈崔强郑桂兵王建国胡进平高明王翾吕淑湛任爱军
Owner BEIJING MINING & METALLURGICAL TECH GRP CO LTD
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