A kind of flotation collector of pitchblende and its application

A technology of pitchblende ore and collector, which is applied in flotation, solid separation, etc., can solve the problems of low economic benefit, high leaching acid consumption, and many harmful minerals, so as to improve the grade of uranium, reduce the amount of ore, and collect powerful effect

Active Publication Date: 2021-11-30
BEIJING RESEARCH INSTITUTE OF CHEMICAL ENGINEERING AND METALLURGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Most of the uranium ores in my country have the characteristics of low grade and many harmful minerals, which often lead to production problems such as high leaching acid consumption, large processing capacity, and low economic benefits.

Method used

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  • A kind of flotation collector of pitchblende and its application
  • A kind of flotation collector of pitchblende and its application
  • A kind of flotation collector of pitchblende and its application

Examples

Experimental program
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Effect test

Embodiment 1

[0036] The uranium grade of a volcanic-type uranium deposit is 0.127%. The main uranium mineral is pitchblende, and the uranium mineral particles are fine. In addition, it also contains gangue minerals such as quartz, feldspar, neonite, and chlorite. After the ore was ground to -0.043mm particle size accounting for 70%, the flotation temperature of 28°C and the amount of foaming agent No. 2 oil was 150g / t, and the flotation of uranium under the condition of different amounts of collector 8-hydroxyquinoline The selection effect, the flotation process adopts a rough selection, and the test results are shown in Table 1.

[0037] Table 1 Test results of different dosage conditions of 8-hydroxyquinoline

[0038]

[0039] It can be seen from Table 1 that when the amount of 8-hydroxyquinoline is 500-2000g / t, a significant flotation effect can be obtained, and with the increase of the amount of 8-hydroxyquinoline, the recovery rate of uranium in the flotation concentrate increases ...

Embodiment 2

[0041] The main uranium mineral in a granite-type uranium deposit is pitchblende, and the gangue minerals are mainly quartz, potassium feldspar, plagioclase, biotite, pyroxene and hornblende, and contain a small amount of titanite, barite, zirconium stone. The uranium grade of the ore is 0.081%, and the direct leaching effect is poor, the processing capacity is large, and the economic benefit is poor. Using the 8-hydroxyquinoline described in the present invention as a collector, a laboratory flotation test was carried out on the ore. Add 1000g / t of the collector of the present invention during roughing, and stir for 5 minutes; add 200g / t of auxiliary collector isooctyl phosphate, and stir for 3 minutes; the amount of foaming agent MIBC is 100g / t, stir for 3 minutes and then inflate Flotation 5 ~ 8min. No agent is added during the selection, and the flotation is directly scraped after stirring for 1 to 3 minutes. The test results are shown in Table 2.

[0042] Table 2 Test r...

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Abstract

The invention belongs to the technical field of mineral processing, and in particular relates to a flotation collector for pitchblende and its application. In the invention, 8-hydroxyquinoline is used as a collector, isooctyl phosphate is used as an auxiliary collector, and pitchblende in the ore is the mineral for flotation. Pitchblende uranium ore can be enriched by flotation. When the uranium grade of the flotation raw ore is 0.127%, after one flotation, the uranium grade of the flotation concentrate can reach about 0.5%, and the uranium grade of the flotation tailings can be reduced to 0.1%. Below, the recovery rate of uranium in flotation operation can reach up to 69.65%. The uranium grade can be enriched by 3 to 4 times through flotation, and the obtained flotation concentrate is 10% to 20% of the flotation raw ore. It can be seen that, after the raw ore is flotation by the method of the present invention, under the premise of higher recovery rate, the uranium grade can be significantly improved and the ore amount can be reduced, the hydrometallurgy treatment capacity and reagents can be reduced, the cost of water and electricity can be saved, and the economic efficiency can be improved. benefit.

Description

technical field [0001] The invention belongs to the technical field of mineral processing, and in particular relates to a flotation collector for pitchblende and its application. Background technique [0002] Uranium is a global strategic resource and an important raw material for clean nuclear energy. my country's uranium resource endowment is relatively poor, and most of the proven resources have the characteristics of low grade, high content of harmful minerals, and difficult recovery of associated resources. In order to ensure the economy of the uranium extraction process, it is necessary to pre-enrich or remove impurities through ore dressing. With its own characteristics, the flotation process has unique advantages in the pre-enrichment of ore with complex mineral composition and fine particle size. [0003] Pitchblende is a common uranium mineral, widely distributed in uranium deposits in my country. However, no breakthrough has been made for a long time for the pr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B03D1/018B03D101/02B03D101/04B03D103/04
CPCB03D1/018B03D2201/02B03D2201/04B03D2203/04
Inventor 李春风刘志超李广强录德马嘉唐宝彬
Owner BEIJING RESEARCH INSTITUTE OF CHEMICAL ENGINEERING AND METALLURGY
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