Method for flotation of uranium minerals from volcanic rock type uranium ores

A technology of uranium ore and volcanic rock, which is applied in the field of mineral processing, can solve the problems of reducing the processing capacity of hydrometallurgy ore, reducing production costs, and high production costs, and achieves the effects of improving flotation recovery, reducing production costs, and reducing acid-consuming minerals

Active Publication Date: 2021-01-01
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

[0003] Aiming at the problems that the volcanic rock-type uranium ores are directly leached in the prior art, the existing reagent consumption is large, the leaching rate is low, and the production cost is high. The method, the method can reduce the carbonate minerals and The content of silicate minerals can reduce the consumption of reagents, and at the same time realize the high-efficiency enrichment of uranium minerals, obtain flotation concentrates with high recovery rate of uranium, reduce the amount of subsequent hydrometallurgy ore processing, and reduce production costs

Method used

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  • Method for flotation of uranium minerals from volcanic rock type uranium ores
  • Method for flotation of uranium minerals from volcanic rock type uranium ores
  • Method for flotation of uranium minerals from volcanic rock type uranium ores

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] A volcanic uranium ore is mainly composed of muscovite, quartz, calcite, epidote, rutile, fluorite, apatite, zircon, pitchblende, uranite, pyrite, rutile, sphalerite, ferro-titanium ore, colloidal molybdenum ore, galena, magnetite, uranium, etc. There are many minerals such as calcite and fluorite in the ore, which leads to a large amount of acid consumption during the leaching of the ore. Uranium mainly exists in the form of independent uranium minerals, including uranite, pitchblende, and uranite, and a small amount exists in uranium thorite in the form of isomorphism. The grade of uranium in the ore is 0.23%.

[0038](1) Break the ore particle size to -5mm, add 2000g / t of sulfuric acid during grinding, grind the ore until the fineness -200 mesh accounts for 55%, adjust the pulp concentration to 20%, and transfer it to the flotation tank, The pulp temperature was adjusted to 20°C.

[0039] (2) Add 3000g / t of sodium carbonate to the pulp, and stir for 15min under th...

example 1

[0041] Example 1 test results are shown in Table 1.

[0042] Table 1 Example 1 test results

[0043]

[0044]

[0045] It can be seen from Table 1 that the combined use of salicylic hydroxamic acid and oxidized paraffin wax soap can play a synergistic effect, and the limited flotation of uranium minerals in the ore can be carried out. In addition, the addition of auxiliary collector P507 can enhance the collection capacity of uranium minerals and improve the uranium minerals. The recovery rate, and reduce the amount of salicylhydroxamic acid.

Embodiment 2

[0047] A volcanic uranium ore is mainly composed of muscovite, quartz, calcite, epidote, rutile, fluorite, apatite, zircon, pitchblende, uranite, pyrite, rutile, sphalerite, ferro-titanium ore, colloidal molybdenum ore, galena, magnetite, uranium, etc. There are many minerals such as calcite and fluorite in the ore, which leads to a large amount of acid consumption during the leaching of the ore. Uranium mainly exists in the form of independent uranium minerals, including uranite, pitchblende, and uranite, and a small amount exists in uranium thorite in the form of isomorphism. The grade of uranium in the ore is 0.23%.

[0048] (1) Crush the ore particle size to -4mm, add 3000g / t of sulfuric acid during grinding, grind the ore until the fineness -200 mesh accounts for 70%, adjust the pulp concentration to 25%, and transfer it to the flotation tank, The slurry temperature was adjusted to 30°C.

[0049] (2) Inhibitor comparison test, a total of 4 groups of experiments were se...

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Abstract

The invention discloses a method for flotation of uranium minerals from volcanic rock type uranium ores. The method comprises the following steps: crushing volcanic rock type uranium ores, adding an acid, performing ore grinding, and carrying out size mixing treatment to obtain ore pulp; and adjusting the ore pulp through sodium carbonate, and by taking sodium silicate and sodium hexametaphosphateas inhibitors, hydroxamic acid compounds and fatty acid compounds as collecting agents and P507 as an auxiliary collecting agent, performing froth flotation under the action of a foaming agent to obtain uranium concentrate. According to the method, sodium silicate and sodium hexametaphosphate are used as the inhibitors, and hydroxamic acid and fatty acid collecting agents and the P507 auxiliary collecting agent are used in cooperation, so that the yield of the flotation concentrate is greatly reduced, the content of carbonate minerals in the flotation concentrate is reduced, and reagent consumption and hydrometallurgy ore treatment capacity in the subsequent leaching process can be reduced; and meanwhile, separation and enrichment of uranium minerals are achieved, the flotation concentrate yield is 19.06%, the uranium grade is 1.073%, and the recovery rate is 86.63%.

Description

technical field [0001] The invention relates to a method for beneficiation of uranium ore, in particular to a method for flotation of uranium minerals from volcanic rock type uranium ore, and belongs to the technical field of beneficiation. Background technique [0002] Volcanic rock-type uranium ore is one of the four major types of uranium deposits in my country, accounting for about 20% of the total uranium resources. The scale of the deposits is generally small and medium-sized, and the uranium grade is generally 0.07-0.3%. Xiangshan uranium ore field has the hard rock uranium resources with the largest reserves in my country. At present, the raw ore is recovered by direct stirring and leaching process. Because the ore contains acid-consuming minerals such as calcite and fluorspar, the consumption of reagents is large, and With the deepening of the mining depth of the ore deposit, the titanium-uranium ore in the ore increases. The titanium-uranium ore is a primary ore, wh...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03D1/002B03B1/00B03B1/04B03D1/01B03D101/06B03D101/02B03D103/02
CPCB03D1/002B03B1/00B03B1/04B03D1/01B03D2201/06B03D2201/02B03D2203/02
Inventor 刘志超李广李春风马嘉吴永永强录德唐宝彬钟平汝
Owner BEIJING RESEARCH INSTITUTE OF CHEMICAL ENGINEERING AND METALLURGY
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