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A method for flotation of uranium minerals from volcanic rock type uranium ore

A technology for uranium ore and volcanic rock, applied in the field of beneficiation, can solve the problems of reducing the processing capacity of hydrometallurgical ore, reducing production costs, and large consumption of reagents, and achieves the effects of improving flotation recovery rate, reducing production costs, and reducing reagent consumption.

Active Publication Date: 2022-05-03
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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  • A method for flotation of uranium minerals from volcanic rock type uranium ore
  • A method for flotation of uranium minerals from volcanic rock type uranium ore
  • A method for flotation of uranium minerals from volcanic rock type uranium ore

Examples

Experimental program
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Effect test

Embodiment 1

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

[0038] (1) Crush the ore particle size to - 5mm, add 2000g / T sulfuric acid during grinding, grind the ore to - 200 mesh, accounting for 55%, adjust the pulp concentration to 20%, transfer it to the flotation tank, and adjust the pulp temperature to 20 ℃.

[0039] (2) Add 3000g / T sodium carbonate into the pulp and stir for 15min under the condition of 2000r / min rotor speed of flotation machine; Add ...

example 1

[0041] The test results of example 1 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 salicylhydroxamic acid and oxidized paraffin soap can play a synergistic role in the limited flotation of uranium minerals in the ore. in addition, the addition of auxiliary collector P507 can enhance the collection capacity of uranium minerals, improve the recovery of uranium, 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, ilmenite, pyrite, rutile, sphalerite, ilmenite, colloidal molybdenite, galena, magnetite, uranite, etc. There are many minerals such as calcite and fluorite in the ore, resulting in high acid consumption during ore leaching. Uranium mainly exists in the form of independent uranium minerals, including ilmenite, pitchblende and uranite, and a small amount exists in uranium thorite in the form of isomorphism. The uranium grade in the ore is 0.23%.

[0048] (1) Crush the ore particle size to - 4mm, add 3000g / T sulfuric acid during grinding, grind the ore to - 200 mesh, accounting for 70%, adjust the pulp concentration to 25%, transfer it to the flotation tank, and adjust the pulp temperature to 30 ℃.

[0049](2) Four groups of experiments were set up to investigate the flotation effect of different inhibitor types and combinations on uranium minera...

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Abstract

The invention discloses a method for flotation of uranium minerals from volcanic rock type uranium ore. The method comprises the steps of crushing the volcanic rock type uranium ore, adding acid grinding and slurry adjustment to obtain the pulp; the pulp is adjusted by sodium carbonate Using water glass and sodium hexametaphosphate as inhibitors, hydroxamic acid compounds and fatty acid compounds as collectors, P507 as auxiliary collectors, and performing foam flotation under the action of a foaming agent to obtain uranium concentrates; By using water glass and sodium hexametaphosphate as inhibitors and using hydroxamic acid and fatty acid collectors in conjunction with P507 auxiliary collectors, this method not only greatly reduces the yield of flotation concentrates, but also reduces the flotation rate. The content of carbonate minerals in the concentrate can reduce the consumption of reagents in the subsequent leaching process and the processing capacity of hydrometallurgy ore; at the same time, the separation and enrichment of uranium minerals have been realized. The yield of flotation concentrate is 19.06%, the uranium grade is 1.073%, and the recovery The rate is 86.63%.

Description

technical field [0001] The invention relates to a uranium ore beneficiation method, in particular to a method for flotation of uranium minerals from volcanic rock type uranium ore, belonging to the technical field of beneficiation. Background technology [0002] Volcanic rock type uranium ore is one of the four major uranium ore types in China, accounting for about 20% of the total existing uranium resources. The deposit scale is generally small and medium-sized, and the uranium grade is generally 0.07 ~ 0.3%. Xiangshan uranium ore field has the largest reserves of hard rock uranium resources in China. At present, the raw ore adopts the process of direct stirring leaching to recover uranium. Because the ore contains acid consuming minerals such as calcite and fluorite, the reagent consumption is large. With the deepening of the mining depth of the deposit, the titanium uranium ore in the ore increases. Titanium uranium ore is a primary ore and a complex oxide mineral of uranium a...

Claims

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Application Information

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Patent Type & Authority Patents(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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