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A method of flotation of niobium-titanium-uranium ore and application of combined collector

A combined collector and niobium-titanium-uranium ore technology, which is applied in flotation and solid separation, can solve the problems of low recovery rate of niobium-titanium-uranium ore, large amount of collector benzyl hydroxamic acid, and high flotation cost , to achieve the effect of reducing ore processing capacity and reagent consumption, low flotation temperature requirements, and reducing production costs

Active Publication Date: 2020-12-15
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

At present, there are two main flotation technologies for uranium. One method is the reverse flotation method, through flotation of carbonate minerals and sulfides, the product in the tank is niobium-titanium-uranium ore products, and the niobium-titanium obtained by this method The grade of uranium in uranium ore concentrate is still low, only about 0.18%; another method is direct flotation, using hydroxamic acid collectors for direct flotation of niobium-titanium-uranium ore, and the grade of uranium can be more than 0.5%. Niobium-titanium-uranium ore, but the recovery rate of niobium-titanium-uranium ore in this method is low, heating is required during flotation, the amount of collector benzyl hydroxamic acid is large, and the cost of flotation is high

Method used

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  • A method of flotation of niobium-titanium-uranium ore and application of combined collector
  • A method of flotation of niobium-titanium-uranium ore and application of combined collector

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] The main uranium-containing minerals in a gravity separation concentrate are niobium-titanium-uranium ore, and the gangue minerals mainly include microplagioclase, calcite, quartz, neonite, albite, biotite, etc., and the grade of uranium is 0.073%.

[0044] (1) The combined collector is prepared according to the ratio that the mass fraction of carbenic acid accounts for 80%, and the mass fraction of butyl xanthate accounts for 20%.

[0045] (2) The combined collector is prepared into an aqueous solution with a mass fraction of 1% with hot water at a temperature of 50°C.

[0046] (3) Grind the fineness of the gravity-selected concentrate to -0.074mm, accounting for 60%, adjust the concentration of the pulp to 25%, and put it into the flotation cell, and adjust the Ph value of the pulp to 5 with concentrated sulfuric acid.

[0047] (4) Use a roughing process to investigate the flotation effect of niobium-titanium-uranium ore, change the amount of combined collectors, resp...

Embodiment 2

[0051] The main uranium-containing mineral in a gravity concentration concentrate is niobium-titanium-uranium ore, and the gangue minerals mainly include microplagioclase, calcite, quartz, neonite, albite, biotite, etc., and the grade of uranium is 0.073%.

[0052] (1) The combined collector is prepared according to the ratio that the mass fraction of carbenic acid accounts for 75%, and the mass fraction of butyl xanthate accounts for 25%.

[0053] (2) The combined collector is prepared into an aqueous solution with a mass fraction of 2% with hot water at a temperature of 50°C.

[0054] (3) Grind the fineness of the gravity-selected concentrate to -0.074mm, accounting for 65%, adjust the concentration of the pulp to 30%, and put it into the flotation cell, and adjust the Ph value of the pulp to 5.5 with concentrated sulfuric acid.

[0055] (4) Adopt one-time roughing and twice-selection open-circuit process for flotation of niobium-titanium-uranium ore. During roughing, the a...

Embodiment 3

[0059] The main uranium-containing mineral in a gravity concentration concentrate is niobium-titanium-uranium ore, and the gangue minerals mainly include microplagioclase, calcite, quartz, neonite, albite, biotite, etc., and the grade of uranium is 0.073%.

[0060](1) The combined collector is prepared according to the ratio that the mass fraction of carbenic acid accounts for 85%, and the mass fraction of butyl xanthate accounts for 15%.

[0061] (2) The combined collector is prepared into an aqueous solution with a mass fraction of 1% with hot water at a temperature of 60°C.

[0062] (3) Grind the fineness of the gravity-selected concentrate to -0.074mm, accounting for 65%, adjust the concentration of the pulp to 30%, and put it into the flotation cell, and adjust the Ph value of the pulp to 5.5 with concentrated sulfuric acid.

[0063] (4) A closed-circuit process of one roughing, one sweeping, and two beneficiation is adopted to flotation the niobium-titanium-uranium ore. ...

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Abstract

The invention relates to a combined collecting agent for niobium-titanium-uranium ore floatation. The combined collecting agent comprises, by mass, 60-90% of methyl benzyl arsonic acid and 10-40% of sodium n-butylxanthate. The methyl benzyl arsonic acid and the sodium n-butylxanthate are both analytically pure. A niobium-titanium-uranium ore floatation method adopts the combined collecting agent claimed in the claim 1 and comprises the following steps of (1) preparing a collecting agent solution; (2) conducting ore grinding; (3) conducting pulp mixing; (4) conducting niobium-titanium-uranium ore floatation; and (5) conducting multiple concentration on niobium-titanium-uranium rough concentration obtained in the step (4) until reaching the ideal floatation index again. Through the combinedcollecting agent provided by the invention, effective floatation of niobium-titanium-uranium ores can be realized. The combined collecting agent has the characteristics of being good in selectivity, high in collecting capacity, low in requirement for floatation temperature, little in use amount and the like. Gravity concentration is subjected to floatation through primary roughing, primary scavenging and secondary concentration closed-loop technological process, the grade of uranium in the floatation concentrate can reach 1% or more, and the recovery rate can reach 92% or more.

Description

technical field [0001] The invention belongs to the technical field of mineral processing, and specifically relates to a combined collector and method for flotation of niobium-titanium-uranium ore and the application of the combined collector. Background technique [0002] Niobium-titanium-uranium ore is an important uranium resource in China, mainly distributed in Huayangchuan area, Huayin City, Shaanxi Province. This type of uranium ore reserves are huge, but the uranium grade is low, only about 0.016%, and niobium-titanium-uranium ore is a difficult-to-leach uranium mineral, so direct hydrometallurgy has no economic value. At present, there are few researches on the beneficiation of niobium-titanium-uranium ore. According to relevant literature and patents at home and abroad, it is generally found that niobium-titanium-uranium ore is initially enriched through gravity separation, but the grade of uranium in the gravity-selected concentrate is still low, which needs to be ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B03D1/012B03D101/02B03D101/04B03D103/02
CPCB03D1/012B03D2201/02B03D2201/04B03D2203/02
Inventor 刘志超李广强录德马嘉李春风唐宝彬
Owner BEIJING RESEARCH INSTITUTE OF CHEMICAL ENGINEERING AND METALLURGY
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