A method for separating tantalum and niobium from red mud by using ultrasonic waves

An ultrasonic and red mud technology, applied in the direction of improving process efficiency, can solve the problems of many processing processes, high environmental impact pressure, and difficult waste treatment, and achieve simple extraction process, improve quality, and be conducive to environmental protection. Effect

Inactive Publication Date: 2017-12-01
JIANGXI UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The purpose of the present invention is to provide a method for separating tantalum and niobium from red mud by using ultrasonic waves, aiming to solve the problem of adding a variety of chemical reagents in the current extraction method of tantalum and niobium. Complicated, the waste liquid after treatment, the waste treatment is difficult, the impact on the environment is high, and the production cost is high

Method used

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  • A method for separating tantalum and niobium from red mud by using ultrasonic waves
  • A method for separating tantalum and niobium from red mud by using ultrasonic waves

Examples

Experimental program
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Effect test

Embodiment 1

[0060] Put 30g of red mud and 900ml of distilled water in a 2L triangular flask inserted into the thermostat, and mix 225ml of hydrochloric acid (HCl) and 75ml of nitric acid (HNO3), and heat the thermostat to 75°C , while applying ultrasonic waves at a frequency of 36.7kHz and an output power of 280W, it reacted for 6 hours. Afterwards, the reactant is filtered, and the red mud residue and the extraction filtrate are separated and recovered respectively. Thereafter, the recovered red mud residue was washed with distilled water, and dried at 60° C. for 12 hours. At this time, the extraction filtrate, which is a solution containing extracted tantalum and niobium, was analyzed using ICP (PerkinElmer, OPTIMA 2100DV).

Embodiment 2

[0062] An experiment was carried out in the same manner as in Example 1, except that 300 ml of hydrochloric acid (HCl, 35%) was used instead of the mixed acid of hydrochloric acid and nitric acid and mixed as an acidic solution.

Embodiment 3

[0064] Experiments were carried out in the same manner as in Example 1, except that 300 ml of nitric acid (HNO3, 65%) was used as an acidic solution instead of the mixed acid of hydrochloric acid and nitric acid.

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Abstract

The invention discloses a method for separating tantalum and niobium from red mud by utilizing ultrasonic wave. The method comprises the following steps: pretreating red mud which is taken as an initial material to obtain diluted tantalum-niobium solution; and carrying out tantalum-niobium separation and extraction by taking the diluted tantalum-niobium solution as a material liquid phase and sec-octyl alcohol as an organic phase and adopting ultrasonic wave. The method effectively improves the separation conditions of tantalum and niobium minerals in micro-fine particle sludge, can effectively disperse and flocculate micro-fine sludge taking gangue mineral as a main component, is high in tantalum and niobium grade, can improve the quality of materials in subsequent operations, is extremely small in use amount of dispersing agent and flocculating agent, and is favorable for environment protection and remarkable in economical and technical benefits. By adopting the method, while realizing recovery of tantalum and niobium concentrates, enrichment of noble metal tantalum and niobium in the red mud can be further realized through acidolysis and ultrasonic treatment, so that separation and extraction of tantalum and niobium can be achieved.

Description

technical field [0001] The invention belongs to the technical field of separation and extraction of tantalum and niobium, and in particular relates to a method for separating tantalum and niobium from red mud by ultrasonic waves. Background technique [0002] Tantalum and niobium are two important rare metal element materials, which have important strategic and economic value. With the development of economy, the consumption of various electronic products continues to grow, which makes the industrial demand for tantalum and niobium increase sharply, which intensifies the demand for tantalum and niobium. , The tightness of the supply of niobium mineral resources. my country has abundant reserves of tantalum and niobium raw materials, of which tantalum accounts for 20% of the world's reserves, and niobium accounts for about 15% of the world's reserves. Fine, the recovery rate of beneficiation is low, especially the low recovery rate of tantalum and niobium in fine-grained ore ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B7/00C22B34/24
CPCC22B7/007C22B34/24Y02P10/20
Inventor 杨秀丽张军伟
Owner JIANGXI UNIV OF SCI & TECH
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