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Membrane dispersion extraction device and method for extracting and separating rear-earth elements by using device

An extraction device and membrane dispersion technology, which is applied in the direction of improving process efficiency, can solve the problem that the extraction and separation device cannot be industrialized, and achieve the effect of reducing adhesion

Active Publication Date: 2015-01-28
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In order to solve the problem that the extraction and separation device in the prior art cannot be applied industrially, this patent provides a membrane dispersion extraction device, and further proposes a method for extracting and separating rare earth elements with good separation effect

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  • Membrane dispersion extraction device and method for extracting and separating rear-earth elements by using device
  • Membrane dispersion extraction device and method for extracting and separating rear-earth elements by using device
  • Membrane dispersion extraction device and method for extracting and separating rear-earth elements by using device

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Embodiment 1

[0045] A kind of membrane dispersion extraction device described in this embodiment, such as figure 1 As shown, it includes: a bubble dispersed phase device 7, a gas-in-oil dispersed phase device 8 arranged in series with the bubble dispersed phase device 7; wherein, the bubble dispersed phase device 7 includes an air chamber 71 and an organic phase chamber 72, wherein , the gas-inflating chamber 71 is provided with a gas-phase delivery pipeline, and the gas-phase delivery pipeline is also connected with a gas delivery device. Controller 4; the organic phase chamber 72 is provided with an organic phase delivery pipeline, and the organic phase delivery pipeline is also connected with an organic phase delivery device. In this embodiment, the organic phase delivery device is sequentially connected The organic phase liquid reservoir 2 and the organic phase metering pump 5; the gas phase dispersion membrane 73 is arranged between the gas-filled chamber 71 and the organic phase cham...

Embodiment 2

[0050] (1) select nitrogen as the first dispersed phase;

[0051] (2) Prepare the first continuous phase: stir the concentrated ammonia water with a concentration of 26-28% and P507 with a purity of 92% at a volume ratio of 1:24 for saponification, and after a homogeneous phase is formed, a P507 solution with a degree of saponification of 20% is obtained , it is mixed with sulfonated kerosene in a volume ratio of 7.1:100 to prepare the P507 sulfonated kerosene solution of 0.2mol / L;

[0052] (3) Prepare the second continuous phase: add 0.46g LaCl to 1.0L, pH=2.0 hydrochloric acid solution 3 ·7H 2 O and 0.47g CeCl 3 ·7H 2 O, stir until completely dissolved;

[0053] (4) The parameters for selecting the gas-phase dispersion film are: the gas-phase dispersion film is a stainless steel sintered film with a pore size of 3 μm, a porosity of 70%, and a film thickness of 0.3 mm; the parameters for selecting the gas-in-oil dispersion film are: the oil-in-oil dispersion film The air...

Embodiment 3

[0056] (1) select compressed air as the first dispersed phase;

[0057] (2) Prepare the first continuous phase: stir the concentrated ammonia water with a concentration of 26-28% and P507 with a purity of 92% at a volume ratio of 1:16 for saponification. After a homogeneous phase is formed, a P507 solution with a saponification degree of 30% is obtained , it is mixed with sulfonated kerosene in a volume ratio of 10.6:100 to prepare the P507 sulfonated kerosene solution of 0.3mol / L;

[0058](3) Prepare the second continuous phase: add 0.56g LaCl to 1.0L, pH=3.0 hydrochloric acid solution 3 ·7H 2 O and 0.54g CeCl 3 ·7H 2 O, stir until completely dissolved;

[0059] (4) The parameters for selecting the gas-phase dispersion film are: the gas-phase dispersion film is a stainless steel sintered film with a pore diameter of 1 μm, a porosity of 50%, and a film thickness of 0.3 mm; the parameters for selecting the gas-in-oil dispersion film are: the oil The air-encapsulated disper...

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Abstract

The invention relates to a membrane dispersion extraction device. The membrane dispersion extraction device comprises an air bubble disperse phase device and an gas-in-oil disperse phase device which is connected with the air bubble disperse device in series; the air bubble disperse phase with air bubbles having uniform sizes are formed in the air bubble disperse phase device; the air bubble disperse phase enters the gas-in-oil disperse phase device to mix with a flowing water phase to complete an extraction separation process. In the extraction separation process, the mass transfer area and the mass transfer velocity are effectively increased by a micrometer scale structure of the gas-in-oil and turbulent flow and vortex produced by the water phase near the gas-in-oil, so that the extraction effect is improved. The device is simple in structure and relatively easy to industrialize. Meanwhile, the invention further discloses a method of extracting and separating rear-earth elements by virtue of the device, wherein the method is high in extracting efficiency for rear-earth elements, great in separating coefficient and relatively easy to realize industrialization.

Description

technical field [0001] The invention relates to a membrane dispersion extraction device and a method for extracting and separating rare earth elements using the device, belonging to the field of rare earth element extraction and separation. Background technique [0002] Rare earth elements are known as "industrial vitamins" because of their wide application value in metallurgy, glass, ceramics, chemical industry, nuclear industry, electronics, agriculture and pharmaceutical industry. Although rare earth elements have many important applications mentioned above, since rare earth elements often coexist with several elements in rare earth ores, in order to better realize the effective utilization of rare earth elements, it is necessary to separate the coexisting rare earth elements. [0003] At present, the most widely used solvent extraction and separation equipment in the rare earth industry is the mixing and settling tank, which has the advantages of simple structure, easy p...

Claims

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Application Information

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IPC IPC(8): C22B3/02C22B3/26C22B59/00
CPCY02P10/20
Inventor 王运东徐建鸿侯海龙靖宇牛卿霖刘晶叶思施
Owner TSINGHUA UNIV
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