Method for extractingRb+ from low concentration brine and preparing high purity rubidium salt

A low-concentration, brine technology, applied in chemical instruments and methods, rubidium/cesium/francium compounds, alkali metal oxides/hydroxides, etc., can solve environmental pollution and other problems, and achieve fast adsorption-desorption process and high adsorption capacity Large, the effect of overcoming adhesion

Active Publication Date: 2019-05-31
陕西省膜分离技术研究院有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] An object of the present invention is to provide a method for extracting Rb from low-concentration brine + And the method for prepa...

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  • Method for extractingRb+ from low concentration brine and preparing high purity rubidium salt

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Experimental program
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Embodiment 1

[0056] A rubidium ion adsorption microsphere, comprising preparing a solution according to the following mass percentages:

[0057] Polyvinyl alcohol 14%, sodium alginate 1.5%, sodium silicate 0.4%, ammonium phosphomolybdate 24.1%, water 60%.

Embodiment 2

[0059] A rubidium ion adsorption microsphere, comprising the following raw materials in mass percentage:

[0060] Polyvinyl alcohol 10%, sodium alginate 1%, sodium silicate 1%, ammonium phosphomolybdate 45%, water 43%.

Embodiment 3

[0062] A rubidium ion adsorption microsphere, comprising the following raw materials in mass percentage:

[0063] Polyvinyl alcohol 6%, sodium alginate 0.8%, sodium silicate 1.5%, ammonium phosphomolybdate 60%, water 31.7%.

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Abstract

The invention belongs to the technical field of hydrometallurgy, in particular to a method for extracting Rb+ from low concentration brine and preparing high purity rubidium salt, which comprises thefollowing steps: saturating crude filtered brine through Rb+ adsorption column; stopping pumping brine and rinsing the Rb+ adsorption column with pure water, then rinsing the adsorption column with anammonium salt solution, eluting the Rb+ to obtain a first rich rubidium solution; concentrating the first rich rubidium solution to obtain a second rich rubidium solution; adding aluminum sulfate tothe second rich rubidium solution and carrying out recrystallization to obtain a highly pure rubidium aluminum sulfate crystal; adding barium hydroxide to the solution obtained after dissolution of the aluminum rubidium sulfate crystal to obtain a rubidium hydroxide solution; and adding acid to the rubidium hydroxide solution and carrying out the recrystallization to prepare the high purity rubidium salt. The method for extracting the Rb+ from the low concentration brine and preparing the high purity rubidium salthas the advantages of being high in efficiency, environmental in process and capable of preparing a variety of rubidium salts with a purity up to 99.99%.

Description

technical field [0001] The invention belongs to the technical field of hydrometallurgy, in particular to a method for extracting Rb from low-concentration brine + And the method for preparing high-purity rubidium salt. Background technique [0002] Rubidium (Rubidium, Rb) is an active metal with silver-white metallic luster. Due to its unique physical and chemical properties, it not only has important uses in traditional fields such as electronic devices, photovoltaic cells, catalysts, special glasses, and biochemical medicine. It has attracted great attention in some emerging fields such as magnetic fluid power generation, thermal ion conversion power generation, ion propulsion engine rockets, and laser conversion electrical energy devices, especially thermoelectric transducers made of rubidium, such as used in conjunction with atomic reactors, Thermionic thermonuclear power generation can be realized inside the reactor. [0003] Rubidium resources in my country mainly ex...

Claims

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Application Information

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IPC IPC(8): C01D17/00B01J20/26B01J20/30B01J20/28
Inventor 王磊王琎范哲远陈立成黄丹曦宫飞祥
Owner 陕西省膜分离技术研究院有限公司
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