Extract rb from low concentration brine + And the method for 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 separation efficiency High, large adsorption effect
Active Publication Date: 2021-06-29
陕西省膜分离技术研究院有限公司
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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 preparing high-purity rubidium salt, which solves the problem of extracting Rb from brine using traditional methods + environmental pollution problems
Method used
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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 prepare the method for high-purity rubidium salt, it comprises the following steps: the brine after the rough filtration is passed through Rb + The adsorption column is saturated, stop pumping brine and wash the Rb with pure water + Adsorption column, wash described adsorption column with ammonium salt solution subsequently, to Rb + eluting to obtain a first rubidium-rich solution; concentrating the first rubidium-rich solution to obtain a second rubidium-rich solution; adding aluminum sulfate to the second rubidium-rich solution and recrystallizing to obtain high-purity sulfuric acid aluminum rubidium crystals; adding barium hydroxide to the solution obtained by dissolving the aluminum rubidium sulfate crystals to obtain a rubidium hydroxide solution; adding acid to the rubidium hydroxide solution and recrystallizing to obtain a high-purity rubidium salt. A method for extracting Rb from low-concentration brine provided by the invention + Furthermore, the method for preparing high-purity rubidium salts has high preparation efficiency, an environmentally friendly technological process, and the preparation of various rubidium salts with a purity as high as 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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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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