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A method for extracting rubidium and cesium from acid brine

A rubidium-cesium and brine technology, applied in the field of salt lake chemistry and chemical industry, can solve problems such as unreported technical solutions, lack of brine pretreatment process, great adsorption and separation interference, etc., achieving low production cost, easy solid-liquid separation, The effect of improving extraction efficiency

Inactive Publication Date: 2017-12-12
QINGHAI INST OF SALT LAKES OF CHINESE ACAD OF SCI
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  • Abstract
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  • Claims
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Problems solved by technology

[0005] Although existing patents and periodicals and other documents disclose or report the process route and method of extracting rubidium and cesium by t-BAMBP, they lack the brine pretreatment process, but a large amount of calcium and magnesium ions in the actual brine will affect the extraction process
Moreover, the composition of the actual salt lake brine, oil field water and other systems is complex, in which trace amounts of rubidium ions and cesium ions coexist with many other constant ions, and the coexisting constant ions greatly interfere with the adsorption and separation of rubidium ions and cesium ions. The corresponding technical solution to the problem is not reported

Method used

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  • A method for extracting rubidium and cesium from acid brine

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Embodiment 1

[0028] see figure 1 , at 25°C, the initial concentrations of rubidium, cesium, sodium, potassium, calcium, and magnesium ions in brine were 19.0mg / L, 2.0mg / L, 30.55g / L, 20.60g / L, 23.84g / L, and 28.38 g / L, take 50g of ammonium-type chelating resin and pack it into the column, pump 100mL of simulated brine into the adsorption column, and transfer it to the ammonia water pool for transformation after the resin is saturated, wash away the residual ammonia on the surface and reload it into the adsorption column, and wait for After removing calcium and magnesium, add ammonia water to make the pH of the effluent to 11, then mix with 100mL 1mol / L t-BAMBP sulfonated kerosene solution and enter the extraction device to vibrate for 10min, after standing for 5min, the oil and water are separated, and the water phase is discharged for subsequent salt extraction treatment , the organic phase enters the stripping device, add 80mL of 2.0mol / L HCl to shake for 10min, let stand for 5min to separ...

Embodiment 2

[0030] At 25°C, the initial concentrations of rubidium, cesium, sodium, potassium, calcium, and magnesium ions in brine are 19.0mg / L, 2.0mg / L, 30.55g / L, 20.60g / L, 23.84g / L, and 28.38g, respectively / L, take 50g of ammonium-type chelating resin and pack it into the column, pump 100mL of simulated brine into the adsorption column, transfer it to the ammonia water pool for transformation after the resin is saturated, wash off the residual ammonia on the surface and reload it into the adsorption column, wait for the calcium After removing magnesium, add ammonia water to make the pH of the effluent liquid 11, then mix it with 100mL 1mol / L t-BAMBP sulfonated kerosene solution and enter the extraction device to vibrate for 5 minutes, after standing for 5 minutes, the oil and water are separated, and the water phase is discharged for subsequent salt extraction treatment. The organic phase enters the stripping device, add 80mL of 2.0mol / L HCl to shake for 10min, stand still for 5min to ...

Embodiment 3

[0032] At 25°C, the initial concentrations of rubidium, cesium, sodium, potassium, calcium, and magnesium ions in brine are 19.0mg / L, 2.0mg / L, 30.55g / L, 20.60g / L, 23.84g / L, and 28.38g, respectively / L, take 50g of ammonium-type chelating resin and pack it into the column, pump 100mL of simulated brine into the adsorption column, transfer it to the ammonia water pool for transformation after the resin is saturated, wash off the residual ammonia on the surface and reload it into the adsorption column, wait for the calcium After removing magnesium, add ammonia water to make the pH of the effluent liquid 11, then mix it with 100mL 1mol / L t-BAMBP sulfonated kerosene solution and enter the extraction device to vibrate for 10 minutes, after standing for 5 minutes, the oil and water are separated, and the water phase is discharged for subsequent salt extraction treatment. The organic phase enters the stripping device, add 80mL of 2.0mol / L HCl to shake for 5min, let stand for 5min to se...

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Abstract

The invention discloses a method for extracting rubidium and cesium from acid brine, comprising: pumping brine into an adsorption column equipped with ammonium-type chelating resin, calcium ions and magnesium ions are adsorbed by the adsorption column of ammonium-type chelating resin, and the effluent is Brine after removing calcium ions and magnesium ions; the effluent is mixed with t-BAMBP, kerosene or sulfonated kerosene and shaken, and the aqueous phase and the organic phase are separated after standing for stratification; then the organic phase is back-extracted to obtain rubidium chloride and chlorine Aqueous phase of cesium chloride. The method of the invention has simple process and low production cost, can realize the separation and extraction of rubidium and cesium ions in the radioactive water body, and has no secondary pollution.

Description

technical field [0001] The invention belongs to the field of salt lake chemistry and chemical industry, and in particular relates to a method for extracting rubidium and cesium from acid brine. Background technique [0002] Rubidium and cesium are abundant in the earth's crust, ranking 16th and 40th respectively in terms of element abundance. They are mainly abundant in solid ores such as lepidolite and cesium garnet, and in salt lake brine. Rubidium and cesium have strong chemical activity and excellent photoelectric properties, and have been greatly developed in traditional application fields such as electronic devices, catalysts, and special glasses. [0003] In recent years, with the in-depth understanding of rubidium and cesium, rubidium and cesium have also shown strong vitality in emerging application fields such as magnetic fluid power generation, thermionic conversion power generation, and ion propulsion engines. The basic raw materials for the industrial productio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B26/10
Inventor 刘海宁胡耀强叶秀深张慧芳吴志坚
Owner QINGHAI INST OF SALT LAKES OF CHINESE ACAD OF SCI
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