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Method for extracting molybdenum, rhenium and radioactive cause 187Os

A technology of radioactivity and origin, applied in chemical instruments and methods, preparation of rhenium compounds, rhenium compounds, etc., can solve the problems of simultaneous recovery of molybdenum, rhenium and radioactive origin, environmental pollution, etc., achieve high yield, simple equipment, The effect of less investment

Active Publication Date: 2020-11-03
NAT RESERACH CENT OF GEOANALYSIS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] In view of the above-mentioned analysis, the present invention aims to provide a method for simultaneously extracting molybdenum, rhenium and radiogenic 187 The Os method solves the inability to simultaneously recover molybdenum, rhenium and radioactive causes in the prior art 187 Os, and the recycling process seriously pollutes the environment

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  • Method for extracting molybdenum, rhenium and radioactive cause 187Os
  • Method for extracting molybdenum, rhenium and radioactive cause 187Os
  • Method for extracting molybdenum, rhenium and radioactive cause 187Os

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Embodiment 1

[0065] A specific embodiment of the present invention provides a radiogenic 187 The extraction method of Os, such as figure 1 As shown, the extracted raw material is molybdenum concentrate, specifically molybdenite, because the reducing ore-forming fluid (such as positive hexavalent Mo and positive heptavalent Mo is reduced to positive four valence Mo), positive tetravalent Os can also be reduced to positive trivalent Os or even zero valent Os. The lower the valence state of the ion, the larger the ionic radius, and the reduction of Os in the positive tetravalent state will not only generate a larger Os ion, but also cause a charge imbalance, making it impossible to replace Mo with the same quality. In the formation environment of molybdenite, positive tetravalent Os is reduced to low-valent Os ions with a larger ionic radius, which is the main reason why molybdenite does not contain ordinary Os.

[0066] The crystal lattice of Re is similar to that of Mo. When molybdenite c...

Embodiment 2

[0151] Such as figure 2 Shown, the extraction rhenium process of embodiment one more specifically comprises the following steps:

[0152] Step a: extracting rhenium by ion exchange to obtain an eluent containing rhenium.

[0153] The rhenium-containing immersion solution treated by water immersion flows through the ion exchange column at a flow rate of 500 ml / min, the rhenium in the immersion solution remains on the column, and impurities such as calcium and molybdenum flow out with the effluent. When rhenium can be detected in the effluent, it indicates that the capacity of the column is full, and the loading of the column is stopped. The effluent can be returned to the rhenium leaching process for continued use. Wash the column with 50 liters of 10% NaOH solution (to remove molybdenum), and then wash it with deionized water until neutral. with 9% NH 4 The SCN solution eluted rhenium from the column. The flow rate of the eluent should be as slow as possible, and the spe...

Embodiment 3

[0159] Such as image 3 Shown, the extraction molybdenum process of embodiment one more specifically comprises the steps:

[0160] Step i: Separating the slurry from solid to liquid, the main component of the solid phase is CaSO 4 (gypsum), the liquid phase is adjusted to neutrality (pH about 7) with calcium carbonate, filtered, and the filtrate is subjected to subsequent molybdenum extraction process.

[0161] It should be noted that after the liquid phase is adjusted to neutral, it must be filtered within four hours, otherwise the dissolved molybdenum will precipitate in the form of calcium molybdate, reducing the recovery rate of molybdenum.

[0162] After the reaction is over, put all the thick slurry in the kettle into a receiving tank with a volume of 1000 liters, and introduce it into a centrifuge in stages for solid-liquid separation, and collect the liquid phase. Wash the filter residue twice with a small amount of water, and (the degree of washing directly affects ...

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Abstract

The invention discloses a method for extracting molybdenum, rhenium and a radioactive cause 187Os, belongs to the technical field of mineral extraction, and solves the problems that the molybdenum, the rhenium and the radioactive cause 187Os cannot be recovered at the same time and the recovery process seriously pollutes the environment in the prior art. The method for extracting comprises the following steps that burdening, roasting, water leaching and filtering are performed to obtain a first liquid phase and a first solid phase, the first solid phase enters a molybdenum acid boiling and osmium distillation process to obtain volatile osmium tetroxide and slurry, the volatile osmium tetroxide enters a subsequent 187Os extraction process, and the slurry enters a subsequent molybdenum extraction process; and the first liquid phase contains rhenium, and the first liquid phase enters a subsequent rhenium extraction process. The molybdenum extraction process comprises the following steps of filtering, impurity precipitating, molybdenum extracting through ion exchange, eluting and crystallizing, and then ammonium molybdate is obtained. The method realizes simultaneous extraction of themolybdenum, the rhenium and the 187Os by one process.

Description

technical field [0001] The invention relates to the technical field of mineral extraction, in particular to a national emerging strategic resource molybdenum, rhenium and 187 Extraction of Os, especially a method for extracting molybdenum, rhenium and radiogenic 187 Os method. Background technique [0002] Rhenium is one of the rarest metals on earth and is often used in high-performance aircraft engine turbines. If rhenium is lacking, the performance and life of the engine will be severely limited. Therefore, rhenium is known as the metal that changes the aviation industry. It is a Emerging Strategic Defense Resources. [0003] my country's rhenium reserves are less than 240 tons, and the control of rhenium is related to the national energy security strategy. At present, my country has set up high-standard environmental protection thresholds and control conditions for this strategic national defense resource, which is more precious than rare earths, to completely elimina...

Claims

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Application Information

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IPC IPC(8): C22B34/34C22B61/00C22B11/00C22B3/04C22B3/22C22B3/44C22B3/42C22B1/02C01G39/00C01G47/00
CPCC22B34/34C22B61/00C22B11/04C22B3/04C22B3/22C22B3/44C22B3/42C22B1/02C01G39/00C01G47/00C01G47/003C01P2006/80Y02P10/20
Inventor 赵鸿李超屈文俊温宏利黄凡赵九江周利敏李欣尉
Owner NAT RESERACH CENT OF GEOANALYSIS
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