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Centrifugal separation method of titanium isotopes

A titanium isotope and centrifugal separation technology, applied in the field of isotope separation and preparation, can solve the problems of high product price, high energy consumption, low output, etc., and achieve the effects of large separation coefficient, low energy consumption, and technical feasibility

Inactive Publication Date: 2017-12-08
TSINGHUA UNIV
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

In addition, there are no other reports on the technology or production preparation of titanium isotope separation at home and abroad
Although the electromagnetic method can realize the separation of titanium isotopes, the output is extremely low and the energy consumption is very large, and the product is expensive

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  • Centrifugal separation method of titanium isotopes
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Embodiment Construction

[0012] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0013] For the separation of titanium isotopes by gas centrifugation, the selection of a suitable working medium is the key element. The working medium of gas centrifugation should generally meet the following three conditions:

[0014] 1) It remains stable at temperatures below 300°C and does not decompose

[0015] 2) The relative molecular mass is not less than 70

[0016] 3) At room temperature, the saturated vapor pressure is not less than 665Pa

[0017] Natural titanium tetrachloride (TiCl 4 ) has a relative molecular mass of 189.71, is difficult to pyrolyze, and has a saturated vapor pressure of about 1330Pa at room temperature, which meets the requirements of the gas centrifugation method for the working medium. It is an important intermediate, so it is easy to obtain and low in cost, which is also the advantage of choosing it as a working medium. ...

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Abstract

The invention discloses a centrifugal separation method of titanium isotopes. The centrifugal separation method specifically comprises the step of separating the titanium isotopes by virtue of a domestic gas centrifuge and a centrifugal separation working medium titanium tetrachloride. The centrifugal separation method is characterized by comprising the steps of introducing purified gas-state titanium tetrachloride into the domestic gas centrifuge in a certain feeding flow, adjusting the pressure intensity of a feeing pipe hole of the centrifuge and pressure intensity parameters of concentrated and lean pipe holes, respectively receiving the material at concentrated and lean ends, carrying out sampling when each parameter is stabilized, and carrying out analysis by virtue of a gas mass spectrometer so as to realize the separation of the titanium isotopes and evolution of a separation effect. The method is low in energy consumption, relatively large in separation coefficients and suitable for cascading large-scale production; and furthermore, the obtained lean material and the raw material are only different from abundance, and the obtained lean material can be recycled as a chemical reagent to be continuously used, so that the centrifugal separation method of the titanium isotopes has certain advantages.

Description

technical field [0001] The invention belongs to the technical field of isotope separation and preparation, in particular to a method for centrifugally separating titanium isotopes. Specifically, it uses a gas centrifuge, uses titanium tetrachloride as the working medium, and adopts a gas centrifuge method to separate titanium isotopes. Background technique [0002] Stable isotopes have been widely used in agriculture, geology, biology, medicine, nuclear industry and basic physics research. There are 5 natural stable isotopes of titanium: titanium-46 (8.25%), titanium-47 (7.44%), titanium-48 (73.72%), titanium-49 (5.41%) and titanium-50 (5.18%). In the brachytherapy of prostate cancer, depleted titanium-46 is used to encapsulate the stable isotope precursor of the radionuclide, and then activated by irradiation, so as to avoid the activation of titanium-46 into radioactive scandium-46. Similarly, Depleted Ti-46 is also suitable for use in high neutron flux environments, suc...

Claims

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Application Information

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IPC IPC(8): B01D59/20
CPCB01D59/20
Inventor 周明胜裴根潘建雄
Owner TSINGHUA UNIV
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