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Method for determination of fluorine and chlorine content of thorium dioxide

A technology of thorium dioxide and its determination method, which is applied in the field of determination of fluorine and chlorine content in thorium dioxide, and can solve problems such as inability to measure fluorine and chlorine content

Inactive Publication Date: 2016-07-27
CHINA NUCLEAR BAOTOU GUANGHUA CHEM IND
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Problems solved by technology

[0005] The purpose of the present invention is to solve the problem that the existing methods cannot measure the content of fluorine and chlorine in thorium dioxide, and provide a low-cost, high-repeatability, accurate detection, and meet the requirements of production testing. Determination method

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  • Method for determination of fluorine and chlorine content of thorium dioxide
  • Method for determination of fluorine and chlorine content of thorium dioxide

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Embodiment Construction

[0035] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0036] Such as figure 1 Shown, a kind of assay method of fluorine, chlorine content in thorium dioxide, specifically comprises the following steps:

[0037] The first step is to prepare the pyrohydrolysis system.

[0038] For example figure 2 Prepare the fluorine and chlorine high-temperature hydrolysis system as shown, and the described fluorine and chlorine high-temperature hydrolysis system includes a tube furnace 1, a quartz reaction tube 2, an inlet grinding plug 3, a flow meter 4, a compressed nitrogen inlet 5, a quartz Boat 6, receiving bottle 7 and quartz condenser tube 8. Heat up the tube furnace 1 and control it to 900-1000°C, adjust the nitrogen flow rate to 650-750mL / min through the compressed nitrogen inlet 5, adjust the water temperature in the steam generator to 90-96°C, and make the distillate flow rate approximately 1.5mL / min, cont...

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Abstract

The invention relates to the technical field of chemical detection methods and concretely relates to a method for determination of fluorine and chlorine content of thorium dioxide. The method solves the problem that the prior art cannot measure fluorine and chlorine content of thorium dioxide. The method comprises high temperature hydrolysis based on a high temperature hydrolysis system, standard curve drawing, high temperature hydrolysis baseline value determination, sample high temperature hydrolysis and fluorine and chlorine content determination. The invention utilizes high temperature hydrolysis to detect fluorine and chlorine content of thorium dioxide, provides analysis related parameters, fills the blank of determination of fluorine and chlorine content of thorium dioxide, solves the problem of detection of fluorine and chlorine content of thorium dioxide in production and scientific research and effectively cooperates engineer-to-order production.

Description

technical field [0001] The invention relates to the technical field of chemical detection methods, in particular to a method for determining the content of fluorine and chlorine in thorium dioxide. Background technique [0002] Thorium can replace uranium as nuclear fuel, or mix with uranium as fuel to produce abundant uranium-233 after fission, which effectively improves the utilization rate of nuclear fuel and reduces the production of actinides. [0003] The development of thorium fuel puts forward higher requirements for the analysis of gas elements, including the accurate determination of fluorine. In the past, spectrophotometry and ion chromatography were mostly used for the determination of fluorine and chlorine. At present, with the development of research technology, high-temperature hydrolysis ion selective electrode method is mostly used. [0004] At present, there are only related reports on uranium dioxide and thorium nitrate at home and abroad, and there are n...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/26
Inventor 王莹刘丽莎
Owner CHINA NUCLEAR BAOTOU GUANGHUA CHEM IND
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