TECHNOLOGICAL BASIS OF THE PROCESS OF ZIRCONIUM AND HAFNIUM SEPARATION

IF 0.5 Q4 PHYSICS, NUCLEAR

Problems of Atomic Science and Technology Pub Date : 2023-10-12 DOI:10.46813/2023-147-103

A.P. Mukhachev, D.O. Yelatontsev, O.A. Kharytonova, V.G. Shevchenko

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Abstract

The paper presents the results of industrial testing of the process and equipment for the extraction separation of zirconium and hafnium in a single technological cycle with the production of high-purity nitrate compounds and pure nitric acid solutions as raw materials for the production of sodium nitrate. It is shown that the efficiency of the extraction process is determined primarily by the purity of the nitric acid solution by the content of a critical impurity – silicic acid, which causes an undesirable emulsification process and disrupts the stability of the process. Optimal conditions have been determined under which the formation of non-extractable forms of zirconium and hafnium is excluded. The replacement of pulsating columns with centrifugal extractors reduced operating costs by reducing the volume of a one-time load of a flammable extractant and its losses as a result of hydrolysis. This increased the degree of separation of zirconium and hafnium. Centrifugal extractors provided high process kinetics, reduced production areas, and increased labor productivity and product quality.

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锆铪分离工艺的技术基础

本文介绍了以生产高纯硝酸化合物和纯硝酸溶液为原料生产硝酸钠的单工艺循环提取分离锆铪的工艺和设备的工业试验结果。结果表明，萃取过程的效率主要取决于硝酸溶液的纯度和关键杂质硅酸的含量，硅酸会引起不良的乳化过程，破坏萃取过程的稳定性。确定了排除锆和铪不可萃取形式形成的最佳条件。用离心萃取器代替脉动塔，减少了一次性可燃性萃取剂负荷的体积及其因水解造成的损失，从而降低了运营成本。这增加了锆和铪的分离程度。离心萃取器提供了高过程动力学，减少了生产面积，提高了劳动生产率和产品质量。

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来源期刊

Problems of Atomic Science and Technology 物理-核科学技术

CiteScore

0.70

自引率

50.00%

发文量

审稿时长

2-4 weeks

期刊介绍： The journal covers the following topics: Physics of Radiation Effects and Radiation Materials Science; Nuclear Physics Investigations; Plasma Physics; Vacuum, Pure Materials and Superconductors; Plasma Electronics and New Methods of Acceleration.