107
Views
2
CrossRef citations to date
0
Altmetric
Original Articles

Preparation of a uranium leach liquor from a refractory ore using nitric acid solution

Pages 301-324 | Received 19 Apr 2019, Accepted 04 Sep 2019, Published online: 11 Oct 2019
 

ABSTRACT

The preparation of uranium leach liquor from refractory ore using nitric acid solution has been investigated. The particle size, nitric acid concentration, solid-to-liquid ratio, shaking time, temperature, and diffusion leaching model all have significant effects on the process. The optimum process operating parameters were particle size: 1 mm; nitric acid concentration: 50 g/l; liquid to solid ratio: 5: 1; room temperature and leaching time: 4 h. Under these experimental conditions, the leaching efficiency of uranium was about 83%. By using shrinking core model to determine the leaching model and the rate-determining step we found that temperature, concentrations of nitric acid and the mesh size are the main factors that influence the leaching rate.

Acknowledgments

The author would like to express its deep thanks to Prof. Dr. Hisham F. Ali and Ass. Prof. Dr. Mohammed H. Taha for their useful scientific discussions during the preparation of the experimental work for this research [Citation27].

Disclosure statement

No potential conflict of interest was reported by the author.

Reprints and Corporate Permissions

Please note: Selecting permissions does not provide access to the full text of the article, please see our help page How do I view content?

To request a reprint or corporate permissions for this article, please click on the relevant link below:

Academic Permissions

Please note: Selecting permissions does not provide access to the full text of the article, please see our help page How do I view content?

Obtain permissions instantly via Rightslink by clicking on the button below:

If you are unable to obtain permissions via Rightslink, please complete and submit this Permissions form. For more information, please visit our Permissions help page.