Study of the physical properties of aluminothermic slags for the recovery of uranium and thorium
DOI:
https://doi.org/10.15392/bjrs.v9i1A.1513Keywords:
NORM, uranium, thorium, columbite, tantalite, slagsAbstract
NORM minerals generate, after metallurgical processing, radioactive slags that can be controlled by CNEN. Thus, it is necessary to establish a reprocessing route to make the material exemption. The route necessarily passes through the characterization of the slag from its physical properties. In this paper the results of the variation of the concentrations of U and Th oxides with the electrical, and magnetic properties of the slag, with their granulometry and with their density are presented. It has been observed that the metallurgical processing produces as slag a slag with molecular connections between the oxides that constitute it. In this way, the separation of the oxides will only be possible with the leaching of the slag.
Downloads
References
COMISSÃO NACIONAL DE ENERGIA NUCLEAR, "Procedimento para Anuência do Processo de Exportação," [Online]. Available: http://www.cnen.gov.br/images/cnen/documentos/drs/orientacoes/Controle-Exporta%C3%A7%C3%A3o-Mat%C3%A9rias-Primas.pdf. [Accessed 18 março 2018].
SAP - Systems, Applications and Products in Data Processing, SAP SE, Walldorf: SAP AG, 2017.
COMISSÃO NACIONAL DE ENERGIA NUCLEAR, Resolução CNEN 012/02: Norma CNEN NN 6.09 Critérios de Aceitação para Deposição de Rejeitos Radioativos de Baixo e Médio Níveis de Radiação, Rio de Janeiro: CNEN, 2002.
M. A. C. GÓES, A. B. LUZ and M. V. POSSA, Tratamento de Minérios - Amostragem, 4ª ed., Rio de Janeiro: CETEM, 2004.
J. A. SAMPAIO, S. C. A. FRANÇA and P. F. A. BRAGA, Tratamento de Minérios - Práticas Laboratoriais, Rio de Janeiro: CETEM, 2007.
A. B. LUZ, J. A. SAMPAIO and S. C. FRANÇA, Tratamento de Minérios, 5ª edição ed., Rio de Janeiro: CETEM, 2010.
E. J. LAWVER and D. M. HOPSTOK, "Eletrostatic and magnetic separation," in SME Mineral Processing Handbook, Englewood, Colorado: Society for Mining, Metallurgy & Exploration Inc., 1985, pp. 6.1-6.48.
L. LI, Electrical And Magnetic Separation Of Particles, Tese (Doctor of Philosophy ). Saint Louis: Washington University in St. Louis, 2010.
R. VAN GRIEKEN and A. MARKOWICK, Handbook of X-ray spectrometry, New York: Dekker, 2002.
M. A. C. GOES, M. V. POSSA and LUZ, A. B., Amostragem de Minérios, Rio de Janeiro: CETEM/CNPQ, 1991.
ASSOCIAÇÃO BRASILEIRA DE NORMAS TÉCNICAS, ABNT NBR 10005 - Procedimento para Obtenção de Extrato Lixiviado de Resíduos Sólidos, São Paulo: ABNT, 2005.
DNPM, "Anuário Mineral Brasileiro," in BALANÇO MINERAL BRASILEIRO, vol. 34, Brasília, DNPM, 2014.
CYTEC INDUSTRIES INC., Mining Chemicals Handbook, Cytec Industries Inc., 2002.
COMISSÃO NACIONAL DE ENERGIA NUCLEAR, Posição Regulatória 3.01/001 - 2011 - Critérios de exclusão, isenção e dispensa de requisitos de proteção radiológica, Rio de Janeiro: CNEN, 2011.
R. O. ALBUQUERQUE, Alternativas de Processo para Concentração do Minério Fósforo Uranífero de Itataia, Tese (Doutorado em Engenharia Metalúrgica). Belo Horizonte: UFMG, 2010.
TANTALUM-NIOBIUM INTERNATIONAL STUDY CENTER, Transporting NORM, Chaussée de Louvain: TIC, 2016.
Downloads
Published
Issue
Section
License
Copyright (c) 2021 Brazilian Journal of Radiation Sciences
This work is licensed under a Creative Commons Attribution 4.0 International License.
Licensing: The BJRS articles are licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/
How to Cite
