SciELO - Scientific Electronic Library Online

 
vol.108 número2An algorithm for quantifying regionalized ore gradesEarly start and late start algorithms to improve the solution time for long-term underground mine production scheduling índice de autoresíndice de assuntospesquisa de artigos
Home Pagelista alfabética de periódicos  

Serviços Personalizados

Artigo

Indicadores

Links relacionados

  • Em processo de indexaçãoCitado por Google
  • Em processo de indexaçãoSimilares em Google

Compartilhar


Journal of the Southern African Institute of Mining and Metallurgy

versão On-line ISSN 2411-9717
versão impressa ISSN 0038-223X

J. S. Afr. Inst. Min. Metall. vol.108 no.2 Johannesburg Fev. 2008

 

TRANSACTION PAPER

 

Development of luminescent diamond simulants for X-ray recovery

 

 

J. Danoczi; A. Koursaris

University of the Witwatersrand

 

 


SYNOPSIS

Specially designed X-ray machines are used extensively on diamond mines for the recovery of diamonds from ores. These machines are extremely expensive and, at present, there are no reliable methods of determining if the equipment is performing efficiently. The objective of this work was to manufacture translucent X-ray diamond simulants, which would emit varying but known luminescence signals when exposed to X-rays. These X-ray diamond simulants could then be used to determine the efficiency of diamond recovery operations.


 

 

“Full text available only in PDF format”

 

 

References

1. WILLS, B.A. Mineral Processing Technology, 5th edition, Oxford: Pergamon Press, 1992, p. 482.         [ Links ]

2. ENNIS, J.E. and DUNN, F. Patent No. 99/2849: The Magnetic Separation of Particles, Spoor and Fisher, Johanessburg 1999.         [ Links ]

3. DANOCZI, J.E. The Development of Hydrophobic Tracers, Oblique Engineering (Pty) Ltd, Johannesburg, March 2003.         [ Links ]

4. SPELLMAN, Specifications: Spellman DF/FF 3k/4kW X-ray generator rack mount, RT X-ray, Johannesburg, January 2005.         [ Links ]

5. UNAXIS, Spectral Information: Optical Specifications on the K45 Filter, Labotec, Johannesburg, 18 August 2004.         [ Links ]

6. DE BEERS, X-ray Diamond Recovery Brochure: VE Machines, DebTech, Johannesburg, 1999.         [ Links ]

7. WOLF, P. X-ray Diamond Recovery Brochure: XR 2/19DW Machine, Flow Sort, Johannesburg, September 2000.         [ Links ]

8. Directorate of Health and Safety, Health and Safety Standards SA, X-ray Radiation Requirements, Cape Town: June 2005.         [ Links ]

9. KIRCHNER, A. E-mail correspondence: Calcium Tungstate, H C Starck GmbH, Goslar Germany, 26 January 2004.         [ Links ]

10. AXSON, Specification sheet: PX 521 HT, no. 6099 PX/01287, Johannesburg, 2004.         [ Links ]

11. LIDE, D.R. Handbook of Chemistry and Physics, 82nd edition, 2001-2002, CRC Press, London, p. 4-142.         [ Links ]

 

 

Paper received Apr. 2007
Revised paper received Oct. 2007

Creative Commons License Todo o conteúdo deste periódico, exceto onde está identificado, está licenciado sob uma Licença Creative Commons