Skip to main content
SpringerLink
Log in

Sulfate digestion process for high purity TiO2 from titania slag

  • Research Article
  • Published:
Frontiers of Chemical Engineering in China Aims and scope Submit manuscript

Abstract

A titania slag product of Rosetta ilmenite assaying 72% TiO2 is treated by the sulfate process option of the pigmentary TiO2 manufacture. The relevant factors of acid concentration, particle size, slag/acid ratio besides the reaction temperature, and time have been studied. After dissolving the cured mass in dilute acid and clarification, the obtained solution was subjected to hydrolysis of its titanium content. The final product was bleached under reducing conditions to redissolve the residual coloring impurities before being dewatered and calcinated. The obtained results indicated that a leaching efficiency of about 92% was realized due to the presence of some refractory components in the working slag material, namely, rutile and magnesium iron titanate. The obtained white pigment assay attained up to 99.85% TiO2, while the analyzed impurities involve 77 ppm Mn and only 14 and 7 ppm of total iron and V, respectively.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Similar content being viewed by others

References

  1. Harben P W. The Industrial Minerals HandyBook, 3rd Edition, London, UK. 1999, 216–223

  2. Becher R G, Canning R G, Goodheart B A, Uusna S. A new process for upgrading ilmenite minerals sands. Proc. Australas. Inst. Min. Metall. 1965, 21: 1261–1283

    Google Scholar 

  3. Chen James H, Tex C C. US Patent, 3825419, 1974

  4. Schoukens A F S, Morris D J, Stephen MC. US Patent, 6733561 B2, 2004

  5. Sahu K K, Alex T C, Mishra D, Agrawal A. An overview on the production of pigment grade titania from titania-rich slag. Waste Manage Res, 2006, 24: 74–79

    Article  CAS  Google Scholar 

  6. Mackey T S. Upgrading ilmenite into a high-grade synthetic rutile. Journal of Metals, 1994, April: 59–64

  7. Gueguin M. US Patent, 4078039, 1978

  8. Gueguin M. US Patent, 4933153, 1990

  9. Gueguin M. US Patent, 5063032, 1991

  10. Gueguin M. US Patent, 5389355, 1995

  11. Elger G W, Kirby D E. US Patent, 3996332, 1976

  12. Jarish B. US Patent, 4038363, 1977

  13. Van Dyk J P, Vegter N M, Visser C P, De lange T, Winter J D, Walpole E A, Nell J. US Patent, 6803024 B1, 2004

  14. Borowiec K, Grau A E, Gueguin M, Turgeon J F. US Patent, 5830420, 1998

  15. Elger G W, Holmes R A. US Patent, 4362557, 1982

  16. Borowiec K. Sulphidization of solid titania slag. Scandinavian journal of metallurgy, 1991, 20: 198–204

    CAS  Google Scholar 

  17. Liang B, Li C, Zhang C, Zhang Y. Leaching kinetics of Panzhihua ilmenite in sulfuric acid. Hydrometallurgy, 2005, 76: 173–179

    Article  CAS  Google Scholar 

  18. Han K N, Rubcumintara T, Fuerstenau M C. Leaching behavior of ilmenite with sulfuric acid. Metall Trans, B, Process Metall, 1986, 18B: 325–330

    Google Scholar 

  19. Sinha H N. Solubility of titanium minerals. In: Preprints-International Conference on “Advances in Chemical Metallurgy” Bhabha Atomic Research Center. Bombay, India, 1979, 2: paper 35

  20. Johnsson M, Pettersson P, Nygren M. Thermal decomposition of fibrous TiOSO4·2H2O to TiO2. Thermochimica Acta. 1997, 298: 47–54

    Article  CAS  Google Scholar 

Download references

Author information

Authors and Affiliations

  1. Researches Sector, Nuclear Materials Authority, P. O. Box 530, El Maadi, Cairo, Egypt

    T. A. Lasheen

Authors
  1. T. A. Lasheen
    View author publications

    You can also search for this author in PubMed Google Scholar

Corresponding author

Correspondence to T. A. Lasheen.

Rights and permissions

Reprints and permissions

About this article

Cite this article

Lasheen, T.A. Sulfate digestion process for high purity TiO2 from titania slag. Front. Chem. Eng. China 3, 155–160 (2009). https://doi.org/10.1007/s11705-009-0005-z

Download citation

  • Received:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s11705-009-0005-z

Keywords

Search

Navigation