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Hydrogen-mineral reactions and their application to the removal of iron from spodumene

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  • Heinrich, E.Wm.
  • Salotti, C.A.
  • Giardini, A.A.

Abstract

Pegmatitic deposits contain three distinctly different types of spodumene: 1.(1) Phenocrystic spodumene in unzoned pegmatites. This type is high-iron spodumene, with Fe2O3 = 0.6 − 0.9%.2.(2) Zonal spodumene. Large laths in central zones; it contains 0.01–0.03% Fe2O3.3.(3) Spodumene plus quartz aggregates pseudomorphous after petalite; Fe2O3 = 0.007 − 0.03%. Only Type 1 generally occurs in deposits sufficiently large and uniform to be economically exploitable. Two processes are presently available for iron removal. Both require initial inversion of the (a) spodumene to its β-dimorph: 1.(1) The chlorine process in which the isomorphous iron is converted to bon chloride and2.(2) The hydrogen process in which the Fe3+ ion is reduced to metallic iron.

Suggested Citation

  • Heinrich, E.Wm. & Salotti, C.A. & Giardini, A.A., 1978. "Hydrogen-mineral reactions and their application to the removal of iron from spodumene," Energy, Elsevier, vol. 3(3), pages 273-279.
    • Handle: RePEc:eee:energy:v:3:y:1978:i:3:p:273-279
    DOI: 10.1016/0360-5442(78)90023-3
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