Abstract
A MAGNETIZING roasting treatment of a fine-grained hæmatite-quartzite known as jaspilite, occurring in South Australia, is at present being evaluated1. When heated in reducing gases at appropriate temperatures, 550–650° C., the hæmatite in jaspilite is converted to magnetite. Extensive microcracking also occurs in the quartz matrix (Fig. 1A). This cracking allows freer access of reducing gases to the hæmatite particles undergoing reduction and facilitates grinding prior to magnetic concentration2.
This is a preview of subscription content, access via your institution
Access options
Subscribe to this journal
Receive 51 print issues and online access
$199.00 per year
only $3.90 per issue
Buy this article
- Purchase on Springer Link
- Instant access to full article PDF
Prices may be subject to local taxes which are calculated during checkout
Similar content being viewed by others
References
Edwards, J. R. J., and Salamy, S. G., Amer. Inst. Mech. Eng., Annual Meeting, New York, Feb., 1960 (to be published).
Salamy, S. G., Broken Hill Pty., Tech. Bull., 4, (1), 2 (1960).
DeVaney, F. D., Trans. Amer. Inst. Mech. Eng., 193, Mining Engineering, 1219 (1952).
Van Hofsten, G., V ARM Bergsmann Ann., 59 (1951).
Baldwin, B. C., J. Iron and Steel Inst., 177, 312 (1954).
Darken, L. S., J. Amer. Chem. Soc., 70 (6), 2046 (1948).
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
LEAN, J., TUCKER, K., HOLLAND, B. et al. Formation of Fayalite in Roast Reduced Jaspilite. Nature 187, 683–684 (1960). https://doi.org/10.1038/187683c0
Issue Date:
DOI: https://doi.org/10.1038/187683c0
This article is cited by
Comments
By submitting a comment you agree to abide by our Terms and Community Guidelines. If you find something abusive or that does not comply with our terms or guidelines please flag it as inappropriate.