The role of calcium oxide in the thermochemical conditioning of bauxite
About authors
- 1 — Ph.D., Dr.Sci. professor National Mineral Resources University (Mining University)
- 2 — Ph.D. associate professor National Mineral Resources University (Mining University)
- 3 — Ph.D. assistant lecturer National Mineral Resources University (Mining University)
Abstract
It is well known that lime is an effective additive which allows to increase the depth and speed of the extraction of alumina from bauxite by the Bayer process. The firing is one of the operations in thermochemical conditioning of bauxite, it is rational to enter directly on the lime-stone at firing of bauxite, eliminating the special operation of firing limestone and calcined material damping. In order to test this were carried out research on the firing of bauxite in the presence of calcium oxide, subsequent desiliconization of calcined bauxite and autoclave leaching bauxite concentrate.
Область исследования:
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Keywords:
bauxite
thermochemical conditioning
thickening
filtration
bauxite's concentrate
autoclave leaching
calcium oxide
red mud
References
- Bronevoi V.A., Furmakova L.N. Conditions of formation alyumogetitov in bauxites // Notes of the All-Union Mineralogical Society. 1975. Series 11. Is. 4. P.461-466.
- Maltz N.S., Mozisuhina L.I. High-temperature leaching of bauxite with a high content alyumogetita // Nonferrous metals. 1981. N 1. P.6-9.
- The production of alumina: A textbook for university / A.I.Lainer, N.I.Eremin, Y.A.Lainer et al. Moscow, 1978. 344 p.
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