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Vol 202
Pages:
14
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The role of calcium oxide in the thermochemical conditioning of bauxite

Authors:
V. M. Sizyakov1
O. A. Dubovikov2
N. V. Nikolaeva3
About authors
  • 1 — National Mineral Resources University (Mining University)
  • 2 — National Mineral Resources University (Mining University)
  • 3 — National Mineral Resources University (Mining University)
Date submitted:
2012-09-26
Date accepted:
2012-11-07
Date published:
2013-03-01

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.

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References

  1. Броневой В.А. Условия формирования алюмогетитов в бокситах / В.А.Броневой, Л.Н.Фурмакова // Записки Всесоюзного минералогического общества. 1975. Сер.11. Вып.4. С.461-466.
  2. Мальц Н.С. Высокотемпературное выщелачивание бокситов с повышенным содержанием алюмогетита / Н.С.Мальц, Л.И.Мозисухина // Цветные металлы. 1981. №1. С. 6-9.
  3. Производство глинозема: Учеб. для вузов / А.И.Лайнер, Н.И.Еремин, Ю.А.Лайнер и др. М., 1978. 344 с.

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