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Vol 202
Pages:
20
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Regeneration of reversible alkaline solutions at chemical conditioning of bauxite

Authors:
O. A. Dubovikov1
E. V. Sizyakova2
N. V. Nikolaeva3
A. I. Snegurova4
About authors
  • 1 — National Mineral Resources University (Mining University)
  • 2 — National Mineral Resources University (Mining University)
  • 3 — National Mineral Resources University (Mining University)
  • 4 — National Mineral Resources University (Mining University)
Date submitted:
2012-09-12
Date accepted:
2012-11-12
Date published:
2013-03-01

Abstract

In Russia and some other countries proposed various ways to the chemical enrichment of bauxite, which usually does not affect the question of regeneration of an alkaline solution of silica, or reduce it to the release of silica in the form of calcium silicate. While the technological circuits of the chemical enrichment of the return should include an alkaline solution, after regeneration, the following parties desiliconization bauxite. It is known that the chemical enrichment is accompanied by a secondary process – the formation of hydroaluminosilicates sodium, the rate of which depends on the concentration in the alkaline solution as aluminum oxide and silicon dioxide. This paper presents data a two-stage osazhdniya silica from an alkaline solution. In the first stage in the form of sodium hydro-aluminosilicates and second in the form of calcium silicate.

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References

  1. А.с.176871 СССР, МКИ3 С 01 F 7/06. Способ переработки высокожелезистых и высококремнистых бокситов / Н.И.Еремин. 1965. Бюл. № 24.
  2. А.с.574915 СССР, МКИ3 С 01 F 7/06. Способ получения глинозема / Н.И.Еремин, А.Н.Наумчик, О.А.Дубовиков и др. № 2350342/02; Заявл.22.04.76.
  3. Производство глинозема: Учебник для вузов / А.И.Лайнер, Н.И.Еремин, Ю.А.Лайнер и др. М., 1978.
  4. Паукер В.И. Обескремнивание бокситов / В.И.Паукер, В.И.Зубарев, Г.Г.Гончаров // Химическая технология минерального сырья. М., 1977.
  5. Применение метасиликата в народном хозяйстве / Т.Г.Манвелян, Г.О.Григорян, С.А.Газарян и др. // Химия и технология глинозема. Ереван, 1964.

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