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Vol 169
Pages:
84-88
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Research article
Without section

Elementary processes in precipitation of aluminum hydroxide

Authors:
V. N. Brichkin1
A. V. Tsybizov2
R. S. Gordeev3
About authors
  • 1 — G.V. Plekhanov Saint Petersburg Mining Institute
  • 2 — G.V. Plekhanov Saint Petersburg Mining Institute
  • 3 — AO VAMI
Date submitted:
2005-09-30
Date accepted:
2005-10-18
Date published:
2006-04-01

Abstract

The mechanism of mass crystallization of synthetic gibbsite at decomposition of aluminate solutions is proposed. The leading role of nucleation and supersaturation in the formation of granulometry of aluminum hydroxide precipitate is shown. The methodology and experimental results of induction period determination during gibbsite precipitation from aluminate solution are presented. The surface energy of solid phase formation during carbonization of aluminate solution as a function of critical nucleation size is determined.

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References

  1. Абрамов В.Я. Физико-химические основы комплексной переработки алюминиевого сырья (щелочным способом) / В.Я.Абрамов, Г.Д.Стельменова, И.В.Николаев. М.: Металлургия, 1985. 288 с.
  2. Арлюк Б.И. Зависимость растворимости гидраргилита от концентрации содощелочного раствора и температуры / Б.И.Арлюк, Т.Б.Веприкова // Цветные металлы. 1981. № 6. С.59-60.
  3. Матусевич Л.Н. Кристаллизация из растворов в химической промышленности. М.: Химия, 1968. 300 с.
  4. Нывлт Я. Кристаллизация из растворов. М.: Химия, 1972. 150 с.
  5. Хамский Е.В. Кристаллизация из растворов. Л.: Наука, 1967. 150 с.
  6. Чернов А.А. Вопросы теории роста кристаллов / А.А.Чернов, Б.Я.Любов // Рост кристаллов. М.: Наука, 1965. С.11-33.
  7. Шефталь Н.Н. Закономерности реального кристаллообразования и некоторые принципы выращивания монокристаллов // Рост кристаллов. М.: Наука, 1975. С.195-220.

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