Submit an Article
Become a reviewer
Vol 211
Download volume:
Metallurgy and concentration

Quantitative seed impact on mass crystallization indicators of chemical sediments

V. N. Brichkin1
D. A. Kremcheeva2
V. A. Matveev3
About authors
  • 1 — National Mineral Resources University (Mining University)
  • 2 — National Mineral Resources University (Mining University)
  • 3 — The I.V.Tananaev Institute of Chemistry and Technology of Rare Elements and Mineral Raw Materials KSC RAS
Date submitted:
Date published:


One of the problems to be solved in the course of exsolution of crystal sediments is to re-ceive products with desired technological properties. Two fundamentally different approaches can be applied for its resolution depending on method of supersaturation and requirements to the crystal sediments quality. In case of high supersaturation growth centers arise spontaneously and their number determines the properties of the final product to a large degree. The crystallization in the metastable region of solutions prevents spontaneous crystal nucleation and an introduc-tion of the seed phase becomes inevitable in this case. The nature of this phase determines the properties of the final product to some extent. During the real process there are mechanisms that disrupt the normal growth of crystals, causing distortion, leading to heterogeneous nucleation and recrystallization with degradation of seed material even. The line between these trends is the limiting supersaturation value, attrib-uted to the unit of phase interface. In this case the development of appropriate growth mecha-nisms is proportional to the deviation of the specific supersaturation of the solution from its value limit. The traditional source of heterogeneous nucleation is the mechanical interaction of the particles. The interaction probability is proportional to their concentration. Particles’ mass and their size becomes the most significant heterogeneous nucleation factor for seed particles of the same nature and morphology at the conditions of reproducible stream turbulence. Mathe-matical description of these trends has allowed to establish the dependence of the final particles’ size on the seed concentration in the feed pulp and to show the existence of a minimum number of particles of the final product. Experimental study of the of chemical sediments’ properties that depend on the seed amount, was carried out in relation to the breaking-up of aluminate solutions of alumina production. The process of selection of aluminum hydroxide has allowed to establish the amount of the seed aluminum hydrox-ide, resulting in a product of maximum size, and thus to confirm the theoretical conclusions.

Go to volume 211


  1. Абрамов В.Я. Комплексная переработка нефелино-апатитового сырья / В.Я.Абрамов, А.И.Алексеев, Х.А.Бадальянц. М.: Металлургия, 1990. 392 с.
  2. Бричкин В.Н. Влияние калия на растворимость гидроксида алюминия в щелочных алюминатных растворах и их декомпозицию / В.Н.Бричкин, Е.А.Алексеева, Н.В.Николаева, Е.Е.Гордюшенков // Записки Горного института.
  3. Т.196. С.113-116.
  4. Бричкин В.Н. Процессы массовой кристаллизации из растворов в производстве глинозема / В.Н.Бричкин, В.М.Сизяков. Санкт-Петербургский государственный горный институт. СПб, 2005. 134 с.
  5. Жуховицкий А.А.Физическая химия / А.А.Жуховицкий, Л.А.Шварцман. М.: Металлургия, 1976. 543 с.
  6. Зеликман А.И. Теория гидрометаллургических процессов / А.И.Зеликман, Г.М.Вольдман, Л.В.Беляевская. М.: Металлургия, 1975. 504 с.
  7. Мейер К. Физико-химическая кристаллография. М.: Металлургия, 1972. 479 с.
  8. Позин М.Е. Физико-химические основы неорганической технологии / М.Е.Позин, Р.Ю.Зинюк. СПб: Химия, 1993. 440 с.
  9. Пригожин И.Р. Введение в термодинамику необратимых процессов. М.: Иностранная литература, 1960. 127 с.
  10. Трейвус Е.Б. Кинетика роста и растворения кристаллов. Л.: Изд-во ЛГУ, 1979. 248 с.
  11. Хамский Е.В. Кристаллизация из растворов. Л.: Наука, 1967. 151 с.
  12. Яворский Б.М. Справочник по физике для инженеров и студентов вузов / Б.М.Яворский, А.А.Детлаф. М.: Наука , 1977. 942 с.

Similar articles

The development of prediction method of earth-pressure balance and earth surface settlement during tunneling with mechanized tunnel boring machines
2015 A. G. Protosenya, N. A. Belyakov, Ngok Tkhai Do
Forecasting bearing capacity change of sandy-argillaceous soils in course of their contamination by oil-products
2015 R. E. Dashko, I. Yu. Lange
Comparison of the composition of platinum group minerals in chromitites and placers of Nizhni Tagil massif, Central Urals
2015 S. Yu. Stepanov, A. G. Pilyugin, A. A. Zolotarev
Strategy of rational development of Siberian platform high-quality helium resources
2015 V. B. Archegov
Study on disintegration of very clayey sands in precious metal deposits
2015 N. P. Khrunina, A. Yu. Cheban
Problem-oriented analysis of efficiency of gold mining enterprises in the Far East
2015 I. A. Kradenykh, A. V. Barchukov