1070-4272/02/7512-2033 $27.00 C 2002 MAIK [Nauka/Interperiodica]
Russian Journal of Applied Chemistry, Vol. 75, No. 12, 2002, pp. 2033!2034. Translated from Zhurnal Prikladnoi Khimii, Vol. 75, No. 12, 2002,
Original Russian Text Copyright + 2002 by Morachevskii.
Mel’nichenko, E.I., Ftoridnaya pererabotka redkometal’nykh
rud Dal’nego Vostoka (Fluoride Processing
of Rare-Metal Ores from the Far East), Vladivostok:
Dal’nauka, 2002, 268 pp.
The widely diverse existing technologies for pro-
cessing of rare-metal ores are based on complicated
hydro- and pyrometallurgical operations and have
disadvantages related to ecological safety. In the Rus-
sian Far East, there are rather large deposits of such
rare metals as tungsten, titanium, and zirconium, but
no processing of these raw materials is done in the re-
gion. The monograph by E.I. Mel’nichenko summa-
rizes the results obtained in scientific studies of schee-
lite, baddeleyite, ilmenite, sphene, and rutile process-
ing to obtain oxides of rare metals, and considers
a number of other technological problems. The book
comprises a foreword, ten chapters, and a list of ref-
erences, common to the monograph.
The brief foreword (pp. 5 and 6) notes the advis-
ability of using widely a common reagent, ammonium
bifluoride (hydrofluoride), in processing of various
rare-metal raw materials. This recommendation is
largely based on the presence in Primorskii krai of
unique deposits of fluor-spar.
The first chapter (pp. 7313) presents evidence con-
cerning the mineral resources of the Far East. This re-
gion is a part of the so-called Pacific ore belt. Quite
a number of minerals from Primor’ye govern the bal-
ance of mineral resources of the country.
The second chapter (pp. 14325) discusses the use
of fluorinating agents in metallurgical processes ([fluo-
ride metallurgy]). The author emphasizes that am-
monium hydrofluoride is a serious rival to fluorine
and hydrogen fluoride in fluoride metallurgy.
The third chapter (pp. 26371) is concerned with
problems associated with processing of tungsten con-
centrates. It describes the existing industrial technol-
ogies for manufacture of tungsten and physicochemi-
The resources of fluor-spar ores are considered in more detail
by V.I. Saenko, V.P. Yushkevich, V.V. Korshunov,
(Tsvet. Metal., 1999, nos. 8!9, pp. 33!38).
cal foundations of methods used in processing of
scheelite concentrates with NH
. Much attention
is given to properties of ammonium oxofluorotung-
states and tungsten oxyfluorides.
The fourth (pp. 723110) and fifth (pp. 1113169)
chapters contain data on processing of zirconium and
titanium concentrates, possibility of using ammonium
hydrofluoride in technological processes, and prop-
erties of fluoride compounds of zirconium and tita-
The sixth chapter (pp. 1703193) discusses the be-
havior of molybdenum and chromium oxides heated
. The seventh chapter (pp. 1943200)
summarizes results of original investigations into pro-
cessing of gold- and silver-containing ores with the
use of the fluoride technology. The eighth chapter
(pp. 2013213) describes to other promising fields
of application of ammonium hydrochloride (dressing
of the fluorite concentrate, production of biocides).
The ninth chapter (pp. 2143221) is concerned with
thermodynamic substantiation of the use of NH
for processing of rare-metal ores. The tenth chapter
(pp. 2223244) presents rather useful evidence con-
cerning the corrosion resistance of construction mate-
rials in various fluorine-containing media in a wide
range of temperatures. Also, the stability of high-nick-
el steels, nickel-based alloys, and fluoroplastics of
domestic manufacture is considered.
The list of references (pp. 2453261) covers 308
original studies, inventor’s certificates, patents, and
other sources. The highly informative list gives titles
of journal articles. A large number of works cited in
the list have been carried out with participation of
the author of the monograph.
The book has technological orientation and clear
and logical structure; it is devoted to solution of a
specific important problem and is well written. Some
critical remarks may concern, in our opinion, the ninth