SCIENTIFIC ABSTRACT LEVIN, I.S. - LEVIN, L.I.
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CIA-RDP86-00513R000929520014-9
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RIF
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S
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100
Document Creation Date:
November 2, 2016
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Publication Date:
December 31, 1967
Content Type:
SCIENTIFIC ABSTRACT
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25343
3/02()/61/138/006/010/019
i
Separation of indium ... B103/B215
solutions. Indium can even be extracted from *0 X tend higher concen-
trated) E2 5o4 with a high distribution coefficient, whereas Sn2-t- is left
almost quantitatively In the aqueous phase. The paxtition, coefficient
6.
thus reaches 10 In to easily reextracted by washing with am .1 amounts
of 6-9 N Hal, Sn 4+ te!ng removed additionally. In an extracticn cycle of
3-4 extraction stages, the indium concentration in the HC-1 re-extract
may be increased by 60 - 80 times due to a counter flow of the initial
solution (Ref.3# V. A. U-4khaylov, Izv. Sib, oti. AN SSSR, No 4-OgEo)).
With a high Sn content it is recommended to use a 100-IrC g/1 acid
solution for the extraction since the solubility of Sr and In sulfates in
concentrated H.So 4 solutions is low. The acidity of commercial solutions
(after electrolytic removal of Sn) contalning glue and ()-naphthol has to
be increased up to 400-450 9/1 if good p;,aae separation is wanted. 5n is
thenremoved from the organic phase by washing with even stronger H 2S0 4
(700 - 900 9/1). Sometimes, preliminary dilution of the solution becomes
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Separation of indium ... B103/B215
necessary. The solutions to be extracted contalnedi 0.75 - 195 g11 of Inp
2+ 4+
5 - 10 g11 of Sn and 4 - 6 g1l Of Sn , The above method allows a
quantitative separation of In from Sn 2+ within the range of Bn t In
(30 - 10) t 1 to 5000 1 1 (indicator amounts of In). Indium was thus
twice re-extracted by 9 N HCI at 0 1 A - 2.5 t 1. A metallic indium, sponge
containing 10 - 25~4 of impurities (mainly Sn4+) was thus obtained from
the re-extract by cementation onto zinc or by,electrolysis. Sn4+ was moot
easily separated from In by washing the organic phase with HF 0 1 1).
The ratio 0 1 A - (30 - 40) j 1 was sufficient, since the distribution
coefficient of Sn44 from EF-containing solutions is very low (e, 0.01).
Indium sponge can thus be produced with a purity of 98 - 95%. After
extraction of indium, the extracting agent may again te added to the cycle.
It is recommended to use derivatives of higher alcohols (such as 2-ethyl
hexanol) to reduce the losses of extracting agent in the aqueous phase.
The above method can be applied to analytical and technoiogical purposes.
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Separation of indium B103/B215
There are I figure, I table, and 5 referenceut 3 Sovw-blDc and 2 non-
Soviet-bloc The reference to English-language pitlication roads as
followei Ref.2t E. M. Ssadden. N. E. Ballou. Anal. Chem., 25, 1602
(1953)).
ASSOCIATIONt Khimiko-metallurgicheekly institut Sibirskogo otdeleniya
Akademil nauk SSSR (Institute of Chemistry and Yetallurgy
of the Siberian Branch of the Academy of Sciences USSR)
Institut neorganicheskoy khimli Sibirskogo otdeleniya
Akademii nauk SSSR (Institute-of Inorganic Chemistry of the
Siberian Bransh of the Academy of Sciences USSR)
PRESENTEDt December 2, 1960 by I. - V. Tananayev. Academician
SUBMITTEDs December 1, 1960
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ID 25485 S/020/61/139/001/017/018
B103/B229
AUTHORSi Levin, I. S. and Zabolotsky, T. V.
TITLE: Separation of indium from zinc and accompanying elements by
extraction with alkyl phourboric acids
PERIODICAL: Akademiya nauk SSSR. Doklady, v. 139, no. 1, 11061, 158-159
TEXT: The authors state that the usual extraction methods are used only
in the analytical practice, especially to separate indium from cadmium. The
numerous technological variants of the separation of indium from zinc, and
also from cadmium, copper, leud, iron, and others, are based on clansical
methods of precipitation, electrolysis, cementation, and others. In their
work the authors dealt with the extraction separatioy Iof indluT,from the
aforementioned elements, and from cobalt. nickel. Fe . and Fe and
finally from aluminum and gallium. Mainly, a mixture was used by tt.eul
CoDsisting of 10 % pyro-, 10 % di-, sind 00 % monoortyl phonphoric ncid at
room temperature and at a ratio of 0 1 A (orgrtintc t aquqrjus) - 1 2. The
mixtures were shaken for 5 minutes, although I minute is sufficient to
obtain the equilibrium (except for Fe and Al). The authors found that
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J'/0 /
Separation of indium from zinc ... B103/B229
indium can be extracted completely not onij from sulfates of solutions, but
also from such of perchloric, nitric. hydrofluoric, oxalic, formic, and
other acids, in a wide range of concpntratiO-is., An extraction from a
solution of phosphoric and acetic acid Lurno out to be less complete.
Halogen bydracids (exceptitig HY) reextract indium even at a ratio of
0 : A - I 1 100. A concentration of indium is thereLy made possible. Thus
the authors succeeded in obtaining hydrochloric indium solutions with an
In content of 120 130 g/1, whereas tkie initial solutions contained 4.2 g11.
Zn, Cd, Ni, and Fe can only be extracted well from weak rulfuric acid
solutions (pH 2 - 5). Ti,e distribution coefficients attaining 20 - 60 at
these pH-values decrease rapidly with increasine acid concentrati-in and
amount to 10- 2 _10-3 in extraction from 10 h' H2SO4. T) separate indium
from the aforementioned elements it was extracted from sulfuric acid
solutions, whilst the organic phase was washed 3 - 4 times with R 2so 4
(400 - 500 g11), at a ratio of 0 1 A - 3 ; 1. In this case, In remains in
tho organic phase. The reextraction was carried out by means of 9 N EC1
(0 : A - 2 j 1). When the experiments were carried out u:.der hard corditions
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Separation of indium from zinc ... B103/B229
a nearly quantitative separation was achieved. The soluble leod compounds
can be extracted well at a slight acidity. However, when the organic phase
is washed with 2 N H 25o 4' a fine-crystalline precipitation of lead sulfate,
Sn1I)
settles down. Those elements tiott form
(exactly like in the case of
stable fluoride complexes cannot be extracted from the HF-solutions and
therefore cannot be sepnrated from indium (exactly like Sn IV ). The alitt.ors
III
state that a separation of indium from Fe , Al, and gallium, is possible.
According to data in the literature its separation Is also possible from
uranium, zliconium, thot-ium, scandium. and titanium. From Ue data 6iven
by the authors results that all elements analyzed by them (excepting Fe III )
practically do not influence the indium extraction, even in high concen-
III
concentrations. The indium extraction is suppressed by Fe
. whereby its
low yield in the reextract can be explained. There are 2 fib-ures, 2 tables,
and 10 referencess A Soviet-bloc and 2 non-Soviet-bloc. The two references
to English-languaea publications read as follown: B. S. Hunt et al. Ref. 6t
Canad. Mining & Metallurg. Bull, No. 566, 359 (1959); Trans. Canad. In3t.
2, 173 (1950); D- C. Madigan (Ref. 10: Austral. J.
Mining & Metallurgy,
~
.
_
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Separation of indium from zinc... B103YB229
Chem. 21, 59 (1960)).
ASSOCIATIONt Khimiko-metallurglaheakly inntitut Sibirskogo otdeleniya
Akademil nauk SS3R (Institute of Chemistry and Metallurgy
of the Siberian Branch of the Academy of Sciences USSR)
Institut neoreanicheslkoy khifuii Sibirskogo otd,-elenlya
Akademil riauk SSSR (Institute of Inorganic Chemistry of the
Siberian Brinch of the Academy of Sciences USSR)
PRESENTED: December 2, 1960#by 1. V. Tananayev, Academiclan
SUBMITTEDt December 1, 1960
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,~_LEVINS - - .
A specific case of element separation by re-extraction. 12V.Sib.
otd.AN SSSR no.105-61 162. (MIRA 15:3)
1. Xhimiko-metallurgicheakiy institut Sibirskogo otdoleniya
AN SSSH, Novosibirsk.
(Extraction (Chemistry))
`---WVIN,- Yu.B.
Conference on Extraction in AnLlytical Chemistr7. Zav.lab.
28 no.4:516-517 162. (MM 15:5)
(Extraction (Chemistry)-Congreases)
(Chemistry, Analytioal)
8/032j62/026/011/001/015
B106/3186
AUTHORSj Levin, I. S., and Azarenkop T. G.
TITLEt Determination of small quantities of indium and tin-containing
materials by extraction and photometric analysis
PERIODICAL: Zavodskaya, laboratoriya, v. 28, no. 11, 1962, 1313 - 1316
TEXTs A method of combined extraction was.slaboratedp by which small
quantities of In can be separated from large quantities of Sn and other
elements. Preliminary experiments showed that indium and tatravalent tin
can be extracted by alkyl phosphoric acids from hydrobalic solutions,
thereby, the extractability from isomolar solutions of these acids in-
creases for In in the order HC1< HBr4'_