SCIENTIFIC ABSTRACT KOZIN, B. S. - KOZIN, L. F.

• Document Type: CREST
• Collection: Scientific Abstracts
• Document Number (FOIA) /ESDN (CREST): CIA-RDP86-00513R000825820001-5
• Release Decision: RIF
• Original Classification: S
• Document Page Count: 87
• Document Creation Date: November 2, 2016
• Sequence Number: 1
• Publication Date: December 31, 1967
• Content Type: SCIENTIFIC ABSTRACT

pp U.C,
r s ir, i i. L -3

CIUMOYORDIK, G.I.. prof.; KOUDY, I.T., in2,L,.; KOZIL1~3--, in2b.
Uning analytical methods for dstPir7.,Aning the csectlonal i3paee,
of trains. Trarisp.atroi. 10 J.% 160.
OAM-1, 13: 6)
(Railroads-Train speed)

CEMIIOMORDIK, G.I., prof.; KOZI?J. B.S., inzh.; KOZLOV, I.T.. inzh.
Economically expedient traffic limitations on single-and
double-track railroads lines. Transp. stroi. 10 no. 12:46-
50 D 160. (MMA 13:12)
(Railroads--Traffic)

USMANOV, Kh.U,; SADOVIIIKOVA, V,I.; KOZIN, G.M.
Purification of cotton cellulose. Uzb. khim. zhur. no.2:21-28 153.
(MIRA 11:8)
l.Chlen-karrespondout AN UzSSR (for Usmanov). 2.~In~titut khimii
rastitellnykh veshchestv AN 'UzSSR.
(Cellulose)

UT-1ANOV, IVh.U. KOZITI, G.M.
Apparatus of the -tu-rbom6tTl,.; -.1tiation of polym,-~r 5ollatimo.
Kbim. i flz.--khljr,. pri.rod. i sint. It,2
('-!Tli A18 -~~ 1 )
I. (-,I ilen-lr on e9 porid-~n to Il Tj ~Y5'-, R (~ 'I,; m.'ru

KANDYIVi-, M.I., gornyy inzhener; KOZIN, G.N.. inzhoner-metallurg.
Increasing lumpy ore output to one of tho moot Important tasks
In mining. Gor.zhur. no.1:24-26 Ja 156. (KLRA 9:5)
(Mining engineering)

AL rri,A- AtY
1
,
- "
l
4
Ay ..... v, ...j .
k
.
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. S.
)
ITL4, "
, th. C_-'., moltinr ~nop Of tn'
U** of U'u"
.
I
h
j9
PERIODICAL to 59. 9. Pp 767-792 (USSR)
ABSTRACT$ An OUtILnG Of the or the convertor ~Ltlmg
:hep1~iud&_D&
Oao detalLe rog*rdtng oxygen blowing
,a
quip.ent .4 a method used ror the cleaning or the
..swe' tar waste gas, the Lnflun.. Of th
... po.itj..

'
*
th
of Ir t A ri L.
* *11 h. hsteel ad
:4
:,
.
r
In
:P
.resul a are giro
Ptaim
.
polmtm
toy
.
%,
t
,yg*, to 1- r Or
,
b
ou,s,ed with . Pact. sChanism vertically up :.
:
:::
?-
A" rotate "Ou.nd the vertical axis by L20 to 128* (Fig I):
G".. I.mwLg the co.w.rt- ". p .... 4through
a
ltl all aaln,
-~bb,r
Want.".
W:
cyal"
L~.
h
r"t1_., Th.
.
1b
r , to dia.
j
.
b.ight f the Yllmd~l..l p-j IS .._. aslely to
) :
:
:-I the a-- -aA ta ~~.p larger d..c p-ticlo.1 it
-aMess* :
!00 to 300 a3/h~ of water at a pressure of
Card 1/4. 6
t
to 9. On* to the high velocity of the SmA 460 to A
120 Was*) the water is dispersed Into a fine toist.In
the W-tury tube with a throat di-ter or 5lo ass'
or let with u.p..d.d solid. e.C.LAt. List.
.O.Mutrotle'aly ls~g. drop. of . el.rry ~UL.h or. -glet
1. the Cy I.. And passed Jut* A 0*,r M. "to
aa the do;;** or cIes,ains t.!h...AP*Zd;a. Th.
Z"
sompa.iti,nm or Pig-.:r warie. w"blA the foll~Lng
ir" U a
11-citat al. 0.30 -80, , L.0 - 1.41 3. 0.030 - 0.0511
" 0. 09 -O.L.I. Th.0;;fIu.=- LIL~ . L..pLg i%. ..
the .nt..t or phosphoru. in th:rfL.I":d at .1 is on-
L. rig 3. Tle- PtU- --at Of -ili- La Pis ---
reload to b.4 .6%. Dosulpha,ris.aclon of instal
det-irX.OwIth"doec, o&nL=g suagAnese content It% the p1X
L_ .Pit L_ cont.1,Lug 0,0 % sulphur an Ul:f ... tat.
test I... thAte 1.44% air Th. qualt,I
has ty-.
t.;."ao&4.r&bla influence an the rate or CA is. -d
at the stag. In view of a co-Iderabi
propa~tlati of LncoaPIetGI7 rLr*d lines, (up to 20%)
Addition of bauxite (1.3 to 2%~ Is used. Changes the
6,eap-tti.. of ..t.2 during bl-Lg ar. shown 1. Table I
Card 2/4 amd frequency distribution of costs with warlaus lov*la
-or baphn....t.. r--wari:u. typ4W-6T-
. T 11
A-4 T r-b;;,.. V- L ":Iyp*
a...If
.4 Lag weA417Z
--I.. for bl"' ,r. todth
t1.'dr "Is
beat results A obtainedh. y1
or 65 mat diLor w2th the outlet w14.el.9 to 75 too.
Th. optionist rate of blowing to b-
.0 .1000 - hot....
io .3/.Lu at - diets- metal. CO- a.
mamols and A"'f- of ta* ded' -t!t In
ttner at. ."Sh A. eight of
=Ahow..TabI:137--sh. --t-1
haot varied fro' 33 to 42 to... 1jadi'le.-L beat. with
ek-s.. of 70 *0 72 t-,C.-fAt-d the p-lbilit at
bi-I.g . Large asou.. .At.1 with I tuy-.. A
pr Pisani., 4-igo. far the tr.-r.r
to 'An
f* .1 r f-; 53Ln..t.. It is
b:tt- V.-I-9 -: -,.1"'n-o 6 eight
_1"4.4 that ne in.th p dultIvit: can
;.is
let. ~ _I
'. Atn. t:,.ro d
t nuth&ra.
.b by :,
.9 providing the quality of -er toot.rial: Is
Card V#A .P:,1*&.1. Th. duzabilitY of c9nvor tar 11.1. -Led
A:1 Ly
alres,68%
;:,u --at- ST 380-,o far
'0 'Ir* P..Tb.
.006%)
-t steel C.Atrogon contest On Av~r&X:d0._..t.4 to
tool. degree phurizotiou bta~
of 4-oulh
,0%,at the whole sulphur L.Sr.d.c.d 1,st-lst a bath with
b"S.d). Th. of 0to 100t.0
rs to .4-t-9--om, Thor. Are
.." ;oagld.r.4
Is cAgM. table..
AS30CIATION31 T.WXICb^ -4 -
Sawed xr1warochatol', (,Xr1varoAh&t4V. WOVkm)
Card #4/41

AFANASIYEV, S. G., kand.tekhn.nauk; EPSHMI N, Z. D., inzh.;
KRIVCHENKOY Yu. S., inzh.; GURMCH, B. Ye., inzh,;_KOZ.P-I,--Q,-Np.. inzh.;
RUBIIISKIY., P. S., inzh.; KUKURUZITYAK, I. S., inzh.; GUL'YEV, G. F.9
inzh.; CHIGRAY, I. D., inzh.
Operation of the "Krivorozhstall" converter plant. Biul. TSIICHM
no.5*2-16 161. (MIRA 14:10)
(Krivoy Roq--Metallurgical plants)
(converters)

KOZI . inzh.; KOILANOV9 G.S., inzh.; TOAFROV, N.F., inzh.;
~t
SAVIN, N.M., lnzh.
Rapid method for the fritting of a 600-ton open-hearth furnace.
Met.i gornorud.prom. no,5j76-78 S-0 162. (MM 16:1)
(open-hearth furnaces--14%intenance and repair)

KOZINY G. ff., inzh.; OLMIKOVAP L. M., inzh.
Nitrogen in oxygen-converter steeL Met. i gornorud * r
no.1:18-22 Ja-F 163. (MIRA .6.,J 0m,
1. Krivorozhskiy metallurgichoskly zavod imeni Lenina,
(Steel-Ifitrogen content)

KOZIRP G.N.; KRTVCHENKup Yu.S,; KURINA, A.P.; VITI, Ye.F.
Service conditions and wear characteristics of refractories in
oxygen-blown converters. Ogneupory 28 xio.2-71-78 163, -
'(MIRA 16:2)
1. Krivorozhskiy metallurgicheskiy zavod im. V,,I.Lanina.
(converters) (Firebrick)

KARNAUKHOV, V.V.; SOBOLEV, S.K., kand.tokhn.nauk; GULIYEV,
KRIVCHENKO, Yu,S,
Automation of the determination of the 3topping moment of
blovelng in an oxygen-blovn convertn. Mkit.1 gornorad. prom,no. 2:
26-28 Mr-Ap 164. (141RA 170)

KOZIN, G.N.; KRIVCIIENKO, YU.S.
.
nding the aa.,iortinatit of oxygen-blown convertor steel.
Expa
14et. i gornorud. prom. no. 2:63-64 W-Ap 164. (MIRA 17:9)

g
Al
' ON
a 10 r,
or
~01
MOW;
It WOW
N W-N~F=7R,
'N
zax
rt
GUR A,
Oft
CUP
"ADS
Ewllsw'~.~:"m_ -0. yr~,1VO,
r9
ew" TIT7M.J
Ve
'fit! 0 j~p
IW 'A
~u b
5,
3"R --deir 4~1~ft
_041
k _gv
onve
Wfin oj AS-ASUA"
N--
-'t A
rk
Du Vr On

NOVIKOV, A.N.:, N-FSHA, A.V.; RODGUITS, Yu.A.; KORZI-FIIFVSKIY, M.;
,,I'I.IYFV, KUDRINA, A F.
Valuable contribution of inventors and efficiency promoters
in the improved technical level of enterprises of refractories.
Ogneupory 29 no. 5:194-196 164.
lesin-dolomite-magnesite unfired refractories for steel smelting
converters with a top oxygen blow. lbid.zI97-200 041RA 17:7)
1. Vsesoyuznyy institu' ogneuporov (for Novikov, Napshn,
1(odgollts). 2. Za id 'Magnezit" (for Korzhenevskiy). 3. Zavod
IlKrovoi-ozhstall" (for Gullyev, Kozin, Kudrina).

SERDYUK. S.M. -P GITI. IYEVY G.F. ; Krr,,TN, G,N. . '31.r,.-,T, P .
Metal temperature control in canvortAir!! vii.h -,hf) use of caramic
metal zirconium boride tipsa Porosh.meL. 4 no.5198-101 S-0 164.
(MT RA 18 F 10)
1. Tnstitut avtomatiki Gosplana ilki-SSR i zavod "Krcv,)ro?hst,,il I-,.

INI 0 110 ATIN, S.K-,
Inn, nauK- r
'till-
nle"61 tind f~urbon ::arjtr.7jt
f, o, I~n a -(:rve-,-ter durring sl-avenglng, :)rib.
(,kITRA - R; P)
I L L

51

Kozill-f T. (Andizhan, Uzbokokaya SSR)
,-,, -
Snlf-hpating of stored raw cotton. Pozh.dejo 4 no.8:10
A g I "18. (MIRA, 11:9)
Ooito'h-' Siarage)

KOZIN, I.
TIChief of the "Kuibishevg1drostroi"- Kuibishev Hydro-Electric Plant on the
River Volga. Velikie Stroiki Kommunizma (Great Constructions of Communism),
Acad. of Pedagogic Scis. of the RSFSR, Moscow, 1951, 383 P.

KOZIN, I. -
- City of mineral glory. Mast. ugl. 6 no-8:23-24 Ag 157. (MM 10:9)
(Kopeysk--Hiatory)

KOZIN, 1. -
. .............. .
Recreation nrganizern. Hast.upl. 8 no.6:21 Je '59.
(mlIlk 12:10)
(Go&l rminers)

I KOZIN,- I., jg!.~eys~)
Man with a restless heart@ Mast-ugl. 9 no.11:7 T160. (MM 13:12)
(Coal miners)

KOZIN, I.
Cherenkov's method for propnring glue color. Stroitell 2 no.4--5:15
Ap-MY '56. (Paint) (MLRA 10:1)

KOZIN. 1.
Cements for fastening tiles. Stroitell 2 no.8!19 Ag 156.
(Cement) (KM 9:12)

. TJ
0
Tile onttnrlm tool case. Stroitmll 2 no*9:26 S156. (MIRA 10: 1)
(Tile laying)

XOZIN, I.
Hov to uGe the MCh-26 lacquer. Stroitel' no-5:27 My 159.
(141RA 12:8)
(Lacquer and lacquering)

KOZINY I.
Mechanized application of sizing. Stroitell. no.7:34 J1161,
(MM 14:8)
(Finishes and finishing)

7
D.
Phe Influonce of Druir-Induced Slc(lp on the i-'o ntio, of tibo It -
id the Intensity of Pha~rocytonis.ll Cand Ved, 'Sci, Gor'Kiy St!-.te fledical
Inst, Gorlkiy, 19.113, OZhBiol, "o 2, 30-0 5Lp)
Survey off Scientific and Technical DiF-.,~ertatlwjs Defended at
L -ld
j7j!7her ` ucatlo,ial Institutions (1.0)
SO: Sum. :10. 431, ~ llq 55

KOZINP M.
70th annivereary of the birth of Karlis Strazdins. Vestie Latv
ak no.8:161-163 160. (EEAI 10:9)
(STRAZDINS, KARLIS) (PIMICIANS, LATVIAN)

KOZDA M. (Riga)
Economic viewo of Fricis Garais (7. Zemtsev). Vestis Latv ak no.9:5-16
10:9 160, (EEAI 10:~?)
1. Akademiya nauk Latviyokoy SSR, Institut istorli i materiallnoy
kulltury.
(Latvia-Economic conditions)

KOZIN, M.
Unsatisfactory figures. Prom.koop. 14 no.8:27 Ag 16o.
(MIR& 13:8)
1. Zamentitell prodsodatelya pravlonlya oblpromsovetEL, g.
Gorlkiy.
(Physically handit--appod--RehabLlitation)

KOZIN, H.
Organization and tasks of the local antiaircraft defense in
apartment buildings. Voen.znan.-13?.] no.3:18-19 - kir 156.
(Civil defense) (MLRA 9:7)

KOZIN, 14.
Economic Policy
Material resources and their significance in the planning of the national economy,
Plan. khoz. no. 4, 1952
Monthly 11LI of Russian Accesaions, Library of Congress, December 1952. UNCLASSIFIED.

Klozi!~;, A.
KOZI":, k. -- "The Irrigation System ,jnd Water Consumption of -;, ring
'Hlicat in Rostov Ohlast." 14in Water Economy LS7-Sh, Southern Sci
ites Inqt of Hlydraulic Eziginenrin,! and Soil Lanrovement
Novocherkasnk, 1955.
(Dissertation for the Degree of Candidate in Agricultural Sciences).
SO: fn1,-,hvqya Lotopi-, I , No 9, 1956

KOZIN, M.A., kand. sellskokhozyayotvennykh nauk,
Adding supplemental fertilizer to irrigation water. Zemeledelia 6
no.6:48-51 Je 158. (min lit6)
(Fertilivers and manures)
(Irrigation)

I ' SOV / 137- 58-12-24446
Translation from: Referativnyy zhurnal. Metallurgiva 1168, Nr 12: p 71 (USSR)
AUTHORS: Baram, A. N , Nakhimov, A.M., Kozin. M D
TITLE: The Rolling of Flat and Round Spring Steel at 11-c Kirov Plant (Pro-
katka ressornoy 1 pruzhinnoy stall na Kirovskorn zavocle)
PERIODICAL: 'rr. Mezhvuz. nauchno-leklin. konfeicnts7, tict temu Sov reni
dostiz~. prokatn. proiz-va . Leningrad, 10;8, pp 151-1~4
ABSTRACT: A new pass grooving for grooved flit spring steel permitting prOCISO
positioning of the projection dnd depression is developed and intro-
duced. An initial llx88 strip is reeled from a square 60x6O rnm
billet in 3 open passes I.Pi, whereupon it :s sent to an edging pass
that brings the side edges to proper dimensions. Next come a
closed P and an edging and finishing open P. Since tle strip enters
the closed P with a width determined in t1le first edging P: the pro-
jection and the depression are formed to sufficient accuracy.n
order to produce spring of round section without scratches, laps, and
seams, the billet has to be conditioned over ts ent-ire surface; hence
prior to the rolling of round sp-ing steel tl-e leader and finisl-ing
Card 112 rolls should be changed and roller guides b-ougH into position " The

SOV- 137-j8- I Z-24446
The Rolling of Flat and Round Spring Steel at the Kirov Plant I.cont.)
system of immersing the billets in the furnace is changed so that 'the springs pro-
duced will be decarburized to minimum depth They are ilmy eniplaced not ill I
layers but in one, and this reduces bv t--vo-Hiirds tile Soaking 1111le of the metal. in
the furnace.
Ya- G.
Card 2/2

KOZIN, I.G., inzh.; FIMBOT14, G.I., inzh.; ZNLITM, R.S.. inzh.
Efficient mobile bitumen boiler. Suggeated by I.G.Kozin, G.I.
Feferboim, R.S.Zelitear. Rats.t izobr.predl.v stroi. no.16:
73-75 16o. (MIRL 13:9)
1. Trest Mosotdalstroy NO-3 Glavmoestroya, MoOkva, proyezd Serova,
d-3-
(Bitumen)

ROZIN 9 1. 1.
------
Present state and problems in the improvement of first and Emergenc7
aid for industrial accidents in the city of Kharkov. Orotpetravmo
i protez. 21 no.2t53-57 F t6O. (MIRA 13-0-2)
(INDUSTRM ACCIDIMTS)
(MiAMOV-PIRST AID IN MINM AND IIIJUM)

SHAKUIAP N.M., inzh.; KOZIN,,-IS~., inzh.
Radio signaling system for inclined man-hoisting. ugol, Ukr.
"'5'no44:36 Ap '61. (MIRA 14:4)
(Radio in mining) (Mine communications)

5(2) SOV/78-4-7-40/44
AUTHORS: Shokol; A. A., -Kozin, L. F.
TITLE- The Co-precipiltation of Indium With Ferric Hydvoxide
(Soosazhdeniye indiya a gidrookiafyu zheleza)
PERIODICAL: Zhurnal neorganicheskoy khimii, 1959, Vol 4, Nr 7,
pp 1687-1691 (USSR)
ABSTRACT: The investigation of the phenomenon mentioned in the title
was carried out by the plotting of precipitation curves at
various pH-values and temperatures. Precipitation was carried
out in a solution of iron-(III)-sulfate and indium sulfate,
114
which was marked with In 9 by meano of a sodium lye. Tables I
and 2 as well as figure 3 show the expqrimental results. From
table 4, which gives the results obtained by a precipitation
by means of an urea hydrolysis at 900 it follows that a local
concentration effect is not responsible for co-precipitation.
Table 5 and figure 1 mention the precipitation results ob-
tained by vaccination with Fe(OH) 3* The experiments confirm the
adsorptive character of co-precipitation. The increasing co-
precipitation with increasing temperature, haviever, also
Card 1/2 indicates the occurrence of secondary processes such as the

The Go-precipitation of Indium With Ferric Hydroxide
SOV/78-4-7-40/44
formation of a solid solution of adsorbed indium hydroxide with
ferrihydroxide. X-ray examinations proved that the crystal
lattices of the two hydroxides are disturbed. There are
3 figures, 5 tables, and 10 references, 6 of which are Soviet.
ASSOCIATION: Institut obahchey i neorganichoskoy khimii Akademii nauk USSR
(Institute for General and- Inorganic Chemistry of the Academy
of Sciences, UkrSSR)
SUBMITTED: April 24, 1958
Card 2/2

18-3100 65692
S()V/136-59-10-9/18
AUTHORS: Shokol, A.A., lakhomova, A.D. and Kozin, L.F.
TITLE: Production of High Purity Metallic Thallium by tile
Amalgamation Method
PERIODICAL:Tsvetny-ye metally, 1959, Nr 10,, PP 52-57 (USSR)
ABSTRACT: The object of tile investigation described in tile present
paper was to explore the possibilities of usin& the
amalgamation method for tile preparation of high 1-,urity
thallium. The amalgam process, when usedi for extracting
thallium from solutions obtained by decomposition of
thallium concentrates, makes it possible to simplify tile
existing technique, while tile high jurity of the metal is
ensured by the application of' anodic oxidation of the
obtained amalgams. In the experiments carried out by the
present authors, a 21/0' Cd amalgam was obtained by
cementation of a solution resultant from leaching and
industrial hydrated concentrate containing (g/1):
1.0 T1, 0.6 As and 50 H2SO4- The recovery of thallium
in the amalgam amounted to 90%, decreasing to 7090' when the
process was repeated. The thallium content in the amalgam
obtained after double cementation did not exceed 2~u, No
Card 1/10 satisfactory results were obtained when tile acidity of the

65692
SOV/136-59-10-9/18
Production of High Purity Metallic Thallium by the Amalgamation
Method
cemented solution was reduced to 5 g/1 of free sulphuric
acid; high proportion of arsenic, iron and other
impurities present in the solution resulted in rapid
conversion of mercury to slag. This showed that cadmium
amalgam can be used for cementation of thallium from
purified solutions only. Better results were obtained
when solutions, resultant from decomposition of bichromate
concentrate, were used. In cementation of thallium with
cadmium amalgams from solutions obtained by decomposition
of a solution of pure thallium, bichromate, recovery of
95 to 97% can be attained, the degree of utilization of
cadmium being 80ye. The results of experiments in which
the effect of the acidity of tile solution on cementation
of thallium with a 5% Cd amalgam was studied (volume of
the solution - 100 ml; duration of the treatment - 6 hr)
are reproduced in Table 1 under the following headings:
T1, Cd and H2SO4 content (g/1) in the starting solution;
quantity (g and %) of TI, transferred into the amalgam;
quantity (g) of Cd (a) spent oil thallium and (b) gone into
Card 2/10 the solution; useful consumption (5o') of cadmium;

65692
SOV/136-59-10-9/18
Production of High Purity Metallic Thallium by tile Amalgamation
Method
application of tile amalgam (first time, second time, etc).
It will be seen that, on average, 95% thallium ivas extracted
in the amalgam; when the free l12SO4 content ill the solution
was reduced froin 13.1 to 3.9 9/1, tile degree of
utilization of cadmium increased from 57 to 93,u. In the
experiments in which the amalgam was re-used five times,
the thallium content in the amalgain reached 7,',j, the degree
of utilization of cadmium amounting to 65%. In the next
series of experiments, decomposition of the obtained
amalgam (containing 2% Tl,, 0-50% Cd) witil. solutions of
various oxidizing agents, was studied; in each experiment
2 ml of the amalgam was treated with 10 ml of tile solut.-A.on
and the results are reproduced in Table 2 under the
following headings: the oxidizing agent (5'/p Hg--(No-)2,
0.1 mol Fe2(SO4) ditto, 0.1 mol. FeC139 ditto)i
duration of tile ?r1eatment,minutes; quantity (g) of Tl
and Cd found in the solution after comentation; tile
potential, E, (v) of the amalgam (after cementation)
referred to normal hydrogen electrode, (Irl tile experiment
Card 3/10 marRed with an asterisk, the amalgam was converted into

. Q
65,-'9~
sov/i36-jq-l(--q/18
Froduction of High Purity Metallic Thallium by the Amalgaiitation
Method
paste.) All the investigated substances, with tile
exception of ferric chloride, secured full decoml;osition
of the amalgam; for practical reasons, it is expedient
to use for this purpose the iron sulphate zsolution. 'file
anodic oxidation of tile amalgani was carried out in all
electrolyte containing 60 g/l NH40H and 90 g/I NH4CI,
pure mercury being used as the cathode. Tile results of
the electrolysis of 56.25 g of a 55o thallium amalgam are
reproduced in Table 3 under the following headings:
duration of the treatment, minutes; voltage, v;
current density, amp/dm2; tile anode poteritiai, E, (v) In
respect to normal hydrogen electrode. The change of the
anode potential with time was gradual; the electrolysis
was terminated when a white deposit (thallium c1hloride)
appeared on the anode surface. The products of
electrolysis contained: thallium amalgam (anode) -
4.975% TI (corresponding to 99.5',o' of tile thallium content)
and 0.025% Cd; cadmium amalgain (cathode) - 0-450,u' Cd and
0.0111/0' Tl; electrolyte - less than 0.0015. TI and
Card 4/10 0. 0255'9 Cd. Thus, it was shown that practically all

6,,:692
SC)V/136-59-10-9/18
cadmium can be extracted from titiallitilli am,,jlwai-ii bv
electrolysis in an anunoxiia-cl-iloride electrolyte. The
flow sheet of the process used in the large-scale
experiments on the extraction of thallium from bichromate
concentrate is reproduced in Fig 1. The bichromate
concentrate was obtained froin tile solution after
decomposition of 5.7 kg of industrial hydrated cake.
From the resultant solution, containing 8' g/l TI and
4 g/1 H2504, thallium was extracted by room temperature
cementation with a 51'0 Cd amalgam; I kg of the amalgam
(re-used five times) was used for 10.5 1 of tile '-~Ollltioll-
The typical results obtained are reproduced iii Table 4
tinder the following headings: app.lication of the
amalgam (first, second time etc); duratioii (hr) of' the
cementation; proportion of Tl (% of the initial content)
remaining in the solution after cementation. The obtained
amalgam contained 8.440,1A Tl, 2.6o,, Cd, lead, tin. bismilith,
copper and other impurities. For the preparatiori of high
purity metal it is advisable to use a more coiicenLrated
amalgam. If electrolysis is used for thi.3 jairuose aild if

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Production of High Purity Metallic Thallium by the Amalgamation
Method
an electrolyte is employed in which the 1;otential of
cadmium is more negative, a cadmium-free amalgam %-.,i11
be obtained; the more positive metallic impurities will
remain in the "primary" amalgam. ClIrves plotted ill Fig 2
illu.strate the relationship between potential of the
cadinium and thallium amalgatits and the metal. content
(at -%) in the electrolytes for the following cases:
1 - cadmium amalgam in all electrolyte containing
2 mol NH40H and I mol (NH4)2SU4; 2 - cadmitim aitialgam in
an electrolyte containing 0.5 mol NH40H and
1 mol (NH4)2SO4; 3 - thallium amalgani in an electrolyte
containing 0-5 mol NH40H and 1 mol (NHij)2SO4. It will be
seen that increasing concentration of aininonia in the
electrolyte, the potential of the cadmium atrialgam is
shifted towards the more positive values. Fig -
J shows
the polarization curves of anodic decomposition of:
1 - an amalgam containing 7 at-Olo thaiiium in all
electrolyte containing 0.5 mol N1140H, 1 niol (NH4)2SO4
and 0.01 mol T12SO4; 2 - ill amalgam containing
Card 6/10 5 at-%O cadmium in an electrolyte containiri6 0.5 mol N1140H,

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Production of High Purity Metallic Thalliui,,i b) the Amaigamat3-on
Method
I mol (NH4)2SO4, and 0-01 mol CdS04; 3 - an ari-lalvl-am
containing 5 at-% cadmium in an electrolyte containing
2 mol NH4011, 1 mol (NH4)2504, and 0.01 mol C(ISOt,. These
curves show that dissolution of' cadmium takes place ii;aiiily
in the initial stages of the process; in the electrol-;te
containing 2 mol NH40H, the polarization curve of tile
anodic decomposition of the cadmium amalnam~ is shiftf-Cl
towards the more negative values of' the potential.
Fig 4 shows the polarization ciirves of catliodic
deposition for the following cases: I - thallium on
mercury from an electrolyte containiii- 0.5 mol NH
1~ 40H'
1 mol (NH4)2SO4, and 0.1 mol T12SO4; thallium on
amalgam containing 7 at-c% thallium from an electrolyte of
the same composition; 3 - thallium oit amalgam containing
4o at-% thallium from the same electro.Jyte; 4 - cadmium
on amalgam containing 40 at-,~ thallium from an
electrolyte containing 0.5 mol N"40H, 1. mol (Ni'14)"S04,
and ().I mol CdSO4; 5 - cadmium on mercury from an
electrolyte containing 2 mol N1140H, I mol (N.'114)OS041 and
0.1 mol CdS04; 6 - cadmium on amalgam contaiiji~ig
Card 7/10 40 at-5i thallium from the same electrolyte. It will be

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Production of High Purity Metallic Thallium by the Amalgamation
Method
seen that in the case of the electrolyte containing
0.5 mol NH40H, the shift of the cadmium potential in-
relation to thallium is not sufficiently large; the
current density permissible in this electrolyte (stirred
at the rate of 60 rev/min) decreased from 1.2 to 0.5 amp/dm2
as the thallium concentration in the amalgam increased;
when an electrolyte containing 2 mol NH40H is used, the
shift of the potential is larger, which makes it possible
to use higher current density (1.2 amp/dm2). The
diluted thallium amalgam was concentrated by
electrolysis in which mercury cathode and ammonia-sulphate
electrolyte (0.5 mol NH4011, 1 mol (NH4)2SO4) were used,
the resultant amalgam contained 32,850' thallium,
5.6% cadmium and other impurities, -the thallium content
in the electrolyte being 0.27 g/l. The results of the
potential measurements carried out during this operation
are given in Table 5 under the follo%ving headings:
quantity of electricity, amp-hr; cathode and anode
potentials (v) relative to normal hydrogen electrode,
Card 8/10 The impurities were removed from the concentrated amalgam

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Production of High Purity Metallic Thallium by the Amalgamation
Iq9thod
by anodic polarization in an electrolyte consisting of
0.1 mol trilon B itt 1-0 N solution of Nts.OH, ext the current
density of 0.5 amp/dm2. The bulk of the impurities was
removed at room temperature until thallium ions appeared
in the electrolyte; the process was then continued for
3 to 4 hr at 60 to 70*C, the eLectrolyte being stirred at
the rate of 200 rev/min; the quantity of' thallium passing
into the solution during this operation amounted to 10 to
20 g/1. The purified amalgam was then subjected to anodic
dissolution carried out under the following conditionsi
cathode - platinum; electrolyte - 40 to 70 g/l TlC1041
6o to 120 g/l NaC1049 1% N2H4.H2SO4I 0.04 to 0.1% sodium
salt of carboxyniethyl-cellulose; pil equal 2 - 3; speed
of stirrer - 60 rev/min. The most dense- delosits were 2
obtained at the cathode current density of 0.3 to 0.6 ampldm
To reduce the quantity of inercury in the cathodic deposit,
hydroxylamine was added to the electrolyte to reduce the
dissolved oxygen which, by oxidizing mercury, promotes its
Card 9/10 transfer into the electrolyte. The process was carried

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Production of High Purity Metallic Thallium by tile Amalgamation
Method
till the thallium content ill tile i1111,11gam Was Ic'.).
80-3 g of metallic thallium (equivalent to 95.50,0' yield)
was obtained in this mariner. Jhe results of spectra-
graphic analysis (