SCIENTIFIC ABSTRACT KURCHATOV, B. V. - KURCHATOVA, L. N.

• Document Type: CREST
• Collection: Scientific Abstracts
• Document Number (FOIA) /ESDN (CREST): CIA-RDP86-00513R000927620019-5
• Release Decision: RIF
• Original Classification: S
• Document Page Count: 100
• Document Creation Date: November 2, 2016
• Document Release Date: August 23, 2000
• Sequence Number: 19
• Publication Date: December 31, 1967
• Content Type: SCIENTIFIC ABSTRACT

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KURCEUT,OV, D. V.J CrHV'l'ii~jj"HG'jjFO7-A, v I,,, ri,,- -. . , -C. V, -_, -
0 -.: -R,, _ 1 &~ :_ ~rlrl nv i lo .
"The Sillpliatc Method of SeparatitiC Flutoniurn and lilept!Lniun,F, a paper
presented ~t the Atom for Peace Conference, Geneva, Switzerl-and, 1955

!,,4104
RAUAM11 FM ICA 1, INVf 5TIGATION OF THE FJIZ~19)j OF
li. V. Furch i:-

14YNCY; OF' I fjf~ Af*,~I) V q,~,
un, Till: L`;E~ OF
t F. 15-1-r, of' I'll):

Thi. .1-1. -A
Afoi 211w.1rof In YmAt ar A4,4frati.4 s4 N5.4 9-7937.

P: MV 2,

-14
---XUUHATOV*.B.V., starehiy nauobWy Botrudnik-khimik; MEMSECHIROVAg
Vol,, starsh4 naucbMy sotrudnikj CHERHYAVSKAYA# NoB.p
naucbMy sotrudnil; YAKOVIZVp Mop naucbmyy sotrudnik
(Sulfate method for isolating plutonium and neptunium] ftllfatrqi
matod vydeloniia plutoniia i neptuniia. Mcokvat 1955. 7 pe
.Mutonium) (Neptunium) (MIRA 140)

AUTHORS: Kurcharov , Me~hedov, V. Ir 007/56-35-1-7/59
-tttrt-y9HO~v.L. ~;.' Kuznetsova, !~"Ya., Borisoova,ull- I.,
Soloviyev, V. G.
TITLE: Secondary Nuclear Reactions in Bismuth and Lead During
Bombardment by Protcna of High Energy (Vtorichnyye yadernyye
reaktsii na vismute i svintse pri bombardirovke protonaT.-.i
vysokikh encrgiy)
PERIODICAL: Zhurnal eksperimentallnoy i teorotic'.1eskoy fizikiq 1958,
Vol 35, Nr 1, pp 56 - 63 (USSJR)
ABSTRACT: In the present paper experiments are described which had
already been carried out in 1951 - 1952, the results
and evaluations of which are, however, publisl~ed only
now. Bi(Z-63) and Pb(Z-62) was bombarded with protons
of energies of from 180 to 460 1,11cV, and astatine isotopes
(Z.85) were obtained, the production of which was inve,--
tigated by a radiochemical method. With the exception
of At211, which was al3o obtained from lead, -
Pb 2o8 (Ligkn)At 211 _. it wao pos;:ibl 51 to obtain all2
Card 1/3 astatine isotopes from bismuth. c(A ')= 6.10-29cm

Secondary Nuclear Reactions in Bitmuth and Lead D,jr-ing S1)V/;,6-.'5-'-7/5,9
Bombardment by Protons of High Energy
21o 29 2. ~e.-rly all
d(A ). 2.10- cm The At-isotopey found are n -
a-active. At2o3(a,K)-T - 7 min, At2o4(K):T= 25 min;
205 2o6 t2o7(,,, 9,)-,t
At (a,K):T - 25 minjAt (K):T = 2,5 h; A
2oB 2o9(, 11
:T - 2 h; At (K):T = 6,3 h; At K 95cj)':T = 5,5 h;
At 21o (K):T - 8,3 h; (For the a-activity of Po 21o T = 140 d);
At 211 ~~j%60%):T - 7,5 h The production crcss section
of At n lead was,%jl;-31cm. The authors endeavored
to explain the phenomena observed by assuminp, -them to be
theresult of a secondary reaction of the capture of
fission products (a-particlen or Li-nuclei). The production
of light astatine isotopes might be explained by the
capture of high-energy protons with a following emission
of n- -mesons and several neutrons. The cross section
for the production of a-particles with E >20 MeV from
bismuth irradiated with 480 MeV protons is determined 2
from the astatine yield as 0-25cm
amounting to 11; to 6). 1
(Perfilov and Ostroumov (Ref 11) obtained (1jr- -1-1.6) .10-25
Card 2/3 CM2.) In conclusion Professors B.11-Pontpkorvo and I.Ya.

Second.ary Nuclear Reactions in Bismuth and Le!..(] SOV/56- 35-1 --'I'A9
Bombardment by Protons of High En(-i-,,,-y
Pomeranchuk are thanked for their advice and discussions.
There are 2 figures, 4 tables, and 12 raferencez, 2 of
which are Soviet.
SUBIMITTED: February 20, 1958
Card 3/3

J~ 'OV
I . M. Cll.'ULK
"Research n Uie Content ot' Radioactive Str-r-mUtun In %he At,ml~uj~here, &-ill, Fucrd
Pruclucts, and T-uman Brines."
Soviet Scientists C,,;ncerntng the Dangers of Nuclea r -Weapon Test, p. G2P
Publishin,~ House of the Maln Adminicitration for the Utie of' Vomlc Power
Council of IMinisters USSR, Moocow 1959.

5/824/62/000/000/002/004
B183/B102
AUTHORSt Borisova, N. I., Novgorodtoeva, V. I.
Pchelin, V. A., Chistyakov, L. V., Shubko, V. M.
TITLE: The radiochemical study of Am 241 fission by neutrons of
various energies
SOURCEI Fizika deleniya, atomnykh yader. Ed. by N. A. Perfilov and
V.-P. Eysmont. Moscow, Gosatomizdat, 1962, 48 - 53
TEXTs Even-odd nuclei can be finsioned at different resonance energies
according to which of the two possible spin states is present. This
effect was observed in the neutron-induced fission of Am 241. Because of
the relatively low fis_-A'on cross section 'of Am 241 the study was made with
a filtered beam of rays, despite certain disadvantages of this as com-
pared with monochroxr.+1: neutron beame. The irradiation was 2done In the
)wT (IRT) reactor under a neatron flux of 5-1012 neutrons/cm .sec lasting
one hour without and several hours with the filter. The filters were of
aluminum-alloyed gadolinium, cadmium, rhodium, and erbium oxides. The
Card 1/2

S/824/62/000/000/002/004
The radiochomicnl study of ... B105/L002
Am 241 was extracted from plutonium, thoroughly purified and then e i ectro-
deposited upon platinum ciaka to give a thickncsB 0.13 - 0.5 mg/cm . The
fission proaucta emitted from this layer on irradiation were collected on
filter pap(--r and nubJectua to radiochemical analysis. The counting wan
made on a methane flow counter with an approximate 4A-geometry. The yield
of the different products, an referred'to the yield in Mo99, increacea with,,J/
increasing neutron energy when the yield of Ba.140 is neglected. Compara-
tive calculat.-on3 showed tnat within experimental limits of error thermal
neutrons and neutrons of' the first resonance cause the same mass yields
241
in the fission of Am . The effect is too weak to allow of estimates In
the regiona of the second and third resonances. There are 1 figure and
2 tables.
Card 2/2

S/089/62/013/006/009/027
B102/Bi86
AUTHORS: Kurchatov, B. V., Lavrenchik, V. N., Shubko, V. M.
TITLEt Radioactive tungsten in the atmosphere
PERIODICALt Atomnaya energiya# v. 13, no. 6, 1962, 576 - 560
TEM In the months following July 1958 a new activity of about 60 kev
was detected in gamma apectrograme of air samples from the western part of
the USSR. The fact that Ce141' Ce144 , Ru 103, Ru 106 , Zr95, and Nb95 were
present in the camples and contributed to this peak made it difficult to
identify. From a radiochemical analysis it was possible to obtain a
preparation whose specific activity corresponded to A-radiation of W185.
The isotope composition of the radiotungsten was determined by measuring
the halflives of P and t-active substances and the 'radiation energies.
NP 237 , which has an intense peak at 59-7 kev, was taken as reference
emitter. Thus the energy was found to be (58tl) kev and the halflife was
140 days, corresponding to W181 which goes over by radiative electron
Card 1/2

3/089/62/013/006/009/027
Radioactive tungsten... B102/B186
181 161 185
capture into Ta . The isotopes W and W are most probably produced
in (n,~n) reactions from W 162 and W 166 , having a cross section greoter than
that of (n#j,) reactions by a factor of 105, which also are poss ibl, e. If the
growth in P and S-aotivities between July and November are confronted with
the natural W isotope composition and the halflife data it can be concluded
that the atmospheric tungsten was caused by the US thermonuclear te3t
series performed on the Marshall islands during May July 1958. The geo-
graphical and seasonal fluctuations of the tungsten atmospheric pollution
%ere studied in detail. In contrast to 8r90 which remained almost constant
between July and November 1958, the W165 content increased steadily from
0.12 to 6.8 mCu/km 2 (determined in the rain-water). On W 181 a concentration
maximum was also observed in spring 1959 which is attributed to meteorolog-
ical causes. The latitude dependence of the atmospheric tungsten activity
measured in December 1958 shows an Atlantic peak between 20 and 300 n.l.
and measured in November 1959 a Pacific peak at about-400 n.1. There are
2 figures and 5 tables.
SUBMITTEDi April 16, 1962
Card 2/2

KU R(IIIIATO IV, N . VI l'i J Ll Ti : KVA
t,1 idy, f th(-, x-f,,ia c f, I (in I , f/,, ) cin c,, 1: 1 1 ~lrri I x, ci,rj sv(;Bk.
un. 2: Yfili". 20 n~).c',:17-23 ?.- 1) ~mf;,A 19: 1)
1. laboratoriya radiokf.imit Instituta
yadarnoy fiziki 1,!oiikov3kcjl,,o univaroit;A-rt. Submittfid May 29, 1965.

KURCHATOV, G.M.; GRASINO 0.1.
The Lana River atom naTIVtion Is one hundred years old.
Rech.transp. 15 no.8:1-3 Ag.'56. (MLHA 9:11)
(Lana River-Steam navigation)

XURCHATOV, ~.V,
Problems affecting the development of atomic power engineering
in the U.S.S.R. Dos. such. fiz. no.5:3-12 157
jMIRA 16:6)
(Russia-Nuclear engineering)

KURCHATOVO I.V.
Feaoibffity of thermonuclear reactions in a gall diaohar
Doo. such. fis. no.5:82-94 '57. (MIRA 16M0
(Thermonuclear reactions)

SOURCE: Atomnaya energiya, v. 17, no. 6. IU64, 463-4?4

- - I, --

'7
t 30155-66 Eup(t)/E~i lip, (0) ip
ACC NRi AP6020620 SOURCE CODE., Bli/o-o-u76-5/dii/663--/6ii7-/6i~-(
AUTHOR: Kurchatovo M.; Yanakiyev, N.
ORG;- Institute of General and Inorganic Chemistry# BAN
TITLE: Study of iron oxide reduction by solid carbon using methods for the
simultaneous observation of the kinetic and temperature curves
SOURCE: Bulgarska akademiya na naukite. Doklady, v.18.# noe3o li65., 227-230
TOPIC TAGS: chemical reduction, thermal analysiej chemical kineticso iron oxide,
carbon
'4 Although several researchers 9tudiod the
ABSTRACTO
ireduction of iron oxides by solid carbon (see, e.g., A. K. Ashin, S. T.
~Roatovtsov, Izv. vysahieh uchobnykh M., 1964, No 4, 11), The
kinetics and the'mochanism of this pr8coasNare still subject to differing
.interpretations. The majority of the approaches does not take into account
the real temperature of the reduced oomplo although the reaction procoada 0
with a considerable ondothormic offset. Consequently, the authors carried
out a simultaneous determinotion of the reduction rate by the amount and
composition of the outgoing gases, and of the thermal effects by a modified
,method of differential thormAl analysis. Results a're shown in graphic form.
This article was presented by Academician D. Ivanov on 30 October 1964- [Orig.
art. in Russianj [JPRS1
�U4 COP~l 07 / SUBM DATE: 300ct64 ORIG REF: 005 OTH REF: 001 SOV REF:
4g
4,

LAMBIEV, D.; NOURCHATOV, M. [Kurohatov, M.)
Method of studying metal oxide reduction with carbon
oxide permitting autonatio plotting of kinetic ourvea.
Doklady BAN 17 no.2sl29-132 164.
L Institute of General and Inorganic Chemistry at the
BulgPrian Academy of Sciences. Submitted by Academician
D.Ivanoff [Ivanov, D.), MAmber of the Board of Editors,
"Doklady Bolgarskoy akademii nauk".

KURGHATOV M - YANAKIYEV., 11. [Unaklev, N.)
ApFaratua for the datermination of reducing powor in iron ores and
readtivity of solid fV91. Doklady BAN 15 no.8:833-636 162.
1, MAtitut obohahey i neorganicheakay khimii Bolgarakoy Akademii
nauk. Predstavleno akad. D. Ivanovym, c)aon flodaktBionnoy kollegil,
ft.Doklady Bolgarskoy akademii r,.tuk".
i .I

IAMBIYEV, D. [Lambiev, D.Is KURCUTOV --- 14.
A method, of studying the rata of metallic oxide reduction
by carbon. Doklady BAN 16 no.21l,65-168 163.
1. Institut po obshchey i noorganikheakoy khimii Balgarskoy
Akademii nauk, Predstavleno akad. D. Ivanovym.

TOTSEVY 1). ; KURCIIATOVO Id.
Tests for the obtai=ent of ferrocoke on the basis of domestic
raw materials in Bulgaria. Izv Inst khim BAN no.8:123-146 161.

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of t1-,:,rafc mm.;-L~riti t- ~-.-vl -i1 irlivi~!l.-Oly Ille
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transfol-raing fmIltAtrA at the F.-Ime tiiTic t") tille gil, form.
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to otifaill ~VlqumzlO, irl -tivem"'It faim For filtra-
L" j4fK,VAUrS' 4, I)pi!l V, tht
1-11viduAl illt--ffli- Advxit~%u, fre
that the a0i Pr jawlysit. 12,4,le of cornim , pvcq
tfetlt-v acretancitt lif-twn-si !uplicawi, tfutt d-tvi -,f Loh
alk,ili mctfli mn1 11 h (III 11FIT! lr~leJMJ ~3111~&. arld
that vzc qf;-;~ncc 0 imelgil prrvilt-, Irvir'. acturate
liful vallying Tit (if jytn' Cmnpf~tr
a' ill (I Avoi,fCK1. nd Out, LOky plifli. iq
Al rli Fe IIY4r4'xb!f,-: (Ilm lilt to mfiilll Im. tivej(1~11. Ily K.'a
tileflindi, the mun lif t
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e~c. ivhen 11i N jim,,ent. Wlicn. the vvx,!Atuc-j are no, I-A-
lawre, eareNtly, and Ca j3 fom-nd, TIM01 Is rate,
trmileryu,; rr-vjlts will th~= be obtaincd. Queful wc-k and
lgire.rtmc~n' am, t" in-ure S"Mlate deln. of
The 11 d0n. is lang attit involycill. [in-
6 ti-ada. chly'vm F. 1101-Oway -,

C/4
A isow clastbed few the delarrminatists of the inorganic
a6 ,urchAtov. Jm-
d
) ftUV In coell $A4 wke, hf. 8, V
ilmairt Vote. SOJIa. parmui PAYI.-W., 4Y. VVV2. 21.1p :11
(IOWI947)(Gemun tmfnttwy). %4nlpk-4 L4 Asti ? 15 5 1
were placed Ill a 2W-cc. Wlr~nmryer flask, then mixed with
"(I rc- of 3% 111A and heated a few min. with a l,'w flanw.
coticif. 11C1 (I cc.) was then added to the Intitt. and firAl -
ills continued a IfW Min, Thirtalst, W24 I'Lf. with ?Olcv.
1110) and 0 1. (NII.)ICO, added. The IIJA it'll thril
mytred with IL watch JUSS of pfirferAdy "ills 'a XIAI~
%lOpj*I` tlrSW" UUt t0 OIL MpillArY. The fL,,k -a4 alcAt
hrattd until the (.Nlfs)jC(h was cnniplefrly d-nni-I.
The ctintents of the ftask were dild. with Pit? m. I.liling
11,0, filtered, " wasbed. The filtrate which contaittrof
was neUtrAlinA with IICL demnpd. with 4-5
CC. concil. 1110. and pMd. at boiling temp. with MCC. [()~;
1140j; II&SO, was obtalined as t This mcth(A can
fie used withimut %Ilecial app. N C Flopui InIcHing (W da"W".
01!% savi are evalwif. Hard roal, lignite, coke, and
in ills. of mh frm various jourr" we" allalytild by this
method. Result,, were in good astleement ibith pritviowt
mtthmis. Sampirs of ash to which the method was up-
plied ranged frmu ki~%, than 1/, to oil, S content. Cf.
(tillowing al"tr. Nellie 13. Payne

A rapid m*tW for the determination of Inorganic (sab)
sulfur in coal and take. M. S. KurehAtov- All-sawift
Nair. Sr~ia, FaemW
sumnury). - comples rit ath (from n.2 or)
0.5, a.) ham coal to coke war well uuml With I a. Zn
Powder and I S. I(Ach. then PLACT11 in a Ibutttl'Aill crucittle,
lbel"ist. was Covered with Zn Pood'r. the crudble myrft'j,
then hetaled M-23 min. over a Iluu*erl Writer. TbV
clurilAt was cooled, then pLiced In a "ille treck f1A%k WIll-Or
the vintents of the crucible were dermn;ml. 'filth lict ill is
allesm of purr Cfh~ The Gilt topnig. the ttutillte. 41-,
votitalned 11.0 to a levv; alnyvr the bright -it The rrm PAr.
The 11"Is was heated thus drivluf off lips which wit -tJ-
is' of cd(clhc(h), and CII.OhIl.
The UMIGC009 soln. was (Itrated with 1. Tinte re-
11111til (Of AllAYSIS wall 1.5 be%. MAX. difference Iletween
uplicats analyus was V~,, This nicibrid war "lit'lirrhir
to itih CMIS. low Or high 8 CVMIV"t dild WAG .11AIC 14#1
hAFd Mail lignite, or vike wit h% im fc;y varying malm. Cf.
piervilng atmir. Nellie M. PAY11C

roroo 00 a' a *to 0
T
4 3
1
'A m
.
'
1
A-K
r
9
0
000P
s ut
.
-t
10CISM 6-0
94

009 4628. '~;MWIL;AL INIMT!'L710N UP OOAL OF KAMT~A 4ur6iritvv, 100
'
040 (Annuarie Univervitarle Sofia, FamAlte ihyts. h5t.,
1947l ~06
fe Vol. 43, 243-289; sbatr. In chem &bstr., Vol. 4-1
'
100
*
OR ,
I
.r WA he
9411). he cual beds are fairly homogerou$
t .00
00 coal line a high water and a8h contunt, ani the p3h hav a low 600
60.3 ]bare is not much dist1ll&tc formed, -nJ It contains
0*0 few ~benols. The coal can be fcrmed Into bril-utittes, but they 14 0
*04 eaally break up. 'the best use for It is ;r-~b,bl,,, for doe
irduatrial heuting. x0e.
age
Coe
see
J
Ito 0
50o

09TALWO'CAL LITI&AU41 CLAWFICATION NO*
Noe

Et U U &W so is "
,
~ "
t-tt-
; ~
&
t It
st is I! a
I
df N
4 tra A i N
0
0 0 0 0 0 0 6

Oil amlif ?*I
V *-A -.t- L.. AA U
00 1,A1-7 -1
A S 01115
00 A
a
Mover data on caking propeeartles 6( C-41 of that Nathan do -
passits. .141 H,_K3tvhAjov. Ammawort mover. N,04, fa, 010

the Milkan derf-its aahowed ractepri
so ri I
s 4anoevislurefI23-1.41" &A 207-0 HUI'. S0A2-4.T1';.
1
%f
i
i'
, -33
And VOuuk matter 11.
i
AfVlAjapftArA1Ia-C
so
00 I ~ A-h area$ ro,lAlkle-at *rtr
let the west (10d.a4h, he,
f
I
~
1.
,
MIlol
blih Witites 111.1 0. MY

00 :i inCtAlliC IlUt(091. Crucitallor tetts show III Poroui olke.-

00 X"r the center of the tlepWt there are 2 typei -f coal:
.,nr with low vokfiler crentprit, whk-b "Act wrahly or not At
00 all Intinroa NA,laroefula, Rulauvrit 11. raf dl.) umt thAt ad the
tyj~ tif the flutura tninoo. mimaoi with low vval.tjfl,% beat SiviiiC I
J laryfacrity fusing deow c,,ir, Uhar twitt par.
00 title$ of the (jejecasit (Tvielffit!L'i .1till KA1111f) givr I-0,11% oil

go v.irying Ash atul 3 and INAing properlies. The ch.4roc.
feriater "fire of YoUtiles it 211%. At Rnrovrti three ii 4
j 23-4% arnialife unAlrar And f-arannat -a
,-it h4v~n
A
'"
u
u
tjutntily Wd 4 It* tit. The t4ulao ty-nn C v. SWA-i,
fau'rit'It hm V.,641.1f "Alfile, n.1we
Cv. 011III.S. awl
b
C
not ifilffrr"t Apparairath-r of A-lawy tw-.%af fulf often %ifnif it
PlementAry emn ti. In the ttifirra lktrt (mineii tlru,,iyk,
j
Kam-bulklo faa
.) the -AAOI~ MAIII14'r it A
-AlShtly rsimi, fuee-1 deneor lwxJ 1. forneral an 44"y, bear
1h, 14 notefortl It theater A.T. PlIkof
t A (LAWFKai ?Keg
A J.4m.
;);76 ;i. C
T,,7 "Nal
va
V., to H or n if X KW A I
"too
so
-* 0
00
ave o
its*
goo
goo
*less
VOO
It*
) tag's
,
0 O~O 0 0 00000000 00 0 6 0 o o *1* 0 0 * 00000004000*00
6-0-0-0 0 0 0 0 0 0 0 0 0 0 1* 0 0 0
so 0

A L- a i A-L x V a -01 .4 T 11 4
It .1.1 11. -Viol
O*A 1W, PIPM
000 164.M61 ..Q of-Plif"s "Co.
CO"Ih(; OF BALKAN COAL3 'fITH ADDITION OF CURCO.-'L AND PRIQUtTTING
to tIFORE COKING. Xurqh4
*0 Me S. Ann. Univeralte Sofia, Facults Sol.,
194H-1949, vol. 46, Livre 2, 1-27; abstr. in chin. abstr, 1951, vol. 45,
847). The pr4upose of this study Is to determine the influence of added
charcoal &~rlng tho coking of Balkon cools upon the amount of volatile
0*4 materials in the bri uottes obsined and upon their qualityo Results of
laboratory experiments with s#Aplas of 8 kinds of coals show that additim
o0z
of charcoal does not change the physical or chemiox 1 pronerlies but improves
*04 the mechanical properties of tk,e coke. Also pro-Lriquett ing and addition
**a
of charcoal shorten the time of the oolcing process and decrease the amount of
tar in the volatile materials.
gem
U!
flail
SS L A_ !!!AL~UOCKAL U112AUAt CLAISWK01010
a U 1A &V 00
0 1 0 0 0 0 0 0
0
If ItI
0 0 0 0 0, *0
o -is,
0 0 0 0
-
o 0 is 0 0 0 0 is 0 4 a 1,0
oiso
a a 0 a 0 0 0 0 0 0 6 0 a a 6 0 40
.00
.00
Is*
.00
000
=00
4*0
aeo
too
nos

i - - - - ~' ~ ~ - - --if- - - - - -- - -- - - I
, , Z - lll~ -

T,
~A
M. Pre(iiictioi of pig iron and oteel iri last, fmnacen.
!,f,,d,ictirri o" iro,
,I nX-j(jo vid iron orn wi tJI rntLl ra,~~n- ii :dnr i,-,ial
c o n di t i o ns .In Pussian. p. 3 1 11fil. 3,
a I
I zv* I I.A. softla) Oldral-ia
SOURCE; East European Accessions List (FEAL) Vol. 6, WO. 4--April 1957

--4w!r rvr~x ~~,l
-0 0~
qT,
Nl~

Obtaining cLUjrca and steel without 1,b6 uja of a blast fur-
~Ace. 1U. lrew--Tats an the reductlo~rocesj of Iron oxides
andiron area with solldcarV-7~" unharov. Bulzar--
Akad. Awk, Ir,,ert Xhim. Inill 'I, 144-Zi- klum IR ussian
11nd-Or'na"gn vu-i-uli-Zjcs),~ cf. CA. 51, 4 .-It t C rolit
to be reduted Is prtpd. will% excess of fuel and reduction car:
ried out under 1200*, the product Is powritry. With de-
crease of solid C in the reaction mixt. It Is possiblo to obtain
" ""' evn completely melted metal. The re-
'in "~ty
"ge I'-el de'si the temp. of reduction. Fuels of
-o- ivity. such as coke and graphite,
Ti-I
redE F. oxidt!. and ores at comparatively high terrivis.
The wActk)n, however, Is fast-, crinditmisare unfavorable or
tile tridotherrnk reduction of C(It,, the CO/CO,, ratio Is
3maller; consequeritly, the product of reduction is in a m,)r,-
incited condition: re ores such as maguctitc and lictruitite,
disc tn their phys. characteristics, are wore difficultly re-
duced hy COj. The time necc~sary to reach axkii temp.
will influence the phys. appe-artince of the final product. Tile
1e.111 611011, kinle 6 tilt MOM Of th~! Mille-1 Will 6C 1"OdlICNI at
the higher temp. and tile vioro incited tile filial prrAltlct will
appear. Preliminary briquetting mitt] fues It. action during
the reaction hilluencvs tilt tite favorably und leads to mote-
ritelted producL-j. M Mvk,- Bcrtdjkk-.-
Distr: 4E2c

~% 1-1 "Uv, I!.
7roblen of produe-Im., steel and cast-iror; outsidle blaft fumacn; new (inte, on
ne(:~,-.anisn of mduction process of iron acidity an~ i-ron ore -.-rith 11,ard carbon. 'in
.,.ussian.
P. 149 CIzveo~-U.-O Vol. 4, 1-1;56. .'ofiii,
Ilu -
0: ::onthly Index of East ' ropean Accessions D], Vol. 7, -0- 1, Jan.

-Lan for new univcrsal r,,ctallur-ic furri-ac(. for -rod,l,ctim of sst-,-~2_ nrj~ll cast Iron.
7n Ewl:;cLan.
P. Od (-rzv(--:Aiia)
~30: "onthly Index 6-f Zast 7uropean %cccocions (:'7A 7 ) l." "o, ::0. 1, Jan. 1953

Frobl,~-jt in 1.1in --!xluCLi,,n )I* ill -!-:,ri i,l,fi f~Ul ~:!'J- Of 1~1' f3t
Vol. 195~"
IEZI:
Vol.

KIT", ( ; i I A ~l ( l 7 , !.! , j ! , ;. 14 1 Fl-v, 1).
f I e w rl it f, a o n t. h n U n o t, I c a it n t f m f t c I i n n t w m o t' i i I r, -a - t e rp, r- m r it t I 11, (1
r,(Aucticn ol' cupric oxidon by hydrogen. Doklndy HAII 17 no.
70~21?-63,! 16".
1. Insmitate of Genoral vIi [norgRnic Chemintry, bulgarinn
Arridomy of lclunces, Pr~dntFkvlonf) nkfid, d, lvan(vym.

TOM

MEN&-
Frg'3h
-Tit.
PA

BULGARIk Chemical Technology, Chemical Products and H
Their Application, Part 2. - .~'lements, Gx-
ides, 111ineral Acids, Bases, Salts. - Other
Elements, Oxides, Mineral ncids, Bases, Saltq.
Abs Jour: R(~f Zhur-Khimiya, No 18, 1958, 61505.
Author : _~ 7 -
Inst : i~cademy of Sciences of Bulgaria.
Title : Raduction of Iron ', Oxidos and Iron Ores ',1ith
3olid Carbon of Various Description on Con-
dition That Heating Is Carried out Stepwise. III.
Grig Pub: Dokl. Bolg. AN, 1956, 9, No 4, 41 - 44.
Jibstrant: Stepwise heating of a mixture of Fe oxide .,tith
solid reducing agents (carbon black, charcoal,
coke, graphite) was carried out; -uhe separating
gases were sucked off and analyzed. The gas
separation discontinued at a certain tempera-
Card 1/3
BULGikRIA Chemical Technology, Chemical roducts and H
Their Application, Part 2. - MefZent3, OX-
ides, Mineral Acid3, Bases, Salts. - Other
Elements, Oxides, 111ineral iicids, Bases, Salts.
Abs Jour: Ref Zhur-Khiraiya, No 16, 1956, 61505.
Abstract: ture charanteristic of the given reducing agent
and oxide, and it resumod only at a somewhat
higher temperature. That process course and
the ratio GO to c0 at every prccess step al-
low to assume the following reduction mechanism:
at some temperature depending on the structure
cf the reducing agent, an activated adsorption
of 02 from the gaseous phase starts and accel-
erates the dissociation of the oxide. The dis-
sociation rate is determined by the structural
peculiarities of the reduc`.ng Agent and the
Card 2/3 18

KURCHATOVP M.
"Concerning the possibility of producing sponge iron in periodically operatad
coketype compartment kilns.',
P-321 (Izvestiia, Vol. 5, 1957, Sofiia, Bulgaria)
Monthly Index of East European Accessions (EEAI) LCP Vol. 7, No. 8., August 1958

'... - ! ~w ~
J, -,. . - I .. I- ~

Urt!RN-

BULG.-,RIA / Physical Choziistry* Kinetics. Cozabust- B-0
ion. Explosions. Topochouistry. Catalysis.
A',bs Jour! Rof Zhur-Khimiya, No 7, 1959, 22571.
Author : Kurchatov, M.
Inst :~,.cma ~~es of Bulgaria.
Title :Concerning the Reduction of Sotau 1,10tal Oxides
With Solid Carbon and The Laportance of the Re-
action of Oxide Dissociation in This Process.
Orig Pub: Dokl. Bolg. '14, 1957, 10, No 5, 367-370.
'bstr
-act; The author shows that oxides, which do not prao-
tically dissociate at the toraporature of roduc-
tion, blay pass through the stage of prolisainary
dissociation, when reduced with solid carbon.
The dissociation may take place in consequence
of local warming up of the surface of tip oxide
by the exothermal reduction (for oxa~iplo, of
Card 1/2

Rn;V

Ali i UOR i URCHATOV,Dr.M.S., Chemical Institute of tt;o PA - 2391
_2uTg_a`rFa_n Acald-emy of science. (Khimicheskiy institut Bolgareakoy
Akademii Nauk)
TITLEs Ferro-Coke and Ore-Coal Briquettes. (Zhelezo-koks i rudougollnyye
brikety, Russian)
PERIODICALi Stall, 1957, Vol 17., Nr 2, pp 103 - 105 (U R.)
Revi-S-S; 5
Received, 5 / 1957 ewe / 1957
ABSTRACT: The present work was carried out because, until now, there in
still no sufficiently well-founded judgement of the-usefulness
of the produotion and use of ferro-ooke. The production of ferro-
coke first of all served the purpose of binding the dustlike ore
with coke in order thus to obtain a product which, according to
its mechanic properties, is suitable for use ir. a blast furnace.
Erlier experiments carried out by the author showed that ferro-
coke of some sorts of coal is better for its mechanic properties
than coke which was produced of the same coal without addition of
ore. There are no difficulties in obtaining solid ferro-coke from
good coke-coals. Also the reaction of ferro-coke by reduction in
the blast furnace is decisive for its usefulness. Also after re-
duotion it must have the required strength. Experiments showed
that the production of ferro-coke in coke furnaces and its use
in blast furnaces are not useful. Much more effective and more
Card 1/2 useful are ore-coal briquettes produced in such a manner that the

Ferro-Coke and Ore-Coal Briquettea.
A -2391
quantitiy of fuel in the basic mixture is not greater than that
necessary for the reduction of the ore. The beat fuels for
briquettes are coke and well coking coals. With such briquettes
the temperature at the beginning of the reduction is noticeably
closer to melting point so that the product goes over Into liquid
condition already in the case of low heat development and the
processes of ore reduction and of smelting the product are ap-
proximated to each other. (1 table, 2 illustrations and 6 citations
from publications in Slav languages).
A55OCIATIONi Not given
PRESENTED BYs
SUBMITTEDs
LVAILLBLEt Library of Congress.
Card 2/2

AUTHOR: rohatov, U.S.
TITLE: A Method of Detecting the Presence of Sulphur in Various Materials
by Means of Regeneration by Zino Vapors (Metod opredeleniya ser7 v
raslichnykh materialakh vometanovleniyem parami tainka)
PERIODICAL: Zavodakaya Laboratoriya, 1957, Vol. 23, Nr I I , pp. 1294-1296 (USSR)
ABSTRACTi The method is based on the following experimentt The sulphur oompo-
nents contained in the solution are transformed into sulphur sul-
phaLtes. The sulphates are then regenerated into sulphides under the
action of zinc vapors; furthermore, the aulphides are decomposed by
the action of hydrochloric acid, on which occasion hydrogen sulphide
is determined iodametrioally. It was found that zinc vapors form good
regenerators in "Eshke" mixtures for the transformation of anorpnio
sulphurous compounds into the sulphides which are decomposed by acids.
Here it was found that the zinc oxide, which is formed in this process#
covers the reaction mixture with a thick layer and thus protects the
sulphidea against repeated oxidation. The use of zinc vapors there-
fore offers many possibilities of application. The experiment takes
an hour and a half. Investigations can be carried out on larger as
Oard 1/2 well as on semi-miorodoaes. The suggested method can be well applied

32-ii-7/6o
A Method of Detecting the Presence of Sulphur in Various Materials by Means of
-Regeneration by Zinc Vapors
in thie cue of various sulphurous anorganio substanoes such an asho
slag# oreat minereas, and rook, an well an for the purpose of deter-
mining the sulphur content in various steels arA other alloys. 7here
follows a description of such an analysis. In the same manner as do-
scribed above the sulphur content in hard fuels can be determined.
Also in this ease it Is necessary first to transform all sulphur com-
ponents in the substance into sulphides. In the case of the content
of theophene and its homologues previous heating of the substances
to be investigated, which is to last until the volatile component is
finally removed, is reoo=anded. There are I figure, 2 tables, and
8 references, 6 of which are Slavio.
ASSOCIATION: Chemical Institute of the Bulgarian Aa.8c.(Khimichdsk:Ly Institut
Bolgarskoy Akademii nauk)
AVAILDLE- Library of Congress
Card 2/2

1W
,
VR,lu,
,
al the by so d ca~b.on. .13
,
,
.
'
Ku" 41'
The redn. of pure Cut) 0 CU,() With goh~
t sa