SCIENTIFIC ABSTRACT BONDAR, I. A. - BONDAR, L. N.

• Document Type: CREST
• Collection: Scientific Abstracts
• Document Number (FOIA) /ESDN (CREST): CIA-RDP86-00513R000206210016-3
• Release Decision: RIF
• Original Classification: S
• Document Page Count: 100
• Document Creation Date: November 2, 2016
• Document Release Date: June 9, 2000
• Sequence Number: 16
• Publication Date: December 31, 1967
• Content Type: SCIENCEAB

AUTHOR: Bondarl , I. A.. RE.,vievier
T I TLE :

Investigation of the Decompoain- Influence Exerted by Fluo-

rine-ContaininC Blast-Purnace Slags Upon Refractory 11--terials

(Issled.ovaniye raz 'lye dayushche tro deystviya
ftorsoderzhuslichikh

domennyich shlakov na ogneupory)
ZMIODICAL;
Ogneupory, 1958, IIr 1, PP. 44 - 45 (USSR)
ci
.`-'_1~3TRACT.
These investigationa are performed in the
Institute for _~IetallurEy

Lind Cerawics AN China under the
direction of Doctor Yar , Dun-sYij.

These wor!~_s developed in
connection with the necessity of the melt-

in,3 of the iron-ores
Baotou which contain considerable quantities

of calcium-fluorine.
When tl~ese ores are molten, fluorine goes in-

to the sla- and
destroys the refractory furnace-linin-,. The results

Of these
invcstiGations were by the authors 3iven in an article

published
in the nevi Chinese periodical "Silicates" ("Shi Suan-yen")

The
influence exerted by fluorines upon fire-clay-, hij,.ly alu-

Miniferous (65 and 00 ,fo Al 0 ) and carbon-containing bric-l:s,
was

investigated in tho 11 oraio~*y. The speed of decomposition of
the

bricks was investiGated in dependence on the mocilif cation"..
1.) of
Card 1/3
te.Tiperature in the interval of from 1350 to
1550OC; 2.) the siag,

131-1-12/1,17
-/--Investigation of the Decomposinj Influence
Excrted by Fluorine-ContainirU Slags Upon Refractory Materials
basicity of from 1,0 to 2,51 3.) the fluorine content in the
slags
(f rom 0 to 10 11~a) and of aluminum oxide (f ron 15 to 30 - 18
kind s
P
of sla,-~ obtained in a synthetical way from SiO,, Al 0 CaO, CaF
2 2
and. alkalies were examined. The mixtures were 4olten a hich-
4!requency furnace and quenched in water. The investigations were
carried out according to 2 imethods: the dynamical and the
statical
one which are described and explained in detail. It -was shown
th~_--t
the rate of destructionpfthe refractoi7 materials increased with
increasing slag-basicity, fluorine-content and tc:.iperature. The
slag resistance of highly aluminiferous bricks is higher than
that
of fire-clay brick-s. The destruction of carbon-containinr brichs
by slaigs is insignificant. The problem of~the destruction of the
furnace-linin,-,s bv fluovine-continin1l, Olags is conjidered
compli-
cated and important. Their investigation may be facilitated by
the
thorough examination of the equilibriums in the r.-ailticomponent
systems, ospocially in the 4-component system CaO - Al?O -sio -
~t2
~11.~ !I!, r
-CaF 2* Such exaiziinutiono are made in the Institute for ry
of Silicates AN USSR (reference). There is 1 Chinese reference.
Card 2/3

131-1-12/14
Investigation of the Decomposing Influence
Exerted by Fluorine-Containing Slags Upon Refractory Materials
ASSOCIATION: Institute for Metallurgy and Ceramics AN China
(Institut metallurgii i keramiki All Kitaya)
AVAILABLE: Library of Con-ress
1. Metallurgy 2. Refractory materials 3. Fluorinei-Effects
Card 3/3

AUTHORSt 'Bondarl I A Sazonova, M. V. 30-58-4-14/44
TITLE: At the Institutes of the German Academy of Sciences
in Berlin
(DDR) (V institutakh Germanskoy Akademii nauk v Berline)GDR)
PERIODICALt Vestnik Akademii Nauk SSSR,1958, I Nr
4,PP-78-79(USSR)
ABSTRACTt In October 1957 the authors visited a number of
institutes
in Berlin (DDR). At the Institute for Inorganic Chemistry,
Director Ye. Tilo, investigations in the field of physico-
chemistry as well as of silicate technology were carried
out (various types of condensed phosphates, syntheses of
silicates and others). The tensiometric method,
viscosimetry,
X-ray- and microscopic analyses, as well as the method of
chromatography are applied. At the Institute for Applied
Silicate Research, Director is G. Frank, new kinds of re-
fractories for ash furnaces are developed on the basis of
alumina with different additions. At the Institute-for
Crystal
Chemistry, Director Boll-Dornberger, silicate structures are
investigated. At the Institute for Applied Silicate Tech-
nology of the Mining College (Freyberg) up to 70 graduates
Card 1/2 leave the school every year. The academic
institutes work in

30-58 -4-14/44
At the Institutes of the German Academy of Sciences in
Berlin (DDR)
relation with world known firms, the Ceramic Factory at
Khermsdorf ard the Shott Glass Factory, where they own ex-
perimental plants and scientific research laboratories. The
authors underline that in the mentioned institutes mainly
young specialists are working. There are 3 - 4 assistants
and technical specialists for each scientist. Also the
high quality of the apparatus produced in the mechanical
work-
shops of the institutes is pointed out.
1. Chemistry-Zast Germaq
Card 2/2

TOROPOV, N.A.; BONMRI,I*A*
Crystallization of dicalcium and tr'icalclum
having a high content of iron oxide. TSement
?58*
(Portlana cement)
(Calcium silicates)
silicates in cements
24 no.1:18-22 Ja-7e
(MIRL lit 4).

3W
AUTHORS: Toropov, N. A., Bondarl, SO-V/62-59-121-30/37
TITLE: Lanthanum Silicate 2La 203 * 3SiO2 (Silikat lantana 2La
203
3SiO2)
PERIODICAL: Izvestiya Alrademii nauk SSSR. Otdeleniye
khimicheskikh nauk,
1959, Nr 3, pp 554-555 (USSR)
ABSTRACT: This is a brief communication on the synthesis of
lanthanum
silicate 2La203 * 3SiO2 (La4Si 3~12 )which was carried out in
the investigation of the system La 0 Sio fte synthesized
2 3 - 2' m
silicate melts at 2,0200 without decomposition. Microscope and
X-ray structural analyses have shown that it is characterized
by hexagonal syngony (Figs 1,2). The compound La 4 Si3012 is
separated in form of hexagonal lamellae with white and orange
interference coloration in polarized light. The mean value of
the refraction index of the crystals, which was determined in
the section by means of the modernized microscope MIS-11, was
1.90. The pyenometric density of lanthanum silicate corresponds
to 5.31 g/cm3. As was shown by computations two 2La 203 43SiO2
card 1/2 molecules are contained in the elementary cell. The
density

Lanthanum Silicate 2La20 3 * 3SiO2 SOV/62-59-3-30/37
which was determined on the basis of X-ray data is 5-303 g/cm3
Apparently La 4Si 3012 belongs, according to its structure to
the
olivine group with separated tetrahedal anions [SiO414- and is
the lanthanum orthosilicate La 4(Sio4 )3* In this case a
replace-
ment of the six atoms of the bivalent element by four atoms of
trivalent lanthanum (6Me2+ '-0-' 4La3+) is possible. There are
3 figures? I table, and 2 references, 1 of which is Soviet.
ASSOCIATION: Institut khimii silikatov Akademii nauk SSSR
(Institute of
Silicate Chemistry of the Academy of Sciences, USSR)
SUBMITTED: July 19, 1958
Card 2/2

5(2)
s0!1/62-59-9-2/40
AUTHORS:
Toropov, N. A.,.Bondarl, 1. A.
TITLE:
Investigation of the Crystallization Processes in the

CaO-Al20 3- sio 2- system After the Addition of 104, of CaF2
PERIODICAL:
Izvestiya Akademii nauk SSSR. Otdeleniye
khimicheskikh nauk,

1959, Nr 9, pp 1520-1525 (USSR)
ABSTRACT-
The
present investigation was carried out in copperation with

the
Institute of Metallurgy and Ceramics of the Academy of

Sciences
of the Chinese People's Republic (Doctor Yang2=,-sLmg)

to study
the corroding effect of fluorine containing b!aBt-

furnace slag
on refraotories. The following authors who studied

this problem
are listed: Karandeyev (Ref 3), Ollshanskiy (Ref 6),

Yershova
(Ref 7), Lapin (Ref 8). The synthesis of the samples

was
carried out'in a vacuum furnace in an argon flow at high

temperatures. The samples were subsequently thermally treated
at

various temperatures. They were investigated with
polarization-

and electron-microscopes. The fluorine loss
suffered in prepara-

tion and thermal treatment was only 0.0.0
- 0.055. The primary

crystallization range and the melting
range were determined by
Card 1/3
the diagram. An addition of
10% CaF 2 to the ternary system

SOV162-59-9-2140
Investigation of the Crystallization Processes in the CaO-Al
203- Sio 2- system
After the Addition of 14 of CaF 2
proved to extend the melting range considerably (lowering of
the liquefaction temperature) (Fig 1). The congruent character
of the mullite melts was also confirmed. Separated drops of a
basio glass were observed in the silica glass by means of the
polarization microscope. The radii of the forming nuclei of
the
new glass were calculated according to the formula set up by
Frenkellwhich is discussed in Umanskiy's book (Ref 11). The
dependence of the length of the radius on the temperature can
be determined with this formula (Fig 4). The radii increase
continuously with the rising hardening temperature up to a
maximum when the new formation of nuclei prevents further in-
crease. The addition-of CaF 2 does not change the boundary of
the phases, but lowers liquefaction temperature and changes
the arrangement of the field boundaries of several phases.
These phases are determined. There are 7 figures and 11 ref-
erences, 7 of which are Soviet.
ASSOCIATION: Institut khimii silikatov Akademii nauk SSSR
(Institute of
Card 2/3 Silicate Chemist.*ry of the Academy of Sciences,
USSR)

'J A
AUTHORS;
TITLE:
PERIODICAL:
Toropovj N. A., Bandar-11- 1. A~
82038
S/062~60/000/02/01/012
B003/Bo66
G~~
Silicates of Rare Earths. 1st Report~ Phase Dia&ram of the
Syotem La 0 -SiO_ 4
- e -VI
Izvestiya Akademii nauk SSSR. Otdcleniye khimicheakikh nauk,
196o, No. 2, pp- 153 - 156
TEXT: The present paper deals with the binary system La
203-Sio2 . 99.9v/0/
of SiO. powder and 99.3% of La 203 were used as initial
substances for
preparing . the various mixtures. The individual samples were
studied
by means of a microscope and X-ray structural analysis, The
refractive
indices of highly refractive substances were determined by
means of an
improved MHC-11 (MIS-11) microscope. A change of the valence
of lanthanum
by heating La 203in an argon atmosphere was found to be
negligible on the
basis of changes in weight and volumetric determinations of
the LaO
contents respectively (LaO content at 18000C - 0.15 per cent
by weight, )K
Card 1/2

I!;.
AUTHORS:
Toropov, N. A. and Bondarl I
22513
S/062/61/000/004/002/008
B118/B206
TITLE: Silicates of rare earth elements. 3. Phase diagram of
the
binary system yttrium oxide - silicon dioxide
PERIODICAL: Izvestiya Akademii nauk SSSR. Otdeleniye
khimic-heakikh nauk,
no. 4, 1961, 544-550
TEXT: The purpose of the present study was the determination
of the phase
diagram of the system Y20,_aiO2' The starting materials were;
silicon
dioxide (99.9% Siod, yttrium oxide (the percentage content of
the rare
earth oxides was 99.9%, the content of yttrium oxide 99-42%,
of the oxides
of the other rare earths 0-55%, of Ca 0.02%, of Fe