REVIEW OF RF PATENTS FOR REFRACTORY INVENTIONS
Review prepared by the editorial staff of Novye Ogneupory
Translated from Novye Ogneupory, No. 6, pp. 66 – 67, June, 2010.
A CHARGE FOR PRODUCTION
OF REFRACTORY MATERIAL
G. I. Berdov, P. M. Pletnev, V. A. Lienko, V. Z. Gindulina,
M. S. Voznaya, and N. G. Feofanova
Patent RU 2353600
A new composition of the charge used for the production
of insulating refractory materials based on aluminum oxide
which may be used in the production of insulators of
metal-ceramic lamps, fuse lighters, and insulating adjustable
parts is proposed. The charge incorporates technical-grade
alumina, a sintering activator, boric acid, soluble magnesium
salt, as well as, in addition, strontium and calcium carbonate
with the following ratio between the components, wt.%:
sintering activator, 5 – 12; boric acid, 1 – 3; soluble magne-
sium salt, 1 – 2; strontium carbonate, 2 – 3; calcium carbon-
ate, 1 – 2; the remainder consisting of technical-grade alu-
mina. The sintering activator constitutes a cake of the initial
components (alumina, quartz sand, magnesium carbonate).
Addition of strontium carbonate and calcium carbonate to
the charge produces an increase in the electrical resistance
and reduces the level of dielectric losses in the ceramic, espe
cially in the temperature interval 300 – 500°C, as well as re
ducing the temperature at which the ceramic is roasted and
the temperature at which the metallized layer is sintered in
the course of producing the metal-ceramic layers.
Inventions Bulletin: Utility Models,
No. 12, 812 (2009).
A CERAMIC MIXTURE FOR REPAIR
OF THE BRICKWORK OF COKE OVENS
V. V. Dyabin, A. D. Lushnikov, and L. S. Royzen
Patent RU 2353601
IPC C04B35/14, C04B35/66
1. A ceramic mixture for the production of thermally re
sistant and mechanically durable ceramic surfacing with ho
mogeneous mineral composition for use in the repair of the
brickwork of coke ovens that includes quartz sand and sili
con. The mixture is distinguished by the fact that it addition
ally contains coke dust with the following ratios between the
components, wt.%: quartz sand, 65 – 75; silicon, 15 – 20;
and coke dust,5–15.
2. The mixture in Part 1 is distinguished by the fact that
it contains silicon and quartz sand with particle size not greater
than 1.0 mm.
3. The mixture in Part 1 is distinguished by the fact that it
contains coke dust with particle size not greater than 0.59 mm.
Bulletin, No. 12, 812 – 813 (2009).
PLASTIC REFRACTORY COMPOUND
T. N. Kononova, S. V. Dykhanovskaya, E. M. Grishpun,
and A. M. Gorokhovskii
Patent RU 2353602
IPC C04B35/66, C04B35/14
The present plastic refractory for temporary closure of
the tuyere openings of blast furnaces when replacing the air
tuyeres contains the following components, wt.%: a mixture
of novalacs [soluble phenol-formaldehyde resins] and resol
phenol resins with ethyelene glycol, 7 – 8; refractory clay,
8 – 15; surfactant (sodium alkylbenzosulfonate), 1 – 15;
plasticizing agent; 3 – 5; with the remainder consisting of
Dinas filler. The compound possesses elevated plasticity, low
shrinkage in service, and long-term functionality, and pro
vides for easy closure of the tuyere opening when replacing
the air tuyere.
Bulletin, No. 12, 813 (2009).
A REFRACTORY COMPOUND
A. G. Mustafin, U. Sh. Shayakhmetov, L. V. Yakupova,
K. A. Vasin, I. M. Valeev, R. U. Shayakmetov, Z. F. Kagirova,
and V. R. Bikbulatov
Patent RU 2354629
A refractory compound that incorporates a filler and
finely grinded components (a-Al
, pyrophyllite slate as
well as aluminum-chromium phosphate binder) was devel
oped in order to simplify the process of producing alumino
Refractories and Industrial Ceramics Vol. 51, No. 3, 2010
1083-4877/10/5103-0221 © 2010 Springer Science+Business Media, Inc.
OOO Intermet Inzhiniring, Moscow, Russia.
Subsequently we use the abbreviated name Bulletin.