REINFORCEMENT OF PERICLASE-CARBON REFRACTORIES
WITH CARBON FIBERS
I. D. Kashcheev,
K. G. Zemlyanoi,
S. A. Pomortsev,
A. G. Valuev,
and Yu. A. Borisova
Translated from Novye Ogneupory, No. 6, pp. 19 – 22, June, 2016.
Original article submitted February 19, 2016.
The possibility is considered of using carbon fibers as a reinforcing element within the structure of
periclase-carbon refractories. Laboratory and industrial test results are provided.
Keywords: carbon fibers, reinforcement, periclase-carbon refractories, ultimate strength in bending, ultimate
Extensive introduction of carbon-containing (periclase-
carbon) refractories in the last fifteen years into steel smelt-
ing production has made it possible to increase by several
factors the life of the main ferrous metallurgy heating units;
converters, arc furnaces, and steel-pouring ladles [1 – 3]. An
increase in life has been achieved due to a set of unique prop-
erties of carbon-containing refractories. i.e., a combination
of high refractoriness and temperature for the start of defor-
mation under load. mechanical strength, and chemical resis-
tance. However, currently the increase in improvement of
carbon-containing refractories has stabilized for both techni-
cal and economic reasons, connected with the quality of raw
material, binder compositions, object structure design, and
the equipment used.
The main reasons for breakdown of carbon-containing
refractories are carbon component oxidation, i.e., graphite
and binder coke residue , and the low quality of refractory
filler and graphite [5, 6], which worsens mechanical proper-
ties and reduces refractory corrosion resistance. Another im-
portant factor of carbon-containing refractory breakdown re-
cently has become their inadequate thermal shock resistance
(crack resistance), one of the typical symptoms of which is
failure of a steel-pouring ladle in the form of vertical cracks
A traditional method for improving refractory object
crack and thermal shock resistance is fiber reinforcement.
The structure of a refractory fiber serves as “useful” defects
that halt crack propagation, and ion the other hand increase
Refractories and Industrial Ceramics Vol. 57, No. 3, September, 2016
1083-4877/16/05703-0288 © 2016 Springer Science+Business Media New York
Part 1 of article published in Novye Ogneupory No. 12 (2015).
FGAOU VPO Ural Federal University, Ekaterinburg, Russia.
OOO Ogneupor, Magnitogorsk, Russia.
OAO Magnitogorsk metallurgical Combine, Magnitogorsk, Russia.
Fig. 1. Typical form of steel-pouring ladle periclase-carbon refrac
tory breakage in the form of vertical cracks.