IMPROVEMENT OF PERICLASE-CARBON TORCRETE-MIX
V. G. Kutalov,
V. A. Perepelitsyn,
O. Yu. Sheshukov,
V. S. Gulyakov,
A. S. Vusikhis,
D. V. Kuznetsov,
and M. A. Kostitsyn
Translated from Novye Ogneupory, No. 10, pp. 36 – 39, October, 2012.
Original article submitted May 5, 2012.
Results are provided for an experimental study of an improvement in periclase-carbon torcrete-mix slag resis
tance by a reduction in molten slag corrosiveness and modification of refractory composite microstructure.
Combination of the refractory microstructure modification obtained and slag with changed chemical composi
tion makes it possible to improve torcrete-mix properties considerably and increase its corrosion slag resis
Keywords: torcrete-mix, periclase, carbon, reducing reactions, slag resistance, carbon nanomaterial, vortex
Recently the problem of providing high quality raw ma-
terial for the refractory industry in Russia has become more
acute. Many years of experience of the activity of the Eastern
Institute of Refractories has shown that one way of emerging
from the raw material crisis is use of technogenic resources.
Leading research institutes in the time of the Soviet Union
(VIO, UNIIO, VOSTIO) carried out a series of works de-
voted to studying torcreting of heating units. It was revealed
that the main refractory component of a torcrete mix should
be material close in chemical composition to the lining being
OOO NPO Vostio-Ural has been concerned for more
than ten years with development and manufacture of
unmolded refractory materials based technogenic raw mate
rial, including torcrete-mix of different composition no
worse in service properties than analogs of overseas produc
ers. Recent work of the firm is a torcrete-mix of
periclase-carbon composition, intended for restoring the
most worn areas of steel smelting units. Substance and grain
size composition of the mix have been developed taking ac
count of intensification of sintering, molding, and develop
ment of this material ceramic structure during operation over
a wide temperature range.
Work has been carried out with the aim of improving
corrosive wear resistance of a magnesia-carbon torcrete-mix
using innovative technology, in particular modification of a
refractory mix with carbon nanomaterials with treatment in
vortex layer equipment (VLE). Under the action of VLE al-
ternating electromagnetic field ferromagnetic working bod
ies are placed in rapid eddy movement, providing uniform
charge component distribution throughout the whole material
As is well known from practice, an increase in lining life
is achieved by a combination of two groups of production
measures: creation of optimum highly stable refractories and
a reduction in corrosive activity of corrosion agents during
operation of metallurgical units. Research has been carried
out in these two areas.
REDUCTION IN CORROSIVENESS
OF CORROSION AGENTS BY CHANGING
SLAG CHEMICAL COMPOSITION WITH
INTRODUCTION OF ADJUSTMENT ADDITIONS
Mass produced torcrete-mix grade PUTMK-4 was used
in order to perform experiments. The mix chemical composi
tion is, wt.%: MgO 78.9, Al
4.5, CaO 2.2, SiO
1.4, C 10.2. Crucibles were molded from PUTMK-4,
charged with finely ground slag, and heating was carried out
Refractories and Industrial Ceramics Vol. 53, No. 5, January, 2013
1083-4877/13/05305-0326 © 2013 Springer Science+Business Media New York
Proceedings of the International Conference of Refractory Work
ers and Metallurgists (29 – 30 March, 2012, Moscow).
OOO NPO Vostio-Ural, Ekaterinburg, Russia.
Institute of Metallurgy UrO RAN, Ekaterinburg, Russia.
National Research Technological University MISiS, Moscow,