NEW TECHNOLOGY FOR REFRACTORY MATERIAL PREPARATION
S. Sh. Kazhikenova
Translated from Novye Ogneupory, No. 3, pp. 119 – 122, March, 2014.
Original article submitted February 12, 2013.
Use of cheap local raw material resources (barite and witherite concentrates of the Karagailinsk deposit,
Arkalyk clay, chromite-magnesite scrap objects, copper production dump slag, chromite ore, etc.) makes it
possible to create new import-substitution refractory materials. Non-traditional technology is created for ob
taining moldable import-substitution refractory materials from cheap local raw material resources based on
occurrence of self-propagating high-temperature synthesis (SHS). A number of new compositions are pro
posed for self-sintering refractory mixes, whose objects have good technical and economic indices.
Keywords: local mineral raw material, self-propagating high-temperature synthesis (SHS), SHS-technology,
self-sintering refractory mix.
Over the extent of all human history creation of new ma-
terials and various objects and structures based upon them
has always determined a breakthrough in different fields of
science and technology, and as a rule comprised a whole era
in the world of technology. The scientific base, created by
work of Soviet scientists of the Academy of Sciences in the
period 1970 – 1980 made it possible to discover new phenom-
ena in the field of condensed system combustion physics.
The era of self-propagating high-temperature synthesis
(SHS) started from the instant of discovery by professor A.
G. Merzhanov of a new class of heterogeneous combustion
processes in a condensed phase, proceeding at a phase
boundary, and what is particularly important, without partici
pation of gaseous oxygen [1, 2].
Self-propagating high-temperature synthesis is a promis
ing resource saving and highly productive method for pre
paring refractory inorganic compounds, hard alloys, and re
fractory materials. It is used in order to prepare refractory in
organic ingots, objects, and coatings, using as raw material
mixtures of metal oxides with metal reducing agents and
non-metals. A wide range of cast carbides and other hard al
loys based on them, a number of borides, and also some sili
cides and intermetallics have been prepared by this method.
Materials have been obtained mainly from chemically pure
reagents, whose use increases the cost of synthesized materi
als. In view of this it is necessary to carry out research aimed
at using available raw material.
Intensification of production processes and innovative
ways of developing different branches of industry impose
even more stringent requirements for refractory objects used
for lining high-temperature units. On the basis of results of
previous studies, concerning development of scientific and
theoretical bases of refractory material controlled synthesis
and establishment of physicochemical phase equilibria, a
number of new compositions have been proposed for self-
sintering refractory mixes, whose objects have good techni
cal and economic indices. Non-traditional technology has
been created for preparing moldable refractories, based on
occurrence of a process in a SHS regime [3 – 6].
On the whole creation of technology for preparing re
fractory materials from local mineral raw material by
SH-technology is a contribution of science to solving the
task of adding currency resources to the country as a result of
import substitution of high-tech products. Use of cheap local
raw material resources (barite and witherite concentrates of
the Karagailinsk deposit, Arkalyk clay, chromite-magnesite
object scrap, copper production dump slag, chromite ore,
etc.), makes it possible to create new import-substitution re
fractory materials, whose testing under laboratory and
semi-industrial conditions points to an increase in service life
of Waelz kiln linings on average by 60%. An advantage of
the compositions developed is use of production waste, for
example copper production dump slag not of ecological
value and cheap local natural raw material, which markedly
Refractories and Industrial Ceramics Vol. 55, No. 2, July, 2014
1083-4877/14/05502-0108 © 2014 Springer Science+Business Media New York
E. A. Buketov Karaganda State University, Karaganda, Kazakh