ECOLOGICAL AND PRACTICAL ASPECTS
OF THE USE OF PETROCHEMICAL WASTE IN THE PRODUCTION
OF REFRACTORY HEAT INSULATION MATERIAL
BASED ON WATER GLASS
V. Z. Abdrakhimov,
V. K. Semenychev,
I. V. Kovkov,
D. Yu. Denisov,
and V. A. Kulikov
Translated from Novye Ogneupory,No.2,pp.5–8,February 2011.
Original article submitted September 10, 2010.
It is established that petrochemical high-alumina waste may be used in the production of refractory heat insu-
lation materials based on water glass. The refractoriness of heat insulation materials is considerably increased.
Keywords: heat insulation material, petrochemical high-alumina waste, water glass, sodium chloride, refrac-
toriness, hydrated water, waterglass systems, swelling.
In Volga regions with a developed petrochemical indus-
try formation of a considerable amount of technogenic sedi-
ments may lead to serious ecological problems, since their
decomposition products contaminate soil and water basins.
Therefore development of new effective methods for utiliz-
ing technogenic sediments of the petrochemical industry is
Industries producing ceramic materials exhibit unlimited
potential for the most complete use of wastes . High-alu-
mina petrochemical wastes in composition and properties are
close to natural raw material, used for producing ceramic
materials. An important ecological problem is creation of
waste-free technology for producing materials exhibiting the
best properties for lining heating units. Effective heat insula-
tion materials make it possible to reduce the thickness and
weight of boundary structures, and reduce the consumption
of the main structural materials.
The fundamental possibility has been demonstrated in
[1, 2] of using exhausted catalyst IM-2201 in the production
of acid-resistant materials, and in [3, 4] for preparing ce-
ramic brick. This material is the waste from the oil process-
ing industry (divinyl production) and is a finely dispersed
powder of gray-green color. The chemical composition of
this technogenic raw material is characterized by a high alu-
minum oxide content (Al
content about 75%), which
gives rise to its high refractoriness .
Analysis of work in [4 – 11] has shown promising areas
in the development and improvement of technology for pre-
paring heat insulation materials based on silicate composi-
tions (water glass). This work has made it possible to reveal
potential areas in the development of improving technology
for heat insulation materials based on water glass. It has been
revealed that water glass, due to high absorption capacity and
low swelling temperature, may be used for preparing heat in-
sulation materials, and also that a raw material based on wa-
ter glass compositions makes it possible not only to use tradi-
tional starting materials, but also technogenic sediments
(production wastes) in significant quantities (more than
50 wt.% in compositions).
Use of technogenic raw materials promotes retention and
rational use of existing natural raw material resources, use of
accumulated and exhausted production waste, a reduction in
ecological pressure in a region, utilization of industrial
wastes, protection of the environment and expansion of the
raw material base for preparing heat insulation materials.
The aim of this work is preparation of refractory heat insula-
tion materials based on petrochemical waste and water glass.
In studying the composition diagram for the
O system it has been established that the con-
tent of hydrated water is reflected in the alkaline silicate
melting temperature [6, 11, 12]. With a content of 20% hy
drated water in silicate it melts at 100°C . On rapid heat
ing this hydrated silicate up to 200°C it decomposes, and the
hydrated water is rapidly converted into steam. As a result of
Refractories and Industrial Ceramics Vol. 52, No. 1, May, 2011
1083-4877/11/05201-0006 © 2011 Springer Science+Business Media, Inc.
Samara Academy of State and Municipal Administration, Sa