ECOLOGICAL ASPECTS OF THE USE OF LIGHT ASH FRACTION
AND NONFERROUS METALLURGY WASTE IN THE PRODUCTION
OF ACID-RESISTANT BRICK
V. Z. Abdrakhimov
and E. S. Abdrakhimova
Translated from Novye Ogneupory, No. 5, pp. 41 – 44, May 2011.
Original article submitted November 27, 2010.
It is shown that in order to produce acid-resistant brick based on production waste without the use of tradi-
tional raw material the optimum content of light ash fraction is about 50%. This brick has high physico-
Keywords: acid-resistant brick, wastes, light ash fraction, argillaceous part of zircon-ilmenite ore gravitation
tailings (ZIG), regression analysis.
Acid-resistant brick is used for protecting equipment and
building structures operating under conditions of acid corro-
sive media, and in the lining of flue stacks, which serve for
discharge of gases containing corrosive substances. The
brick may be used not only in metallurgical and chemical in-
dustries, but also for the outer facing of buildings, and in fill-
ing stations. In Russia every day more than 2000 hectares of
land are set aside for the storage of waste products from min-
ing enrichment and processing units, including arable land
[1 – 3]. Recultivation and restoration of land for agricultural
use is significant far from the rate of their expropriation.
Some data for the amount of production waste accumulated
are provided in Table 1 [1 – 3].
In publications [4 – 10] the fundamental possibility has
been demonstrated of using the argillaceous part of zircon-il-
menite ore gravitation tailings (ZIG) for the production of
acid-resistant refractories. A study is made in this work of the
possibility of using a light ash fraction as a grog and flux in
the production of acid-resistant brick.
Studies have shown [11 – 13] that at the periphery of an
ash dump as a rule there is formation of a light ash fraction
(Fig. 1, zone IV ). As ash moves from zone I to zone IV the
more dense and heavy particles settle in zones I and II. The
light ash fraction relates to water in the periphery of an ash
dump, as the lightest component (see Fig. 1). Physicome
chanical properties of ash from a thermal power station in re-
lation to its place of occurrence are provided in Table 2.
Refractories and Industrial Ceramics Vol. 52, No. 3, September, 2011
1083-4877/11/05203-0231 © 2011 Springer Science+Business Media, Inc.
Samara Academy of State and Municipal management, Samara,
TABLE 1. Annual Output of Waste Products in Some Countries
for one person,
USA 628 2563 68
Japan 312 2578 829
FRG 56 933 229
Great Britain 50 909 207
France 50 909 91
Russia 2000 14,000 820
Fig. 1. Sub-division of ash dump by zones (I – IV ) in relation to ash