PRODUCTION AND EQUIPMENT
REFRACTORY PRODUCTS OF THE BKO COMPANY
FOR LINING HOT-METAL CHARGING LADLES
AND HOT-METAL-CAR LADLES
A. P. Margishvili,
A. V. Mozhzherin,
A. P. Duka,
and V. A. Musevich
Translated from Novye Ogneupory, No. 7, pp. 14 – 17, July 2011.
Original article submitted April 18, 2011.
This article describes the range of carbon-bearing products made by the Borovichi Refractories Combine to
line hot-metal charging ladles and hot-metal-car ladles. The specifications of the products are presented along
with results from their use in ladle linings.
Keywords: lining, hot-metal charging ladle, mixer, refractory concrete, mortar.
The Borovichi Refractories Combine (BKO) makes
refractories for lining steel-pouring ladles, converters, la-
dle-furnaces used to treat steel outside the steelmaking fur-
nace, and other equipment used in steel production. The
company produced more than 28,000 tons of carbon-bearing
refractory products in 2010, which represents a 65% increase
in its output from 2009.
In 2004, the technical services at the BKO were faced
with a challenge — develop and test a new type of car
bon-bearing refractory based on the promising system
–SiC–C and new refractory concretes based on the sys
–SiC to line equipment used to treat and transport
pig iron — “topedo-type” mixers and hot-metal charging la
dles. The existing foreign- and Russian-made Al
C-based refractories were not satisfying the high-perfor
mance requirements that were then in place - requirements
such as good resistance to spalling and the effects of aggres
sive slag melts.
International practice in the use of mixers and hot-metal
charging ladles shows that to make efficient use of their lin
ings and make steelmaking operations highly profitable it is
necessary to balance out the lining of different zones of the
mixer and ladle with allowance for the specific service con
ditions and loads in each section. Thus, the first problem that
was addressed was to arrange for production of the following
types of material:
1. Refractory products for the working layer of the lin-
ing in the slag zone.
2. Refractory products for the working layer of the lin-
ing in the zone occupied by the pig-iron bath.
3. Refractory materials for the working layer of the lin-
ing in the bottom zone of hot-metal charging ladles.
4. A protective coating to keep carbon from undergoing
combustion during the heating period.
5. Mortar to make the joints between the products as the
lining is being installed.
Refractories and Industrial Ceramics Vol. 52, No. 4, November, 2011
1083-4877/11/05204-0240 © 2011 Springer Science+Business Media, Inc.
From materials of the International Conference of Refractory
Specialists and Metallurgists (March 31 – April 1, 2011, Moscow).
Borovichi Refractories Combine, Borovichi, Novgorod Region,
Fig. 1. Phase formation in the thermodynamic system of the refrac
tory that was developed.