REFRACTORIES AT THE USER
THE USE OF A MULTIPLE-PURPOSE LINING OF THE CASTING LADLE
IN AN INTEGRATED STEEL-PROCESSING UNIT
AT THE OSKOL’SKII ELECTRICAL IRON AND STEEL WORKS
V. I. Éntin,
G. E. Karas’,
L. M. Aksel’rod,
E. I. Gontaruk,
S. N. Prosvirov,
T. I. Zolotareva,
and Yu. S. Rodgol’ts
Translated from Ogneupory i Tekhnicheskaya Keramika, No. 4, pp. 37 – 40, April, 2001.
A report is given on the production of periclase-carbon refractories using advanced technologies and raw
periclase of different quality grade at the Semilukskii Refractory Plant Joint-Stock Company (SRP JSC).
Refractories available from the SRP JSC were used at the Oskol’skii Electrical Iron and Steel Works JSC
(OEISW JSC) to fabricate the multiple-purpose lining for casting ladles exploited in vacuum furnaces and in-
tegrated steel-processing units. The endurance of the lining for the walls and the slag zone of the casting ladle
reaches 69 heats.
The development of modern technologies for processing
tapped steel imposes stringent requirements on the resistance
of the lining of casting ladles.
The Oskol’skii Electrical Iron and Steel Works Joint-
Stock Co. (OEISW JSC) has grown in experience in the ex
ploitation of carbon-containing refractory materials of the
lining of casting ladles used in conjunction with an inte
grated steel-processing unit (ISPU) at the Experimental Steel
Production Center (ESPC) . Since 1995, two ISPU units
(Fuks Systemtechnik) have been in service; during this pe
riod, the endurance of the periclase-carbon lining of casting
ladles decreased from 82 to 47 heats. With a view toward in
creasing the endurance of the lining, classical ladles were re
placed by wedge-shaped ladles of format R (standard size);
in the lining composition, the percentage of high-resistance
periclase-carbon refractories (available from a foreign manu
facturer) was also increased.
The endurance of the spinel-periclase-carbon refractories
of ShPUS-grade (available from Dinur JSC) was 48 heats
(maximum, 61 heats), with preventive replacement of refrac
tories of the slag zone and the bottom each 23 – 30 heats.
The endurance of the spinel-periclase-carbon refractories of
ShPUS-grade (available from Kombinat Magnezit JSC) was
56 heats on average, with preventive replacement of refrac-
tories of the slag zone and the bottom. The endurance of the
periclase-carbon refractories of PUKS and PUKP-grade
(available from Semilukskii Refractory Plant JSC) for the
wall lining and slag zone was 41 heats, with replacement of
bottom refractories only. The endurance of the foreign-pur
chased refractories in the casting-ladle lining in the 1998 ser
vice period was 60.8 heats (on average); there has been an
increased use of foreign-purchased carbon-containing refrac
tory materials from 44.1% (1996) to 86% (1998).
At the SRP JSC, the aforementioned periclase-carbon
refractories were prepared according to TU 14-199-109–98
specifications using sintered and fused periclase (purchased
from a Chinese manufacturer). Relevant characteristics
(chemical compositions, apparent powder density, and the
corresponding spreads in value) are given in Table 1.
In the periclase of provenance from China, an inhomo
geneity in chemical composition and a substantial spread in
density were observed; however, by the technology (includ
ing checkout methodology) developed at shop No. 1 (SRP
JSC), products with stable characteristics were obtained.
Structurally, both the sintered and fused periclase
(China) showed inhomogeneity even within a single batch.
In the fused material, colorless (occasionally, gold-colored)
Refractories and Industrial Ceramics Vol. 42, Nos.3–4, 2001
1083-4877/01/0304-0168$25.00 © 2001 Plenum Publishing Corporation
Semilukskii Refractory Plant Joint-Stock Company, Semiluki,
Novgorod Region, Russia; St. Petersburg Institute for Refractory
Materials Joint-Stock Company, St. Petersburg, Russia; Oskol’
skii Electrical Iron and Steel Works Joint-Stock Company, Stary