DEVELOPMENT OF A TECHNOLOGY FOR MANUFACTURE
OF PERICLASE-CARBON REFRACTORIES
V. N. Kungurtsev,
L. V. Mironova,
Yu. N. Kochubeev,
and Yu. A. Borisova
Translated from Ogneupory i Tekhnicheskaya Keramika, No. 1, pp. 19 – 22, January, 2002.
A technology for manufacture of periclase-carbon refractories for the lining of steel-teeming ladles of oxy
gen-blowing converter is developed.
Over the past five years, there has been the tendency at
numerous metallurgical plants to use nonfired carbon-con
taining basic refractories in the replacement of ramming
mixtures and aluminosilicate products because of the in-
creasingly stringent demands placed on the performance of
steel-teeming ladles . At present, certain metallurgical
plants in Russia — Magnezit JSC, BKO JSC, SOZ JSC, and
Dinur JSC — have organized production of periclase-carbon
refractories and are in fact monopolist suppliers of these
products for the lining of steel-teeming ladles of oxygen-
converter technology. In 2000, production of these materials
was organized in a magnesia-dolomite refractory shop at the
Magnitogorskii Metal-and-Steel Works (MMSW) Joint-
The technology in question was developed for produc
tion of a gun mass using the existing and newly-purchased
equipment: a weight-dosing unit, a highly efficient mixer
(Eirich, Germany), and two presses Laies-1600 and
Laies-2500 (one in operation, and the other in installation-
At present, a magnesite (of provenance from China) con
taining 92% of magnesium oxide is used for the production
of refractories. The carbon-containing component is graphite
(GÉ-1 or GT-1 grade) of provenance from various deposits,
and the binder is a phenol-based powder and ethylene glycol.
The technology admits the use of an antioxidant.
A flowchart of the process is shown in Fig. 1.
In the early phase (installation and checkout work), the
main processing units were tested in a running-in regime to
establish operating routine conditions of the grinding, mix
ing, and pressing equipment.
In the later phase, the main parameters of the production
technology of periclase-carbon refractories were refined.
The newly organized production of magnesia-dolomite
refractories has an advantage over other domestic technolo
gies in that it allows the preliminary preparation of powders.
This makes possible the purchase of cheaper precursor mate-
rials (the size-fractionated periclase is on average 30% more
expensive) and provides a more uniform granulometric com-
position of the mixture, which is as important a condition for
stable quality of the final products.
Actually, mixing is a key operation that ultimately deter-
mines the service life of refractory products. Because of the
Refractories and Industrial Ceramics Vol. 43, Nos.1–2, 2002
1083-4877/02/0102-0019$27.00 © 2002 Plenum Publishing Corporation
Magnitogorskii Metal-and-Steel Works Joint-Stock Co., Magnito
Stockpiling and storage
of periclase powders and additives
Crushing of periclase powders
periclase powders, mm
Fig. 1. Flowchart for the production of periclase-carbon refrac