STUDY OF THE PROPERTIES OF CERAMIC SURFACING MATERIAL
USED FOR RESTORING COKING CHAMBER LININGS
Ya. N. Pitak,
Yu. E. Prikhod’ko,
S. V. Gorbatko,
and I. V. Emchenko
Translated from Novye Ogneupory, No. 4, pp. 100 – 103, April 2010.
Original article submitted September 28, 2009.
Properties are given for original raw components and a production scheme is provided for preparing ceramic
surfacing for repairing the dinas lining of coking furnaces. Data are presented for x-ray phase and petrographic
analyses of ceramic surfacing. A deformation - temperature diagram is provided. Recommendations are given
for use of the proposed compositions for repairing heating units.
Keywords: ceramic surfacing, coking oven, diabase powder, crystalline ceramic, dinas lining.
In smelting iron the metallurgical industry requires a
considerable amount of coke [1 – 7]. Contemporary coke ov-
ens are complex heat engineering units that operate for 30
years or more. The specific nature of the production process
for coking coal (temperature above 1000°C, reducing atmo-
sphere) give rise to the complexity of coke oven construction
and the high specifications for the quality of the heating unit
lining. Recently the question has become particularly urgent
for prolonging the operating life of coke batteries.
The lining of a coking chamber during charging and de-
livery (Fig. 1) is subject to systematic temperature oscilla
tion, that leads to formation of holes and cracks in the refrac
tory components . Therefore there is a requirement for pe
riodic restoration of the broken areas of refractories without
stopping a heating unit and cooling the oven. Of the restora
tion methods for the lining of heating units (torcreting, flame
torcreting, ceramic surfacing) [7 – 11] in order to restore
coking chamber dinas refractories the most promising is the
method of ceramic surfacing, and it is sensible to use ceramic
mixes based on silicon dioxide.
As “fuel” components, that promote phase formation
during lining repair during ceramic surfacing, crystalline sili-
con and aluminum are used in the form of powder and the re-
fractory components used are quartz sand and diabase pow-
der. The chemical composition of crystalline silicon is, %: Si
96,92, Al 0.3, Fe 0.58, Ca 0.16, Ti 0.04; the chemical compo-
Refractories and Industrial Ceramics Vol. 51, No. 2, 2010
1083-4877/10/5102-00114 © 2010 Springer Science+Business Media, Inc.
NTU Khar’kov Polytechnic Institute, Khar’kov, Ukraine.
L’vov Commercial Academy, L’vov, Ukraine.
Fig. 1. Delivery of coke from coking chamber.
TABLE 1. Chemical composition of raw materials.
Material Oxide content, wt.%
Novoselov deposit quartz sand — 0.33 99.00 0.054 — — — 0.1
Diabase powder 0.4 19.00 50.30 12.50 4.53 3.90 4.6 0.21