Experience gained in increasing the durability of steel-teeming ladle linings at the West Siberian Metallurgical Works

Borisov, Yu. N.; Marakulin, Yu. A.; Nikolaev, V. F.; Presnyakov, A. P.

doi:10.1007/bf01402762

Refractories

1980

DOI: 10.1007/bf01402762

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Experience gained in increasing the durability of steel-teeming ladle linings at the West Siberian Metallurgical Works

Yu. N. Borisov

Yu. A. Marakulin

V. F. Nikolaev

et al.

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1987

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“…The use of these parts has made it possible to increase the ladle lining life by four or five teemings in comparison with the earlier used lining of high-alumina refractories with 62 wt. % AI203 [2].The mechanism of steel pouring ladle lining wear is a complex process dependent upon many factors. The primary factor is the chemical action of the aggressive slag.…”

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Tests of unfired silica parts in steel pouring ladle linings in pouring electric furnace steel

et al. 1987

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The life of a steel pouring ladle refractory lining depends upon the service properties of the refractories, the quality of laying the lining, the mortar used, the chemical composition of the slag, and the type of steel poured and its temperature.In domestic and foreign practice unfired refractories, including silica ones, are finding ever increasing use together with fired ones. At present the basic requirements imposed on refractories for lining steel pouring ladles are not only long service life and low consumption per ton of steel melted but also economy in fuel and power consumption in production of them.All of the above refers not only to steel teeming ladle refractories in teeming open hearth and converter steel in steel plants but also to refractories used for lining the ladles of smaller plants in pouring of steel from electric melt furnaces in machine building plants. In these plants steel pouring ladles of various designs, types, and sizes are used and it is not always economically desirable to organize an area for preparation Of rammed or poured linings by a mechanized method. Therefore the necessity arises of selection of the most effective refractory material for lining ladles with individual parts.Unfired silica refractories have a number of advantages, especially for the service conditions in steel pouringladles, including the practically complete absence of waste in production and increased heat resistance in service. The structure and phase composition of unfired parts is formed during service in accordance with the temperature distribution across the lining thickness, which causes the occurrence of low internal stresses in the volume of the part and, consequently, increases'the general resistance of the whole refractory lining[1].Unfired silica refractories are being used successfully in the working layer lining of 142-ton steel teeming ladles inteeming converter steel at Western Siberia Metallurgical Combine. The use of these parts has made it possible to increase the ladle lining life by four or five teemings in comparison with the earlier used lining of high-alumina refractories with 62 wt. % AI203 [2].The mechanism of steel pouring ladle lining wear is a complex process dependent upon many factors. The primary factor is the chemical action of the aggressive slag. The action of the slag on the lining decreases with an increase in silica content in the refractory. It has been established that the wear of silica refractories in ladles is caused primarily byeutectic fusion without the formation of new chemical compounds [3].The higher life of silica refractories may be explained by the fact that silica is less soluble in the slag.In heating, silica parts increase in volume, close their joints, and an almost monolithic lining is formed. The glassy layer formed protects the refractory lining from further corrosion.This article presents the results of tests of unfired silica parts in the working layer of the lining of a 7-ton ladle with a stopper in pouring carbon electric furnace steel in Kharkov...

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Tests of unfired silica parts in steel pouring ladle linings in pouring electric furnace steel

et al. 1987

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Experience gained in increasing the durability of steel-teeming ladle linings at the West Siberian Metallurgical Works

Cited by 1 publication

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Tests of unfired silica parts in steel pouring ladle linings in pouring electric furnace steel

Tests of unfired silica parts in steel pouring ladle linings in pouring electric furnace steel

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