A M E T H O D OF R E P A I R I N G THE

T U Y E R E S

V. E.

Translated from Metatlurg, No. 3, p. 12, March, 1962

LINERS OF B L A S T - F U R N A C E

l lSe.

The ends of the inner sleeves (liners) of blast-furnace tuyeres which protrude into the furnace burn off during Formerly, liners which had been burned short were written off as scrap and sent to be remelted.

Fig. 5. Liner.

In order to extend the service period of the liners and curtait the consumption of copper of which they are made, in the Magnitogorsk Metallurgical Combine, on the suggestion A. N. Novikov and M. P. Agarkov, a copper ring is welded

with the gas arc to the burned end of the liner which is first machined on a turning lathe (Fig. 5). The welding is done from both inside and outside. After welding on the ring, the

bead on the inner side is trimmed so that the ridge should have

no effect on the air flow.

This repair allows the same liner to be used 3-4 times. This provides a great saving of copper. The economical effect of introducing this procedure amounts to about 2000 rubles per

yea~

The procedure can be recommended for introduction at other plants.

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