FIELD: metallurgy.
SUBSTANCE: well furnace comprises preparation zone, zone for roasting, cooling zone, charging and discharging devices, and lined well that is provided with a gas-distributing ceramic core in the zone of roasting and composed of central pillar and walls that form sectors. The central pillar is hollow. The sectors of the gas-distributing core are made of closed ceramic structures provided with horizontal passages connected with the space of the central pillar through openings. The brickwork of sectors is disconnected from the brickwork of the well and the central pillar to permit them to move vertically one with respect to the other. In the horizontal plane, they have temperature sews between them.
EFFECT: simplified structure and enhanced reliability.
6 cl, 4 dwg
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