Recovery boiler spout

B - Operations – Transporting – 65 – G

Patent

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193/1

B65G 11/00 (2006.01)

Patent

CA 1127100

6 A B S T R A C T A spout (1) for discharging the smelt from recovery boilers in pulp mills provided with a water cooler (2), the outlet end (3) of which is surrounded by a second cooler (4) with a narrow channel (8) through which water can be pressed at a high speed resulting in an intense cooling of the outlet end which brings about an increased life of the spout. This life can be additionally improved by in- creasing the area of the spout by making longitudinal grooves (5) in the inner jacket (6). As the intense cooler (4) can be stopped when the outlet end (3) has been so worn down that there is a risk of holes, the spout can be used still some time with the conventional cooling (2) alone up to a previously planned shut down. Fig. 2

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