The invention belongs to the technical field of
zinc extraction rotary kilns, and particularly relates to a
zinc extraction
rotary kiln head capable of preventing
refractory materials from falling off and prolonging the service life of a
barrel. Comprising a cylinder body, an outer cover body, a middle cover body and an inner cover body are erected outside the cylinder body, a
necking opening is fixed to one end of the cylinder body, annular reinforcing ribs are welded to the
necking opening, the cylinder body and the inner wall of the joint of the cylinder body and the
necking opening, a plurality of axial reinforcing ribs are welded between the adjacent annular reinforcing ribs, and a plurality of protection plates are fixed to the outer wall of the joint of the cylinder body and the necking opening. A conical protective sleeve is fixed to the outer wall of the necking opening, a plurality of anchoring hooks are welded to the necking opening and the inner wall of the
barrel, an annular
air cooling pipe is erected on the outer side of the
barrel, a plurality of air outlet holes are formed in the annular
air cooling pipe, the air outlet directions of the air outlet holes face the barrel, and pouring materials are poured to the inner walls of the barrel and the necking opening. According to the invention, through the synergistic effect from multiple aspects,
refractory falling is reduced, the service life of the barrel is prolonged, the overall operation efficiency of the
rotary kiln is improved, and the maintenance cost and the production
downtime are reduced.