Kiln tail sealing device of rotary kiln for roasting zinc smelting raw materials

The utility model discloses a kiln tail sealing device of a rotary kiln for roasting zinc smelting raw materials, which comprises a kiln tail smoke hood and a rotary drum, the end part of the rotary drum extends into the kiln tail smoke hood, a wear-resistant sleeve is arranged on the rotary drum, a taper sleeve is arranged on the side surface of the kiln tail smoke hood, a mounting ring is arranged on the taper sleeve, and a plurality of arc-shaped pressing plates are uniformly distributed on the inner circumference of the mounting ring. A sealing piece is arranged between each arc-shaped pressing plate and the outer wall of the taper sleeve, each sealing piece sequentially comprises a pressing layer, a refractory fiber felt layer, an outer sealing layer and an inner sealing layer from outside to inside, the end of each outer sealing layer abuts against the wear-resistant sleeve, and the outer side of the end of each inner sealing layer abuts against the wear-resistant sleeve after each inner sealing layer i