Clean vacuum pyrogenic process zinc smelting device and zinc smelting method

The invention provides a clean vacuum pyrogenic process zinc smelting device and a zinc smelting method. The clean vacuum pyrogenic zinc smelting device comprises a heating furnace, a reduction tank assembly, a vacuum unit and a condensing device which are arranged on a support, the condensing device comprises a cooling pipe containing twisted iron, a cooling fan, a condensing device cyclone dustremoval outer barrel, a zinc liquid conveying pipe, a liquid zinc collecting pool and a zinc liquid pouring pool, the lower end of the cooling pipe set containing the twisted iron is sleeved with thecondensing device cyclone dust removal outer cylinder, the zinc liquid collecting pool is arranged under the cooling pipe set containing the twisted iron and connected with the zinc liquid pouring pool through the zinc liquid conveying pipe, the heat preservation heating layer is arranged outside the zinc liquid conveying pipe, and the cooling fan is connected with a cooling pipe group shell containing twisted iron through