摘要 |
<p>This method comprises a mixing step (90) in which a mixed processing material is obtained by mixing waste (7) and a reducing agent (8) with each other, a chlorine recovering step (91) in which chlorine and water are then recovered by heating the mixed processing material, a lead recovering step (92) in which fluorine and lead are then recovered by heating the mixed processing material under vacuum, a zinc recovering step (93) in which metal zinc is then recovered by reducing and evaporating zinc by heating the mixed processing material at a temperature higher than that in the lead recovering step (92) with the vacuum condition maintained, and a residue recovering step (94) in which the residue of the mixed processing material is then recovered. The method of this constitution enables high-purity metal zinc to be recovered from zinc oxide-containing waste, and such waste to be processed on site.</p> |
申请人 |
AICHI STEEL WORKS, LTD.;TOYOTA JIDOSHA KABUSHIKI KAISHA;TOYOKIN CO., LTD.;HARA, TOSHIKATU;SASAMOTO, HIROHIKO;OKADA, YUJI;SUZUKI, KAZUHIRO |
发明人 |
HARA, TOSHIKATU;SASAMOTO, HIROHIKO;OKADA, YUJI;SUZUKI, KAZUHIRO |