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    • 3. 发明授权
    • Process of treating waste containing zinc oxide
    • 处理含氧化锌废物的工艺
    • US6132488A
    • 2000-10-17
    • US125029
    • 1998-08-14
    • Toshikatu HaraHirohiko SasamotoYuji OkadaKazuhiro Suzuki
    • Toshikatu HaraHirohiko SasamotoYuji OkadaKazuhiro Suzuki
    • B09B3/00C22B7/00C22B7/02C22B13/02C22B19/04C22B19/30
    • C22B19/04C22B13/025C22B19/30C22B7/001C22B7/02Y02P10/214Y10S75/961
    • A treating method of recovering zinc in the metal state from a waste containing the zinc in the oxide state, lead, chlorine, fluorine, and water comprising a mixing process 90 of obtaining a to-be-treated mixed material 70 by mixing a steel dust 7 and a reducing material 8 together; a chlorine recovery process 91 of recovering the chlorine and the water by heating the to-be-treated mixed material 70; a lead recovery process 92 of recovering fluorine and lead by heating the to-be-treated mixed material 70 under vacuum; a zinc recovery process 93 of recovering metallic zinc by heating the to-be-treated mixed material 70 at a temperature higher than that in the lead recovery process 92 with the vacuum state maintained so as to reduce and vaporize zinc; and a residue recovery process 94 of recovering a residue 79 of the to-be-treated mixed material 70. This construction allows the metallic zinc to be recovered at a high purity from a zinc oxide-containing waste and an on-site treatment to be accomplished.
    • PCT No.PCT / JP97 / 00372 Sec。 371日期:1998年8月14日 102(e)日期1998年8月14日PCT 1997年2月12日提交PCT公布。 公开号WO97 / 30182 日期1997年8月21日一种从含有氧化态锌,废水,氟,氟和水的废物中回收金属状态的锌的处理方法,包括获得待处理混合材料70的混合工艺90 通过将钢粉7和还原材料8混合在一起; 通过加热待处理的混合材料70来回收氯和水的氯回收过程91; 通过在真空下加热待处理的混合材料70来回收氟和铅的铅回收过程92; 通过在保持真空状态的同时在高于铅回收工序92的温度下加热待处理的混合材料70来回收金属锌的锌回收工序93,以便锌的还原和蒸发; 以及回收待处理混合材料70的残余物79的残余物回收方法94.这种结构允许金属锌从含氧化锌的废物以高纯度回收并进行现场处理 完成了