会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 6. 发明授权
    • Methods for recycling electric arc furnace dust
    • 回收电弧炉粉尘的方法
    • US5538532A
    • 1996-07-23
    • US397409
    • 1995-03-02
    • Joseph F. Keegel, Jr.
    • Joseph F. Keegel, Jr.
    • C21B3/04C22B5/16C22B7/02C22B17/00C22B19/30C21B11/10
    • C21B3/04C22B17/00C22B19/24C22B19/30C22B5/16C22B7/02Y02P10/216Y02P10/234Y02W30/542Y10S75/961
    • A method for the separation and recovery of metals selected from the group consisting of iron, cadmium, zinc, and lead, from raw material comprising a mixture of metals, which comprises the steps of heating the raw material to a temperature sufficient to substantially vaporize cadmium, zinc, and lead, and insufficient to substantially vaporize iron; separating secondary dust and vapors produced during the first step from the residual sinter mass, which mass comprises iron; slurrying the secondary dust in an aqueous solution of ammonia ammonium carbonate to dissolve zinc and cadmium; separating a zinc/cadmium bearing leach liquor from substantially insoluble lead containing particles by filtration; treating the zinc/cadmium bearing leach liquor to recover cadmium by adding metallic zinc to the leachate to produce a cadmium containing cement; separating the cement from the leach liquor; and removing ammonia from the leach liquor to precipitate basic zinc carbonate. The methods of the invention are especially suitable for treating electric arc furnace dusts.
    • 一种从包含金属混合物的原料中分离和回收选自铁,镉,锌和铅的金属的方法,包括以下步骤:将原料加热到足以使镉基本蒸发的温度 ,锌和铅,不足以使铁完全蒸发; 分离第一步中产生的二次灰尘和蒸气,剩下的烧结块包含铁; 将二次粉尘在氨水碳酸铵水溶液中制浆以溶解锌和镉; 通过过滤将含锌/镉的浸出液与基本上不溶的含铅颗粒分离; 处理含锌/镉浸出液,通过向浸出液中加入金属锌来生产含镉水泥来回收镉; 将水泥与浸出液分离; 并从浸出液中除去氨以沉淀碱式碳酸锌。 本发明的方法特别适用于处理电弧炉粉尘。