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    • 1. 发明申请
    • ENERGY EFFICIENT SALT-FREE RECOVERY OF METAL FROM DROSS
    • 从能源效率高效地回收金属
    • US20170009319A1
    • 2017-01-12
    • US15094857
    • 2016-04-08
    • Pyrogenesis Canada Inc.
    • Michel G. DrouetFrancois RivardPierre Carabin
    • C22B21/00C22B7/04C22B9/05F27D3/16F27B7/10F27B7/16F27B7/20C22B21/06F27B7/06
    • C22B21/0092C22B5/00C22B7/003C22B7/04C22B9/055C22B13/045C22B19/20C22B21/00C22B21/0069C22B21/064C22B23/04F27B7/06F27B7/10F27B7/16F27B7/2016F27B17/00F27D3/16F27D2003/163F27D2003/167Y02P10/218Y02P10/232Y02P10/262
    • A process and an apparatus are disclosed for improved recovery of metal from hot and cold dross, wherein a dross-treating furnace is provided with a filling material with good capacity to store heat. This filling material is preheated to a desired temperature by injection of an oxidizing gas to burn non-recoverable metal remaining in the filling material after tapping of the recoverable metal contained in the dross and discharging of the treatment residue. When dross is treated in such furnace, the heat emanating by conduction from the filling material is sufficient to melt and separate the recoverable metal contained in the dross, without addition of an external heat source, such as fuel or gas burners, plasma torches or electric arcs and without use of any salt fluxes. Furthermore, the recovered metal being in the molten state can be fed to the molten metal holding furnace without cooling the melt; in addition, the non-use of fluxing salt for the treatment means that the non-contaminated residue can be used as a cover for the electrolytic cells in the case of aluminum. In the case of zinc dross, the residue is a valuable zinc oxide by-product very low in contaminants.
    • 公开了一种用于从热和冷浮渣中改善金属回收的方法和装置,其中,浮渣处理炉具有能够储存热量的填充材料。 通过注入氧化气体将该填充材料预热至期望的温度,以在开采渣中含有的可回收金属并排出处理残渣后,将残留在填充材料中的不可回收金属燃烧。 当在这种炉子中处理浮渣时,通过从填充材料的传导发出的热量足以熔化和分离渣滓中包含的可回收金属,而不需要添加外部热源,例如燃料或气体燃烧器,等离子炬或电 弧并且不使用任何盐流。 此外,处于熔融状态的回收金属可以不熔化熔体而被供给到熔融金属保持炉中; 此外,不使用助熔盐用于处理意味着在铝的情况下,未污染的残余物可以用作电解池的覆盖物。 在锌渣的情况下,残留物是有价值的氧化锌副产物,污染物非常低。
    • 4. 发明申请
    • Inline degassing apparatus
    • 在线脱气装置
    • US20030151176A1
    • 2003-08-14
    • US10365443
    • 2003-02-13
    • Pyrotek Japan Limited
    • Yoshikazu OhnoShunji Mochizuki
    • C22B009/05
    • F27D3/16C22B9/05C22B21/066F27D3/14F27D11/02F27D2003/167F27D2003/168F27D2019/0003F27D2027/002H05B3/78
    • An inline degassing apparatus for removing solid solution gases as well as nonmetallic inclusions from molten metal in a degassing container, to which the molten metal is continuously introduced for degassing operation and from which the degassed molten metal is continuously removed. A rotary diffusing device is arranged in the degassing container for generating bubbles of inert gas diffused into the molten metal, thereby entrapping solid solution gases as well as nonmetallic inclusions into the bubbles, which are then floated and separated. Heaters are provided, which extend, in a cantilever fashion, from a side wall of container at a position adjacent the bottom wall of the container substantially parallel to the bottom wall.
    • 一种用于从脱气容器中的熔融金属中除去固溶体气体以及非金属夹杂物的在线脱气装置,熔融金属连续引入该脱气容器中以进行脱气操作,并且从其中连续除去脱气的熔融金属。 旋转扩散装置设置在脱气容器中,用于产生扩散到熔融金属中的惰性气体的气泡,从而将固溶体气体以及非金属夹杂物夹带到气泡中,然后浮起并分离。 提供加热器,其以悬臂的方式从与容器的底壁相邻的位置的基本上平行于底壁的位置从容器的侧壁延伸。