公开(公告)号：US20130186236A1

公开(公告)日：2013-07-25

申请号：US13655204

申请日：2012-10-18

Applicant: Pyrogenesis Canada Inc.

Inventor： Michel G. Drouet ,  Francois Rivard ,  Pierre Carabin

IPC: C22B21/00 ,  C22B19/20 ,  C22B3/00 ,  C22B5/00

CPC classification number: C22B21/0092 ,  C22B5/00 ,  C22B7/003 ,  C22B7/04 ,  C22B9/055 ,  C22B13/045 ,  C22B19/20 ,  C22B21/00 ,  C22B21/0069 ,  C22B21/064 ,  C22B23/04 ,  F27B7/06 ,  F27B7/10 ,  F27B7/16 ,  F27B7/2016 ,  F27B17/00 ,  F27D3/16 ,  F27D2003/163 ,  F27D2003/167 ,  Y02P10/218 ,  Y02P10/232 ,  Y02P10/262

Abstract: 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 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.

Abstract translation: 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在不使熔体冷却的情况下进料到熔融金属保持炉。