公开(公告)号：WO1996002681A1

公开(公告)日：1996-02-01

申请号：PCT/CA1995000416

申请日：1995-07-14

Applicant: ALCAN INTERNATIONAL LIMITED

Inventor： ALCAN INTERNATIONAL LIMITED ,  DUBE, Ghyslain ,  LITALIEN, Marko ,  PELLETIER, Roger ,  WANG, Zhou

IPC: C22B21/00

CPC classification number: C22B7/04 ,  C22B9/226 ,  C22B21/0092 ,  Y02P10/218

Abstract: The invention relates to a process of recovering a non-ferrous metal from a dross containing the same. The process involves introducing into a furnace (preferably a rotary furnace) the dross and a coalescing aid for the metal, heating the dross and fluoride compound to a treatment temperature above the melting point of the metal, using a heating device which substantially maintains a non-oxidizing atmosphere in the furnace, agitating the dross until it reaches the treatment temperature, removing the molten metal thereby separated from a solid dross residue and removing the solid dross residue from the furnace. The coalescing aid is fluoride salt or mixture that remains substantially solid at the treatment temperature, for example, cryolite, recovered cryolite, AlF3 or NaF, or a mixture thereof. The salt or mixture remains in the dross during the process and does not make the dross become sticky, thus avoiding agglomeration of the dross particles. The use of the fluoride improves the rate of recovery of the metal content of the dross without producing environmental difficulties either during the heating operation or during the disposal or use of the dross residue.

Abstract translation: 本发明涉及从含有该金属的浮渣回收有色金属的方法。 该方法包括向熔炉（优选旋转炉）中引入浮渣和用于金属的聚结助剂，使用加热装置将浮渣和氟化物加热到高于金属熔点的处理温度，该加热装置基本上保持非金属， 在炉中搅拌氧化气氛，直至达到处理温度，除去熔融金属，从固体渣渣中分离，并从炉中除去固体渣渣。 聚结助剂是在处理温度下保持基本上固体的氟化物盐或混合物，例如冰晶石，回收的冰晶石，AlF 3或NaF，或其混合物。 在该过程中，盐或混合物保留在渣滓中，并且不会使浮渣变粘，从而避免浮渣颗粒的团聚。 氟化物的使用提高了浮渣的金属含量的回收速率，而不会在加热操作期间或在处理或使用渣渣期间产生环境困难。

公开(公告)号：WO1995015404A1

公开(公告)日：1995-06-08

申请号：PCT/CA1994000652

申请日：1994-11-25

Applicant: ALCAN INTERNATIONAL LIMITED

Inventor： ALCAN INTERNATIONAL LIMITED ,  TREMBLAY, François ,  TURCOTTE, Gilles, R. ,  LAVOIE, Serge ,  DUBE, Ghyslain ,  TREMBLAY, Sylvain, P. ,  FORTIN, Jean-Yves

IPC: C22B21/00

CPC classification number: C22B9/16 ,  C22B7/004 ,  C22B21/0007 ,  Y02P10/218

Abstract: A method of recovering an aluminum-containing metal (16) from a scrap material (14, 14') containing the metal and an organic contaminant, such as paper, plastics, lacquer, paint or oil. The method involves creating a fluidized bed (10) of solid particles, maintaining a zone of the bed at a temperature in the range of the melting point of the metal to 1000 DEG C, introducing the scrap material into the fluidized zone to cause decoating of the metal within a time in the range of 1 to 40 seconds, at least partially melting the metal, and removing the metal material from the fluidized bed. In this way, decoating and at least partial melting is achieved essentially at the same time for improved efficiency. Metals of different melting point may also be separated from each other by providing a series of temperature zones in the fluidized bed (or in a series of fluidized beds) of progressively increasing temperature. If a limited amount of oxygen is introduced into the bed, a combustible gas is produced that can be burned to extract its energy or can be stored for later use.

Abstract translation: 一种从含有金属和有机污染物如纸，塑料，漆，油漆或油的废料（14,14'）回收含铝金属（16）的方法。 该方法包括产生固体颗粒的流化床（10），将床的区域保持在金属熔点范围内的温度至1000℃，将废料引入流化区以引起脱色 金属在1至40秒的范围内的时间内，至少部分地熔化金属，并从流化床除去金属材料。 以这种方式，脱蜡和至少部分熔融基本上在同时实现以提高效率。 通过在逐渐升高的温度的流化床（或一系列流化床）中提供一系列温度区，也可以将不同熔点的金属彼此分离。 如果将有限量的氧气引入床中，则产生可燃烧的气体，其可以被燃烧以提取其能量，或者可以储存以备后用。

公开(公告)号：WO1991001950A1

公开(公告)日：1991-02-21

申请号：PCT/CA1990000235

申请日：1990-07-26

Applicant: ALCAN INTERNATIONAL LIMITED

Inventor： ALCAN INTERNATIONAL LIMITED ,  DUBE, Ghyslain ,  CHAUVETTE, Gaetan

IPC: C03C13/06

CPC classification number: C03C13/06

Abstract: A process for producing mineral fibers and the fibers thus produced are disclosed. The process involves forming a melt comprising an alumina-containing residue from a metal melting operation and one or more mineral raw materials suitable for forming mineral fibers, dividing the melt into streams and cooling the streams to produce the fibers. The residue from the metal melting operation acts as an inexpensive, substantially non-polluting source of alumina which can be used to increase the alumina content of the fibers and thus improve their properties, or which can be used as a replacement for more expensive or less desirable sources of alumina.