A method and use of an apparatus for recovery of metals or...

C - Chemistry – Metallurgy – 22 – B

Patent

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C22B 7/02 (2006.01) C22B 19/30 (2006.01)

Patent

CA 2580648

A method for recovery of metals or metal compounds from metal-bearing solid particles comprising volatile compounds comprises supplying the solid particles (50) through a flame (25) of a burner (20). The volatile compounds are then evaporated by means of heat from the flame (25) while maintaining the original shape and state of aggregate of the solid particles, thereby providing a raw material product (34). The raw material product (34) is then recovered. By feeding the solid particles directly to the flame, a compact and efficient plant is provided. The melting process can be controlled in a satisfying way, avoiding melting of the metal-bearing solid particles supplied through the burner. The use of a burner is also described.

L'invention concerne un procédé de recyclage de métaux ou de composés métalliques provenant de particules solides porteuses de métaux comprenant des composés volatiles. Ledit procédé consiste à alimenter les particules solides (50) à travers une flamme (25) d'un brûleur (20). Les composés volatiles sont ensuite évaporés par la chaleur de la flamme (25) tout en conservant la forme et l'état originaux d'agrégat des particules solides, ce qui permet ainsi d'obtenir une matière première brute (34). La matière première brute (34) est ensuite recyclée. Du fait de l'alimentation des particules solides directement vers la flamme, on obtient une installation compacte et efficace. Le procédé de fusion peut être contrôlé de manière satisfaisante, ce qui permet d'éviter la fusion des particules solides porteuses de métaux alimentées à travers le brûleur. L'invention concerne également l'utilisation d'un brûleur.

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