Process for recovering metals and other chemical components from

Details Process for recovering metals and other chemical components from Process for recovering metals and other chemical components from

1998-07-09

2000-09-12

Warden, Jill

Specialized metallurgical processes, compositions for use therei

Processes

Producing or treating free metal

95233, 502 22, C22B 700

Patent

active

061172073

ABSTRACT:
A process for recovering metal from spent catalyst, containing at least a metal component, comprising providing a heated, liquid metal bath, at a temperature sufficient to melt the metal in the spent catalyst, and create off gas from any volatile non-metal catalyst components, adding spent catalyst to the bath, collecting off gas from the bath, transporting the collected off gas to a gas cooler, and maintaining the off gas during the transportation at a temperature of at least about 875.degree. F.; rapidly cooling the off gas to less than about 275.degree. F. in no more than about 0.15 seconds, to prevent the formation of dioxin; and withdrawing melted metal from the bath, for reuse as catalyst.

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patent: 5424042 (1995-06-01), Mason et al.
patent: 5759229 (1998-06-01), Feitler

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