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Title: Method for continuously recovering metals using a dual zone chemical reactor

A dual zone chemical reactor continuously processes metal-containing materials while regenerating and circulating a liquid carrier. The starting materials are fed into a first reaction zone of a vessel containing a molten salt carrier. The starting materials react to form a metal product and a by-product that dissolves in the molten salt that flows to a second reaction zone in the reaction vessel. The second reaction zone is partitioned from, but in fluid communication with, the first reaction zone. The liquid carrier continuously circulates along a pathway between the first reaction zone and the second reaction zone. A reactive gas is introduced into the second reaction zone to react with the reaction by-product to generate the molten salt. The metal product, the gaseous waste products, and the excess liquid carrier are removed without interrupting the operation of the reactor. The design of the dual zone reactor can be adapted to combine a plurality of liquid carrier regeneration zones in a multiple dual zone chemical reactor for production scale processing.
Inventors:
 [1]
  1. (Livermore, CA)
Issue Date:
OSTI Identifier:
869745
Assignee:
United States of America as represented by United States (Washington, DC) LLNL
Patent Number(s):
US 5389123
Contract Number:
W-7405-ENG-48
Research Org:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Country of Publication:
United States
Language:
English
Subject:
method; continuously; recovering; metals; dual; zone; chemical; reactor; processes; metal-containing; materials; regenerating; circulating; liquid; carrier; starting; fed; reaction; vessel; containing; molten; salt; react; form; metal; product; by-product; dissolves; flows; partitioned; fluid; communication; circulates; pathway; reactive; gas; introduced; generate; gaseous; waste; products; excess; removed; interrupting; operation; design; adapted; combine; plurality; regeneration; zones; multiple; production; scale; processing; recovering metals; chemical reactor; waste product; reactive gas; starting material; molten salt; reaction zone; fluid communication; reaction vessel; starting materials; vessel containing; liquid carrier; waste products; metal product; zone chemical; containing material; dual zone; regeneration zone; excess liquid; reactor continuously; covering metal; containing materials; /75/423/