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Dechlorination of ferric chloride with oxygen.

Authors
Henderson-AW; Campbell-TT; Block-FE
Source
Metall Trans 1972 Oct; 3(10):2579-2583
NIOSHTIC No.
10010470
Abstract
Because of increasing ecological concern, the Bureau of Mines is investigating the use of chlorination technology in extractive metallurgy. A key problem is the fact that ferric chloride is commonly generated during processing of a wide variety of ores and minerals. This paper describes small, laboratory-scale studies designed to effect declorination of ferric chloride by oxygen in a fluidized bed reactor to produce a viable, nonpolluting iron oxide product and chlorine gas, which could be recycled in a chlorination process. These studies demonstrated that close to 100 percent conversions of ferric chloride to ferric oxide and chlorine can be effected by reaction with oxygen at temperatures ranging from 500 deg to 650 deg c. The offgas from the single-stage reactor contained up to 95 percent chlorine. The study also demonstrated that the presence of a small amount of nacl in the reactor catalyzed the reaction between ferric chloride and oxygen and permitted high conversions at temperatures as low as 450 deg c.
Keywords
Iron-oxides; Oxidative-processes; Metallurgical-processes; Mineral-processing; Chemical-reactions; Chemical-properties; Chemical-kinetics; Gas-mixtures; Gases
CODEN
MTTBCR
CAS No.
7782-50-5; 7439-89-6; 7782-44-7
Publication Date
19721001
Document Type
OP; Journal Article
Fiscal Year
1973
NTIS Accession No.
NTIS Price
Identifying No.
OP 146-72
Issue of Publication
10
ISSN
0360-2141
NIOSH Division
ALRC
Source Name
Metallurgical Transactions. B. Process Metallurgy
State
OR
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