Dechlorination of ferric chloride with oxygen.
Henderson-AW; Campbell-TT; Block-FE
Metall Trans 1972 Oct; 3(10):2579-2583
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.
Iron-oxides; Oxidative-processes; Metallurgical-processes; Mineral-processing; Chemical-reactions; Chemical-properties; Chemical-kinetics; Gas-mixtures; Gases
7782-50-5; 7439-89-6; 7782-44-7
OP; Journal Article
Metallurgical Transactions. B. Process Metallurgy