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Master's Dissertation
DOI
https://doi.org/10.11606/D.3.2009.tde-08092010-123058
Document
Author
Full name
Douglas Richter
E-mail
Institute/School/College
Knowledge Area
Date of Defense
Published
São Paulo, 2009
Supervisor
Committee
Chaves, Arthur Pinto (President)
Lima, José Renato Baptista de
Radino-Rouse, Patrícia
Title in Portuguese
Uma rota de recuperação de metal a partir de escória secundária da produção de ferroníquel.
Keywords in Portuguese
Concentração
Escória
Ferroníquel
Processamento de escória
Processamento de minérios
Abstract in Portuguese
A produção de ferroníquel está intimamente ligada à indústria siderúrgica. Todas as operações pirometalúrgicas pertencentes à rota de processo (calcinação, redução e refino) visam o melhor aproveitamento energético e a menor quantidade de impurezas no produto final. A etapa de refino pirometalúrgico produz escória rica em ferro e níquel, que normalmente é processada para recuperação destes metais e reinserção no processo, na própria etapa de refino ou no forno de redução, dependendo da quantidade de impurezas. Ensaios realizados com a escória granulada da Mineração Morro Azul mostram que é possível recuperá-los por processos físicos, de maneira similar à existente no local, porém com resultados superiores, mediante algumas alterações propostas para o circuito.
Title in English
A route for metal recovery from ferronickel production secondary slag.
Keywords in English
Concentration
Ferronickel
Metal recovery
Mineral processing
Slag
Abstract in English
Ferronickel production is intimately connected to the steel industry. All pyrometallurgical operations which comprise the process route (calcining, smelting, refining) aim at better energetic usage and smaller amount of impurities in the final product. The pyrometallurgical refining stage produces slag rich in iron and nickel, which is usually further processed for metal recovery and reinsertion back into the process, in the refining or smelting stages, depending on the amount of impurities. A series of tests carried out on the Mineração Morro Azul granulated refining slag shows that it is possible to recover the metallic particles through physical processing, similarly to the existing facility, but with improved results due to some alterations proposed for the circuit.
 
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Publishing Date
2010-09-28
 
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