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CARACTERIZAÇÃO DE TALCO PURIFICADO DE RESÍDUOS DE PEDRA SABÃO

Authors: GARCIA, N. H.; RODRIGUES, M. M. L.; LIMA, M. M. F.; Lima, Rosa Malena Fernandes;

CARACTERIZAÇÃO DE TALCO PURIFICADO DE RESÍDUOS DE PEDRA SABÃO

Abstract

Nesse trabalho estão apresentados os resultados dos ensaios de caracterização de talco purificado de resíduos de pedra sabão, oriundos de Santa Rita de Ouro Preto, após lixiviação de concentrados de flotação com ditionito de sódio (Na2S2O4) e ácido clorídrico (HCl). A caracterização tecnológica desses materiais constou de análise granulométrica, efetuada por espalhamento de raios laser (Cilas 1064), difração de raios X (método do pó total), análises químicas, efetuadas por espectroscopia ótica de emissão-plasma de acoplamento indutivo além da determinação de alvura ISO. Para os concentrados de flotação lixiviados com ditionito de sódio e ácido clorídrico foram obtidas alvuras de 73,7 e 79,6%, respectivamente, representado aumento de 3 e 9% em relação a alvura do concentrado da flotação. Verificou-se que cerca de 80% das partículas das amostras de talco lixiviadas encontravam-se abaixo de 10 µm. Os minerais identificados nos difratogramas de raios X foram talco e clinocloro. O maior aumento da alvura do produto lixiviado com HCl, está relacionado com a diminuição dos teores de Fe2O3, Ni, Zn em relação à alimentação (concentrado da flotação).

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
1
Average
Average
Average
Green
gold