Sílica gel obtida de escória de alto forno: Marabá, Pará
Silica gel with similar properties to commercial silica was obtained from blast furnace slag (EAF) using digestion with hydrochloric acid. The EAF-silica was obtained and characterized by different techniques. The results showed that the EAF-silica obtained was amorphous, with 99.7% purity and speci...
| Autor principal: | REBELO, Monaliza Maia |
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| Outros Autores: | NASCIMENTO, Lidiane Diniz do, CORRÊA, José Augusto Martins |
| Grau: | Artigo |
| Idioma: | por |
| Publicado em: |
Universidade Federal do Pará
2017
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| Assuntos: | |
| Acesso em linha: |
http://repositorio.ufpa.br/jspui/handle/2011/8581 |
| Resumo: |
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Silica gel with similar properties to commercial silica was obtained from blast furnace slag (EAF) using digestion with hydrochloric acid. The EAF-silica was obtained and characterized by different techniques. The results showed that the EAF-silica obtained was amorphous, with 99.7% purity and specific area 282 m2/g. It presented high hydrophilic character (12.27%), with constitution water of ~ 6.18%, which was confirmed by mass loss in thermogravimetric analysis. The EAF-silica particles had micrometric sizes (< 1 µm) with aggregates, unimodal size distribution and D50 7.0 µm. |