Published 1988
| Version v1
Miscellaneous
Synthetic mullite fabrication from smectite clays
- 1. Pernambuco Univ., Recife (Brazil). Dept. de Engenharia Quimica
Description
The technological importance of mullite is mostly due to its refractory properties. Mullite in native form is very rare, and therefore it may be necessary to produced it by synthetic means. Brazil has a large reserve of smectite clays. In this work the process to produce synthetic mullite from these clays by treatment with aluminum sulphate was studied. X-ray analyses has shown the presence of mullite crystals in treated smectite clays of several colours, sinterized at 11000C. By sintering at 13000C, pure mullite was obtained in some colours. (author)
Availability note (English)
Available from the Library of Comissao Nacional de Energia Nuclear, RJ (Brazil).Abstract (Portuguese)
A mulita e de interesse tecnologico devido as suas propriedades, principalmente as refratarias. A mulita pura na forma nativa e muito rara, sendo necessaria a producao de forma sintetica. Considerando a abundancia de argilas esmectiticas no Brasil, a obtencao de mulita sintetica a partir destas argilas atraves de tratamento com sulfato de aluminio foi estudada. Analises de difracao de raios-X nas amostras tratadas mostram que, apos tratamentos a 11000C, as argilas esmectiticas de diferentes cores apresentam cristais de mulita. Para tratamentos a 13000C, cristais de mulita pura foram sintetizados. (autor)Additional details
Additional titles
- Original title (Portuguese)
- Obtencao de mulita sintetica a partir de argilas esmectiticas
Publishing Information
- Imprint Pagination
- 3 p.
Conference
- Title
- 8. Brazilian Congress on Engineering and Materials Science.
- Dates
- 12-15 Dec 1988.
- Place
- Campinas, SP (Brazil).
INIS
- Country of Publication
- Brazil
- Country of Input or Organization
- Brazil
- INIS RN
- 20064693
- Subject category
- S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY;
- Resource subtype / Literary indicator
- Conference, Non-conventional Literature
- Descriptors DEI
- CRYSTAL STRUCTURE; FABRICATION; HEAT TREATMENTS; MULLITE; SMECTITE; SYNTHETIC ROCKS; TEMPERATURE DEPENDENCE; X-RAY DIFFRACTION
- Descriptors DEC
- CLAYS; COHERENT SCATTERING; DIFFRACTION; INORGANIC ION EXCHANGERS; ION EXCHANGE MATERIALS; MATERIALS; MINERALS; OXIDE MINERALS; ROCKS; SCATTERING; SILICATE MINERALS