Author(s):
Coelho, A. V. Pinto 
Date: 2008
Persistent ID: http://hdl.handle.net/10362/1471
Origin: Repositório Institucional da UNL
Subject(s): Aluminium ore; nepheline syenite; Monchique; Portugal
Document details
O problema da extracção do alumínio a partir dos sienitos nefelínicos
Description
Some countries producers of the aluminium, attempt to use other ores which, in the future, will gradually substitute the bauxite as a raw material. Portugal possesses an nephelinic syenite massif which may be utilized for this purpose because the nepheline offers some advantages above other poor ores which are being essayed now. By laboratorial processes, the author puts forward those advantages and calls the attention for the necessity of to accomplish essays about the nepheline (by the acid's method) and realize petrographic's detailed reconnaissances of the Monchique syenitic massif.
Some countries producers of the aluminium, attempt to use other ores which, in the future, will gradually substitute the bauxite as a raw material. Portugal possesses an nephelinic syenite massif which may be utilized for this purpose because the nepheline offers some advantages above other poor ores which are being essayed now. By laboratorial processes, the author puts forward those advantages and calls the attention for the necessity of to accomplish essays about the nepheline (by the acid's method) and realize petrographic's detailed reconnaissances of the Monchique syenitic massif.
Document Type
Article
Language Portuguese
Language Portuguese
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