Notes on the efficacy of wet versus dry screening of fly ash

• Tipo: Artigo em Revista Científica Internacional
• Data: 2008

Autores

Valentim, B (Autor) FCUP; Hower, JC (Autor) Outra; Flores, D (Autor) FCUP; Guedes, A (Autor) FCUP

Revista

A Revista está pendente de validação pelos Serviços Administrativos.

Título: MINERALS & METALLURGICAL PROCESSING

Vol. 25

Páginas: 143-148

ISSN: 0747-9182

Indexação

ISI Web of Knowledge - 5 Citações

Scopus - 5 Citações

Classificação Científica

FOS: Ciências da engenharia e tecnologias > Engenharia dos materiais

Outras Informações

ID Authenticus: P-003-XGX

DOI: 10.1007/bf03403400

Abstract (EN): The methodology used to obtain fly ash subsamples of different sizes is generally based on wet or dry sieving methods. However, the worth of such methods is not certain if the methodology applied is not mentioned in the analytical procedure. After performing a fly ash mechanical dry, sieving, the authors compared those results with the ones obtained by laser diffraction on the same samples and found unacceptable discrepancies. A preliminary, study of a wet sieving analysis carried out on an economizer fly ash sample showed that this method was more effective than the dry sieving. The importance of standardizing the way samples are handled, pretreated and presented to the instrument of analysis are suggested and interlaboratory reproducibility trials are needed to create a common standard methodology to obtain large amounts of fly ash size fraction subsamples.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 6