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Beneficiation of graphite fines from moulding factory wastes.
Koca, Sabina; Koca, Huseyin.
Afiliação
  • Koca S; Osmangazi University, Engineering Faculty, Mining Engineering Department, Eskisehir, Turkey.
Waste Manag Res ; 23(4): 338-42, 2005 Aug.
Article em En | MEDLINE | ID: mdl-16200984
ABSTRACT
As the costs of waste disposal increase, more attention is being placed upon the re-use and recycling of valuable minerals contained within the waste streams. In this article, the waste streams from a moulding factory were treated by physical methods to obtain a re-usable graphite fraction. Multi-gravity separators (MGS) and shaking tables (ST) are being used in coal processing and heavy minerals beneficiation. In the present study, the possibility of using an MGS and ST to separate graphite from moulding sand was analysed as part of such investigations. The effects of changes in different process variables on the concentrate sand content and graphite recovery values were studied. Several parameters, thought to have an effect on the separation were tested. After the ST experiments, a graphite concentrate was obtained having 4.5% sand content with 60.8% recovery. After the investigations carried out by MGS, a graphite concentrate was obtained having 0.95% sand content with 68.0% recovery. The results demonstrated that recovered graphite fractions can be re-used in the factory, thus reducing the quantity of waste and costs.
Assuntos
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Base de dados: MEDLINE Assunto principal: Eliminação de Resíduos / Conservação dos Recursos Naturais / Grafite / Resíduos Industriais País como assunto: Asia Idioma: En Ano de publicação: 2005 Tipo de documento: Article
Buscar no Google
Base de dados: MEDLINE Assunto principal: Eliminação de Resíduos / Conservação dos Recursos Naturais / Grafite / Resíduos Industriais País como assunto: Asia Idioma: En Ano de publicação: 2005 Tipo de documento: Article