Vitrification treatment of asbestos waste with incineration ash of solidwaste

Eiki Kasai, Hiroshi Goto, Yusuke Mase

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Asbestos fibers have been widely used in various industrial products due to their excellent properties such as thermal stability, chemical resistance and electric insulation. However, it has become to be widely recognized that long-term heavy exposure to airborne asbestos fibers led to serious respiratory diseases such as fibroid lung and malignant mesothelioma. Therefore, its usage is being withdrawn and proper treatment of their wastes is being required. Major asbestos minerals so far used are chrysotile, crocidolite and amosite, and they have relatively high melting temperatures. Further, actual melting temperatures of their wastes are highly depending on the coexisting materials, since most of them have been utilized as mixtures with other construction materials such as mortar. In this study, a simultaneous melting treatment of asbestos wastes and incineration ash of solid wastes was proposed in order to increase flexibility for controlling the fluidity of the formed slag melt during their virification treatment. In addition, a simple and convenient test method was proposed to quickly evaluate the high temperature property of asbestos wastes. By applying this method, a number of the melting experiments were carried out under different conditions using chemical reagents and asbestos wastes, incineration ashes, candidate fluxing materials and slags sampled from an actual melting furnace. Further, in order to control the slag melt property on site, several series of the verification tests were carried out using a practical melting furnace for incineration ash of industrial wastes. It was confirmed that the proposed way was effective to promptly adjust the slag melt fluidity through the evaluation of its composition by the melting test.

Original languageEnglish
Pages (from-to)353-357
Number of pages5
JournalHigh Temperature Materials and Processes
Volume30
Issue number4
DOIs
Publication statusPublished - 2011 Aug 1

Keywords

  • Asbestos waste
  • Fluidity of melt
  • Fluxing material
  • Slag composition
  • Vitrification treatment

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Physical and Theoretical Chemistry

Fingerprint Dive into the research topics of 'Vitrification treatment of asbestos waste with incineration ash of solidwaste'. Together they form a unique fingerprint.

  • Cite this