Developement of de-asbestization method of building material containing asbestos using overheated steam

DOI

Bibliographic Information

Other Title
  • 過熱蒸気を用いたアスベスト無害化技術の開発

Abstract

The building materials containing asbestos were transformed into un-asbestos by heating in overheated steam, and it was confirmed that the building materials could be reused as starting materials of portland cement. Furthermore, in order to put this technique into practical use, examination of the real large-scale equipment, investigation of profit-and-loss, etc. were performed. 1) Under the atmosphere of overheated steam, the building materials containing asbestos were heated at 900 degree temperature for 1 hour, which resulted in de-asbestization. De- asbestization was confirmed first for six kinds of building materials in a small experimental device, and then for 200kg corrugated slate panels using the large-sized experimental device immediately after the temperature in the center of the piled building materials reached 900 degree temperature. 2) Non-asbestos materials produced in the small experiment apparatus from the six kind of building materials was crushed under 0.01mm in particle diameter, were analyzed by the fluorescence X-rays diffraction. The result showed that non-asbestos building materials could be used as raw material of cement by adjustment of the compositions with the addition of limestone and so on.

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Details 詳細情報について

  • CRID
    1390282680644220416
  • NII Article ID
    130005034293
  • DOI
    10.14912/jswmepac.19.0.278.0
  • Text Lang
    ja
  • Data Source
    • JaLC
    • CiNii Articles
  • Abstract License Flag
    Disallowed

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