Laboratory plant study on the melting process of asbestos waste
- Kyoto Univ. (Japan). Environment Preservation Center
- Osaka Gas Engineering Co., Ltd., Osaka (Japan)
The melting process was studied as a method of changing asbestos into non-hazardous waste and recovering it as a reusable resource. In an initial effort, the thermal behaviors of asbestos waste in terms of physical and chemical structure have been studied. Then, 10 kg/h-scale laboratory plant experiments were carried out. By X-ray diffraction analysis, the thermal behaviors of sprayed-on asbestos waste revealed that chrysotile asbestos waste change in crystal structure at around 800 C, and becomes melted slag, mainly composed of magnesium silicate, at around 1,500 C. Laboratory plant experiments on the melting process of sprayed-on asbestos have shown that melted slag can be obtained. X-ray diffraction analysis of the melted slag revealed crystal structure change, and SEM analysis showed the slag to have a non-fibrous form. And more, TEM analysis proved the very high treatment efficiency of the process, that is, reduction of the asbestos content to 1/10{sup 6} as a weight basis. These analytical results indicate the effectiveness of the melting process for asbestos waste treatment.
- OSTI ID:
- 495375
- Report Number(s):
- CONF-9504119-; TRN: IM9731%%68
- Resource Relation:
- Conference: Air & Waste Management Association international speciality conference on thermal treatment and waste-to-energy technologies for solid waste management, Washington, DC (United States), 18-21 Apr 1995; Other Information: PBD: 1996; Related Information: Is Part Of Solid waste management: Thermal treatment and waste-to-energy technologies. VIP-53; Kilgroe, J.D. [comp.] [National Risk Management Research Lab., Research Triangle Park, NC (United States)]; PB: 981 p.
- Country of Publication:
- United States
- Language:
- English
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