@article{oai:nitech.repo.nii.ac.jp:00005369, author = {Hashimoto, Shinobu and Takeda, Hayami and Okuda, Atsushi and Kambayashi, Akira and Honda, Sawao and Iwamoto, Yuji and Fukuda, Koichiro}, issue = {1350}, journal = {Journal of the Ceramic Society of Japan}, month = {Feb}, note = {Industrial asbestos waste such as asbestos cement board, sprayed crocidolite and sprayed amosite was heated in a vacuum. The detoxification conditions were then established in reference to JIS A 1481: 2006 and JIS K 3850-1: 2006. When asbestos cement board was heated at 700℃ for 1h, detoxification of the cement board was completed. On the other hand, in the case of amphibolic asbestos waste, such as sprayed crocidolite and sprayed amosite, was heated, a phase-contrast microscope analysis was not applicable for identification of asbestos heated at more than 500℃. According to XRD analysis, crocidolite was eliminated by heating at 800℃ for 3h. Furthermore, amosite was not detected after heating at 700℃ for 3h. Finally, the grindability of heated amphibolic asbestos was investigated. When sprayed crocidolite was heated at 900℃ for 3h and then ground with a mortar for 300s, the crushed grains had a length of less than 5μm and an aspect ratio of 3. In addition, when sprayed amosite was heated at 1000℃ for 3h and then ground, the crushed grains had a length of less than 5μm and an aspect ratio of 3., application/pdf}, pages = {242--246}, title = {Detoxification of industrial asbestos waste by low-temperature heating in a vacuum}, volume = {116}, year = {2008} }