*1 *2 *1 JIS A 14812008X TEM 950 TEM 1 2 3 4 JIS Development and Research of the Equipment for Conversion to Harmless Substances and Recycle of Asbestos with Superheated Steam Part 3 An evaluation with the TEM of the processing material and the cement raw materials Kouya SAWADA *1 Isao MIURA *1 Masatoshi HANDA *2 As means to confirm that there was not asbestos fiber to a detoxification disposal of construction materials containing asbestos, it has been performed by X-ray diffraction and the dispersion staining using the phase contrast microscope until now in conformity with JIS A 1481 (2008). However, it was notified that we confirmed it with a transmission electron microscope (TEM) to raise official approval sensitivity from Ministry of the Environment. In this report, We describe the result that the non-asbestos produces the cement which assumed the result that confirmed becoming it and a processing thing raw materials in TEM, and confirmed the compatibility as cement raw materials in overheat steam of 950 degrees Celsius atmosphere. The following results are obtained in this development. (1) The harmless treatment process was made clear by the scientific consideration related to the atmosphere of superheated steam. (2) The adequate conditions of the maximum temperature and the holding time of maximum temperature for the harmless treatment were evaluated by the fundamental experiments under the atmosphere of superheated steam. (3) The experiment using large size equipment developed for the harmless treatment of construction materials containing asbestos in large quantity was performed on the adequate conditions obtained above and the transformation to non-asbestos was sufficiently verified. (4) The non-asbestos construction materials obtained by the experiment described above were evaluated to be able to be used as the raw material of cement by the strength test based on Japanese Industrial Standards. *1 *2 *1 Technical Research Institute *2 Department of Research Planning and Management 4-1 4
*1 *1 *2 JIS A 14812008X TEM 950TEM 1 2 800 2.7μmOH 1,000 800 1 3 ADVANTEC [FUT542FB] W560 D360 H380 D1000 42 D950 *1 *2 4-2
4 X CaSiO 3 100 900 5 15 30 950 5 30 TEM 5 4.96kW 18 7 99 22 1 TEM 34 3 4 CASE AE 5 AC D JISA1481 3 TEM 0.5μm 0.05μm 3μm 3 EDS 4.0mm 8.6 10cm 1 10 5cm 2 900 950 5 30 EDS CASE A CASE B CASE C CASE D CASE E 4-3
5 TEM 900CASE A C 950 950 CASE D 900 950 5 15 30 5 30 CASE A 3 0 2 0 0 CASE B 1 0 0 0 0 CASE C 1 2 0 0 0 CASE D 67 123 45 1 1 CASE E 49 70 66 47 25 121 195 113 48 26 30t TEM 6 7 500 950 1 1 950 4kg/h 4m 3 /min 179kW 6 TEM 950 950 5 10kg/h 210kg/ 1 52kW 1 SEM 3 2 7 950 5 10 18 8.6 1 2.21 210kg 950 5 10 4-4
8 1 1 JIS R 52015202 AB 10 1400 3 TEM 8 950 5 A 150Mf/g 950 10 BC 950 10 9 A B 10 A JIS ALL PCM ALL PCM 5 150 A 950 10 5 B 950 10 5 C 950 10 ALL 0.5μm 0.05μm 3μm PCMPCM 5μm 0.2μm 3μm A49Mf/g B2Mf/g C150Mf/g SiO 2 Al 2O 3 Fe 2O 3 CaO MgO SO 3 Cl A 0.92 21.9 5.56 2.88 65.2 2.05 1.82 0.021 B 0.93 21.8 5.49 2.67 65.5 1.99 1.64 0.021 JIS 5 5 g/cm 3 cm 2 /g min 3.5 0.035 N/mm 2 h 3 7 28 A 3.19 4000 146 3.1 37.7 48.8 66.2 JIS 2500 60 10 12.5 22.5 42.5 4-5
1mg2mg 2mg Wistar 3 1 1 3 6 12 24 5 HO-1 2 1 2 3 4 JIS PJ 19 21 NEDO / 22 23 3 1 1 2008 2 2 2008 3 3 2009 4 4 2010 5 5TEM 2010 6 19 2008 7 20 2009 8 1 21 2010 9 2 21 2010 10 3 21 2010 11 2009.5 12T. Kozawa, A. Onda, K. Yanagisawa, O. Chiba, H. Ishiwata and T. Takanami, J. Ceram. Soc. Japan, 118, (2010) 4-6