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Development of the quick decomposition technology of the sprayed-on asbestos by the electromagnetic wave heating method

电磁波加热法喷涂石棉快速分解技术的开发

基本信息

批准号：
18310066
负责人：
KOJIMA Akira
金额：
$ 9.64万
依托单位：
Gunma National College of Technology
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B)
财政年份：
2006
资助国家：
日本
起止时间：
2006 至 2007
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-18310066/
关键词：
low temperature decomposition of asbestos molten detoxification of asbestos the quick decomposition of asbestos electromagnetic wave heating disposal of asbestos アスベストの低温分解 asbestos decomposition of asbestos melt formation of CaCO_3-CaO-CaCl

项目摘要

1. Asbestos in the cement, calcium chloride and asbestos mixture were decomposed quickly by the electromagnetic wave heating methodThe temperature of the sample was not able to measure directly, but it was measured with an optical pyrometer by the loss of the crucible for a microwave oven upper part, and about 1, 300 degrees Celsius were shown in the temperature. In coordination with quantity of addition of the calcium chloride, yes or no of the asbestos origin fiber of burnt samples was observed. The burnt sample was washed in the pH 5 aceta which coordinated in buffer solution after it was crushed. Furthermore, the washed fluid was filtered by the men buran filter of the 0.2μm aperture diameter, and the microscopy of dregs was performed.The fiber was not observed in the case of 5wt% quantity of calcium chloride addition, but form of six fiber thing was observed during ten places of observation without it being done vitrifaction in the case of quantity of calcium chloride addition 12. … More 5wt%. Thermometry was difficult so that a gaseous thing grew at the time of heating. From this, it is supposed so that calcium chloride and the volatile of cement evaporate, and the evaporation latent heat is robbed of it when the fusion of the sample was not generated.2. The quick decomposition of sprayed-on asbestosFor the quick decomposition such as sprayed-on asbestos or the slate, the cut glass which occurred at the time of cutting of the slate as a sample was examined. Asbestos disperses with form of cotton, form of lump in a sample, and they coexist with cement. When 0.5wt% added calcium chloride in this slate cut glass, a vitreosity product was provided. Furthermore, fiber was not detected in the acetic acid dissolution dregs by the observation of the 10 field of vision. The electromagnetic wave heating method is thought with prospective technology because processing time is short. But because it is the test result of the very small scale, the calculation for large sized facilities is difficult. Less

1.用电磁波加热法快速分解水泥、氯化钙和石棉混合物中的石棉，样品的温度不能直接测量，但用光学高温计通过微波炉上部坩埚的损耗测量，显示温度约为1300 ℃。配合氯化钙的加入量，观察到燃烧样品中有或没有石棉来源的纤维。燃烧后的样品粉碎后用pH5的乙酸洗涤，在缓冲溶液中配位。此外，用孔径为0.2μm的门布兰过滤器过滤洗涤液，并对残渣进行显微镜检查。在氯化钙添加量为5wt%的情况下，未观察到纤维，但在氯化钙添加量为12的情况下，在10个观察位置观察到6个纤维物的形式，而没有进行玻璃化。 ...更多信息 5wt%。温度测量是困难的，因此在加热时会产生气体。由此推测，氯化钙和水泥的挥发分在试样未发生熔融时蒸发，蒸发潜热被剥夺.喷涂石棉的快速分解对于快速分解，如喷涂石棉或石板，在切割石板时产生的切割玻璃作为样品进行了检查。砷化物在样品中以棉状、块状分散，与水泥共存。当在该石板切割玻璃中添加0.5wt%的氯化钙时，提供玻璃质产品。此外，通过10视野的观察，在乙酸溶解残渣中未检测到纤维。电磁波加热法由于加工时间短，被认为是一种有前景的技术.但由于是小尺度的试验结果，对大型设备的计算比较困难。少