Investigation of low temperature decomposition process of asbestos using salts

Research Project

Project/Area Number	20510082
Research Category	Grant-in-Aid for Scientific Research (C)
Allocation Type	Single-year Grants
Section	一般
Research Field	Environmental technology/Environmental materials
Research Institution	Gunma National College of Technology
Principal Investigator	FUJISHIGE Masao Gunma National College of Technology, 物質工学科, 准教授 (70218999)
Co-Investigator(Kenkyū-buntansha)	KOJIMA Akira 群馬工業高等専門学校, 特任教授 (40042593)
Project Period (FY)	2008 – 2010
Project Status	Completed (Fiscal Year 2010)
Budget Amount *help	¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000) Fiscal Year 2010: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000) Fiscal Year 2009: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000) Fiscal Year 2008: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Keywords	スベスト / アスベスト廃棄物 / アスベストの分解 / 低温分解 / アスベスト / クリソタイル / アスベストの低温分解 / アスベストの迅速分解 / アスベストの急速分解 / アスベスト廃棄物の再資源化 / アスベストの無害化 / アスベストの非繊維化
Research Abstract	The decomposition process of cement-asbestos composites when a small amount of salt is added was investigated. The most effective additive, CaCl_2, makes recycling of decomposed products into raw materials for cement difficult due to increase in Cl content from formation of Ca_2SiO_4・CaCl_2. The compound was synthesized and thermal properties were measured. Removal of Cl content in the actual processed material was difficult, thus we investigated decomposition additives without Cl content and methods to reduce processing time.