| 摘要 |
PROBLEM TO BE SOLVED: To provide a treating method for asbestos which makes the treated product recylable stably without dumping the treated material, consuming a great quantity of energy or producing the material which is easy to react with water such as forsterite having a posibility of recrystallization to chrysotile. SOLUTION: The material containing Si, Ca and/or Al is added to and mixed with a material to be treated containing asbestos conforming to the following condition, and the obtained mixture is heat-treated at 400 deg.C to 1,200 deg.C. Addition conditions: The mol ratio of Mg to Si in the material to be treated is adjusted to Mg/Si<=0.5, and the mole ratio of Ca to Si is adjusted to 0.5<=Ca/Si<=2.0. When the mole ratio is Ca/Si>=1.3, the material containing Al is added so as to make Al2 O3 mass percentage >= ((Ca/Si)×0.357-0.464)×100. |
