| 摘要 |
The invention relates to a process for cleansing soil polluted with toxic substances having a high temperature of evaporation, said soil being heated in a first rotating kiln (2, 3) to evaporate part of the toxic substances, subsequently is heated in a second kiln (10) of a fluid bed type to a higher temperature, partly using the combustion heat of the already liberated vapours after which the heated soil of the second kiln is supplied to the first kiln to raise the temperature of the soil present in the first kiln. Between the first and second kiln there can be a storage silo (9). |
