Method and device for treating fibrous material, particularly waste inorganic wool, comprising fibres and foreign matter

摘要

Process for refining fibrous material, esp. mineral wool contg. fibrous and foreign objects, entails a first stage (1) where the fibrous material (50) is reduced in size; separation of fine- grained foreign objects by sieving and sorting; a second size reduction stage (15) for the fibrous objects and; separation of non-magnetic foreign objects by sieving and sorting. Also claimed is appts. implementing the process where, in the first stage, there is, for breaking up material initially, a device with inlet (2) and outlet (3) to which is connected a first sieving device (11) for removal of the fine-grained foreign objects, a second reduction device with inlet (14) for collection of the overflow from the first sieving device and an outlet (16) connected to which a second sieving device (17) takes the reduction device's product.