| 摘要 |
The invention relates to an insulating material consisting of a mixture of pearlite and/or vermiculite granules, mica and an ash-containing material. An amount of 0.5 - 5.0 kgs of mica and 1.5 - 6.5 kgs of ash-containing material is admixed to an amount of 95 - 100 l of pearlite and/or vermiculite granules. The mixture is bound with 1 - 8 kgs of a binding agent. The invention furthermore relates to a method of producing an insulated duct, which is built up of two shells and an insulating material provided between the shells. The one shell is placed within the other shell and the space between the shells is filled with an insulating material, after which the binding agent is allowed to cure. |
