Mit Steinwolle hergestelltes Papier.

摘要

Paper of the present invention made by using a slag wool comprises a slag wool in an amount of from 30 to 70 wt.% and the balance being pulp and incidental impurities. The slag wool is obtained by separating sludge from sewage, burning the separated sludge to obtain sludge ash, melting the resultant sludge ash to obtain a liquid sludge, and scattering the liquid sludge. The slag wool consists essentially of: phosphorus pentoxide (P2O5) : up to 30 wt.%, silicon dioxide (SiO2) : from 10 to 50 wt.%, aluminum oxide (A l 2O3) : from 3 to 20 wt.%, calcium oxide (CaO) : from 10 to 70 wt.%, magnesium oxide (MgO) : up to 20 wt.%, and iron oxide (Fe2O3) : from 5 to 25 wt.%. s