EP 4073006 A1 20221019 - METHOD FOR PRODUCING MINERAL WOOL
Title (en)
METHOD FOR PRODUCING MINERAL WOOL
Title (de)
VERFAHREN ZUR HERSTELLUNG VON MINERALWOLLE
Title (fr)
PROCEDE DE FABRICATION DE LAINE MINERALE
Publication
Application
Priority
- FR 1914152 A 20191211
- FR 2020052366 W 20201209
Abstract (en)
[origin: WO2021116609A1] The present invention relates to a method for producing mineral wool having a chemical composition, expressed as a percentage by weight of oxides, comprising: SiO2 30-50%, Al2O3 15-35%, CaO 5-25%, MgO 1-25%, Fe2O3 2-15%, and Na2O+K2O >10%, the method comprising the steps of: - providing a mixture of raw materials; - melting the mixture of raw materials to produce a melt; and - fiberising the molten material; characterised in that the raw material mixture comprises at least 8.5% by weight of a recycled raw material comprising at least 3% of magnesium, expressed by weight of oxides, the recycled raw material being essentially free of carbonates, and in that the mixture of raw materials is free of dolomite and magnesia.
IPC 8 full level
C03B 37/01 (2006.01); C03C 1/00 (2006.01); C03C 3/087 (2006.01); C03C 3/11 (2006.01); C03C 4/00 (2006.01); C03C 13/06 (2006.01)
CPC (source: EP US)
C03B 5/02 (2013.01 - US); C03B 5/2356 (2013.01 - US); C03B 37/04 (2013.01 - US); C03C 1/002 (2013.01 - EP US); C03C 3/087 (2013.01 - EP US); C03C 3/11 (2013.01 - EP); C03C 4/0014 (2013.01 - EP); C03C 13/06 (2013.01 - EP US); C03C 2213/00 (2013.01 - US); Y02P 40/50 (2015.11 - EP)
Citation (search report)
See references of WO 2021116609A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
WO 2021116609 A1 20210617; BR 112022010502 A2 20220906; EP 4073006 A1 20221019; FR 3104568 A1 20210618; FR 3104568 B1 20220722; JP 2023506446 A 20230216; US 2023057024 A1 20230223
DOCDB simple family (application)
FR 2020052366 W 20201209; BR 112022010502 A 20201209; EP 20842279 A 20201209; FR 1914152 A 20191211; JP 2022535503 A 20201209; US 202017784310 A 20201209