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US 4,287,142 AGranted
Process for the production of mineral wool products
AssigneeRockwool International A/S
InventorKjeld Holbek
Life of this patent
Estimating the term…
Abstract
A process for the production of mineral wool products comprising admixing fine starting materials, a hydraulic binder, and an inorganic material containing at least 75% SiO.sub.2 and having an average particle size of less than 100 .mu.m to form a mouldable mixture, moulding the mixture to form briquettes, heating the briquettes to a temperature sufficiently high to form a melt and converting the melt thus formed into a mineral wool product.
Claims7
A process for the production of mineral wool products which comprises the steps of
- (1) mixing together the following components:
- a finely divided mineral-containing material, a hydraulic binder, an inorganic material containing at least 75% by weight of SiO.sub.2 and being in the form of particles having an average size of less than 100 .mu.m, and a waste material recycled from step (4),
- (2) moulding the mixed components of step (1) to form briquettes,
- (3) heating the briquettes of step (2) to a temperature sufficient to form a melt,
- (4) spinning the melt of step (3) to form mineral wool and a waste material mainly consisting of unfiberized particles of mineral wool, and
- (5) recycling said waste material of step (4) to the mixture of step (1).
3 more elements
Dependencies are inferred from the claim text.