Raw material briquette for mineral wool production and process for its preparation and its use
AssigneeParoc Oy AB
InventorsBob Lars O. Talling, Mariana Sarudis
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Abstract
The invention concerns a raw material briquette for mineral wool production containing a mineral raw material as well as a binder therefor. The invention is characterized in that the briquette, as the binder, contains slag which has been activated with an alkaline agent, such as with an alkalimetal compound. The invention also concerns a process for the preparation of the briquette as well as a process for the preparation of mineral fibres using the briquette according to the invention.
Claims14
Raw material briquette for mineral wool production containing a mineral raw material, and a binder, the binder consisting essentially of granulated and finely divided blast furnace slag which has been activated with an alkaline alkali metal compound and an accelerator selected from the group consisting of CaO, Ca(OH).sub.2, and portland cement clinker.
Process for the production of a raw material briquette for a mineral wood production, comprising adding an alkaline alkali metal compound to slag to form a binder consisting essentially of slag activated by the alkaline alkali metal compound, adding an accelerator selected from the group consisting of CaO, Ca(OH).sub.2, and portland cement clinker, mixing mineral raw material with the binder and water into a mixture, shaping the mixture into briquettes, and hardening the briquettes.
Process for mineral wool production, comprising adding mineral raw material in the form of briquettes to a melting furnace, withdrawing a formed melt from the melting furnace and fiberizing the formed melt, the briquettes including a binder containing slag activated with an alkaline alkali metal compound and an accelerator selected from the group consisting of CaO, Ca(OH).sub.2, and portland cement clinker.
Dependencies are inferred from the claim text.