Rockwool International has filed a patent for a method using a plasma torch in a cupola furnace to prepare a mineral melt. The process involves specific temperature zones, carrier gases, and exclusion of water above 750°C to reduce NOx and hydrogen in the off-gas. GlobalData’s report on Rockwool International gives a 360-degree view of the company including its patenting strategy. Buy the report here.
According to GlobalData’s company profile on Rockwool International, Structure Building Framework was a key innovation area identified from patents. Rockwool International's grant share as of January 2024 was 55%. Grant share is based on the ratio of number of grants to total number of patents.
Method for preparing mineral melt in cupola furnace using plasma torch
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A patent application (Publication Number: US20240018028A1) describes a process for preparing a mineral melt in a cupola furnace with specific temperature zones and equipment. The process involves using a plasma torch for heating, excluding water above 750°C, and producing off-gas. The patent claims that over 50% of the heating energy is provided by the plasma torch, with variations in temperature zones and compositions of the mineral melt. Additionally, the process aims to reduce the emission of NOx and hydrogen in the off-gas, with specific limits mentioned in the claims.
Furthermore, the patent application includes claims related to the percentage of heating energy provided by the plasma torch, temperature limits in different zones, carrier gas composition, and the composition of the mineral melt. It also covers the manufacturing of man-made vitreous fiber using the described process, a cupola furnace designed for this process, and the use of a plasma torch to reduce emissions in the off-gas. The claims provide detailed specifications for the process, equipment, and outcomes, emphasizing the use of plasma torch technology for efficient mineral melt preparation and emission control in cupola furnaces.
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