Molten salt destruction of composite materials

Details Molten salt destruction of composite materials Molten salt destruction of composite materials

A - Human Necessities

62

D

A62D 3/32 (2007.01) A62D 3/38 (2007.01) B09B 3/00 (2006.01) F23G 7/00 (2006.01) A62D 3/00 (2006.01)

Patent

CA 2140822

A process for destruction of composite materials capable of oxidation in a molten salt such as graphite fiber reinforced epoxy materials, comprising introducing such composite materials into a molten salt bath, e.g. molten sodium carbonate, at elevated temperature, e.g. between about 900 and 1000°C, together with air or oxygen, and catalytically oxidizing and destroying the composite material and recovering an off-gas containing chiefly CO2. When employing composites containing ceramic material such as silicon, as for example silicon carbide fiber reinforced carbon matrix, the silicon is converted to a silicate as a spent salt retained in the molten salt bath, while the carbon is converted to CO2.

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