Heat-generating mixture and device and method for heat generation

Abstract

A heat-generating mixture includes 40 to 55 wt % of metal silicide, 40 to 60 wt. % of iron (III) oxide, and 0 to 10 wt. % of silicon. On burning, the heat-generating mixture forms a non-melting, porous slag. In a method of heat generation, to generate heat, an igniter capable of being actuated mechanically or electrically, ignites a booster charge, which in turn ignites the heat-generating mixture. A device for heat generation incudes an igniter capable of being actuated mechanically or electrically, a booster charge and the heat-generating mixture fixed and/or contained in and/or on a casing.

1 . Heat-generating mixture, comprising 40 to 55 wt % of metal silicide, 40 to 60 wt. % of iron (III) oxide, and 0 to 10 wt. % of silicon, characterized in that it, on burning, it forms a non-melting, porous slag. 
     
     
         2 . Heat-generating mixture according to  claim 1 , characterized in that, on burning, it does not form a molten ball. 
     
     
         3 . Method of heat generation, characterized in that, to generate heat, an igniter capable of being actuated mechanically or electrically, ignites a booster charge, which in turn ignites a heat-generating mixture according to  claim 1 . 
     
     
         4 . Method of heat generation according to  claim 3 , characterized in that the igniter is actuated mechanically. 
     
     
         5 . Device for heat generation, characterized in that an igniter capable of being actuated mechanically or electrically,a booster charge and heat-generating mixture according to  claim 1  are fixed and/or contained in and/or on a casing. 
     
     
         6 . Device for heat generation according to  claim 5 , characterized in that the igniter is an anvil-shaped ignition cap capable of being actuated mechanically. 
     
     
         7 . A method for heating foodstuffs comprising actuating the device according to  claim 5 , and heating foodstuff with the actuated device. 
     
     
         8 . A method for heating foodstuffs comprising igniting the heat-generating mixture according to  claim 1 , and heating foodstuff with the ignited heat-generating mixture. 
     
     
         9 . Heat-generating mixture according to  claim 1 , further comprising silicon dioxide and/or water glass. 
     
     
         10 . Heat-generating mixture according to  claim 1 , characterized in that it contains 45-50 wt. % of metal silicide, 45-55 wt. % of iron (III) oxide, and 0 to 5 wt. % of silicon. 
     
     
         11 . Method of heat generation according to  claim 3 , characterized in that the ignition is capable of being actuated piezolectrically. 
     
     
         12 . Device for heating generation according to  claim 5 , characterized in that the ignition is capable of being actuated piezolectrically. 
     
     
         13 . Heat-generating mixture according to  claim 9 , characterized in that silicon dioxide is contained in an amount up 5 wt. %. 
     
     
         14 . Heat-generating mixture according to  claim 13 , characterized in that water glass is contained in an amount of up to 20 wt. %. 
     
     
         15 . Heat-generating mixture according to  claim 9 , characterized in that water glass is contained in an amount of up to 20 wt. %. 
     
     
         16 . Heat-generating mixture according to  claim 1 , characterized in that the metal silicide is calcium silicide and/or iron silicide. 
     
     
         17 . Heat-generating mixture according to  claim 1 , characterized in that the metal silicide is calcium silicide. 
     
     
         18 . Heat-generating mixture, comprising 40 to 55 wt % of iron silicide, 40 to 60 wt. % of iron (III) oxide, and 0 to 10 wt. % of silicon.