Patent ID: 8992822
Filing Date: 2015-03-31
Classification: F27B,F27D

Abstract:
1. A method for cooling a metallurgical furnace, comprising: flowing a cooling medium through at least one cooling element of the metallurgical furnace, wherein the cooling medium contains at least one ionic liquid carried through the cooling element, and wherein the ionic liquid contains a salt that is liquid at a temperature below 100° C. without being dissolved in water and selected from the group consisting of compounds containing phosphorus, boron, silicon and/or metals; compounds containing at least one cation selected from the group consisting of alkylated cations, imidazolium, pyridinium, pyrrolidinium, guanidinium, uronium, thiouronium, piperidinium, morpholinium, ammonium and phosphonium; and compounds containing at least one cation selected from the group consisting of sulphate-derivatives, phosphate-derivates, halogenides, fluorinated anions, tetrafluoroborate, hexafluoroborate, trifluoroacetate, trifluoromethane sulfonate, hexafluorophosphate, sulfonates, phosphinates or tosylates, imides and amides.