A coolant for use in support of a pyrometallurgical furnace includes a circulating rich glycol solution. Substantially all the molecules of any initial weight of water it includes have been physically absorbed by a hygroscopic action into an initial weight of a glycol solvent. Substantially all the molecules of the initial weight of water included are suspended in solution between the molecules of a first portion of the initial weight of glycol solvent due to the hygroscopic action. A substantial remaining second portion of the initial weight of glycol solvent stays available to physically absorb any other water or steam that may later come in contact with the rich glycol solution as it circulates inside a desiccation containment vessel.
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