. Mixed metals, or, Metallic alloys . Fig. 14. Fig. 15. through the hopper D. The gas passes up the pipe E, whichis cased with iron, and issues into a horizontal wrought-ironpipe, which conveys it to the regenerator, where it is highlyheated before entering the furnace in whicli it is burnt, thusproducing a much higher temperatiue. The waste heat ofthe furnace is not lost, but utilised in heating the arrangement of a Siemenss crucible furnace is shownin Fig. 15, where the pots are heated by the combustionof hot gas and hot air. The regenerators are chambersof open refractory b
. Mixed metals, or, Metallic alloys . Fig. 14. Fig. 15. through the hopper D. The gas passes up the pipe E, whichis cased with iron, and issues into a horizontal wrought-ironpipe, which conveys it to the regenerator, where it is highlyheated before entering the furnace in whicli it is burnt, thusproducing a much higher temperatiue. The waste heat ofthe furnace is not lost, but utilised in heating the arrangement of a Siemenss crucible furnace is shownin Fig. 15, where the pots are heated by the combustionof hot gas and hot air. The regenerators are chambersof open refractory brickwork, built in pairs, two pairs beingrequired for each furnace; each pair being used alternatelyfor absorbing the heat of the gaseous products from thefurnace, and heating the gas and air required for com-bustion. By means of a reversing valve, the waste gases 134 MIXED METALS puss to the right or left pair at Avill. When the waste gasesare passing down through the right pair, the cold air andproducer gas are passing up through t
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