. Transactions . of operating, all four of the above-described phasesor steps of the process are conducted simultaneously. The move-ment of the charge is opposed in direction to that of the gases act-ing upon it, so that the process benefits by all the important advan-tages incident to that relation. Viewed from the standpoints of bothchemical and thermal efficiency, the energy of the gaseous reagentsis more completely absorbed. This system, like the former, may beapplied in several ways; here we shall undertake to describe twoplants, differing principally in the methods by which the solid fue
. Transactions . of operating, all four of the above-described phasesor steps of the process are conducted simultaneously. The move-ment of the charge is opposed in direction to that of the gases act-ing upon it, so that the process benefits by all the important advan-tages incident to that relation. Viewed from the standpoints of bothchemical and thermal efficiency, the energy of the gaseous reagentsis more completely absorbed. This system, like the former, may beapplied in several ways; here we shall undertake to describe twoplants, differing principally in the methods by which the solid fuelis supplied. First Plant.—Fig. 5 represents a furnace furnished with blast-tuyeres W for the drying- and calcining-chamber. If the ores donot require to be calcined, this chamber may be of smaller dimen-sions than those shown. It is provided with a gas-tight charging-hopper, through which passes a central off-take A for the waste-gases. 16 NEW PROCESS FOR PRODUCTION OF PIG-IRON, ETC. SECTION H I SECTION K LX Y. SECTION M N O R^ for the Continuous ProductionOF Pig-Iron. NEW PROCESS FOR PRODUCTION OF PIG-IRON, ETC. 17 The drying- and calcining-cliamber connects below with the re-ducing-chaniber, in which there are sev^eral duplex tuyeres, the innernozzles D2 supplying air-blast and the outer concentric ones supplyinggas. The bottom of the reducing-chamber is inclined toward themelting-chamber, and extends so far into it that the iron spongemay rest with its natural slope upon the bottom and not roll into theadjoining well of the melting-chamber. The chamber for solid fuelmerges into the melting-chamber, and connects with the reducing-chamber, as shown. It likewise is provided with a gas-tight charg-ing-hopper, through which the solid fuel is introduced. Themelting-chamber is fitted with blast-tuyeres Dj, a cinder-notch F,and a tap-hole. If the pig-iron is to be refined, the tap-hole isreplaced by a tymp-arch and a dam in immediate connection with therefining-chambe
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Keywords: ., bo, bookcentury1800, bookdecade1870, booksubjectmineralindustries
