Electrochemical and metallurgical industry . Reducing Metals and Making 11. S. Hlaikumre,Ho_M53, 7 Applualion filed Aug. 22, 1004; Jan. (>, 1005. To produce an alloy of two metals from their oxides, of the oxides is dissolved and electrolyzed in asolvent f>f molten oxides of such metals as have greateraffinity for oxygen than the metals which shall form thealloy. For instance, for the productirdi of aluminiumalloys the solvent is a mixture of lilhitun oxide and cal-cium oxide in proporlir)n of four to one. This mixtureis fusetl by an alternating current. If the object
Electrochemical and metallurgical industry . Reducing Metals and Making 11. S. Hlaikumre,Ho_M53, 7 Applualion filed Aug. 22, 1004; Jan. (>, 1005. To produce an alloy of two metals from their oxides, of the oxides is dissolved and electrolyzed in asolvent f>f molten oxides of such metals as have greateraffinity for oxygen than the metals which shall form thealloy. For instance, for the productirdi of aluminiumalloys the solvent is a mixture of lilhitun oxide and cal-cium oxide in proporlir)n of four to one. This mixtureis fusetl by an alternating current. If the object is to pro-duce an alU)y of alumitiium with copper, copper alumiuateor copper oxide with aluminium oxide is added to themolten bath of calcium and lithium oxides and readily dis-solves. On electrolysis with flirect current a copperaluminium alloy is obtained. The alternating current forkeeping the mass in a molten state is passed through thecell in a path which is at an angle to the path of the directcurrent for the metal tlcposilion. .V Ap-. ElECTKIC IlKNACES. Induction Furnace.—F. A. Kjellin. 800,857. filed July 6. object is to protect the primary winding of an electricinduction furnace from the heat of the furnace construction is shown in I-ig. 2: a is the ljrickw(jrk, 1)the annular furnace cham-ber, c a central opening inthe brickwork, d the lami-nated iron core forming theclosed magnetic circuit, and cthe primary winding to whichthe electrical energy is sup-plied. In the central open-ing c between furnace cham-ber b and induction coil cthere are placed one or moreconcentric double-walled cas-ings, or jackets f of sheetiron: they do not form aclosed ring, but are dividedat one or more places byelectric insulating material g,to prevent the production ofinductive currents in thejacket. On both sides of theinterruption g tlie inlets hand outlets h for the cool-ing medium (air or water)are provided, so that it niaijacket. Production of Molded
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Keywords: ., bookcentury1900, bookdecade1900, booksubje, booksubjectmetallurgy
