Chemical engineering . eam in the usual manner, and copper oxide, cop-per scale or similar material added, which dissolves rapidly,any cuprous oxide being entirely brought into solution be- 44 ELECTROCHEMICAL AND METALLURGICAL IXDUSTRV. [Voi, HI W 4 cause of the presence of ferric sulphate. The slimc to betreated is then added, when these reactions take place quicklv:C« + FcUSO.). = CuSO. + + Fc.(SO.). = PbSO. + 2FcSO. jAs + jH,0 + 3Fc=(SO.), — AsjO. + 6FeSO. + + jHsO + 3Fc:(SO.), = Sb,0. + 6FeSO. + + jH,0 + .?FeaSO.). = Bi,0. -f 6FeSO. + 3H,\g + Fe,(SO.). =
Chemical engineering . eam in the usual manner, and copper oxide, cop-per scale or similar material added, which dissolves rapidly,any cuprous oxide being entirely brought into solution be- 44 ELECTROCHEMICAL AND METALLURGICAL IXDUSTRV. [Voi, HI W 4 cause of the presence of ferric sulphate. The slimc to betreated is then added, when these reactions take place quicklv:C« + FcUSO.). = CuSO. + + Fc.(SO.). = PbSO. + 2FcSO. jAs + jH,0 + 3Fc=(SO.), — AsjO. + 6FeSO. + + jHsO + 3Fc:(SO.), = Sb,0. + 6FeSO. + + jH,0 + .?FeaSO.). = Bi,0. -f 6FeSO. + 3H,\g + Fe,(SO.). = 4- aFeSO. It will be noticed from the reactions that acid is set freein the oxidation of arsenic, antimony and bismuth. Thisacid will be neutralized in the same way with copper oxidejust before the next treatment, in order that the process may Tnral with frrri* rolphatr •«aolTr« oat coppvr aoil * AatlmoBx, IrttJ aoil Kzlract nitor-prvMedUld wmkhrd fmUd*•Ilk dilute HF+HtSOt. \I o«Id» J Add CuO to aoliitiou and cloctrolyio for vlrctrolyllc copper and frrric lalphnto. Crystaliio oat AtyOs If I •to J Eirctrolyio SbF, lolotlonfor antimonT and rrffrncratlon of hydrofluoric ocij.
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectmetallu, bookyear1902
