Metallar rudalardan kimyoviy qaytarish yoki elektrokimyoviy qaytarish yiki elektroliz usulida olinadi.
Mis metallini ajratib olishning istiqbolli gidrometallurgiya texnologiyalardan biri eritmadagi ionlaridan metallni ajratib olish. Qaytaruvchi sifatida H2 yoki temir qirrindisi olinadi. Sifati past bo’lgan ruda tarkibidan Cu2+ ioni kislota yoki bakteriyalar ta’sirida ajratib olinadi va vodorod bilan qaytariladi.
Cu2+ (aq)+H2(g)=Cu(q)+2H+(aq)
Qaytaruvchi sifatida Fe ham ishlatish mumkin. Usul ekologik xafvsiz va mis miqdori kam bo’lgan rudani ishlatish imkoniyatini beradi. Suvdan vodorod va kislorod olishda ham elektroliz jarayonida membranalarni ishlatish orqali vodorod va kislorod ajratiladi(7.1-rasm).
Domna pechida ruda (Fe2O3 va Fe3O4) , koks va ohaktosh(CaCO3)issiq havo oqimi bilan qizdiriladi. Koksning havoda yonishi nyufayli harorat 2000 os gacha ko’tarildai. Past qatlamlardagi uglerod mono oksidgacha yonadi. Uyqoridan solinadigan Fe2O3 issiq CO bilan Fe3O4 , so’ngra FeO gacha qaytariladi.Temirning oxirgi qaytarilishi 1000-1200 gacha domna markazida amalga oshadi(7.3-rasm):
FeO(q)+CO(g)=Fe(q)+CO2(g)
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)
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