Tikudziwa kuti Mgodi wa Copper wa ku Congo (Gold) uli ndi nkhokwe zambiri padziko lonse lapansi.Mwala wake wamkuwa umakhala ndi cobalt wopangidwa ndi okosijeni pamtunda.Pankhani ya ndalama zochulukirachulukira, zotsatira za kuyenga mkuwa wonyowa zawonjezeka kwambiri.
Dongosolo lonyowa la Congo (Gold) Copper nthawi zambiri ndi "ore leaching- extraction- electrodeposition".Panthawi yomiza mkuwa, sulfure dioxide kapena sodium sulphate amagwiritsidwa ntchito ngati kuchepetsa kumiza cobalt.Njira ya sulfuric acid yomwe ili ndi cobalt yamkuwa imapanga mkuwa wa cathode pambuyo pochotsa mkuwa.
Chifukwa maziko a mafakitale am'deralo ndi ofooka kwambiri, kupatulapo asidi wa sulfuric, kwenikweni zida zonse zothandizira mafakitale ziyenera kutumizidwa kunja.Pofuna kupulumutsa ndalama, zinthu zambiri za cobalt zomwe zimapangidwa m'derali zimapangidwa ndi ndondomeko yomwe ili pamwambayi.Mankhwala omwe amapezeka kwambiri a cobalt ndi kugwiritsa ntchito sodium carbonate cobalt kupanga cobalt carbonate.Komabe, cobalt otsika mu akhakula cobalt carbonate ndi otsika, ambiri amene ali pafupifupi 25%, kuonjezera mtengo mayendedwe ndi ndalama zina, ndi sodium carbonate cobalt muli wambirimbiri mchere sodium kuti n'zovuta kuthana nazo.Kutulutsa kwachindunji kungayambitse kuwonongeka kwa chilengedwe, komanso kuwononga chilengedwe.Ngati imagwiritsidwa ntchito mu dongosolo kwa nthawi yayitali, imayambitsa ayoni wambiri wa sodium mu yankho, zomwe zingakhudze kwambiri kupanga mkuwa.Pomwe ndondomeko zoteteza chilengedwe zimakhazikika pang'onopang'ono, makampani angapo ayamba kuphunzira njira zopangira ndalama komanso zachilengedwe zopangira cobalt.Magnesium oxideukadaulo wozama wa cobalt ndi amodzi mwa mayendedwe.
Poyang'ana ku Congo (Gold) m'mafakitale osungunula onyowa, cobalt - okhala ndi zakumwa zamkuwa zotulutsa mkuwa mu cobalt, ndi zakumwa zakumbuyo zochotsa, zotsatira za magnesium oxide ndi cobalt pansi pazikhalidwe zosiyanasiyana zidaphunziridwa.Pafupifupi maola anayi, mapeto a pH mtengo ndi 8.0, ndipo mphamvu yozama ya cobalt imagwiritsidwa ntchito ndi magnesium oxide zamkati.Mankhwala a cobalt hydroxide ndi apamwamba kuposa 36%, kuchira kwa cobalt ndi kwakukulu kuposa 99%, ndipo kugwiritsa ntchito kwa magnesium oxide kumatha kufika 91%.
Kubwezeretsanso zitsulo za cobalt kuchokera mu njira ya cobalt sulfate nthawi zambiri kumatenga kuwonjezera phala la magnesium oxide kuti lipange zinthu za cobalt hydroxide.Kaya kuchuluka kwa phala la magnesium oxide kumakhazikika.Kuwonjezeka kwa zonyansa muzinthu zomwe zimakhudza ubwino wa mankhwalawo, komanso kuchepa kwa magnesium oxide paste kumayambitsa kuchepa kwa cobalt.
Nthawi yotumiza: Dec-13-2022