Siyazi ukuba iCongo (iGold) yeCopper Mine inowona vimba ubuninzi emhlabeni.Intsimbi yayo yobhedu ikakhulu yicobalt yobhedu edityaniswe phezulu.Ngokubhekiselele kutyalo-mali olungakumbi nangakumbi, imveliso yokusulungekiswa kobhedu olumanzi iye yanda ngakumbi.
Inkqubo yemveliso emanzi yaseCongo (Gold) Ubhedu luqhelekile "i-ore leaching- extraction- electrodeposition".Ngethuba lenkqubo yokucwiliswa kobhedu, i-sulfure dioxide okanye i-sodium sulfate isetyenziswe njenge-agent yokunciphisa ukuntywilisela i-cobalt.Isisombululo se-sulfuric acid esine-cobalt yethusi sivelisa ubhedu lwe-cathode emva kokukhutshwa kobhedu.
Ngenxa yokuba isiseko seshishini lendawo sibuthathaka kakhulu, ngaphandle kwe-asidi yesulfuric, ngokusisiseko zonke izinto ezincedisayo kwishishini kufuneka zingeniswe ngaphandle.Ukuze kugcinwe iindleko, ininzi yeemveliso ze-cobalt eziveliswa kwindawo yendawo zininzi zenziwe yinkqubo engentla.Iikhompawundi ze-cobalt eziqhelekileyo eziqhelekileyo kukusetyenziswa kwe-sodium carbonate cobalt ukuvelisa i-cobalt carbonate.Nangona kunjalo, i-cobalt ephantsi kwi-cobalt carbonate iphantsi, ininzi yayo malunga ne-25%, inyusa iindleko zokuthutha kunye nezinye iindleko, kwaye i-sodium carbonate cobalt iqulethe ityuwa enkulu ye-sodium enzima ukujongana nayo.Ukukhutshwa okuthe ngqo kuya kubangela ukungcoliseka kwendalo, kwaye ngelixa kuya kubangela ukungcoliseka kwendalo.Ukuba isetyenziswe kwinkqubo ixesha elide, iya kubangela isixa esikhulu se-sodium ions kwisisombululo, esiya kuchaphazela kakhulu ukuveliswa kobhedu.Njengoko imigaqo-nkqubo yendawo yokusingqongileyo ingqongqo ngokuthe ngcembe, iinkampani ezininzi sele ziqalisile ukufunda iinkqubo zokuvelisa icobalt ezinoqoqosho kunye nokusingqongileyo.I-Magnesium oxideitekhnoloji ye-cobalt yokucwila yenye yeendlela.
Ijolise kwiCongo (iGold) yeefektri zokunyibilikisa ezimanzi zasekuhlaleni, i-cobalt-equlethe ulwelo lobhedu oluxutywayo kwi-cobalt, kunye nolwelo lokususa ngasemva, umphumo we-magnesium oxide kunye ne-cobalt phantsi kweemeko ezahlukeneyo zafundwa.Malunga neeyure ezine, ixabiso lokugqibela le-pH liyi-8.0, kunye nesiphumo sokucwila kwe-cobalt sisetyenziswa kunye ne-magnesium oxide pulp.Imveliso ye-cobalt hydroxide iphezulu kune-36%, izinga lokubuyisela i-cobalt likhulu kune-99%, kwaye izinga lokusetyenziswa kwe-magnesium oxide linokufikelela kwi-91%.
Ukurisayikilisha iintsimbi ze-cobalt ukusuka kwinkqubo yesisombululo se-cobalt sulfate ngokuqhelekileyo kuthatha ukongeza intlama ye-magnesium oxide ukuvelisa iimveliso ze-cobalt hydroxide.Ingaba i-concentration ye-magnesium oxide paste igcinwa izinzile.Ukunyuka kokungcola kwiimveliso, ezichaphazela umgangatho wemveliso, kunye nokuxinwa okuphantsi kwe-magnesium oxide paste kuya kubangela ukuhla kwe-cobalt recycling.
Ixesha lokuposa: Dec-13-2022