Ukusetyenziswa kunye nokubaluleka kweSodium Cyanide kwiNkqubo yeziMbiwa

Sodium i-cyanide, i-inorganic compound, idlala indima ebalulekileyo kwinkqubo yecyanidation ngaphakathi kweshishini lemigodi yegolide. Usetyenziso lwayo lwahlukeneyo kwaye lubalulekile ekutsalweni kweentsimbi ezixabisekileyo kwi-ore.

UkuLeaching kweGolide

Enye yezinto eziphambili zokusetyenziswa Isodium cyanide kukubiliswa kweentsimbi zegolide. Kule nkqubo, i-ore yegolide, emva kokutyunyuzwa kwaye igaywe ibe ngamaqhekeza amancinci, idityaniswe nesisombululo esinamanzi esiqulethe. Isodium cyanide. Ukusabela kweekhemikhali kwenzeka phakathi sodium cyanide kunye negolide kwintsimbi ekrwada, okukhokelela ekuyilweni kweeyoni zegolide zecyanide, ezithi zinyibilike kwisisombululo. Le nkqubo, eyaziwa ngokuba Ukukhutshwa kwe-cyanide, linyathelo elibalulekileyo neliyimfuneko ekuzuzeni igolide ekrwada. I-equation yekhemikhali yokusabela phakathi kwegolide, ioksijini, kunye nesodium cyanide kwisisombululo esinamanzi ingenziwa lula ngolu hlobo: 4Au + 8NaCN + O₂ + 2H₂O → 4Na[Au(CN)₂] + 4NaOH. Le ndlela yokusabela ivumela igolide, edla ngokubakho kwiindawo ezisezantsi kwintsimbi ekrwada, ukuba inyibilikiswe ngempumelelo kwaye yahlulwe kwezinye iiminerali.

Ukutsalwa kwegolide

Ukulandela inkqubo ye-cyanide leaching, isisombululo esiqulethe igolide enyibilikisiweyo siyaqokelelwa kwaye siphantsi konyango olungakumbi ukuze kuncitshiswe igolide. I-sodium cyanide isebenza njenge-precipitant kweli nqanaba. Isabela kunye ne-ion ye-chloride yegolide kwisisombululo sokwenza ii-complex zegolide ze-cyanide. Emva koko, iindlela ezahlukeneyo ziyasetyenziswa ukukhupha igolide kwezi zakhiwo. Enye indlela eqhelekileyo kukusetyenziswa kothuli lwezinc okanye ezinye izinto zokunciphisa. I-Zinc isusa igolide kwindawo yegolide yecyanide, ekhokelela kwimvula yentsimbi yegolide. Ukusabela kunokumelwa ngolu hlobo: 2Na[Au(CN)₂] + Zn → 2Au + Na₂[Zn(CN)₄]. Le nkqubo ivumela ukubuyiswa kwegolide ecocekileyo kwisisombululo se-leach.

UkuLeaching kwezinye iintsimbi zentsimbi

Ngaphaya kwegolide, i-sodium cyanide ikwafumana ukusetyenziswa kwi-leaching yezinye iintsimbi zentsimbi. Ngokomzekelo, kwimeko ye-ores yesilivere, emva kwe-cyanide leaching, i-sodium cyanide ingasetyenziselwa njenge-arhente yokukhupha i-precipitate yesilivere kwisisombululo. Iyafana ne Imveliso yegoliden inkqubo, iifom zesilivere ze-cyanide complexes phambi kwe-sodium cyanide. Ukusabela phakathi kwesilivere, i-sodium cyanide, kunye ne-oksijini kwisisombululo esinamanzi sifana negolide: 4Ag + 8NaCN + O₂ + 2H₂O → 4Na[Ag(CN)₂] + 4NaOH. Ezi zakhiwo zesilivere zecyanide zinokuphinda ziqhubekeke phambili ukufumana isilivere yesinyithi.

Ukuqukumbela, i-sodium cyanide yikhemikhali eyimfuneko kwi Ukulungiswa kwezimbiwa ishishini, ngakumbi ekutsalweni kweentsimbi ezixabisekileyo ezifana negolide nesilivere. Nangona kunjalo, kubalulekile ukuqaphela ukuba ngenxa yobume bayo obuyingozi kakhulu, ukhuseleko olungqongqo kunye neendlela zokukhusela okusingqongileyo kufuneka ziphunyezwe ngexesha lokusetyenziswa kwimisebenzi yemigodi ukukhusela nayiphi na ingozi kwimpilo yabantu kunye nokusingqongileyo.