Kazhinji, goridhe hariwanikwe zvakananga. Asi, dombo rinopwanywa kuti ribudise goridhe, iro rinozosangana ne Sodium Cyanide muitiro unonzi cyanidation. Maitiro acho anoratidzwa nekuita kwemakemikari kunotevera: Mushure mekunge simbi (NaAu(CN)2) yagadzirwa, activated kabhoni zvichatora goridhe cyanide complex kubva parwizi rune goridhe (doro rine mimba).
4 Au + 8(NaCN) + O2 + H2O = 4 NaAu(CN)2 + 4 NaOH
Dhayagiramu iri pamusoro inoratidza goridhe KUBVISA on mapuratifomu egirafiti ekabhoni akagadzirwaNdarama yega hainyungudike, uye haizonyungudutswi nyore nyore nekabhoni yakakangwa kusvika yatsvukira, yoita goridhe-cyanide complex yekubatanidza inonzi dicyanoaurate. Ndiyo iyi gold-cyanide complex inokwezvwa nenzvimbo yakakura inowanikwa pa activated carbon, zvichibvumira mhando dzakasiyana dze nzira dzekupora.
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