Ukusetyenziswa kweCyanide kwiNkqubo yeGold Cyanidation

inkqubo he cyanidation lilitye lembombo ekutsalweni kwegolide ores yayo. Ukuqonda ukusetyenziswa kwe sodium cyanide ngexesha lale nkqubo ibalulekile ekuphuculeni ukusebenza kakuhle kunye nokunciphisa impembelelo yokusingqongileyo. Eli nqaku ligocagoca kwiindlela ezahlukeneyo ezinegalelo ekusetyenzisweni kwe Isodium cyanide kwi i-cyanidation yegolide inkqubo.

1. Ukuzidibanisa ngokuzenzekelayo

Sodium i-cyanide idlula kwi-autodecomposition ngexesha lenkqubo ye-cyanidation. Oku kubangela ukubunjwa kwe-carbonic acid, i-formic acid, kunye ne-ammonia. I-autodecomposition reactions inokuba nzima kwaye iphenjelelwa zizinto ezifana nobushushu, ukugxila, kunye nobukho bezinto ezithile.

2. I-Hydrolysis

I-Hydrolysis ye Isodium cyanide yenye indlela ebalulekileyo yokusetyenziswa. Impendulo phakathi kwamanzi kunye ne-sodium cyanide yile ilandelayo:

(H2O + NaCN HCN + NaOH)

I-Hydrogen cyanide (HCN), i-compound eguquguqukayo kunye netyhefu, iveliswa ngeli xesha le-hydrolysis. Isixa seHCN esiveliswe ngokusondeleyo sihambelana ne-alkalinity yesisombululo. Xa ixabiso le-pH ligcinwa kwi-12 okanye ngaphezulu, isisombululo se-cyanide sihlala sizinzile. Nangona kunjalo, izinto ezinokunciphisa ixabiso le-pH, njengekharbon diokside evela emoyeni, i-acids kumanzi okwakheka, i-divalent ions ye-magnesium (Umg2 +) kunye ne-trivalent ion aluminium (A13 +), kunye neeminerali ezahlukeneyo kwi-ore okanye kwimveliso ye-oxidation Iiminerali zeSulfidi, inokukhawulezisa ukusabela kwe-hydrolysis.

3. Ukwenziwa kweThiocyanate

I-sodium cyanide iphendula kunye neeminerali ze-sulfide ezifana nentsimbi, ubhedu, kunye ne-arsenic ukwenza ii-thiocyanate complexes. Ezi mpendulo ziguqula iiyoni ze-cyanide zibe ziintlobo ezingasebenziyo, ngokufanelekileyo ukunciphisa isixa se-cyanide yasimahla ekhoyo. ukutsalwa kwegolide. Ukwenziwa kwezi zintsonkothileyo ze-thiocyanate akunyusanga ukusetyenziswa kwe-cyanide kuphela kodwa kuchaphazela ukusebenza kakuhle kwenkqubo yegolide ye-cyanidation.

Ukuqonda ezi ndlela zokusetyenziswa kunika ulwazi oluxabisekileyo kubasebenzi kwishishini lemigodi yegolide. Ngokubeka iliso ngononophelo kunye nokulawula iimeko zenkqubo ye-cyanidation, kunokwenzeka ukunciphisa ukusetyenziswa kwe-cyanide, ukuphucula amazinga okubuyisela igolide, kunye nokunciphisa indawo yendalo yokusebenza kwemigodi yegolide.