Ukusetshenziswa kwe-Cyanide kuNqubo Yegolide Ye-Cyanidation

Inqubo ye-cyanidation iyisisekelo sokukhishwa kwegolide ematsheni ayo. Ukuqonda ukusetshenziswa kwe -sodium cyanide phakathi nale nqubo kubalulekile ekwenzeni ngcono ukusebenza kahle kanye nokunciphisa umthelela emvelweni. Lesi sihloko sihlola izindlela ezahlukene ezifaka isandla ekusetshenzisweni kwe- Sodium Cyanide enqubweni ye -gold cyanidation.

1. Ukubola okuzenzakalelayo

I-sodium cyanide ibola ngokuzenzakalelayo ngesikhathi senqubo ye-cyanidation. Lokhu kuphumela ekwakhekeni kwe-carbonic acid, i-formic acid, kanye ne-ammonia. Ukusabela kwe-autocomposition kungaba yinkimbinkimbi futhi kuthonywa yizici ezifana nokushisa, ukuhlushwa, kanye nokuba khona kwama-catalyst athile.

2. I-Hydrolysis

I-Hydrolysis ye -Sodium cyanide ingenye indlela ebalulekile yokusebenzisa. Ukusabela phakathi kwamanzi ne-sodium cyanide kungokulandelayo:

( H2O + NaCN HCN + NaOH )

I-hydrogen cyanide (HCN), i-compound eguquguqukayo kakhulu futhi enobuthi, ikhiqizwa phakathi nalokhu kuchithwa kwe-hydrolysis. Inani le-HCN elikhiqizwayo lihlobene eduze ne-alkalinity yesisombululo. Uma inani le-pH ligcinwa ku-12 noma ngaphezulu, isixazululo se-cyanide sihlala sizinzile. Kodwa-ke, izinto ezinganciphisa inani le-pH, njenge-carbon dioxide emoyeni, ama-acid emanzini okwakheka, ama-ion e-magnesium ahlukene ( Mg2+ ) kanye nama-ion e-aluminium ahlukene ( A13+ ), kanye namaminerali ahlukahlukene emikhiqizweni ye-ore noma ye-oxidation yamaminerali e-sulfide , angasheshisa ukusabela kwe-hydrolysis.

3. Ukwakhiwa kweThiocyanate

I-sodium cyanide isabela namaminerali e-sulfide njengensimbi, ithusi, kanye ne-arsenic ukuze yakhe ama-complex e-thiocyanate. Lokhu kusabela kuguqula ama-ion e-cyanide abe izinhlobo ezingasabeli kahle, kunciphisa ngempumelelo inani le-cyanide yamahhala etholakalayo yokukhishwa kwegolide . Ukwakheka kwala ma-complex e-thiocyanate akugcini nje ngokwandisa ukusetshenziswa kwe-cyanide kodwa futhi kuthinta ukusebenza kahle kwenqubo ye-cyanidation yegolide.

Ukuqonda lezi zindlela zokusetshenziswa kunikeza imininingwane ebalulekile kubasebenzisi embonini yezimayini zegolide. Ngokuqapha nokulawula ngokucophelela izimo zenqubo ye-cyanidation, kungenzeka ukunciphisa ukusetshenziswa kwe-cyanide, ukuthuthukisa amazinga okuthola igolide, nokunciphisa indawo yemvelo yokusebenza kwezimayini zegolide.