Izinto Eziningana Okufanele Uzazi NgeGold Cyanidation

I-Gold cyanidation iyindlela yokukhipha igolide kusetshenziswa i-cyanide njenge-leaching agent. Ngenxa yezinga layo lobuchwepheshe elivuthiwe, izinga eliphezulu lokukhuculula, kanye nokusebenza okunamandla kuma-ore, indlela ye-cyanidation isalokhu ingenye yezindlela eziyinhloko zokukhipha igolide okwamanje. Enqubweni ye -Gold cyanidation , isinyathelo ngasinye kumele silawulwe ukuqinisekisa izinzuzo ezinhle zomnotho ngenkathi kunciphisa isisindo semishini kanye nokutshalwa kwezimali.

1. I-Aeration kanye ne-Cyanide Addition

Ngemuva kokugaya, i-cyanide yengezwa ku-pulp ukuze ichithe igolide futhi yakha izakhiwo zensimbi. Indlela yokusabela imi kanje: 4Au + 8NaCN + O2 + 2H2O → 4NaAu(CN)2 + 4NaOH. Njengoba kungabonakala kufomula engenhla, i-oxygen iyadingeka lapho kucwiliswa igolide. Ngakho-ke, ekukhiqizweni kwezimboni, ithangi le-leaching lidinga ukushaywa umoya. Umfutho wokungena komoya ngokuvamile ucishe ube ngu-1 kg, futhi ivolumu yokungenisa umoya ngomzuzu ku-cubic meter ngayinye ye-slurry inkulu kuno-0.002 m³.

2. Ukwengeza i-Alkali Evikelayo

Ukuqinisekisa ukugcwala kwe-cyanide ku-pulp, ukugwema ukungcoliswa kwemvelo, futhi uvimbele ukukhiqizwa kwegesi enobuthi ye-hydrogen cyanide (HCN), i-alkali kufanele yengezwe ethangini lokuvuza ukuze kugcinwe inani eliphezulu le-pH le-pulp. Ubisi lwe-lime noma lwe-lime luvame ukusetshenziswa ekukhiqizeni izimboni, futhi ngezinye izikhathi i-NaOH yengezwa ukuze kulungiswe okungeziwe.

3. Ukugcina I-Slurry Suspension

Inqubo yegolide ye-cyanidation inezidingo ezithile zokusebenza kwethangi elinyakazayo le-leaching. Ngokusetshenziswa kwamandla okuphansi, izinhlayiya zegolide elingaphezulu elihlukaniswe nge-monomer noma eliveziwe ku-pulp akufanele zidiphoze ethangini. I-pulp, i-cyanide, i-lime, nomoya kufanele kuhlanganiswe ngokugcwele ethangini ukuze kufinyelele esimweni sokumiswa. Ukugxila kwe-slurry engxenyeni ngayinye yethangi kufanele kuhambisane, futhi akumele kube nokuhlelwa eduze nendawo ejulile yethangi, futhi ukusabalalisa usayizi wezinhlayiyana kufanele kufane.

4. Ukugcina I-Slurry Concentration Efanelekile

Lapho ukuminyana kwe-ore yegolide kungu-2.65 - 2.8. ukugxila okujwayelekile kwe-pulp leaching kungu-40 - 45%. Lapho ukuminyana kokugxila kwe-flotation kungu-3 - 3.5. ukugxila okujwayelekile kwe-leaching kungu-30 - 40%. Ngokuvamile, izinto zokwakha ezine-fineness ezingaphansi kuka-200 zenza i-80 - 95%.

5. Ukunciphisa Ukuguga Nomsindo Wezingxenye Ezinyakazayo

Ukuze unciphise ukuguga kwe-agitator futhi ukwandise impilo yayo yesevisi, ama-impellers amaningi ekukhiqizeni izimboni ane-raber-lined. Ukukhethwa kwedivaysi yokudlulisela kufanele kucophelele ukuze kuqinisekiswe ukusebenza kahle kokudlulisela phambili kanye nomsindo ophansi.

6. Ukunciphisa Ukugqoka Kwekhabhoni

Indlela ye -Carbon -in-pulp yengeza ikhabhoni ethangini lokumunca ukuze imunce igolide. Uma amandla okumunca ethangini lokumunca enamandla kakhulu, ikhabhoni izogaywa futhi ilahleke. Uma amandla okumunca ebuthakathaka, kuzokhiqizwa inhlabathi. Ngakho-ke, ngenkathi kugcinwa i-pulp isesimweni sokulenga, ngakolunye uhlangothi, kuyadingeka ukukhetha ikhabhoni enobunzima obukhulu ukuze ikhiqizwe, kanti ngakolunye uhlangothi, kuyadingeka ukunciphisa isivinini sokujikeleza kwe-impeller ukuze kuncishiswe ukulahleka kwe-pulp, ikhabhoni, kanye namandla okufaka ethangini lokumunca i-agitation.

7. Ukunquma Ikhono Elifanele

Njengamanje, amandla okucutshungulwa kwezitshalo ezijwayelekile ze-cyanidation zegolide asukela emashumini ambalwa amathani kuya emashumini ezinkulungwane zamathani ngosuku. Uma umthamo wokukhiqiza umkhulu, indawo yeplanti iba nkulu, kanye nokucaciswa kwemishini nokutshalwa kwezimali okukhulu. Umnikazi wemayini ngamunye kufanele anqume umthamo weplanti yokucubungula efanele ngokwesimo sangempela.

8. Ukunciphisa Isisindo Semishini Nokutshalwa Kwezimali

Lapho ukhetha ithangi le-leaching, ngakolunye uhlangothi, inqubo yokukhishwa iyadingeka ukuze isebenze kahle futhi ilondoloze amandla, futhi ngesikhathi esifanayo, idivayisi yokudlulisela iyadingeka ukuze ibe nesisindo esincane nesisindo esincane. Lapho umthamo, ukugxila kwe-pulp, kanye nesikhathi sokuvuza kunqunywa, inani lamathangi agelezayo linganqunywa. Kodwa-ke, imininingwane yamathangi okugezwa kufanele ifanele umthamo wesitshalo. Lapho kwakhiwa imboni yegolide ye-cyanidation engu-500t/d, uma kusetshenziswa ithangi le-φ3.5X3.5m leaching, izisetshenziswa ezidingekayo zidinga ukwandiswa, kukhuliswe ukutshalwa kwezimali. Ngakho-ke, kuphela ngemishini ekhanyayo namandla afanelekile lapho ukutshalwa kwezimali kokwakhiwa kwebhizinisi kungancishiswa.