I-Lead Oxide Ithuthukisa Ukucwiliswa Kwegolide Ku-Cyanide Tailings

Isingeniso

I-Cyanidation inqubo esetshenziswa kabanzi ekukhipheni igolide kuma-ore. Kodwa-ke, ama-cyanide tailings avame ukuqukatha inani elithile legolide elisele, okunzima ukulithola ngenxa yethonya lamaminerali ahlobene nalo. Ukuthuthukisa ukusebenza kahle kokukhuculula igolide kuma- cyanide tailings kubaluleke kakhulu ekusetshenzisweni kabusha kwezinsiza kanye nezinzuzo zomnotho. Ocwaningweni lwakamuva, kutholakale ukuthi i-lead oxide ingadlala indima enhle ekuthuthukiseni ukukhuculula igolide kuma-cyanide tailings.

Inkinga Yezinga Eliphansi Legolide Lokuvuza Ku-Cyanide Tailings

Inselele enkulu ekutholeni igolide ezinsongweni ze-cyanide isekuhlanganisweni okuyinkimbinkimbi kwe-mineralological. I-cyanide esele ezinsongweni ingabangela igolide ukuthi isabele ngama-sulfide ensimbi ehlobene (njenge-pyrrhotite). Lokhu kusabela kwakha ifilimu yokudlulisa i-Au/Sx ebusweni bezinhlayiya zegolide. Le filimu yokudlulisa iyasebenza njengesivikelo, ivimbela ukuxhumana okusebenzayo phakathi kwesixazululo segolide ne-cyanide, ngaleyo ndlela kuholele esilinganisweni esiphansi sokuphuma kwegolide esivamile.

Indlela I-Oxide Yomthofu Ithuthukisa Ngayo Ukugeleza Kwegolide

I-Chemical Reaction Mechanism

I-lead oxide ibamba iqhaza ekuphenduleni kwamakhemikhali amaningi phakathi nenqubo yokucwilisa. Okokuqala, i-lead oxide ingasabela ngefilimu ye-passivation eyakhiwe endaweni yegolide. Lokhu kusabela kwephula ifilimu ye-passivation, iguqule ibe usawoti oncibilikayo. Ngenxa yalokho, ubuso begolide buphinde buvezwe, okuvumela i-cyanide ukuba isabele ngegolide. Okwesibili, i-lead oxide ingasebenza njenge-oxidant ohlelweni lwe-leaching. Lapho kukhona i-lead oxide, amandla e-oxidation wesistimu ayalungiswa, okuzuzisa ukuthi i-oxidation yegolide yakhe izingxube zegolide ze-cyanide ezincibilikayo.

I-Electrochemical Mechanism

Kunomehluko ongaba khona kagesi phakathi kwegolide nomkhiqizo wokunciphisa we-lead oxide. Lo mehluko ongaba khona wenza ukwakheka kwebhethri eliyisisekelo ngaphakathi kwesistimu yokugezela. Kuleli bhethri eliyinhloko, igolide lisebenza njenge-anode futhi lingena kwi-oxidation, kuyilapho umkhiqizo wokunciphisa we-lead oxide usebenza njenge-cathode. Le nqubo ye-electrochemical, eyaziwa ngokuthi i-contact corrosion, isheshisa ngempumelelo ukuqedwa kwegolide, ngaleyo ndlela ithuthukise izinga lokukhishwa kwegolide.

Ukuqinisekisa Kokuhlola

Izinto Zokuhlola kanye Nezindlela

Abacwaningi bakhethe amasampula omsila we-cyanide omele ukuhlolwa. Amasampula emisila aqale aphawulwa ukuze kutholakale ukwakheka kwawo kwezimbiwa kanye negolide. Khona-ke, amanani ahlukene e-lead oxide ayengezwa ohlelweni lwe-cyanide leaching. Izimo zokuvuza, njengesikhathi sokuvuza, izinga lokushisa, nokugxilwa kwe-cyanide, zalawulwa ngokucophelela. Uchungechunge lwezilingo ezifanayo lwenziwa ukuze kuqinisekiswe ukunemba kwemiphumela. Ngaphezu kwalokho, amasu okuhlaziya athuthukile, afana ne-scanning electron microscopy (SEM) kanye ne-X-ray photoelectron spectroscopy (XPS), asetshenziswa ukuze kuhlaziywe ukumila komhlaba kanye nezinguquko zokwakheka kwamakhemikhali ezinhlayiyeni zegolide ngaphambi nangemuva kokucwiliswa.

Imiphumela yokuhlola

Imiphumela yokuhlola ikhombisile ukuthi ukungezwa kwe-lead oxide kwandisa kakhulu ukusebenza kahle kwe-leaching yegolide emisipheni ye-cyanide. Uma kuqhathaniswa neqembu lokulawula ngaphandle kokufakwa kwe-lead oxide, izinga lokukhipha igolide lenyuke ngephesenti elimangalisayo. Isibonelo, kwezinye izivivinyo, izinga lokukhipha igolide lenyuke lisuka enanini eliphansi kakhulu laya ngaphezu kuka-[X]%. Ngesikhathi esifanayo, ukusetshenziswa kwe -Sodium Cyanide nakho kwehlisiwe ngezinga elithile. Ukuhlaziywa kwe-SEM kanye ne-XPS kuqinisekisile ukuthi i-lead oxide ngempela yasabela ngefilimu yokudlulisa phezu kobuso begolide, futhi izinto ezintsha zamakhemikhali zavela ebusweni bezinhlayiya zegolide ngemuva kokufakwa kwe-lead oxide, okwakuhambisana nendlela yokusabela ehlongozwayo.

Ithemba Lohlelo Lokusebenza

Ukutholwa kokusebenzisa i-lead oxide ukuze kuthuthukiswe ukucwiliswa kwegolide kumasisila e-cyanide kunamathuba amaningi okusebenza. Embonini yezimayini, lobu buchwepheshe bungasetshenziswa ezitshalweni ezikhona zokwelapha i-cyanide tailings. Ngokumane ungeze i-lead oxide enqubweni yokucwiliswa, izinga lokutholwa kwegolide lingathuthukiswa ngaphandle kokuthuthukiswa okukhulu kwemishini. Lokhu akukhulisi nje kuphela inani lezomnotho lezinsiza ze-tailings kodwa futhi kunciphisa umthelela wendawo obangelwa ukugcinwa kwesikhathi eside kwezinsalela ezinegolide. Ngaphezu kwalokho, le ndlela inganwetshwa futhi ekwelapheni amanye amatshe egolide aphikisayo, anikeze isisombululo esisha sokumbiwa kahle kwemithombo yegolide.

Sengiphetha, i-lead oxide ikhombisa amandla amakhulu ekwandiseni ukucwiliswa kwegolide kumasisila e-cyanide. Ngokuqonda okujulile kwendlela yokuthuthukisa kanye nokwenza ngcono okuqhubekayo kwezimo zokuhlola, lobu buchwepheshe kulindeleke ukuthi budlale indima ebalulekile ekuthuthukisweni kwesikhathi esizayo kwemboni yezimayini zegolide.