I-Lead Oxide Ithuthukisa Ukucwiliswa Kwegolide Ku-Cyanide Tailings

Isingeniso

I-Cyanidation iyinqubo esetshenziswa kabanzi yokukhipha igolide ematsheni. Nokho, izinhlayiya ze-cyanide ngokuvamile iqukethe inani elithile legolide elisele, okunzima ukulithola ngenxa yethonya lamaminerali ahlobene. Ukuthuthukisa ukusebenza kahle kwegolide kusuka i-cyanide i-tailings ibaluleke kakhulu ekusetshenzisweni kabusha kwezinsiza kanye nezinzuzo zezomnotho. Ocwaningweni lwakamuva, kutholakale ukuthi i-oxide eholayo ingadlala indima enhle ekuthuthukiseni ukucwiliswa kwegolide emisileni ye-cyanide.

Inkinga Yezinga Eliphansi Legolide Lokuvuza Ku-Cyanide Tailings

Inselele enkulu ekutholeni igolide emisileni ye-cyanide ilele ekwakhekeni kwe-mineralogical eyinkimbinkimbi. I-cyanide eyinsalela kuma-tailings ingabangela igolide ukuthi lisabele nama-sulfide ensimbi ehlobene (njenge-pyrrhotite). Lokhu kusabela kwakha ifilimu ye-Au/Sx passivation phezu kwezinhlayiya zegolide. Le filimu ye-passivation isebenza njengesithiyo, ivimbele ukuthintana okusebenzayo phakathi kwesixazululo segolide ne-cyanide, ngaleyo ndlela kuholele ekunciphiseni okujwayelekile okujwayelekile. izinga leaching legolide.

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 ibonise ukuthi ukungezwa kwe-lead oxide kwandisa kakhulu ukusebenza kahle kwegolide ekusileni kwe-cyanide. Uma kuqhathaniswa neqembu lokulawula ngaphandle kokungeza i-lead oxide, i ukucwiliswa kwegolide izinga likhuphuke ngamaphesenti amangalisayo. Isibonelo, kwezinye izivivinyo, izinga lokuncishiswa kwegolide likhuphuke lisuka kunani eliphansi kakhulu laya ngaphezu kuka-[X]%. Ngesikhathi esifanayo, ukusetshenziswa I-Sodium Cyanide nayo yancishiswa ngezinga elithile. Ukuhlaziywa kwe-SEM ne-XPS kuphinde kwaqinisekisa ukuthi i-lead oxide isabela ngempela ngefilimu ye-passivation endaweni yegolide, futhi izinto zamakhemikhali ezintsha zavela ebusweni bezinhlayiya zegolide ngemva kokwengezwa kwe-lead oxide, eyayihambisana 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.