Ukukhipha Igolide: Izinyathelo ukusuka ku-Ore ukuya e-Ingot ku-Carbon Leaching

I -Activated Carbon yengezwa ethangini lokukhipha amanzi, okuvumela ukwenzeka ngasikhathi sinye kokukhipha amanzi kanye nokumunca, okungukuthi ukumunca amanzi ngenkathi kumunca amanzi, okubizwa ngokuthi indlela ye-carbon-in-leach (CIL). Yakhiwe ngokusekelwe endleleni ye-carbon-in-pulp, inikeza izinzuzo zokunciphisa inani lamatangi okukhipha amanzi kanye nokunciphisa ukugeleza kwenqubo. Ngenxa yalokho, inganciphisa ukutshalwa kwezimali zokwakha kanye nezindleko zokukhiqiza. Ukukhipha amanzi kanye nokumunca amanzi ngesikhathi esisodwa kuthuthukisa izimo ze-kinetic zokuncibilika kwegolide, i- CIL ikhuthaza ukumunca amanzi kanye nokumunca igolide. Indlela ye-carbon-in-leach ihlanganisa kakhulu imisebenzi efana nokulungiselela izinto zokusetshenziswa zokukhipha amanzi , ukumunca amanzi okuxubile kanye nokumunca amanzi oku-countercurrent, ukumunca i-carbon egcwele igolide, ukumunca i-Electrowinning kanye ne-Electrolysis , ukuncibilikisa kanye nokwenza i-ingot, kanye nokuvuselelwa kwe-carbon.

01 Ukulungiswa Kwezinto Ezisetshenziswayo Ezivuzayo

Lapho kwamukelwa inqubo yokukhipha igolide ye-carbon-in-leach, ukulungiswa kwezinto ezingavuthiwe zokukhipha i-leaching kubandakanya ukuchotshozwa ngokomzimba kanye nokuhlukaniswa kokugaya. Imvamisa, kunqubo yokukhipha igolide le-carbon-in-leach, ukucoleka kokuchichima okuvela ekugayweni kokugaya kuvame kakhulu kangangokuthi u-85 - 95% udlula -200 mesh.

02 Umsebenzi Wokususa Imfucumfucu

Ama-chip okhuni kanye nezinhlobo ezahlukene ze-pulp kungenzeka zibangele ukuvinjelwa kwamapayipi nezikrini. Ngaphezu kwalokho, zivame ukumunca igolide ku-pulp bese ziyixuba ne-carbon ecebile. Ngakho-ke, kumele zisuswe ngaphambi kokucwiliswa. Uma kudingeka, ukuqina kwe-pulp kanye nokufakwa kwezithibi zesikali kuyadingeka. Isithibi sesikali singanciphisa futhi ukukala ebusweni be- Activated Carbon kanye nesikrini. Ngokuvamile, imisebenzi emibili yokususa udoti isethwe enkambisweni yokugaya, ngokulandelana ekugcwaleni kwesigaba sokuqala nesesibili sokugaya. Imishini yokususa udoti isebenzisa kakhulu izikrini ezidlidlizayo eziqondile ezimaphakathi. Ekusebenzeni kokuqala kokususa udoti, izikrini ezijikelezayo nezikrini ezisilinda nazo zingasetshenziswa. Usayizi wembobo yesikrini sesikrini sokususa udoti kufanele ube mncane ngangokunokwenzeka ngenkathi kuqinisekiswa ukuthi akukho ukugcwala kwesikrini.

03 Umsebenzi Wokujiya Ngaphambi Kokuvuza

Lapho ukugcwala okuchichimayo kokuhlukaniswa kokugaya kuvame kakhulu ku-18 - 22%, akufanelekile ukukhishwa okuqondile, futhi ukuqina kwe-pulp kufanele kwenziwe. Kunconywa ukuthi usebenzise i-thickener ephezulu ene-footprint encane kanye nokusebenza kahle kokuqina okuphezulu.

04 I-Stirred Leaching kanye ne-Countercurrent Carbon Adsorption

Indlela ye-carbon-in-leach ibonakala ngenqubekela phambili efanayo yokusebenza kwe-leaching yegolide kanye ne-adsorption. Inani lezigaba ze-leaching ngokuvamile liyi-6 - 10 (izincazelo kanye nenani lamathangi e-leaching kunqunywa ngokuya ngomthamo wokucubungula we-concentrator). Njengoba i-Sodium Cyanide isanda kufakwa ku-Tank No.1, inani legolide eli-leach lincane kakhulu. Ngakho-ke, izitshalo eziningi ze-carbon-in-leach zisebenzisa i-Tank No.1 njengethangi langaphambi kokukhipha, kanye namathangi alandelayo njengamathangi e-leaching kanye ne-adsorption. Ithangi ngalinye le-leaching kanye ne-adsorption lifakwe isikrini esihlukanisa i-carbon ukuze lihlukanise i-carbon ne-pulp. I-pulp igeleza phambili, kanti i-activated carbon igeleza emuva, okungukuthi, i-pulp kanye ne-activated carbon ku-adsorption ephikisanayo. I-activated carbon entsha ingezwa ethangini lokugcina le-leaching kanye ne-adsorption, kanti i-carbon elayishwe igolide ikhishwa ethangini lokuqala le-leaching kanye ne-adsorption. I-activated carbon iba i-gold-loaded carbon ngokufaka igolide ku-pulp. Ngemva kokumuncwa sekuqediwe, i-pulp equkethe ikhabhoni egcwele igolide ifakwa esikrinini sokukhipha ikhabhoni nge-air lift. Isikrini sokukhipha ikhabhoni sihlukanisa ikhabhoni esebenzayo ne-pulp. Ngemva kokuhlola nokuhlanza, ithunyelwa ekusebenzeni kokukhipha nokuwinwa kwe-electro. Ngemva komuncwa ngale ndlela, izinga legolide lesisombululo se-pulp ngokuvamile lingu-0.01 - 0.03g/m³. Ngokuvamile, ikhabhoni esebenzayo esetshenziswa kakhulu yikhabhoni esebenzayo yegobolondo likakhukhunathi, enezimbobo ezincane, umsebenzi ophezulu, ukumelana nokuguguleka, kanye nokuvuselelwa. Inamandla amahle kakhulu okumuncwa kanye namandla okuguguleka, ingakhuphula izinga lokumuncwa ngo-30%, ithuthukise kakhulu izinga lokubuyiselwa kwegolide ezinsimbini ezihlobene, futhi ithuthukise kakhulu izinzuzo zomnotho kanye nokusebenza kahle kokukhiqiza.

05 Ukuchithwa Kwegolide - Ikhabhoni elayishiwe, i-Electrowinning kanye ne-Electrolysis

Ikhabhoni egcwele igolide kanye ne-pulp kuphakanyiselwa kusikrini esihlukanisa i-carbon (ngokuvamile isikrini esindindizelayo esilandelanayo) ngephampu ekhipha ikhabhoni noma ngokuphakamisa umoya. Zihlanjululwa ngamanzi ahlanzekile esikrinini ukuze zihlukanise i-carbon ne-pulp. Ikhabhoni egcwele igolide ingena ethangini lokugcina ikhabhoni, bese kuthi i-pulp namanzi ahlanzayo kungena ethangini lokuqala le-adsorption. Kunezindlela ezimbalwa zokususa igolide - ikhabhoni elayishiwe. Njengamanje, indlela yokushisa ephezulu kanye ne-high-pressure desorption isetshenziswa kakhulu. Okusho ukuthi, i-anion ekhangiswa kalula ikhabhoni eyenziwe yasebenza yengezwa kusistimu ye-desorption ukuze isuse i-Au(CN)₂⁻ futhi izuze ukuncibilika kwegolide. Uketshezi oluyigugu olutholakala ngokukhipha igolide - ikhabhoni elayishiwe lutholwa nge-ionization ukuze kutholwe igolide eliqinile.