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

Wasebenza I-Carbon Ingezwe ethangini lokukhipha amanzi, okuvumela ukwenzeka ngasikhathi sinye kokukhipha amanzi kanye nokumunca, okungukuthi ukumunca amanzi ngenkathi kudonswa 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. Ukumunca amanzi kanye nokumunca amanzi ngesikhathi esisodwa kuthuthukisa izimo ze-kinetic zokuncibilika kwegolide, i-faCILukucwilisa ukucwiliswa nokucwiliswa kwegolide. Indlela ye-carbon-in-leach ikakhulukazi ihlanganisa imisebenzi efana ne Ukulungiswa Kwezinto Ezisetshenziswayo Ezivuzayo, I-Leaching evuselelwe kanye ne-countercurrent carbon adsorption, desorption of gold-loaded carbon, I-Electrowinning kanye ne-Electrolysis, ukuncibilikisa nokwenza ingot, kanye nokuvuselelwa kwekhabhoni.

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 nokudla okuhlukahlukene okuse-pulp kungenzeka kubangele ukuvinjelwa kwamapayipi nezikrini. Ngaphezu kwalokho, avame ukumunca igolide e-pulp bese exuba ne-carbon ecebile. Ngakho-ke, kumele asuswe ngaphambi kokukhuhla. Uma kudingeka, ukuqina kwe-pulp kanye nokufakwa kwezithibi zesikali kuyadingeka. Ithibithi yesikali inganciphisa futhi ukukhuhla ebusweni be- Ikhabhoni Esebenzayo kanye nesikrini. Ngokuvamile, imisebenzi emibili yokususa udoti isethwe enkambisweni yokugaya, ngokulandelana lapho kugcwala kakhulu isigaba sokuqala nesesibili sokugaya. Imishini yokususa udoti isebenzisa kakhulu izikrini zokudlidliza eziqondile ezijwayelekile. 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 okukhulu ebusweni besikrini.

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 yokucwiliswa kwegolide nokusebenza kwe-adsorption. Inani lezigaba zokucwilisa ngokuvamile liyi-6 - 10 (imininingwane nenani lamathangi agelezayo anqunywa ngokuya ngomthamo wokucubungula we-concentrator). Kusukela I-Sodium Cyanide isanda kwengezwa ku-Tank No.1. inani legolide elivutshiwe lincane uma kuqhathaniswa. Ngakho-ke, izitshalo eziningi ze-carbon-in-leach zisebenzisa i-Tank No.1 njenge-pre-leaching tank, kanye namathangi alandelayo njengama-leaching kanye nama-adsorption. Ithangi ngalinye le-leaching ne-adsorption lifakwe isikrini esihlukanisa i-carbon ukuze sihlukanise ikhabhoni ne-pulp. I-pulp igeleza iye phambili, futhi ikhabhoni ecushiwe igeleza ihlehle, okungukuthi, i-pulp nekhabhoni ecushiwe ku-adsorption ephikisanayo. Ikhabhoni entsha ecushiwe yengezwa ethangini lokugcina le-leaching ne-adsorption, futhi ikhabhoni egcwele igolide iyakhishwa ethangini lokuqala le-leaching ne-adsorption. Ikhabhoni ecushiwe iba yigolide - ikhabhoni elayishiwe ngokufaka igolide ku-pulp. Ngemuva kokuthi i-adsorption isiqediwe, i-pulp equkethe igolide - ikhabhoni elayishiwe ifakwa esikrinini esikhipha ikhabhoni ngokuphakanyiswa komoya. Isikrini esikhipha ikhabhoni sihlukanisa ikhabhoni ecushiwe kanye ne-pulp. Ngemuva kokuhlolwa nokuhlanza, ithunyelwa ekusebenzeni kwe-desorption kanye ne-electrowinning. Ngemuva kokukhangisa ngale ndlela, ibanga legolide lesixazululo se-pulp ngokuvamile lingu-0.01 - 0.03g/m³. Ngokuvamile, ikhabhoni ecushiwe evame ukusetshenziswa kakhulu ngukhukhunathi - ikhabhoni ecushiwe, enezimbotshana ezincane, ukusebenza okuphezulu, ukumelana nokugqokwa, kanye nokuvuselelwa. Isebenza kahle kakhulu i-adsorption kanye ne-abrasion - amandla okumelana, ingakhuphula izinga le-adsorption ngo-30%, ithuthukise kakhulu izinga lokutholwa kwegolide ezinsimbi ezihambisanayo, futhi ithuthukise kakhulu izinzuzo zezomnotho 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.