I-cyanidation ingenye yezindlela eziyinhloko zokuzuza ezimayini zegolide, futhi ingahlukaniswa ngezinhlobo ezimbili: i-cyanidation eshukumisayo kanye ne-percolation cyanidation.Kule nqubo, inqubo yokukhipha igolide ye-cyanide ngokuyinhloko ihlanganisa inqubo yokubuyisela i-cyanide-zinc (CCD ne-CCF) kanye ne-cyanide carbon slurry engahlungiwe (CIP ne-CIL).Imishini yokuhlukanisa igolide esetshenziswa kakhulu isetshenziswa ngokuyinhloko esikhundleni se-zinc powder, ithangi elinyakazayo, ukusetshenziswa okuphansi kwesistimu ye-electrolysis ye-desorption.
1. Ithuluzi lokuthatha indawo yempushana ye-zinc yindlela esebenzisa impushana ye-zinc ukuze kukhishwe igolide oketshezini oluyigugu enqubweni yokushintsha i-cyanide-zinc.Okusunguliwe kwamanje kuhloselwe kakhulu okokusebenza kwegolide okuzuzisayo okuqukethe isiliva eliphakeme ore legolide.Ngemva kokuhlanza uketshezi oluyigugu nokukhipha umoya-mpilo, kunezelwa umshini wokubuyisela impushana we-zinc ukuze kutholwe udaka lwegolide.Lapho i-zinc powder (usilika) isetshenziselwa ukufaka esikhundleni sokuna kwemvula futhi kubuyiselwe igolide, le ndlela ebizwa ngokuthi i-cyanide-zinc replacement method (CCD neCCF) ingasetshenziswa ekukhiqizeni, noma esikhundleni sempushana ye-zinc ingasetshenziswa ukwelapha izixazululo ezibizayo (izixazululo ze-leaching). ).Ngokuvamile, ngaphezu kwezimayini zegolide ezinokuqukethwe okuphezulu kwesiliva, amathuluzi okushintsha i-zinc powder angasetshenziswa futhi ukucubungula ukugxiliswa kwegolide okudingeka kuthuthukiswe ibanga lawo.
2. Ithangi elishukumisayo le-double impeller leaching Ithangi elishukumisayo le-double impeller leaching liyithuluzi elivame ukusetshenziswa lokucutshungulwa kwezimbiwa enqubweni yokukhipha igolide ye-carbon slurry (indlela ye-CIP ne-CIL).Ngaphansi kwesenzo sokudonsa nokunyakazisa kwe-impeller ephindwe kabili, i-slurry igeleza phansi isuka phakathi, ihlakazeke ngamapuleti okumanzisa azungezile, ijova umoya ekugcineni kwe-shaft, ixube ne-slurry futhi ijikeleze phezulu.Lesi sixazululo silungele izinhlelo zokusebenza ezine-gravity encane ethize, i-viscosity ephansi kanye nezinga lemvula elincane., lapho usayizi wezinhlayiya ze-ore ungaphezu kwe--200 mesh futhi ukugxila kwesixazululo segolide kungaphansi kuka-45%, ingxube emisiwe efanayo ingakhiwa.Ukumuncwa kanye neminye imisebenzi yokuhlanganisa.Enqubweni ye-CIP yediphozithi yegolide, i-leaching ne-adsorption yimisebenzi ezimele.Emsebenzini wokumuncwa, inqubo yokucwilisa ngokuyisisekelo iqedwa.Usayizi, inani, nezimo zokusebenza zamathangi e-adsorption kunqunywa amapharamitha we-adsorption.Inqubo ye-CIL yediphozithi yegolide ibandakanya ukuleaching kanye nokusebenza kwe-adsorption ngasikhathi sinye.Njengoba ukusebenza kokugeleza ngokuvamile kuthatha isikhathi eside kunokusebenza kwe-adsorption, ubukhulu bethangi elinyakazayo linqunywa amapharamitha aleaching ukuze kutholwe inani lokungena komoya kanye nomthamo.Ngenxa yokuthi izinga lokumunca lihlobene nomsebenzi wokugxiliswa kwegolide elincibilikisiwe, amazinga angu-1-2 okucwiliswa ngaphambili ngokuvamile ayenziwa ngaphambi kokucwiliswa onqenqemeni ukuze kukhuliswe ukugcwala kwegolide elincibilikisiwe ethangini le-adsorption futhi kwandiswe isikhathi sokucwiliswa.
3. Ukusetshenziswa okuphansi kwesistimu ye-electrolysis ye-desorption esheshayo.I-low-consumption rapid desorption electrolysis system iyisethi yempahla yokugqoka yensimbi yegolide eqeda futhi i-electrolyte ikhabhoni egcwele igolide ukuze ikhiqize udaka lwegolide ngaphansi kwezinga lokushisa eliphezulu kanye nokucindezela okukhulu.I-carbon slurry elayishwe igolide ithunyelwa esikrinini sokuhlukaniswa kwekhabhoni (imvamisa isikrini esidlidlizayo esilandelanayo) ngepompo ye-carbon noma isiphakamisi somoya.Indawo yesikrini igezwa ngamanzi ahlanzekile ukuze kuhlukaniswe ikhabhoni odongeni.Ikhabhoni egcwele igolide ingena ethangini lokugcina ikhabhoni, udaka kanye namanzi agelezayo.Faka isigaba sokuqala sethangi le-adsorption.Ukusebenzisa isistimu ye-electrolysis enamandla aphansi futhi esheshayo ukwengeza ama-anion kungase kuthathe indawo ye-Au(CN)2- nge-Au(CN)2-, futhi uketshezi oluyigugu olutholwe ngokuncibilikisa ikhabhoni egcwele igolide lungabuyisa igolide eliqinile ngendlela ye-ionization.Uhlelo oluphansi lokusebenzisa amandla e-electrolysis olusetshenziswa ngokushesha lunezinga lokuncibilika elingaphezu kuka-98% ngaphansi kwezinga lokushisa eliphezulu (150°C) nezimo zokucindezela okukhulu (0.5MPa), futhi ukusetshenziswa kwamandla kungu-1/4~1/2 kuphela kwezivamile. uhlelo.Inhlanganisela engenabo ubuthi ne-side-effect iqukethe i-carbon activator, engavuselela ikhabhoni.Ikhabhoni enciphile ayidingi ukwenziwa kabusha ngendlela yomlilo, elondoloza izindleko zokuvuselela ikhabhoni.I-slurry yegolide ingeyezinga eliphezulu, ayidingi i-electrolysis ehlehlayo, futhi kulula ukuyikhipha.Ngesikhathi esifanayo, uhlelo lwe-electrolysis lwe-low-consumption olusheshayo lusebenzisa izindlela ezintathu zokuphepha, okungukuthi ubuhlakani besistimu ngokwayo, indlela yokunciphisa ingcindezi ezenzakalelayo kanye nevalvu yokuphepha yomshwalense.
Isikhathi sokuthumela: Feb-18-2024
