I-sodium cyanide ku-Heap Leaching: Isici Esibalulekile Ezimayini Zegolide

Emkhakheni wezimayini zesimanje, I-Heap Leaching iye yavela njengendlela eyamukelwa kabanzi futhi ebiza kakhulu - ephumelelayo yokukhipha igolide kuma-ore asezingeni eliphansi. Phakathi kwezingxenye ezehlukene zale nqubo, I-Cyanide, ikakhulukazi I-Sodium Cyanide (NaCN), idlala indima ebalulekile.

Ukubaluleka Kwesodium Cyanide Ekukhishweni Kwegolide

Izibalo ziveza lokho i-sodium cyanide isetshenziswa ngaphezu kuka-80%. Ukukhishwa Kwegolide izinqubo. Leli zinga eliphezulu lezicelo ligcizelela ukubaluleka kwalo embonini yezimayini. Ngokwesibonelo, emayini eTanzania, ngemva kokwethulwa I-sodium cyanide njenge-ejenti ye-leaching, ukuthuthukiswa okuphawulekayo kwafakazelwa. Izinga lokubuyiswa kwe-ore likhuphuke lisuka ku-60% laya ku-85%, futhi ukukhishwa nakho kwenyuke kakhulu. Lezi zibalo azibonisi nje ukusebenza kwe-sodium i-cyanide ohlelweni lokuhlomula kodwa futhi igqamisa indima yayo ebalulekile ekwenyuseni izinga lokutholwa kwegolide nenani lokukhiqiza.

I-Mechanism ye-Sodium Cyanide ku-Heap Leaching

Enqubweni yokucwilisa inqwaba, amatshe egolide ebanga eliphansi noma ama-flotation tailings anqwabelaniswa ephedini elakhiwe ngokukhethekile elingangeneki. Bese, isixazululo se-sodium cyanide sifafazwa phezu kwenqwaba ye-ore ngendlela eyi-cyclic. Lapho kukhona umoya-mpilo (ngokuvamile ovela emoyeni), i-sodium cyanide ihlangana negolide ensimbi. Ukusabela kwamakhemikhali ngokuvamile kungavezwa ngale ndlela elandelayo: 4Au + 8NaCN + O₂+ 2H₂O = 4Na[Au(CN)₂]+ 4NaOH. Ngalokhu kusabela, igolide lakha inkimbinkimbi encibilikayo, i-sodium aurocyanide (Na[Au(CN)₂]), ebese incibilika esixazululo futhi ingaphinde itholakale.

Izinzuzo Zokusebenzisa I-Sodium Cyanide Ku-Heap Leaching

1. Ukusebenza Okuphezulu: Njengoba kuboniswe esibonelweni semayini yaseTanzania, i-sodium cyanide ingahlakaza ngempumelelo igolide kusuka ku-ores, okuholela ekwenyukeni okukhulu kwezinga lokutakula. Lokhu kusebenza kahle okuphezulu ekukhipheni igolide ku-ore yezinga eliphansi kwenza inqwaba yokuvuzwa nge-sodium cyanide kube inketho esebenzayo ezimayini ebezingabhekwa njengengenamali.

2. Izindleko - ukusebenza kahle: Uma kuqhathaniswa nezinye izindlela zokukhipha igolide, ukusetshenziswa kwe-sodium cyanide ku-heap leaching kubiza kakhulu. Izindleko eziphelele zenqubo yokukhishwa kwenqwaba, kuhlanganise nezindleko ze-sodium cyanide, ngokuvamile ziphansi kunalezo eziyinkimbinkimbi kanye nezindlela zokukhipha amandla. Lokhu kubiza - ukusebenza ngempumelelo kuyisici esikhulu esinomthelela ekusetshenzisweni kwayo kabanzi embonini yezimayini.

Izinselele kanye Nezinyathelo Zokuqapha Ezihambisana Ne-Sodium Cyanide

1. Ubuthi: I-sodium cyanide inobuthi obukhulu. Noma yikuphi ukuvuza noma ukuphathwa ngendlela engafanele kwesixazululo se-cyanide kungaba yingozi enkulu emvelweni nempilo yabantu. Ngakho-ke, izinyathelo zokuphepha eziqinile kanye nezinqubo zokuvikela imvelo kufanele zibe khona ngesikhathi sokugcinwa, ukuthuthwa, kanye nokusetshenziswa kwe-sodium cyanide. Izimayini kudingeka zibe nezinhlelo zokuqukatha eziklanywe kahle ukuvimbela ukuchitheka kwe-cyanide nezindlela zokwelashwa ezisebenzayo ze-cyanide - equkethe izixazululo zemfucuza.

2. Ukuthobela Ukulawula: Ngenxa yobuthi bayo, ukusetshenziswa kwe-sodium cyanide kungaphansi kwemithetho eqinile emazweni amaningi. Izinkampani zezimayini kumele zithobele le mithetho mayelana nokugcinwa, ukuphatha kanye nokulahlwa kwe-cyanide. Lokhu kubandakanya ukuqapha njalo amazinga e-cyanide emanzini alahlwayo kanye nokuqinisekisa ukuthi ayahlangabezana namazinga avunyelwe emvelo.

Sengiphetha, i-sodium cyanide iyi-reagent ebalulekile enqubweni yokukhishwa kwenqwaba yokumbiwa kwegolide. Ukusebenza kwayo okuphezulu kanye nezindleko - ukusebenza kahle kuyenza ibe ukukhetha okuncanyelwayo kokukhipha igolide kuma-ore wezinga eliphansi. Kodwa-ke, ubuthi obuhambisanayo kanye nezidingo zokulawula zidinga ukuphathwa ngokucophelela kanye nokulandelwa okuqinile ukuze kuqinisekiswe ukusebenza kwezimayini okuzinzile nokuphephile.