Kungani I-Sodium Cyanide Isetshenziswa Kakhulu Ekukhishweni Kwegolide?

Embusweni we ukukhishwa kwegolide, i-sodium cyanide ime njengendawo yokuvuselela isisekelo, idlala indima ebalulekile embonini. Kodwa yini eyenza ibaluleke kangaka? Ake sihlole izizathu ezibangela ukusetshenziswa kwayo kabanzi.

1. I-Chemical Reactivity

Sodium i-cyanideUkusebenza kwegolide ekukhishweni kwegolide kungenxa yezakhiwo zayo zamakhemikhali ezihlukile. Igolide, ngesimo salo somdabu, alisebenzi futhi alisabelani kalula nezinto ezivame kakhulu. Nokho, nini I-Sodium Cyanide yethulwa enqubweni yokukhipha, ihlangana negolide lapho kukhona umoya-mpilo namanzi ukuze kwakhiwe inhlanganisela yegolide-cyanide encibilikayo. Lokhu kusabela kuguqula izinhlayiya zegolide ezingancibiliki zibe yisimo sokuncibilika, okuvumela ukuhlukana kalula ne-matrix ye-ore. Leli khono lokwakha izinhlanganisela ezizinzile nezincibilikayo ngegolide liyisici esibalulekile ekusetshenzisweni okubanzi kwe I-sodium cyanide ezimayini zegolide.

2. Ukusebenza kahle nobumsulwa

Enye yezinzuzo ezinkulu zokusebenzisa i-sodium cyanide ekukhishweni kwegolide ukusebenza kwayo okuphezulu. I-Cyanide leaching ingafinyelela izinga eliphezulu lokutholwa kwegolide, ngokuvamile ikhipha kufika ku-90% noma ngaphezulu wegolide elikhona ku-ore, kuye ngezici ze-ore. Uma kuqhathaniswa nezinye izindlela zokukhipha, njenge IMERCURY ukuhlanganiswa, i-cyanide leaching iphumelela kakhulu ekukhipheni igolide ezinhlotsheni eziningi ze-ore, kuhlanganise nezinsimbi ezisezingeni eliphansi.

Ngaphezu kwalokho, inhlanganisela yegolide-cyanide eyakhiwe ngesikhathi senqubo yokucwilisa ingaphinde icutshungulwe ukuze kutholwe igolide elihlanzeke kakhulu. Ngezinyathelo ezilandelayo ezifana nemvula enezinki noma i-electrolysis, igolide lingatholwa lisesimweni esimsulwa, lihlangabezana nezidingo zekhwalithi ephezulu yobucwebe, izinto zikagesi, nezimakethe zokutshalwa kwezimali.

3. Izindleko - ukusebenza kahle

Ngokombono wezomnotho, i-sodium cyanide inikeza izindleko - ukusebenza kahle. Nakuba i-sodium cyanide ngokwayo iwubuthi, izindleko zayo zokukhiqiza nezokuthenga zinengqondo uma kuqhathaniswa namanye ama-reagents angase asetshenziselwe ukukhipha igolide. Ukwengeza, inqubo ye-cyanidation isungulwe kahle futhi yenziwa kahle emashumini eminyaka. Ingqalasizinda kanye nezinto zokusebenza ezidingekayo ekulethweni kwe-cyanide zisezingeni elilinganiselwe, kunciphisa isidingo sobuchwepheshe obubizayo, obukhethekile. Lokhu kusho ukuthi izinkampani zezimayini zingakwazi ukuthola igolide eliphumelelayo ngenani eliphansi uma kuqhathaniswa neyunithi ngayinye yegolide elikhiqizwayo, okuyenza ibe inketho ekhangayo embonini yezimayini yegolide enokuncintisana kakhulu.

4. Ingqalasizinda Emisiwe Nokujwayelana

Imboni yezimayini zegolide ibisebenzisa i-sodium cyanide ukuze kukhishwe igolide isikhathi esingaphezu kwekhulu. Ngenxa yalokho, kunengqalasizinda ethuthukiswe kahle ezungeze ukusetshenziswa kwe-sodium cyanide. Izinkampani zezimayini zinokufinyelela ochungechungeni oluthembekile lokuhlinzeka nge-sodium cyanide, kusukela ekukhiqizeni kuya ekuthuthweni nasekugcinweni.

Ngaphezu kwalokho, onjiniyela bezimayini, ochwepheshe, nabasebenzi bajwayelene kakhulu nenqubo ye-cyanidation. Baqeqeshelwe ukuphatha i-sodium cyanide ngokuphepha, ukusebenzisa imishini yokucwilisa, nokuphatha yonke inqubo yokukhipha. Lolu lwazi oluqoqiwe nolwazi lwenza kube lula ukuthi imisebenzi yezimayini iqalise futhi igcine inqubo ye-cyanidation, kuncishiswe ijika lokufunda kanye nezingozi ezingaba khona ezihlobene nokwamukela izindlela zokumba ezintsha nezingakazanywa.

5. Ukuzivumelanisa nezimo Ezinhlotsheni Ezihlukene Zensimbi

Izindlela zokukhipha i-sodium cyanide zivumelana kakhulu nezinhlobo eziningi ze-ore yegolide. Kungakhathaliseki ukuthi kumahhala - ama-milling ores lapho igolide likhululwa kalula ku-host rock, noma ama-refractory ore ayinkimbinkimbi adinga izinyathelo zokwelashwa kwangaphambili, i-cyanide leaching ingalungiswa futhi ithuthukiswe. Ngama-refractory ore, izindlela ezinjengokugazinga, i-pressure oxidation, noma i-bio-oxidation ingahlanganiswa ne-cyanide leaching ukuze kubhidlizwe isakhiwo se-ore futhi kuvezwe igolide esixazululweni se-cyanide, okuvumela ukukhishwa okuphumelelayo. Lokhu kuguquguquka kwenza i-sodium cyanide ibe yinketho ekhethwayo ezinkampanini zezimayini ezisebenzelana namadiphozi e-ore ahlukahlukene.

Kodwa-ke, kubalulekile ukuqaphela ukuthi nakuba i-sodium cyanide inikeza izinzuzo ezibalulekile ekukhishweni kwegolide, ukusetshenziswa kwayo futhi kuphakamisa ukukhathazeka okukhulu kwemvelo nokuphepha ngenxa yobuthi bayo obuphezulu. Ngenxa yalokho, imboni ihlale icwaninga futhi ithuthukisa ezinye izindlela zokukhipha futhi ithuthukise izimiso zokuphepha ukuze kuncishiswe ubungozi obuhlobene nokusetshenziswa kwe-sodium cyanide ngenkathi isahlangabezana nesidingo somhlaba wonke segolide.