Ubuchwepheshe Bamuva Ekucubungulweni Kwensimbi Yeplatinum
I-Platinum (Pt) ingenye yezinsimbi eziyigugu ezibaluleke kakhulu embonini yanamuhla. Inani layo aliveli nje kuphela ekungatholakalini kwayo, kodwa ikakhulukazi ezimpahleni zayo eziphakeme: ukumelana nokugqwala okuphezulu, ukuqina kokushisa okuphezulu, kanye nomsebenzi ophezulu wokuvuselela. Lokhu kuhlanganiswa kwenza i-platinum ibe yinto ebalulekile yama-catalyst embonini yezimoto, embonini yamakhemikhali, amadivayisi ezokwelapha, ngisho nezingxenye ze-elekthronikhi. Kodwa-ke, ukucubungula i-platinum akuyona into elula. Izinselele zifaka phakathi amazinga aphansi e-ore, izinqubo zokuhlukanisa eziyinkimbinkimbi, ukusetshenziswa kwamandla aphezulu, kanye nezidingo eziqinile zokuzinza kwemvelo. Ngakho-ke, ubuchwepheshe bamuva ekucutshungulweni kwe-platinum buyaqhubeka nokukhula ukuze kwandiswe ukusebenza kahle, kuncishiswe ukukhishwa kwegesi, futhi kuthuthukiswe amazinga okubuyisa.
1. Intuthuko ekuhlolweni kwetshe le-ore kanye nokuhlukaniswa kwezinhlamvu
Isigaba sokuqala nesithuthuke kakhulu ukuhlukaniswa kwamaminerali nama-ore aqukethe i-Platinum Group Metals (PGMs), okuhlanganisa i-platinum, i-palladium, i-rhodium, i-iridium, i-ruthenium, ne-osmium. Ubuchwepheshe obufana ne-automated mineralogy (isb., i-QEMSCAN/MLA) buvumela ukuhlaziywa okusheshayo kokusatshalaliswa kwe-PGM kumaminerali abanjwe, usayizi wezinhlamvu, kanye nokukhululwa ngamaminerali e-gangue. Le datha ibalulekile ekwakheni uhlelo lokucubungula olufanele: ukuthi ukuntanta, ukuvuza, noma inhlanganisela yakho kokubili kufaneleka kakhulu.
Izindlela ezisekelwe ekufundeni komshini nazo ziyathuthukiswa ukuze zibikezele ukusebenza kokucubungula ngokusekelwe kudatha ye-geological kanye nenqubo. Ngamamodeli okubikezela, izigayo zingalungisa ngokuguquguqukayo imingcele yokulinganisa ukugaya, ukuntanta, noma i-reagent ukuze kugcinwe ukuzinza naphezu kokushintsha kwekhwalithi yensimbi.
2. Ukusungula izinto ezintsha ekushintsheni nasekulondolozeni amandla
Ukugaya i-ore kungenye yezinyathelo ezidinga amandla amaningi embonini yezimayini. Ubuchwepheshe bamuva bugxile ekusebenzeni kahle ngokusebenzisa ama-High Pressure Grinding Rolls (HPGR), ama-Vertical Roller Mills, kanye nezinhlelo zokulawula ezihlakaniphile. I-HPGR, isibonelo, inganciphisa ukusetshenziswa kwamandla futhi yandise ama-microfractures ezinhlayiyeni, ngaleyo ndlela isize ekuntanteni okulandelayo.
Izigayo zanamuhla zisebenzisa nezinzwa eziku-inthanethi ukuqapha ukusatshalaliswa kosayizi wezinhlayiya (i-PSD) ngesikhathi sangempela, bese zilawula isivinini sezigayo kanye nokujikeleziswa kwesigaba. Umphumela uba umkhiqizo ohambisanayo kanye nokunciphisa ukulahleka okungenzeka kweplatinum ezinsikeni.
3. Ubuchwepheshe bokuntanta obukhetha kakhulu futhi obunobungani nemvelo
Ezindaweni eziningi zokufaka i-PGM, inqubo eyinhloko ngemva kokugaya iwukuntanta, ikakhulukazi ukugxila amaminerali e-sulfide aphethe i-PGM. Izinto ezintsha zakamuva zenzekile ku:
1. Ama-reagent okuntanta esizukulwaneni esisha: abaqoqi abakhetha kakhulu, ama-frother aqinile kodwa abola kalula, kanye nama-modifiers acindezela ukungcola okuthile.
2. Ukuntanta kwekholomu nokweseli okusezingeni eliphezulu: ukwakheka kwebhamuza kanye namaphethini okugeleza okwandisa ukululama ngenkathi kunciphisa amazinga okungcola.
3. Ukulawulwa kwenqubo okusekelwe ku-AI: uhlelo lokulawula olusebenzisa izithombe ze-froth, i-pH, i-ORP, kanye nezinzwa ze-turbidity ukuze kuthuthukiswe umthamo we-reagent kanye nokugeleza komoya.
Inhloso eyinhloko yalokhu kusungula izinto ezintsha ukukhiqiza i-PGM concentrate esezingeni eliphezulu enokusetshenziswa okuphansi kwe-reagent kanye nomthelela omncane wemfucuza.
4. Ukucutshungulwa kwe-hydrometallurgical: ukuleaching okunembe kakhudlwana
Uma sekutholakale ukugxila, inselele elandelayo ukuhlukanisa iplatinum kwezinye izakhi. Ngokwesiko, ukucubungula i-PGM kuvame ukuhilela ukuncibilikisa i-pyrometallurgical (ukuncibilikisa) kanye nokuhluzwa okulandelayo. Kodwa-ke, izitayela zobuchwepheshe zakamuva ziya ngokuya zishintshashintsha kakhulu, ikakhulukazi ezintweni eziyinkimbinkimbi kanye nezinto eziphinde zasetshenziswa.
Ezinye zezindlela ezibaluleke kakhulu zifaka:
– Ukuhlanzwa okusekelwe ku-chloride: Izinhlelo ze-chloride zingancibilikisa ama-PGM ngokusebenza kahle kakhulu ngaphansi kwezimo ezithile. Ukulawulwa kwamandla e-redox kanye ne-chemistry yesisombululo kuyisihluthulelo sokukhetha i-Pt kunezinye izinsimbi.
– Ukukhishwa kwengcindezi: kwandisa izinga lokusabela kanye nokululama kwensimbi emazingeni okushisa aphezulu kanye nokucindezeleka, okuvame ukunciphisa isikhathi senqubo.
– Izindlela zokususa amagciwane emzimbeni kanye ne-biotechnology: yize zisathuthukiswa ze-PGM, izifundo eziningana zibonise amandla ezinto ezincane noma ama-metabolites azo okusiza ukususa amagciwane emzimbeni, ikakhulukazi esigabeni sangaphambi kokwelashwa kanye nokunciphisa ukusetshenziswa kwamakhemikhali ayingozi.
I-hydrometallurgy yesimanje igcizelela imiklamo ye-closed-loop yokuvuselela izixazululo nokucindezela amanzi angcolile.
5. Ukukhishwa kwe-solvent kanye nama-ion exchange resins ayinkimbinkimbi kakhulu
Ubuchwepheshe bokuhlukanisa iplatinum kusuka ezingxubeni ze-PGM buyisisekelo sokucwenga. Ukukhishwa kwe-solvent (SX) kanye ne-ion exchange (IX) zithuthuka ngokushesha ngenxa yokukhetha kwazo okuphezulu.
– Ku-SX, ukukhethwa okufanele kwe-organic extractant kuvumela i-Pt ukuthi “idluliselwe” isuka esigabeni samanzi iye esigabeni se-organic, bese ihlutshulwa ukuze kukhiqizwe isisombululo esicebile nge-Pt.
– Ku-IX, ama-resin akhethekile angabamba ama-Pt complexes avela kwizixazululo ze-chloride. Ama-resin anamuhla nawo aklanyelwe ukumelana namakhemikhali, amandla aphezulu, futhi avuselelwe kalula.
Izinto ezintsha zakamuva zisekuklanyweni kwezithako zokukhipha ezikhethiwe kakhulu, ukuzinza okuthuthukisiwe, kanye nokuhlanganiswa kwezinqubo ukunciphisa izinyathelo, ukonga amandla, kanye nokunciphisa ukulahleka kwensimbi.
6. Inqubo yokucwenga nokukhiqiza i-platinum powder emsulwa kakhulu
Izimboni ze-elekthronikhi, zamakhemikhali amahle, kanye namadivayisi ezokwelapha zidinga i-platinum ehlanzekile kakhulu. Ukuze kufezwe lokhu, kuthuthukiswe ubuchwepheshe obuningana bokucwenga:
– Ukunisela okukhethekile kwezixazululo ze-Pt ukuze kwakheke usawoti othile (isb. ama-ammonium complexes) abese ehlanganiswa i-calcium ukuze akhe i-Pt powder.
– Ukuwina ngogesi kanye nokuhlanza ngogesi ukuze kukhiqizwe izinsimbi ezihlanzekile kakhulu, ikakhulukazi uma ukwakheka kwesisombululo kuvumela.
– Ukulawulwa kokungcola kwezinga eliphezulu: amafektri esimanje asebenzisa izinto ezifanele zemishini, izinhlelo zokuhlunga, kanye nokuqapha ukungcola okuqinile.
Ikhwalithi yomkhiqizo wokugcina manje isekelwa futhi yizinsimbi zokuhlaziya zesimanje ezifana ne-ICP-MS kanye ne-XRF ukuqinisekisa ukuthi ukungcola okumbalwa kusezingeni eliphansi kakhulu.
7. Ukuvuselela kabusha "njengemayini entsha yeplatinum"
Enye yentuthuko ebaluleke kakhulu ekucutshungulweni kweplatinum ukuthuthukiswa okusheshayo kobuchwepheshe bokuvuselela i-PGM, ikakhulukazi kusukela kuma-catalyst ezimoto asetshenzisiwe (ama-autocatalyst asetshenzisiwe), amadivayisi kagesi, kanye nemfucuza yemboni yamakhemikhali. Ukuvuselela kabusha kuvame ukuba nokuqukethwe okuphezulu kwe-PGM kune-ore, okwenza kube kuhle ngokwezomnotho futhi kube nobungane nemvelo.
Ubuchwepheshe bamuva bokusebenzisa kabusha buhlanganisa:
– Ukwelashwa kwangaphambilini kwemishini okuthuthukisiwe: ukuchoboza nokuhlela ukuze kugxilwe izingxenyana ezicebile nge-PGM.
– I-pyrometallurgy ekhethekile yokuncibilikisa izinto ezilahliwe nokubopha ama-PGM esigabeni sokuqoqa, kulandelwe ukuhluzwa kwe-hydrometallurgical.
– I-hydrometallurgy eqondile enesistimu ye-chloride kanye nokulawula i-redox ukuze kuncibilikiswe i-PGM kahle.
– Ukulandelela kwedijithali kanye nokulawula ikhwalithi: ukulandelela imithombo yezinto ezibonakalayo, ukwakheka, kanye nokukhiqiza ukuqinisekisa ukuvumelana kokuhlinzekwa.
Njengoba izimoto namadivayisi kagesi ekhula, ukuphinda kusetshenziswe kabusha kuzoba yinsika enkulu yokutholakala kweplatinum esikhathini esizayo.
8. Ukwenziwa kwedijithali kwefektri kanye nokusimama kwemvelo
Ubuchwepheshe bamuva abugcini nje ngokusebenza kwamakhemikhali noma imishini, kodwa futhi nendlela amafektri asebenza ngayo. Ukwenziwa kwedijithali kwezitshalo, noma "amafektri ahlakaniphile," kuya ngokuya kuvama ngokusebenzisa:
- Ukulawulwa Kwenqubo Okuthuthukisiwe (i-APC) ukuze kuzinziswe ukusebenza,
- I-Digital twin yokulingisa izinguquko zepharamitha ngaphambi kokusetshenziswa,
- Ukulungiswa kusengaphambili ukuze kuvinjelwe ukwehluleka kwemishini ebalulekile,
– kanye nokuhlanganiswa kwedatha kusukela kokwami kuya komkhiqizo.
Ngokombono wezemvelo, ukugxila okuyinhloko kuncishiswa kokukhishwa kwegesi, ukusetshenziswa kwamanzi okuphumelelayo, kanye nokuphathwa okuphephile kwezindawo zokulahla imfucuza. Izinhlelo zokuvuselela amanzi ngenqubo, ukuqapha ikhwalithi yamanzi ngesikhathi sangempela, kanye namasu okusebenzisa kabusha imfucuza eqinile kuya ngokuya kuthandwa.
Isiphetho
Ukucubungula insimbi yeplatinum okwamanje kuya ezinqubweni ezikhethiwe, ezisebenzisa amandla kahle, nezisimeme. Ukuchazwa kwensimbi okuthuthukisiwe, ukusungula izinto ezintsha zokuntanta, imizila ye-hydrometallurgical esekelwe ku-chloride kanye nokucindezela, ukuhlukaniswa kwe-SX/IX okunembile ngokwengeziwe, kanye noguquko ekusetshenzisweni kabusha kwe-PGM kuyinhliziyo yentuthuko yakamuva yezobuchwepheshe. Kuhambisana nokusetshenziswa kwedijithali kwezitshalo kanye nendlela enobungani nemvelo, imboni yeplatinum ingena enkathini entsha egxile hhayi kuphela ekukhiqizeni nasekuhlanzekeni kodwa futhi nasekusebenzeni kahle kwemithombo kanye nomthelela wemvelo. Ngale nhlanganisela yezinto ezintsha, iplatinum izohlala iyinsimbi ehlakaniphile—hhayi nje embonini yanamuhla, kodwa futhi nakwezobuchwepheshe besikhathi esizayo njengamandla ahlanzekile, ama-catalyst aluhlaza, namadivayisi asebenza kahle kakhulu.
