Iyini imiqondo emi-2 phakathi kwegolide ye-Placer kanye negolide ye-Lode?

Isiphetho:Igolide ye-Placer, egxilile emifuleni, ikhishwa ngendlela elula yokuhlukaniswa kwezimali. Igolide ye-Lode, egciniwe edwaleni elinzima, idinga ukucubungula okuningi kwezinto ezikhemikhali. Ukuhlukana kwazo kuchaza ucwaningo, izindlela zokumba, nezindleko emkhakheni wegolide.

IGolide, njengensimbi eyigugu enenani eliphezulu lwezomnotho kanye nezicelo zezimboni, ifunwa ngabantu kwem લગ્ન ezinkulungwaneni zeminyaka. NgokwezeMhlaba, amakhona egolide ahlukaniswa ngezigaba eziyisibili eziyinhloko ngokuya ngezindlela zawo zokuphuma: igolide le-placer kanye negolide le-lode (eyaziwa nangokuthi igolide le-vein). Nakuba kokubili kuyimithombo yemvelo yegolide, zihlukile kakhulu ngokwakheka kwezeMhlaba, izici zokuphuma, izindlela zokumbiwa, izinqubo zokukhishwa kwegolide, kanye nezinzuzo zezimali.

Igolide elihlotshwe lisagcinwe ngaphakathi kwezindlalifa zomphakathi ezidinga ukucutshungulwa kwezobuchwepheshe obuphambili, igolide elitholakala emigodleni lidlula ekukhululweni okwenziwe ngokwemvelo ngezimo zokuguguleka, kuvumela izindlela zokwahlukanisa eziyinqaba. Ukuqhubeka kwezobuchwepheshe ukusuka ezinqubweni zokuphonsa ezindala kuya ezinqubweni zamanje zokucubungula ngesigubhu se-cyanide kanye nezindlela ze-carbon-in-pulp kuveza ukuthuthuka okukhulu ekusebenzeni kokubuyiselwa kwegolide nasekuphathweni kwemvelo. Ukuqonda lezi zinguquko kubalulekile ekuhloleni izinsimbi, ekuhlelweni kokusebenza kwemigodi, nasekuthatheni izinqumo zokutshalwa kwezimali embonini yokukhiqiza igolide.

Incazelo: Yini iPlacer Gold kanye neLode Gold?

1. Ukuvumelana Kwegolide Lode (Izenzo Zangaphakathi)

Impahla ye-gold ye-lode ivela ezinqubweni ze-hydrothermal ezijulile ngaphakathi kwe-crust yoMhlaba. Izinsiza ezicebile ngamakhemikhali, ngokujwayelekile zishiswa ziye ku-150°350°C, zihamba ngokwehliswa nokuphuka. Njengoba izimo ze-physicochemical zishintsha—ngokuvamile ngenxa yokwehla kwengcindezi, ukujula, noma ukuhlangana kwezinsiza nezintaba—i-gold ibonakaliswa ngasohlangothini lwe-quartz kanye nezinsiza ze-sulfide. Lezi zinqubo ze-hypogene zakha izinhlobo ezahlukene zemigodi:

• Imithombo ye-quartz-vein:Igolide ezindaweni eziqhuqhuqhelekayo zezitini.
• Izimfanelo ezihanjiswe (uhlobo lwe-Carlin):I-golide yokubona ngeso elincane emadwaleni amatshe athile.
• Izinkunzi ezinkulu ezihambisana ne-sulfide:Igolide kumasampula angama-volcanogenic amaninzi.

Izibalo ze-epithermal zenzeka ezindaweni ezijulile (<1 km) ngokwakhiwa kweminera enezinga lokushisa eliphansi, kanti izibalo ze-mesothermal (okwakhiwa ngenxa yezintaba) zisebenza ezindaweni ejulile kakhulu ngokwakhiwa okuneshisa okuphakathi. Uphawu oluhlukile lwe-geohemistry lwezibalo ngalunye luhola imizamo yokuhlola nokucubungula.

2. Ukuqhamuka Kwegolide E-placer (Izinqubo Zezulu)

Izindawo zokufaka zenzeka ngokuhlukaniswa, ukugqwala, nokuhlunga kwezimbiwa ezikhona ngokuya ngokukhuphuka komhlaba. Le nqubo ilandela izigaba ezilandelayo:

• 1. Ukuvuvukala komhlaba kukhombisa izithwathwa ezinegolide ezimweni zokuphila.
• Ukukhubazeka kwekhemikhali kwamatshe omphakathi kukhulula amakhaza egolide.
• 3. Ukuthutha nge-hydraulic ngamanzi namachibi kuhambe izinto ezilula phansi.
• 4. I-gravitational concentration ibeka ama-particles egolide anendawo ezinzima edabula:
  • Izigaba zangaphakathi zethafa (amaphoyinti amabhange)
  • Ngemva kwezithiyo ze-bedrock
  • Eminyakeni evulekile yezimpawu ezishisayo
  • Ezindaweni ezindala zomfula nasemachibini olwandle

Ubukhulu obuphezulu begolide (19.3 g/cm³) buqinisekisa ukuhlinzekwa kahle kwemvelo, kuvamise ukwandisa amazinga aphindwe kayishumi uma kuqhathaniswa nezintaba ezikhiqizayo. Usayizi wezinsalela uzuze ukusuka ku "golide yokuphuma" (≤0.1 mm) kuya kumagagasi amangalisayo agqokile angaphezu kwezikhilogramu eziningi.

3. Igolide ye-Placer Vs Igolide ye-Lode: Ukuqhathaniswa Kwezici Zobuchwepheshe BezeNzalo

Iholo Losha LwamaGoli Vs Igolide Elikhulu: Ukwenziwa Kwezokumbiwa Nokukhishwa Kwegolide

Izinhlelo ezahlukene ezitholakala endlini ye-geological phakathi kwe-plaser gold kanye ne-lode gold zidalela umehluko omkhulu ezinqubweni zabo zokumba kanye nezinqubo zokukhipha igolide. Ukumba i-plaser gold ngokujwayelekile kulula futhi akudingi imali eningi, kanti ukumba i-lode gold kudinga ubuchwepheshe obuphambili kakhulu kanye nokutshalwa kwezimali okuphezulu kokuqala.

1. Igolide Yezindawo: Ukumba Nokukhipha

Ubuciko bokumbiwa kwegolide ye-placer bukhona ekwehlukanisweni komkhiqizo wegolide ngenxa yokuphakama kwayo kwe-densitiy (okuphakeme kakhulu kune-sand ne-gravel). Inqubo yonke ayihlanganisi nokuqhafaza kwemichiza eyinkimbinkimbi, futhi nakuba ubuchwepheshe busho ukuba bendabuko, bungaba sezingeni eliphezulu kakhulu futhi bungakhula.

Inqubo Eyisisekelo: Ukuhlukaniswa Kwamandla Okukhuphuka

Lena inhliziyo yokuphuma kwegolide le-plaser. Zonke izindlela zigxile emgomeni oyinhloko: ukusebenzisa ukugcoba nokuhlanganiswa kokugeleza kwamanzi ukuvumela amabhola egolide ayinsimbi ukuthi ahlale, kuyilapho udoti olungandla luhlanjululwe.

• Iphini Lwegolide LesizweIndlela endala kakhulu nephumelela, ethembela ngokuphelele ekushayeni ngezandla nasemanzini, efanelekayo emisebenzini emincane noma ekuhloleni.
• Ibhokisi lokukhipha amanzi:Ithangi eliphambanisa linemigqa elukhuni ebhalwe "ukuvimba ukuhamba" (njengoba izindwangu noma uphahla lwezinkuni). Njengoba i-slurry ingeza, amaphuzu egolide abanjwa ezikhungweni phakathi kwemigqa. Ukusebenza kahle kakhulu, lokhu kwaba yindlela eyinhloko ezinsukwini zokuqala.
• Jig: IjigUkuphuma kwamanzi okukhazimulayo kubangela ukuthi imayini iphinde iphakame futhi ihlale esikrinini, iyahlukaniswa ngokuya ngesisindo. Izinsimbi ezinzima (igolide) zihlala ezansi futhi zikhishwe.
• Ithebula Elivunguzayo:Ephahleni eliphakeme, elihambelanayo elivibrayo, ukuhamba kwamanzi nokuvuvukala kuhlukanisa kahle amaminerali ngokuya ngesisindo nosayizi, okuholela ekwahlukaniseni okunembile kakhulu. Kuvame ukusetshenziselwa ukuprocessing amaminerali alula.

Izindlela zesimanje zokumba

• Ukwakha Ngemifanekiso Yedrone:Kwembombo ezinkulu zemifula noma izinto zokugcina zegolide ezindaweni ezindala zemifula, ukusebenzisa izikebhe ze-drone ezihlanganisa ukumba, ukupholisa, ukwenza ngcono, nokukhishwa kwezingxenye ezisele kuyindlela enembile kakhulu.
• I-Hydraulic Mechanical Mining:Ukusebenzisa amanzi anomfutho ophakeme ukuze aphule isihlabathi somgodi, akha i-slurry, eyethulwayo kuhlelo lokuthuthukiswa (njengama-sluices noma ama-jigs) ukuze luthathwe. Kufanele kumagodi ane-tilt ethile.
• Ukutholwa Kwezinsiza Zokumba Okunokhonkolo Olwakhiwe Kwangaphandle:Fana nokuqhazimula kokumba, ama-excavator kanye nama-bulldozer asetshenziselwa ukuhamba komhlaba, futhi insimbi ithunyelwa ngamatru kwaya efekthri yokuwasha nezokuthuthukisa enezindawo ezithile ukuze iphuhliswe indawo eyodwa.

2. Ugolide: Ukukhishwa Kwegolide Nokumba

Ukucwila kwegolideiyinkqubo enkulu, enezinhlobonhlobo, futhi eyinkimbinkimbi yokwakha izimboni. Ngoba igolide "ivaliwe" ezingeni eliphansi kakhulu phakathi kwezinsimbi eziqinile, kufanele ihluke ezinqubweni eziningi ukuze ikhishwe.

2.1 Izinhlelo Zokumba

Ukumba Phansi:Ukuze kudalwe izinqolobane ezinzulu, ezisezingeni eliphezulu, kumele kudilizwe izinqaba neziteshi ukuze kusebenza phansi emhlabeni. Le ndlela ibi kakhulu futhi ibiza kakhulu.

Ukumbiwa Kwamafutha Akhulu:Ezimayelana nezindawo ezinzima ezinkulu, ukumbiwa kwezikhala kuvula ngqo umhlaba ophansi futhi itshe, kunezinga eliphezulu lokusebenza kanye nezindleko eziphansi.

2.2 Inqubo Yokukhipha Ijazi

• Ukuphonsa nokugaya:Amablokhi amakhulu we-ore ayacrushwa futhi aphakwe abe ngumkhiqizo ophakathi (ivamise ukuba nezinhlamvu ezinjengefulawa) ukuze "kukhululwe" amaphuzu egolide, ekhupha kuxhaswe yitshe.
• Inqubo ye-Cyanide (Inqubo ejwayelekile)Pulver umhlanga omncane uxutshwa nesixazululo esisezingeni eliphansi se-sodium cyanide. Ngaphansi kokuhlinzwa, igolide iyaphendula ne-cyanide, ikhuphuka ibe yilolu xazululo ukuze kudaleke "isixazululo esiyigugu." Bese, izindlela zokuhamba kwegolide ezisebenzisa i-activated carbon adsorption noma i-zinc powder displacement zisetshenziselwa ukukhipha igolide kulolu xazululo. Lokhu okwamanje kuyindlela elula kakhulu futhi esebenzayo yokucubungula igolide le-lode (ikakhulukazi umhlanga ophansi).
• Ukukhukhumala:Emaphakathi lapho igolide ixhumene kakhulu nezakhi zomhlaba ze-sulfide (njenge-pyrite), kuvame ukusebenzisa ukuhluza. Ngokungeza izinto zokwakha, imithombo eqhudelene negolide ibamba kuziphuphuthe eziyizikhukhula futhi ibhulephu yenze ibe phezulu, ikhiqiza umkhiqizo wegolide onekhwalithi ephezulu. Lo mkhiqizo uthathwa nge-cyanide noma ushiswa ngqo.
• Ukwehlukaniswa kweGravity:Le ndlela ibuyisela emuva izingcezu zegolide ezikhululiwe ngesikhathi sokuqala inqubo yokugaya (isb. ngokusebenzisa ama-jig noma amatafula aphumayo) ukuvimbela ukugaya ngokweqile noma ukulahleka ezinqubweni ezilandelayo. Ivame ukusetshenziswa njengenqubo yokweseka.
• Ukwengeza kweHeap:Ngokwezingxenye eziphansi kakhulu ze-oxide ores, umlotha uyacindezelwa ube ngosayizi othile, ubekwe phezu kwematte engangenisi, futhi isixazululo se-cyanide sithululelwa phezulu naphakathi. Isixazululo segolide esixutshwe siqoqwa ezansi kokuqinisa ukuze sibe neminye imisebenzi. Le ndlela inezindleko eziphansi kodwa inezidingo mayelana nohlobo lwe-ore.

2.3 Ukuhlola Okokugcina:

Noma yisiphi isinyathelo esisetshenziswe, igolide elitholiwe ngokuvamile liqukethe izinto ezingezinhle ezifana nesiliva nekhopha, futhi libizwa ngokuthi "igolide elihlanganisiwe." Ukuze uthole igolide eliphelile elinokuhlanzeka okuphakeme (njengokwe-99.99% nangaphezulu), kudingeka ukusulwa kwe-elektrolytic noma ukusulwa kwekhemikhali.

3. Isifinyezo Sokuhlola: Ukumba Igolide yePlacer vs. Ukumba Igolide yeLode

Ukuhlaziywa KwezeMali Okuph сравнива: Ukumba Igolide ye-Placer vs. Ukumba Igolide ye-Lode

1. Ukuqhathaniswa Kwesakhiwo Sezindleko

Izindleko Zokuhlola Igolide yePlacer

• Ukutshalwa Kwezimali (CAPEX):Phakathi. Nakuba amapulethini amakhulu anokufuna ama-dollar ayizigidi ezingu- tens, i-CAPEX ivamise ukuba phansi kunesigaba somsebenzi sogold esihlobene.
• Izindleko Zokusebenza (OPEX):Ikakhulukazi iphushwa ngamakhemikhali, ukugcinwa kwezinsiza, nomsebenzi. Ngenxa yokusebenza okunembile kokuphosa, izindleko zokucubungula zendawo zisezingeni eliphansi.
• Izindleko Ezijwayelekile:Izindleko zokukhiqiza zonke ngokuvamile zihlala zilinganiselwa phakathi kwama-USD 800 kuya kwama-1,200 ngendawo, nokho ukusebenza okuhamba kahle kakhulu kungafinyelela izindleko ezingaphansi kwama-USD 600/ngendawo.
• Izinto Eziholela Ezindlekweni:Isikali sokufaka, usayizi wepulasitiki wegolidi, kanye nobudlelwano bezikhala (ubudlelwano bokuphakanyiswa kumathafa akhokhelwayo).

Iphrofayela Yenkcitho Yokumba Igolide yeLode

• Ukutshalwa Kwezimali (CAPEX):Kuphezulu Kakhulu. Ukutshalwa kwezimali kokuqala emadwaleni aphakathi nendawo kuvamise ukufinyelela ezinkulungwaneni zamadola, kwesinye isikhathi kuze kube yizigidi zamarandi.
• Izindleko Zokusebenza (OPEX):Kuphithizela futhi kuyinkimbinkimbi, kufaka phakathi izindleko zokumba, ukupholisa, ukugaya, izithako zemichiza, ukuphathwa kwezitshalo, nokunye okwengeziwe.
• Izindleko Ezijwayelekile:Izindleko Zokugcina Eziphelele (AISC) ngokuvamile zihlala zisesilinganisweni se-USD 1,000 kuya ku-1,400 nge-ounce, ngemigodi ejulile engaphansi komhlaba ivame ukudlula lesi silinganiso.
• Izinto Eziholela Ezindlekweni:Umkhiqizo we-ore, ukujula kokwembiwa (ivulandi vs. ngaphansi), ubunzima be-ore (ukwandiswa), kanye nobunzima bokumaka (ukusebenza okungavikeliwe vs. i-ore ethuthukisiwe).

2. Izinga Lokuphumelela Komnotho

Igesi leZ gold deposits

• Isidingo somsebenzi:Phansi kakhulu. Ngoba ukweba kuqondisisa izinsalela ezingaqinile, imisebenzi enkulu ingahlala ifinyeleleka kahle noma nini ngezinga eliphansi njenge 0.1 kuya ku-0.3 amagremu ngencitho.
• Isikhawu Sokulinganisa:Isitokisi esikhulu se-placer ngokuvamile sinezinto ezingaphezu kwe-8 ton (cishe ama-260,000 ounces) zegolide.
• Izinto Zezimali Ezibalulekile:Umthamo wokuph обработки (amakhubeji/ ngosuku), ukusebenza kahle ekubuyiseni, kanye nokufinyeleleka kwesizinda/izakhiwo.

Izindawo Zegolide ezikhokhelayo

• Isidingo somsebenzi:Kakhulu kakhulu kunemali yerhasi. Imigodi evulekile ngokujwayelekile ifuna izinga eliphezulu kwe-0.8 ukuya ku-1.0 igremu nge-tonne, kanti imigodi engaphansi komhlaba idinga izinga eliphezulu kakhulu (njalo >3 kuya ku-5 g/t).
• Isikhawu Sokulinganisa:Imfucumfucu enkulu ivamise ukuqukatha ngaphezu kwama-20 tonnes (cishe ama-645,000 ounces) egolide.
• Izinto Zezimali Ezibalulekile:Ithuba eliphelele leziqhamo, izinga lokubuyiselwa kwezinsimbi, kanye nesimo sezinsiza ezikhona (amandla, amanzi, ukuthutha).

3. Imakethe kanye Nokuzwela KwezeMali

Ukwazisa Ngamanani WezGold:

• Izindawo zeZinkanyezi zeGoli:Ngokwezimali eziphansi nezikhawulelwe, ziqinile kakhulu ekwehleni kwezimali zegolide. Imigodi ye-plaser yegolide eminingi ikwazile ukugcina ukusebenza ngisho noma amanani egolide ephansi kuka-$1,200/oz.
• Iphrojekthi zeGolide zeVessel:Ikakhulu amamayela aphakeme ezindleko, akwaziwa kahle kakhulu ukujwayela ukushintsha kwezindleko zegolide. Ukuhwebelana kwezindleko zegolide kungaholela ekuphakanyisweni kwamamayela aphakeme ezindleko.

Izici Zokubuyiselwa Kwezimali:

• Izindawo zeZinkanyezi zeGoli:Ngokuvamile banezikhathi zokwakha ezimfishane (1-2 iminyaka) nokubuyiswa kwemali ngokushesha, kodwa isikhathi sokuphila kwezinsalela sifushane (vamile 5-15 iminyaka).
• Iphrojekthi zeGolide zeVessel:Izikhathi zokwakha ezinde (3-5 iminyaka) kanye nokubuyiswa kokutshalwa kwezimali okuhamba kancane, kodwa ama-deposit amakhulu angaba nezinsizakalo eziphakeme ezingaphezu kweminyaka engu-20.

Ukuhlanganiswa Kwezingozi:

• Izingozi Eziyinhloko zePlaceholder Gold:Ukungaqiniseki kwezinsiza (ukusatshalaliswa okungalingani kwegolide), imvume yezenhlalakahle, kanye nomthelela wokushintsha kwesimo sezulu ku-hydrology.
• Izingozi Eziyinhloko Zegolide Yezinkanyezi:Izingozi zejoloji (ukwehluka kwesigaba), izingozi ze-metallurgical (umthamo wokubuyiswa), izingozi zezepolitiki, kanye nokwehluka kwezintengo zemakethe.

Izitayela Zesikhathi Esizayo Nezinguquko Zobuchwepheshe

Izigameko Eziphakathi Kwezemali Zokumba Igolide Lezinkanyezi:

• Ubuchwepheshe Bezehlakalo eziphelele:Ukusebenzisa i-radar ethonywayo emhlabeni kanye nezindlela zokwenziwa kwe-elekthronikhi ukuze kutholakale kahle kakhulu imifantu yamanzi yakudala.
• Imishini Yeselula Ehlukanisayo:Ukunciphisa umkhondo wemvelo nokwandisa ukwabelana kokusebenza.
• Ukubuyiselwa Kokhulu Kwegolide Okuphumelelayo:Izinsiza ezintsha ze-centrifuge kanye nemishini yokuhlunga zithuthukisa izinga lokubuyiswa kwegolide eliphezulu.

Imingcele kuMkhakha Wokumba Igolide Emathunjini:

• Ukuzenzakalela nokudijithali:Izingozi ezingenamshayeli, ukusebenza kude, ukuhlukaniswa kwe-mineral kusekelwe ku-AI.
• Izobuchwepheshe Ze-Metallurgical Eziluhlaza:Ukuthuthukiswa kwezinkinga ze-cyanide (njenge-thiosulfate), ubuchwepheshe bokubola bempilo.
• Ukuvuselelwa Kwezemvelo Kwezinsiza:Ubuchwepheshe bokubuyisela igolide emadlalweni aphansi okuphumelela nasezindaweni ezisawolayo.
• Izitayela Jikelele:Zonke izindlela zokumba ziya emnyango ophumelelayo, ongcono kwezokEnvironment, nasekuthuthukiseni umphakathi. Ngokuphela kwezinsiza ezifinyelelekayo, ukuhweba nobuchwepheshe kuzoba yinsika yokugcina ukuhlala kwempahla yegholide.

Igolide yeplaser neye-lode yizigaba ezimbili ezihlukeneyo zezimali zegolide ezinokwehluka okukhulu emikhakheni yokwakhiwa kwejeologi, izimfanelo zokwenzeka, izindlela zokuthola, izinqubo zokukhipha, kanye nezinzuzo zomnotho. Igolide yeplaser, njengezikhala zesibili, ihlukaniswe ngokwenzeka kwayo ezindaweni ezithambile, ukukhululwa okuphezulu kwezigxivizo zegolide, kanye nezindlela zokuthola nezokukhipha ezilula, okwenza ihlakaniphe kakhulu ezinqubweni ezincane nezisebenza ngentengo ephansi. Igolide ye-lode, njengokwakhiwa kokuqala, ifakwe edwaleni elinzima, idinga ubuchwepheshe obunzima bokuhweba nokukhipha, futhi ibandakanya izindleko eziphezulu zezimali nezokusebenza, kodwa inikeza inzuzo yesikhathi eside ezinqubweni ezinkulu.

Ukuqonda lezi zinqondo kubalulekile kumafemu okumbiwa kwegolide, abatshalizimali, kanye nabaphathiswa bezinhlaka. Ezindaweni ezinezimali ze-placer ezifinyelelelekayo, ukutholwa kwegolide okuncane kungahlinzeka ngamathuba omnotho emiphakathini yasendaweni. Ekukhiqizeni okukhulu kwegolide, imikhumbi yegolide iyona ndawo eyinhloko yokuhlinzeka ngegoli emhlabeni, kodwa idinga ukuhlela kahle ukuze kulawulwe imiphumela yokusingatha kanye nezingozi zokusebenza. Njengoba isidingo segolide siqhubeka sikhula, ukukhangwa nokuthuthukiswa kwezimali ze-placer kanye ne-lode kuzoba nezindima ezibalulekile embonini yegolide yomhlaba, ngezinga eliqhubekayo lokuphuculwa kobuchwepheshe okuhloswe ngabo ukuthuthukisa ukusebenza kokumbiwa, ukuthuthukisa imiphumela yokusingatha, nokwandisa ukusimama komnotho.