Summary: Isikhokhelo esiphelele sokucubungula igolide, sigubha ukwakhiwa kohlala ukusuka ekuhlolweni kuya emsebenzini. Funda ngezindlela eziyinhloko zokucwenga njengokugaywa kwe-cyanid ne-flotation ukuze kutholakale okuphezulu kokubuyiselwa....

Gold Ore Beneficiation Process

Incwadi Yemisebenzi Yokucubungula Ifayela Lezikhukhula zegolide

Le mhlahlandlela inikeza isithombe esiphezulu sezinhlelo zanamuhla zokucubungula igolide, kusuka ekuhlanganiseni nasekuqothuleni kuya ezigidini zokuhlunga ngokuyinhloko.

Kuhlanganisa zonke izindlela ezine ezinkulu zokukhipha igolide: ukuhlukaniswa ngamanzi kwegolide elikhulu leplacer, ukuphezulu kwemfucuza yegolide phakathi nokungaphuzi kwe-sulfide, ukuncibilika nge-cyanide (CIL/CIP) njengendlela ejwayelekile yomgodi ongaphilisayo, nokuhambisa ngendwangu yomgido lapho igolide eliphansi litholwa. Kuphelele futhi nemikhuba engcono yesifunda ye-Afrika, i-Asia Southeast, neNingizimu Melika, kanye nezifundo zomsebenzi wokufakwa kwezihlahla eziphumelelayo.

Landa i-Ebook Ephelele

Ukuqonda Igolide

Golide, insimbi eyigugu futhi ekhanga kakhulu emhlabeni, ibonise ubuthebe kanye nokuqina kusukela ezikhathini zasendulo. Ekutholeni kwanamuhla nasezinhlelweni zezimali, igolide isikhonza hhayi nje njengephetheli yokuhlala kwemali kodwa futhi njengesithako esibalulekile sokukhiqiza kwezokwakha, ukukhiqiza amathotho, nezinkampani zobuchwepheshe obuphakeme. Ukukhula kwayo, ukuncibilika okuphezulu, kanye nokumelana nokugqwala kwenza igolide kube isivikelo esibalulekile sokubuyisa isikhathi eside kanye nokunciphisa ubungozi ekutshalweni kwezimali kokutholwa.

Izimo Zemvelo Zegolide: I-Golidi Eyinhloko Nezinsalela

Iziqholo zegolide zihlukaniswe ezintweni ezintathu eziyisisekelo, ngayinye inezimo zejiologiya ezihluke, amazinga, kanye nezinqubo zokuhlukanisa.

Igolide Elikhulu

Lezi zifakwe ngokuhlanganyela futhi ziqinile ngaphakathi kwamatshe noma emithonjeni ngesikhathi sokwakheka kwezakhi, ngokuvamile zitholakala ezindaweni zokugeza zamatshe, emithonjeni ye-hydrothermal, noma emzimbeni wokuguquguquka.

【I-Vein Golide Deposit】

  • Mineralogy: Igolide ivamise ukuhamba ndawonye nemithambo yequartz, i-pyrite, i-chalcopyrite, kanye ne-sphalerite, ivela njengemithambo emihle noma ama-grains ahlukanisiwe.
  • Izifunda Ejwayelekile: Izitho zeWitwatersrand (eNingizimu Afrika), iKalgoorlie Golide Mine (e-Australia).
  • Process: Primary crushing → Secondary crushing → Ball milling → Gravity separation → Ukwahlukanisa ngokushushuluza → CIP or CIL carbon adsorption

【Imigodi YeGolide】

  • Mineralogy: Igolide iqukethwe ngaphakathi kwezintaba eziqinile, ivamise ukuhambisana nezimayini ze-sulfide.
  • Process: Crushing → Ball milling → Classification → Ukwahlukanisa ngokushushuluza → I-Cyanidation leaching.

【Izinto Zegolide Eziphumelelwe】

  • Mineralogy: Umgodi wegolide ohlonywe kahle ngaphakathi kwezindawo zamatshe, kunzima ukuwabona ngeso.
  • Process: Uhlanga olwakheke kahle kakhulu, ubunzima bokucubungula obuphezulu; kudinga ukwakheka kwe-ultra-fine okudidiyelwe nezinqubo ze-flotation-cyanidation.
Primary Gold

Ugolide Wesibili

Im depozithi ezenziwe ngokuphakama, ukuguguleka, kanye nokuhamba kwem depozithi eziphakamileyo.

【I-Placer Golide Deposit】

  • Characteristics: Amagxolo egolide abonakala njengamakhaza odaka noma ama-flakes amancane, akhanya kalula ngamehlo.
  • Izifunda Ejwayelekile: Amachibi (Ghana), ibhande le-alluvial laseSiberia (Russia), indawo yaseYukon (Canada).
  • Process: U-Jig, itafula elinokudonswa, ukwehlukaniswa kwe-gravity yokucwecwa.

【I-Alluvial Golide Deposit】

  • Mineralogy: Itholeke emithonjeni emidala noma ematsheni e-alluvial, enezinhlayiya ezifanayo.
  • Process: Ibokisi lesluice noma umqoqi we-centrifugal.

【Umphakeli Wegolide We-Laterite】

Tholakala ezindlini zezulu/ezikhalweni; imithombo yensimbi ethambile efanelekile ukuze kube nokumba evulekile.

Characteristics: Ikhwalithi ephansi kodwa izindleko zokumba ziphansi, ezifanele amaphrojekthi okuqala anekhethelo elilinganiselwe.

Secondary Gold
Funda Futhi: I-gold ore - Izinhlobo eziyi-7 nezindlela zokukhipha

Distribution ye-Golide Deposit Emhlabeni Jikelele

Ngokweminyaka ka-2024, ukukhiqizwa kwegolide emhlabeni jikelele kuyi-3,600 tonnes, nezinsiza eziyimpumelelo ezilinganiselwa ku-59,000 tonnes. Izinsiza zegolide ziqinile zikhona futhi ziqinile ezwenikazi ezifana ne-Australia, iRussia, iChina, eCanada, kanye ne-United States. Phakathi kwalokhu, i-Afrika, enezinzuzo zomhlaba kanye nezinqubomgomo zokutshalwa kwezimali ezinhle, seyibe yindawo ekhula ngenani elikhulu lokutshalwa kwezimali emkhakheni wezokumba emhlabeni.

Uhlelo Lokwakha Isikhungo Sokucubungula Igolide

Ukwakhiwa kwesitshalo kuyiphrojekthi eyinkimbinkimbi, enobuchwepheshe obuhlukahlukene edinga imali enkulu nezikhathi zokwakha ezinde. Kumele ilandele ukuhlela okunembe kokuqinisekisa ukuvuma kwezobuchwepheshe, ukukwazi kwezezimali, kanye nokuhambisana ne-ESG.

Gold Processing Plant Construction Workflow

1. Ukuhlola

Objective: Chaza ukusatshalaliswa kwesikhumba se-ore, ibanga, nezinqolobane ukuze kwenziwe izinqumo zesayensi.

Imisebenzi Ebalulekile:

  • Ucwaningo Lwe-Desktop: Hlaziya idatha ye-geological, amashadi, kanye nezincwadi ukuze uthole imigomo.
  • Ukuhlinzekwa Kwamaphuzu Nezivivinyo: Phumelela ucwaningo lwezintaba olwakhiwe kahle.
  • Izifundo zeGeophysical/Geochemical: Sebenzisa amamagnetic/izikhala ze-GPR ukubona imithi.
  • Drilling: Thola izingxenye ezisemqoka zokuhlola nokwakhiwa kwezinsiza.
  • Ukulinganiswa kwezinsiza: Dala ama-2D/3D kwimodeli yokulinganisa usayizi, ibanga, kanye nokusebenza.

Deliverable: Umbiko wezinsiza/mphakathi wezimayini.

2. Ukuhlela & Umklamo

Objective: Dala imigqa yokukhiqiza esebenza kahle, enempumelelo, futhi ephephile.

Imisebenzi Ebalulekile:

  • Izifundo Zokufezekisa: Hlola ubuchwepheshe nezomnotho bokusebenza.
  • Uvumelekile & Ukuxhasa mali: Thola imvume yemvelo kanye nezimali.
  • Idizayini Yemayini: Hlela im infrastructure, izindlela zokufinyelela, izindlela zokumba (ivuleka-pit/yangaphansi), Umklamo Wokukhishwa, Umklamo Wokuthuthukiswa kanye ne-Design ye-Taillings.
  • Ukulungiselela Isiza: Qinisekisa izindlela zokufinyelela, izinsiza, kanye nokususa umhlabathi ophakeme.

Deliverable: Umbiko Wendlela Yokuphumelela, Ukuklama Imayini

3. Ukwakha

Objective: Qinisekisa ukwakhiwa kwekhwalithi ephezulu ukuze kusebenza ngokushesha.

Imisebenzi Ebalulekile:

  • Procurement: Ukuthengwa komhlaba jikelele kwe-crushers, ama-ball mills, ama-flotation cells, ama-thickeners, ama-filters, amapompo, ama-valves, nezinhlelo zokusebenza.
  • Imisebenzi Yezokwakha: Ukuhlelwa kwendawo, imigwaqo, izisekelo zezihlahla, ukwakhiwa kwemishini, umfula wokuvula izimali zokugcina izingozi (TSF).
  • Ukufakwa Kwezinsiza & Ukuqaliswa:
    • Faka futhi ufanise imishini yokuphahlazeka, yokugaya, yokuhlukanisa, yokukhulisa, nokuhlanza ngokwezinqubo zokugeleza.
    • Faka imifantu, kagesi, nezinhlelo zokwenza ngokuzenzakalelayo.
    • Ukuhlolwa kwemishini eyodwa: Qinisekisa ukusebenza kweyunithi ngamunye.
    • Ukuhlolwa komthwalo: Gijima ngensimbi/amanzi, ngokweqile uphakamise ku-capacity yokwakha nezilinganiso.

Deliverable: Implant eseqalisiwe enokudla.

4. Ukusebenza & Ukugcinwa

Objective: Ukusebenza okuphephile, okuqinile, okusebenza kahle, okungalungile.

Imisebenzi Ebalulekile:

  • Imayini ye-Ore & Ukuthutha:
    • Ukubhoboza & Ukuchoboza: Uhlobo lwamatshe lokumba.
    • Ukulayisha & Ukuthutha: Thutha ithonjana engozini ngezikhumulo/amatruck.
  • Ukukhiqiza: Gijima ukubhujiswa, ukugaya, ukuhlukanisa, ukwandisa, ukuhlunga ngokwakhiwa. Phatha amapharamitha abalulekile (nosho lokugaya, umthamo we-reagent, isikhathi sokuhluza, ubukhulu bokuhlunga).
  • Ukugcinwa: Ukuhlola okuqhubekayo, ukugcina, nokushintsha izingxenye ukuhlinzeka ngenkathi yokuphila.
  • Ukwontrola Ikhwalithi: Hlola ukudla, izikhungo, kanye nokugxilisa; lungisa izinqubo ukuze zihlangabezane nezincazelo. Ukuphathwa Kokuphepha: Qalisa ama-protocol, ukuqeqeshwa, PPE, nezinhlelo zokuphendula eziphuthumayo.

Deliverable: Ufeziwe imigomo yokukhiqiza.

5. Ukuthengiswa & Izokwakha

Objective: Ukuguqulwa kwenani okusheshayo, okuphephile, okuphansi kwezindleko.

Imisebenzi Ebalulekile:

  • Izinga Lokuhlola: Ukuhlolwa okuhlanganyelwe/okusunguliwe/ukuhlolwa ukuze kutholakale izinga lokugcina lokuhlala.
  • Isivumelwano Sokuthenga: Izivumelwano zansuku zonke ezisekelwe kum preços wemakethe.
  • Transporta ukugcinwa: Thumela nge-truck/rail/ulwandle ngezinyathelo zokuvikela ukuze kugcinwe ikhwalithi.

Deliverable: Umphumela wezindleko.

6. Ukuphathwa Kwamathala Ne-ESG

Objective: Hlanganisa ukuphepha, ukuziphatha kwemvelo, kanye nokuhambisana nomphakathi.

Imisebenzi Ebalulekile:

  • Ukukhishwa Kwezinsalela: Ithuli elitholakala ngesikhathi sokukhiqiza lidluliselwa ngezinhlelo zokuhamba noma ezinye izindlela liya endaweni yokugcina ithuli (TSF) ukuze ligcinwe.
  • TSF ukuphathwa: Qhubeka uqapha ubuqina bemifula, uku leaking, kanye nekhwalithi yamanzi; ngasikhathi sinye, sebenzisa izinyathelo zokuvikela imvelo ezidingekayo njenge ukufaka ama-liners angangeni manzi kanye nokwakha izikhungo zokuhlunga amanzi angcoliswe ukuze uvimbele ukungcoliswa.
  • Ukusetshenziswa Okugcwele Kwezimfucuza Phinda kabusha noma ngokwehlukanisela kahle i-tailing ukuze ubuyise izinto ezibalulekile, noma usebenzise njengezinto zokwakha, zokugcwalisa izindawo ezikhishwe, njll., ngaleyo ndlela kunciphisa ukuhwalala kwe-tailing, kunciphisa umthelela kwezemvelo, futhi kukhulu ukusetshenziswa kwezinsiza.
  • Ukubuyiselwa Kwezemvelo: Uma sefinyelele emandleni okwakhiwa, vala futhi ubuyise i-TSF ngezindlela zokuvuselela roshakhe nezokubuyisela umhlaba.

Izinqubo Zokuthuthukiswa Kwegolide Ejwayelekile

Inqubo yokukhetha incike kuhlobo lwe-ore, usayizi wokukhululwa, i-mineralogy, nezomnotho. Imigudu eyinhloko ihlanganisa Ukuhlukaniswa kwe-Gravitational, Ukufuthwa, i-I-Cyanidation, kanye Nezinqubo Ehlanganisiwe.

Gold Beneficiation Processes

Ukwahlukanisa ngokushukumisa

Applicability: Ilungile emakhaleni akhishwe ngezimpande nezinsimbi eziyinqaba ezinezindlalifa ezikhulu. Iph需要 njengezinto ezinkulu, umehluko omkhulu wesisindo, kanye nokuphuma okuphansi (isb., ama-alluvial, izikhumbuzo ze-glacial).

Principle: Leverages gold's high density (~19.3 g/cm³) vs. gangue. Separation occurs via fluid dynamics/centrifugal force in gravity concentrators.

Imikhawulo Ejwayelekile:

  • 1.Ukuhlulwa Okuyinhloko & Ukuhlola (ukususa udoti)
  • 2.Ukugxila KweGravity (Spiral Chute / Jig / Shaking Table)
  • 3.Concentrate Upgrading & Thickening → High-grade gold concentrate.
  • 4.I-Tailings: Phinda ulungiselele noma uthumele ku-flotation/cyanidation.

Pros: Izindleko eziphansi, kalula, akukho kemikhali, ukubuyiselwa okuqondile: 85%-90%.

Cons: Ukubuyiselwa okuphansi kwegolide elincane; ukusebenza okulinganiselwe kwegolide elinobumba obuningi noma elimojuliwe.

gravity separation

Ukwahlukanisa ngokushushuluza

Applicability: Indlela eyinhloko yokuthola igolide elijwayelekile / elincane kanye negolide ehambisana ne-sulfide (pyrite, chalcopyrite, sphalerite). Isetshenziswa ku-~20% yamaphrojekthi egolide emhlabeni jikelele ezindaweni zedigrafu noma ezinzima.

Principle: Iziphumo zihluka ekubeni nendawo ye-hydrophobicity. Iziqhumiso (abakhiphi/abakhiphi) zenza igolide/sulfides zibe ne-hydrophobic, zixhunywa kumagagasi omoya ukuze kutholwe i-froth.

Imikhawulo Ejwayelekile:

  • 1.Ukudiliza & Ukugaya (uku -200 mesh, 60%-80% passing).
  • 2.Ukuqopha: Engeza abakhiphi/ababhalani; ukukhiqiza i-bulk concentrate.
  • 3.Ukuhlanza: Thuthukisa umkhiqizo we-concentrate.
  • 4.Ukuphanga: Thola igolide elisele kwi-tails. 5.I-concentrate: Ukuphosa ngqo noma i-cyanidation.

Pros: Impumelelo kwi-gold eyinhlobonhlobo/eyigxile.

Cons: Ikhulu; idinga amakhemikhali; izindleko eziphezulu zokusebenza & ukulawulwa kwemvelo.

flotation

I-Cyanidation

Applicability: Inqubo yokukhipha igolide emhlabeni etholakalayo (>90% yegolide). Ifanele izinto eziningi, kuhlanganise ne-oxides eziphansi, igolide elihle, kanye ne-flotation concentrates.

Principle: Ibhodi lincibilikile kusefani se-alcaline cyanide ukwenza [Au(CN)2]- complex. Ibuyele nge-carbon adsorption (CIP/CIL) noma ukuncibilika kwe-zinc.

Imikhawulo Ejwayelekile:

  • 1.Ukuphuca & Ukugaya (uku-200 mesh, 80%-90% passing).
  • 2.UkuLeaching kweCyanide (CIL/CIP): Ibhodi lincibilikile emanzini.
  • 3.Adsorption/Elution: I-activated carbon ibamba ibhodi eliyinkimbinkimbi; ikhululiwe & ikhokhisiwe ukuze ibe yithuli le-gold.
  • 4. Smelting → High-purity gold.

Pros: Ithanda ubuchwepheshe; ukuphuma okuphezulu (90%-97%); ukufaneleka okubanzi.

Cons: ICyanide enobuthi (ukulawulwa kwemvelo okuqinile); ifuna ukwelashwa kwemvume yokusebenza kwamakhemikhali/arsenical (ukubilisa/POX).

cyanidation

Ukuthola kweHeap (Ukumbiwa kwezinsiza nge-Cyanide Heap Leach)

Applicability: Imaminerali ephephile ye-oxide (okuvamile 0.5-1.5g/t) enegolide eyakhelwe kahle. Ifuna ukungena kahle (amakhla aphansi). Izinhloso: I-ROM ephephile, udoti, ama-tailing amadala.

Principle: 10000 Tons Heap Leaching Design For Golide Dilute NaCN solution trickles through stacked ore. Golide dissolves into solution via reaction: 4Au + 8NaCN + O2 + 2H2O → 4Na[Au(CN)2] + 4NaOH Pregnant solution collected; gold recovered via carbon adsorption → elution/electrowinning.

Pros: Ukwehliswa kwe-CAPEX/OPEX, amandla aphansi; izinqubo zekhwalithi ephansi; flexible/scalable.

Cons: Ukululama okuphansi (60%-85%); umzuliswano mude (amasonto/izinyanga); ukugeleza kwemali okuncane kancane; okuthinteka yisimo sezulu (banda / imvula); ukumelana nokungena okubalulekile; izingozi zemvelo.

cyanidation

Inkokhelo Yezindleko Ngemuva Kwenziwa Kwenzuzo

Ukukhulisa inani leziqu ngokuvuselela i-ore ephansi ibe yimikhiqizo eyinani eliphezulu. Imodeli zebhizinisi ezivamile:

Ukuthengisa I-Golide Concentrate: Ukuthengiswa ngqo kubashisi. Isikhathi semali esifushane; kugwema ubungozi bokushiswa (kufaneleka kakhulu kwizinhlelo zokuqala ezibhekene nezimali ezinqunyiwe).

UKuthengiswa Kwegolide Dore/Ingots: On-site smelting/refining → sell standard ingots. Maximizes profit margin; stronger pricing control.

Ukucubungula Izinkokhelo: Thumela i-concentrate/dore ku-smelter ukuze icutshungulwe (khokha Imali); gcina ubunikazi & ukuguquguquka kwemakethe.