Loluphi uhlobo lwentsimbi ekrwada oluLufaneleyo iCyanide Heap Leaching?

I-Cyanide heap leaching yindlela esetyenziswa kakhulu kushishino lokutsalwa kwegolide ekusetyenzweni kweentlobo ezithile zentsimbi ekrwada. Ukuqonda iimpawu zeentsimbi ezikrwada ezilungele le nkqubo kubalulekile ekufumaneni igolide ngokufanelekileyo.

1. Ukusetyenziswa ngokubanzi: Iintsimbi zeBanga eliPhantsi

The I-cyanide heap leaching inkqubo ilungele kuphela unyango lwe ore zegolide ezikumgangatho ophantsi, ingakumbi umgangatho ophantsi ore oxidized. Uninzi lwezi ore oxidized zikumphezulu - ores oxidized. Xa kujongwa ubungakanani bamasuntswana entsimbi ekrwada kwinkqubo yokuvuza kwemfumba, intsebenziswano phakathi kwentsimbi nentsimbi. i-cyanide i-ejenti yokuvuza ibuthathaka. Kangangokuba, izinga legolide lokuvuza alikho phezulu njengezinye iindlela zokuvuza, nto leyo ethintela ukusetyenziswa kwayo ikakhulu kwi-ores yomgangatho ophantsi apho iindleko - ukusebenza ngempumelelo kusenokugcinwa khona. Ibakala legolide leentsimbi ezikrwada ezilungele i-cyanide heap leaching ubukhulu becala likuluhlu lwe-1.0 - 3.0 g/t, kwaye kuphela ibakala legolide lediphozithi nganye lingaphezulu kwe-3.0 g/t.

2. Iimpawu zoLwakhiwo lwentsimbi ekrwada kunye noBumeko

2.1 Iimpawu zeGold Particle

• Ilungile okanye iFlethi-Amacandelo eGolide aMilo: Ubungakanani bamasuntswana egolide kwiore ezifanelekileyo bulungile okanye buthe tyaba. Le milo yenza kube lula ukuba igolide ifakwe kwicyanide. Amasuntswana egolide aqingqwe kakuhle okanye amcaba anokuba nonxibelelwano olungcono kunye ne-agent ye-cyanide leaching, iququzelele ukunyibilika kwegolide ngexesha lenkqubo yokuvuza. Umzekelo, kwii-ore ezisasaziweyo ezine-oxidized, igolide ihlala ikhona kumasuntswana amahle asasazwa kuyo yonke i-ore matrix, enceda ukukhupha icyanide.

2.2 I-Porosity kunye nePermeability

• I-Ore eLose, enePorous, kunye ne-Permeable: Intsimbi ekrwada kufuneka ikhululeke, ibenemingxuma, kwaye ingene ngenxa ye-oxidation kunye nemozulu. Ezi mpawu zomzimba ziluncedo kwisisombululo secyanide ukuba singene kwimfumba yentsimbi. Xa isisombululo se-cyanide sinokufikelela ngokufanelekileyo kwigolide-ethwele iiminerali, ukusabela kwe-leaching kunokwenzeka. Iintsimbi ezikrwada ezifana nezo bezisoloko ziphantsi kwemozulu ixesha elide zidla ngokuphuhla ubume obunemingxuma, nto leyo evumela isisombululo secyanide ukuba singene kwaye sinxibelelane namasuntswana egolide angaphakathi.

• Ores ngeGolide eFikelelayo ngokutyumza: Kwi-ores ene-pores ezimbalwa ekuqaleni, igolide inokuvezwa ngendlela yokutyumza. Eli linyathelo elibalulekileyo lamalungiselelo phambi kokuvuza kwemfumba yecyanide. Ngokutyumza, izakhiwo zegolide zangaphakathi ziyaphulwa, okwenza kube lula ukuba i-agent leaching ye-cyanide ifikelele kwigolide. Ezinye iintsimbi eziqinileyo ezinegolide ezitshixelwe ngaphakathi zinokulungiswa ngolu hlobo ukuze zilungele ukuvuzwa kweemfumba.

2.3 Ukuqulunqwa kwemichiza

• Izinto eziphantsi kwe-Acidic kunye nezinto ezingezizo ezisebenzayo: Intsimbi ekrwada kufuneka ingabina okanye iqulathe izinto ezineasidi enganeno kwaye kungabikho okanye izinto ezincinci ezinokusebenza ngecyanide. Izinto ezineasidi okanye izinto ezisebenzayo zinokutya i-agent leaching ye-cyanide. Umzekelo, ukuba kukho inani elikhulu leeminerali ezineasidi kwintsimbi ekrwada, ziya kusabela kunye ne-cyanide, zinciphise inani le-cyanide ekhoyo kwi-leaching yegolide kwaye ngaloo ndlela kuncitshiswe ukusebenza kakuhle kwenkqubo ye-cyanide heap leaching.

• Akukho Gold-Adsorbing okanye Substances: I-ore akufuneki ibe nezinto ezifunxa okanye ezikhupha igolide enyibilikisiweyo. Ukuba izinto ezinjalo zikhona, zinokuthintela ukukhutshwa kwegolide ngexesha lenkqubo yokukhupha i-cyanide heap, nto leyo enciphisa izinga lokubuyiswa kwegolide iyonke. Umzekelo, ezinye ICarbon - iintsimbi ezityebileyo zinokufunxa igolide enyibilikisiweyo - i-cyanide complex, nto leyo ethintela ukucutshungulwa kwayo ukuze ibuyiselwe kwigolide.

3. Iintlobo zentsimbi ekrwada

3.1 Intsimbi ekrwada esasaziweyo

Iintsimbi ezikrwada ezisasaziweyo ezixutywe ne-oxid zikulungele kakhulu ukuvuza kwimfumba yecyanide. Kwezi ore, igolide isasazwa ngokulinganayo kwimo ecolekileyo-ecolekileyo ngaphakathi kwe-oxidized rock matrix. Inkqubo ye-oxidation iye yahlala yenza i-ore ibe yi-porous ngakumbi, kwaye igolide ecolekileyo ifumaneka lula kwisisombululo se-cyanide. Umzekelo, kwezinye iidiphozithi zelitye lentlabathi ezinegolide eziye zatyhubela imozulu yexesha elide kunye ne-oxidation, igolide isasazwa kwi-matrix yelitye lentlabathi, kwaye i-cyanide heap leaching inokukhupha igolide ngokufanelekileyo.

3.2 Intsimbi ekrwada yeSulfide eneGolide engaManyaniswe ngokusondeleyo

Iintsimbi zesulfide apho igolide ingahlali ngokusondeleyo neeminerali zesulfide nazo zinokunyangwa ngokuvuza kwemfumba yecyanide. Kwii-ores ezinjalo, igolide ayibophekanga ngokuqinileyo kumacandelo e-sulfide. Xa intsimbi igrumba - ivuza ngecyanide, icyanide inokukhetha ukunyibilikisa igolide ngaphandle kokuchatshazelwa kakhulu ziiminerali zesulfide. Nangona kunjalo, ukuba igolide inxulunyaniswe ngokusondeleyo neeminerali zesulfide, isulfide inokufuna ukucocwa kwangaphambili (njengokugcadiswa okanye ngebio-oxidation) ukwenza ukuba igolide ifikeleleke ekuvuzeni icyanide.

3.3 Idiphozithi yeGolide yeVein okanye iDiphozithi yeGolide yokuPlakela ngeeNcam zeGolide eziNcinane

Iidipozithi zegolide zevein okanye iidiphozithi zegolide zokubeka ezinamasuntswana egolide amancinci okanye indawo ethile enkulu engaphezulu yamasuntswana egolide ilungele ukuvuza kwemfumba yecyanide. Amasuntswana egolide amancinci anommandla omkhulu wokudibana nesisombululo se-cyanide, esikhuthaza ukusabela kwe-leaching. Kwiidiphozithi zegolide ze-vein, ukuba igolide ikhona ikwimo ecikizekileyo-ecolekileyo ngaphakathi kwesakhiwo se-vein, kunye ne-vein-hosting rock ine-porosity efanelekileyo kunye nokungena, i-cyanide heap leaching ingaba yindlela esebenzayo yokukhupha. Iidiphozithi zegolide ze-Placer, apho igolide iye yachithwa kwaye yachithwa ibe ngamasuntswana amancinci, nayo inokucutshungulwa ngokusebenzisa le ndlela.

Ukuqukumbela, i-cyanide heap leaching yeyona ifaneleka kakhulu kwi-low-grade ores eneempawu ezithile zesakhiwo kunye nezakhiwo, kubandakanya igolide ecolekileyo, i-porosity efanelekileyo, kunye nokungabikho kwezinto eziphazamisayo. Ngokuqonda ezi mfuno zentsimbi ekrwada, imisebenzi yokwembiwa kwemigodi inokwandisa ukusetyenziswa kwemfumba ye-cyanide yokukhutshwa kwegolide ngokufanelekileyo nangeendleko.