Kugadziridzwa kweSodium Cyanide Leaching muGoridhe-Mhangura Ores

ziviso

Kubviswa kwegoridhe nemhangura kubva kugoridhe-copper ores inzira yakaoma. Cyanidation, kunyanya kushandisa Sodium Cyanide, yagara iri nzira huru yekuchera goridhe. Nekudaro, kuvepo kwemhangura mune aya ores kunounza matambudziko akakura kune cyanidation process, inokanganisa kudzoreredza kwegoridhe uye. cyanide kushandiswa. Iyi blog positi inoongorora mune optimization yesodium Cyanide Leaching mune goridhe-mhangura ores, kuongorora ari pasi pemisimboti, matambudziko, uye mhinduro itsva.

Nheyo dzeCyanide Leaching

Cyanide leaching inotsamira pane yakasarudzika kugona kweiyo cyanide ion kuumba yakagadzika ma complex ane goridhe nesirivha. Sodium cyanide, inonyungudika zvakanyanya mumvura uye yakagadzikana, inoshanda seyekutanga lixiviant. Kana yanyungudutswa mumvura, inoburitsa cyanide ions. Aya maion anoita negoridhe muhupo hweokisijeni kuburikidza nemaitiro e electrochemical. Goridhe rinotanga kugadzirwa oxidized yobva yasungwa neiyo cyanide kuti iite soluble complex, ichibvumira kutorwa kwayo kubva kune ore.

Matambudziko Anoitwa neMhangura muGold-Copper Ores

Kuwedzera kweCyanide Kushandiswa

Mhangura mugoridhe-mhangura ores inopindirana necyanide kugadzira akasiyana siyana emhangura-cyanide. Kune yega yega 1% yemhangura inoshanda iripo, ingangoita 30 kg/t yeNaCN inogona kudyiwa. Kushandiswa kwakanyanya uku hakungokwidziri mitengo yekushanda kweiyo cyanidation process asi kunodawo kungwarira manejimendi ekushandiswa kwecyanide.

Kudzivirirwa kweGoridhe Leaching

Yakanyanya kuwanda yemhangura-cyanide complexes mune leaching mhinduro inogona kuderedza kunyungudika kwegoridhe. Uyezve, mhangura ine tsika yekuumba passivation layers pamusoro pezvikamu zvegoridhe. Aya maturu anoita sezvipingamupinyi, achidzikisa kusangana pakati pegoridhe uye cyanide ions uye nekudaro zvichitadzisa maitiro ekubvisa.

Matanho eKukwirisa Sodium Cyanide Leaching muGoridhe-Mhangura Ores

Pretreatment of Ores

• Kuparadzana Kwenyama: Tekinoroji senge giravhiti kupatsanurwa, kuyerera, kana kupatsanurwa kwemagineti inogona kuiswa kune pre-kunangisa ore. Nekusarudza kubvisa chikamu chakakosha chemaminerari emhangura isati yaitwa cyanidation, nzira idzi dzinodzikisira zvemukati zvemhangura mune izvo zvinozoitwa leaching. Semuenzaniso, flotation inogona kuparadzanisa zvicherwa zvemhangura sulfide kubva kune goridhe-inotakura ore, kuderedza kupindira kwemhangura panguva yecyanidation.

• Oxidative Pretreatment: Maitiro eOxidative akadai sekugocha, bio-oxidation, kana pressure oxidation inoshanda mukupwanya zvicherwa zvesulfide uye kusunungura goridhe rakavharirwa. Muchirevo chegoridhe-copper sulfide ores, oxidative pretreatment haingowedzere kudzoreredza goridhe chete asi zvakare inoderedza kukanganiswa kwemhangura pacyanidation. Kugocha, semuenzaniso, kunoshandura zvicherwa zve sulfide kuita ma oxides, zvichiita kuti goridhe riwanikwe nyore kune cyanide leaching process.

Maitiro Parameter Optimization

• Cyanide Concentration: Kuona iyo yakanakira cyanide kusungwa kwakakosha. Nepo kuwanda kwepamusoro kunogona kuwedzera kunyungudika kwegoridhe, zvakare kunotungamira mukunyanya kushandiswa kwecyanide, kunyanya pamberi pemhangura. Mutoo wakadzikama unodiwa, uye mune zvimwe zviitiko, kushandisa yakaderera cyanide concentration pamwe chete nezvimwe zvinowedzera zvinogona kuunza mhedzisiro iri nani.

• pH Kudzora: Kuchengeta iyo chaiyo pH nhanho (kazhinji yakatenderedza 9 - 12) mune leaching mhinduro yakakosha kune cyanidation maitiro. Mugoridhe-copper ore leaching, kugadzirisa pH kunogona kubatsira kudzora kunyungudika kwezvose zviri zviviri mhangura negoridhe. Kudzikisa zvishoma pH dzimwe nguva kunogona kuwedzera goridhe leaching nekudzvinyirira mhangura leaching.

• Tembiricha uye Agitation: Kusimudza tembiricha kunogona kukurumidzira iyo cyanide leaching reaction, asi ine miganhu yayo. Kupisa kwakanyanya kunogona kuwedzera cyanide volatility uye kumhanyisa oxidation yayo kuita zvinhu zvisingaite. Kusuduruka kwakaringana kunodiwa kuti uve nechokwadi chekubatana kwakanaka pakati pezvimedu zveore, cyanide solution, uye oxygen. Nekudaro, kushushikana kwakanyanya kunogona kukonzera kupfeka zvakanyanya uye kubvaruka pamidziyo.

Kushandisa Additives

• Amoniya: Kuwedzera ammonia kune cyanidation process inogona kubatsira kubata mhangura nekugadzira yakagadzikana macomplexes nayo. Aya macomplexes anodzivirira kuumbwa kwemamwe makomisheni emhangura-cyanide anodzivisa kuparara kwegoridhe. Nekudaro, kushandiswa kweammonia kunoda kunyatsotariswa nekuda kwehupfu uye kusagadzikana, izvo zvinokonzeresa njodzi kwezvakatipoteredza.

• Glycine: Tsvagiridzo yenguva pfupi yapfuura inoratidza kuti glycine inogona kushandiswa pamwe neyakaomeswa yakaderera yecyanide kuburitsa goridhe, sirivha, uye mhangura kubva mugoridhe-mhangura ores. Glycine complexes nezvose zviri zviviri cupric uye cuprous ions, inosimudzira kunyungudika kwemhangura, uye inogona kunyungudutsa mativi epasi pegoridhe nemhangura. Iyi nzira inogona kuderedza zvakanyanya kushandiswa kwecyanide ne75%.

Case Studies

A Japanese Mining Operation

Kambani kadiki kekuchera muJapan kaishanda pakuwedzera kudzoserwa kwegoridhe kubva mumhangura ine mhangura vachishandisa cyanidation. Muchirongwa chekare checyanidation nematani 800 eguruva (goridhe rakatorwa), vakawana 1.3 kilos ye94% yegoridhe rakacheneswa mushure mekubviswa kwegoridhe. Kuti vawedzere kudzoserwa kwegoridhe, vakashandisa lime kuwedzera pH neammonia kuti vabatsire kubvisa mhangura. Pamusoro pezvo, vakabvisa mhangura kubva mugomba. kabhoni vasati vagadzira gold elution uye vakagadzirisa voltage ne amperage panguva yekugadzirwa kwegold elution uye electrodeposition. Matanho aya akabatsira mukuwedzera kudzoreredzwa kwegold.

Australian Low-Grade Copper-Gold Ore

Chicherwa chegoridhe chemhangura chegiredhi yakaderera cheAustralia chakagadziriswa pachishandiswa nzira “yakavhenganiswa flotation—kuparadzanisa mhangura nesarufa—sarufa yakanyungudutswa yegoridhe”. Nekukwenenzvera flotation reagents (uchishandisa musanganiswa webutyl xanthate uye ammonium dibutyl dithiophosphate sevateresi) uye kuyerera kwemaitiro (matanho akawanda ekukoromoka uye kutsvaira mudunhu rakavharwa), vakawana kudzoreredzwa kwemhangura ye82.46% uye kudzoreredzwa kwegoridhe kwakazara kwe91.87%.

mhedziso

Optimizing the sodium cyanide Leaching process mugoridhe-copper ores yakakosha pakuvandudza hupfumi uye kuchengetedza kwezvakatipoteredza kwekucherwa kwegoridhe. Nekunzwisisa matambudziko anounzwa nemhangura uye kushandisa nzira dzakaita senge pretreatment, process parameter optimization, uye kushandiswa kwezvinowedzera, kuvandudzwa kwakakosha mukudzoreredza goridhe uye kushandiswa kwecyanide kunogona kuwanikwa. Tsvagiridzo yeramangwana munzvimbo ino ingangotarisa mukugadzira nzira dzinoshanda uye dzinochengetedza zvakatipoteredza, zvichiwedzera kudzikisira kukanganiswa kwegoridhe-copper ore kugadzirwa panharaunda uku uchiwedzera kutorwa kwezviwanikwa.