Cyanidation Maitiro Kushandisa uye Tsvagiridzo yeCopper-Inotakura Goridhe Ores

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Munyaya yekuburitsa goridhe, maitiro ekugadzira goridhe rave riri dombo guru nekuda kwekusarudza kwaro uye kugona kwaro kuita zvinhu. Zvisinei, kana tichitarisa matombo egoridhe ane mhangura, kuoma kwe mineralology kunounza matambudziko akasiyana. Sezvo mamakisi emhangura, sirivha, negoridhe pasi rose ari kuramba achidzikira, uye mineralology iri pedyo ichiramba ichisiyana-siyana, zvakakosha kugadzirisa maitiro ekugadzira matombo aya akaomarara. Iyi blog post inotarisa mukushandiswa nekutsvagisa kwekugadzira goridhe rakagadzirwa nemhangura, nechinangwa chekupa ruzivo rwenzira dzinoshanda dzekurapa.

Matambudziko muCyanidating Mhangura-Inotakura Goridhe Ores

Mineralogical Complexity

Matombo egoridhe ane mhangura anowanzova nemaminerari akasiyana-siyana, anosanganisira mamineral esimbi ane sulfide akadai sepyrite, pyrrhotite, chalcopyrite, uye sphalerite. Pamusoro pezvo, anogona kunge aine maion akaita seFe²⁺, Cu²⁺, Zn²⁺, S²⁻, uye Fe³⁺ mu pulp yematombo. Munguva yekubviswa kwecyanidation, zvikamu izvi zvinogona kushandisa cyanide yakawanda uye oxygen yakanyungudutswa. Semuenzaniso, kuvapo kweCu²⁺ kunogona kuita necyanide, zvichigadzira complexes dzakagadzikana, nokudaro zvichideredza cyanide yakasununguka inowanikwa kuti inyunguduke goridhe. Izvi hazvingowedzere kushandiswa kwecyanide chete asiwo zvinoderedza kushanda kwekubvisa gold.

Cyanide Kushandiswa

Kuwanda kwemhangura mumatombo esimbi kunokonzera kushandiswa kwecyanide zvakanyanya . Mhangura inonyunguduka muzvinwiwa zvesimbi inosanganiswa necyanide, zvichikonzera mitengo yepamusoro isingagamuchirwi yekushanda. Mune zvimwe zviitiko, huwandu hwemhangura muzvinwiwa zvesimbi hunogona kuchinja nekufamba kwenguva, sezvinoonekwa mumugodhi weAnglo Asian Mining weGeda Bek muAzerbaijan. Mushure mekutanga kwefekitori yekugadzira goridhe regitation leach neresin - in - pulp, huwandu hwemhangura hwakakwira kupfuura zvaitarisirwa hwakakonzera kushandiswa kwecyanide zvakanyanya, kunyangwe fekitori yacho ichikwanisa kubata huwandu hwakawanda hwemhangura muzvinwiwa zvesimbi pasina kukanganisa kugadzirwa kwegoridhe zvakanyanya.

Kushandiswa kweCyanidation Process yeCopper-Bearing Gold Ores

Ammonia - Inobatsirwa Cyanide Leaching

Imwe nzira yekugadzirisa matambudziko ekuita cyanidating ores yegoridhe ine mhangura ndeyekushandiswa kweammonia - inobatsira cyanide leaching. Mumugodhi weGeda Bek, ammonia yakaunzwa mudunhu reLeaching kuderedza kushandiswa kwecyanide. Iyi nzira yakaonekwa ichishanda mukuchenura kuchekwa kwemhangura nehafu, zvichizotungamira mukudzikiswa kukuru kwekushandiswa kwecyanide mune yakazara-scale leaching system. Kushandiswa kweammonia mumhangura - goridhe cyanide leach masisitimu ane nhoroondo refu, kubva muna 1902 apo Hunt akapa mvumo yekushandiswa kwayo kuderedza kushandiswa kwecyanide panguva yekudonha kwegoridhe kubva kumhangura - inotakura ores. Iyo ammonia - cyanide process yakashandiswa mukutengesa kurapa miswe kubva kuComstock Lode muNevada uye cupriferous gold ore kuDale, California.

Kugadziriswa kweOre Pulp

Preatment of the ore pulp nderimwe danho rakakosha mukuita cyanidation yemhangura-inobereka goridhe ores. Alkaline pretreatment inogona kuderedza kushandiswa kwecyanide uye kugadzirisa cyanide leaching rate yegoridhe. Kana iyo ore pulp isina kudzoserwa, iyo yemahara CN⁻ mairi ndiyo idiki, zvichiratidza kuti CN⁻ inodyiwa neFe²⁺, Zn²⁺, S²⁻ nemamwe maion, uye zvirimo zveCu²⁺, Fe³⁺, Zn²⁺ ions zvakare zvakaderera. Mushure mekutanga kurapwa, iyo yemahara CN⁻ mune ore pulp yakakwira, uye maCu²⁺, Fe³⁺, Zn²⁺ ions akakwira pane ayo asina preatatment, zvinoreva kuti kushandiswa kwemahara CN⁻ mushure mekutanga kuderedzwa, uye maion anokuvadza haadyiwe neCN⁻. Naizvozvo, alkaline pretreatment pamberi pecyanide leaching inogona kubatsira.

Tsvagiridzo uye Mafambiro Ekuita

Kuvandudzwa kweNew Reagents uye Maitiro

Vatsvagiri vari kugara vachiongorora mareagents matsva uye maitiro ekuvandudza cyanidation process yemhangura-inobereka goridhe ores. Semuenzaniso, kushandiswa kweanobatsira oxidants inzvimbo yekutarisa. Kuwedzera oxidants (seyakachena okisijeni kana mamwe maokisi) panguva yekuita leaching inogona kuwedzera iyo "inoshanda inoshanda okisijeni" zvirimo mune ore pulp, kunatsiridza cyanidation leaching nharaunda, mhanyisa kumhanya kweleaching, kupfupisa nguva yekudonha, uye kuderedza kushandiswa kwecyanide. Kushandiswa kweanobatsira oxidants kwave kusimudzirwa zvakanyanya pasirese seyakanyanya tekinoroji yekugonesa maitiro ecyanidation. Pamusoro pezvo, kuvandudzwa kwevatsva vanoregedza, senge thiosulfate, iyo yakaratidza kugona mukubvisa goridhe kubva kune mhangura-ine goridhe ores ine hunyanzvi hwepamusoro, zvakare igwaro rakakosha rekutsvagisa.

Process Kubatanidza uye Optimization

Kubatanidza maitiro akasiyana-siyana kunogonawo kutungamirira kumigumisiro iri nani. Semuyenzaniso, kubatanidza agitation leach chirimwa nemashandiro aripo murwi leach/ADR/SART, sezvakaitwa mumugodhi weGeda Bek, zvinogona kuita kuti hurongwa hwese hunyatsoshanda. Iyo resin - in - pulp system, uko goridhe rinodzoserwa kubva muleach pulp nekusangana negoridhe - chaiyo ion exchange resin, chikamu chakakosha chekubatanidzwa uku. Nekugadzirisa kusanganiswa kwemaitiro aya uye zvishandiso, kuita kwese kweiyo cyanidation process yemhangura-inotakura goridhe ores inogona kuvandudzwa.

mhedziso

Iyo cyanidation process yendarira ine goridhe ores inoramba iri nzira yakakosha muindasitiri yezvicherwa zvisinei nematambudziko ayo. Kuburikidza nemaitiro akadai seammonia - yakabatsira cyanide leaching, ore pulp pretreatment, uye kuenderera mberi nekutsvagisa uye kuvandudzwa kwemareagents matsva nekubatanidzwa kwemaitiro, kushanda nesimba uye kubudirira kwehupfumi kweiyo cyanidation process inogona kuvandudzwa. Sezvo indasitiri yezvicherwa ichienderera mberi nekutarisana nematambudziko ekudzikira kwemagiredhi eore uye yakaoma mineralogy, kuenderera mberi hunyanzvi hwekuita cyanidation yematombo egoridhe ane mhangura kuchave kwakakosha kuve nechokwadi chekugadzirwa kwegoridhe.