Iko Kubata kweSodium Cyanide Leaching Nguva paKudzoreredza Rate

ziviso

Cyanide leaching inzira inoshandiswa zvakanyanya kuburitsa goridhe kubva musimbi yegoridhe. Pakati pezvinhu zvakasiyana-siyana zvinokurudzira cyanide leaching maitiro, iyo nguva yekuzorora of sodium cyanide inoita basa rakakosha mukuona mwero wekudzoreredzwa kwegoridhe. Kunzwisisa hukama pakati pavo kwakakosha pakugadzirisa cyanide Leaching operation nekuvandudza hupfumi hwekugadzirwa kwegoridhe.

Maitiro eCyanide Leaching

Mukuita cyanide leaching process, goridhe mune ore inopindirana nayo Sodium Cyanide pamberi peokisijeni kuita soluble gold cyanide complexes. Kuita kwemakemikari kunogona kungoratidzwa se: 4Au + 8NaCN + O₂ + 2H₂O = 4Na[Au(CN)₂] + 4NaOH. Kuita uku kunoitika pamusoro pezvimedu zvegoridhe, uye chiyero uye chiyero chemaitiro chinokanganiswa nezvakawanda zvinhu, nenguva yeLeaching iri imwe yeakakosha.

Iyo Leaching Nguva Inobata sei Recovery Rate

Nhanho yekutanga

Pakutanga kwekugadzirisa, sezvo nguva inofambira mberi, chiyero chegoridhe chakanyungudutswa mukugadzirisa chinowedzera nokukurumidza. Zvimedu zvegoridhe zviri pamusoro pesimbi zvinokurumidza kurwiswa nemaioni ecyanide. Iyo nyowani nyowani yegoridhe inopa huwandu hukuru hwenzvimbo dzekuita, uye iyo yekumisikidza gradient pakati pepamusoro pezvimedu zvegoridhe uye mhinduro inosimudzira kuenderera kuparara kwegoridhe. Munguva iyi, chiyero cheleaching chegoridhe chinoratidza kukwira kumusoro, uye chiyero chekudzoreredza chinowedzera zvakanyanya nekuwedzera kwenguva yekudonha.

Middle Stage

Sezvo kuyerera kuri kuenderera mberi, goridhe riri pamusoro pekunze kwezvikamu zveore rinonyungudika zvishoma nezvishoma, uye zvimedu zvegoridhe zvasara zvingave zvakadzika mukati mezvimedu zveore kana kuve nemamiriro ekuwedzera akaomarara. Panguva ino, chiyero cheleaching chinotanga kuderera. Kunyangwe kuita kuchiri kuenderera mberi, kupararira kweiyo cyanide ion pamusoro pezvimedu zvegoridhe kunowedzera kuoma nekuda kwekuumbwa kweiyo saturated solution layer yakatenderedza zvimedu uye kuvharika kwezvimwe zvinhu zvinogadzirwa. Zvisinei, chiyero chekudzorera chichiri kuwedzera, asi pane imwe nguva inononoka kana ichienzaniswa nekutanga.

Gare gare Stage

Mushure meimwe nguva yakareba yekudonha, mwero wekudonha wegoridhe unosvika pakukosha kwakasimba. Yakawanda yegoridhe rinowanikwa nyore nyore rakanyungudutswa, uye goridhe rasara rinenge riri muchimiro chakanyatsonaka, chakaputirwa zvakasimba nemamwe mamineral, kana chiripo muchimiro chinonetsa kuita necyanide. Kurebesa nguva yeleaching panguva ino haina zvazvinoita pakuwedzera chiyero chekudzoreredza. Muchokwadi, kuramba uchiwedzera iyo leaching nguva inogona kutokonzeresa mamwe maitiro asina kunaka, sekuwedzera kushandiswa kwe Sodium cyanide, mashandisirwo emagetsi ekushandisa midziyo, uye njodzi dzinogona kuitika dzekusvibiswa kwezvakatipoteredza nekuda kwekuratidzwa kwenguva refu kwemhinduro dzine cyanide.

Case Studies

Nyaya yekutanga: Mugodhi wegoridhe muShandong, China

Mumugodhi wegoridhe muShandong, vaongorori vakaita zvakatevedzana zviedzo pa cyanide leaching. Vakaona kuti kana nguva yeLeaching yaive maawa gumi nemaviri, goridhe rekudzoreredza raingove 12%. Sezvo nguva yekuvhara yakawedzerwa kusvika kumaawa makumi maviri nemana, chiyero chekudzorera chakawedzera kusvika ku60%. Zvisinei, apo nguva yekudzidzira yakawedzerwa kusvika kumaawa makumi matatu nematanhatu, chiyero chekudzorera chakangowedzera zvishoma kusvika ku24%. Izvi zvinoratidza kuti mukati meimwe nhanho, kuwedzera nguva yeleaching kunogona kunyatso kuvandudza mwero wekudzoreredza, asi mushure mekusvika pane imwe nhanho, iyo marginal mhedzisiro yekuwedzera kudzoreredza chiyero nekuwedzera nguva yeleaching inova isingaite.

Nyaya yechipiri: Mugodhi wegoridhe weAustralia

Mumugodhi wegoridhe wekuAustralia, mamiriro akasiyana enguva yekudonha akaisirwa mabhechi akasiyana e ore. Kune ore ine chimiro chakareruka, kana nguva yeLeaching yaive maawa gumi nemasere, chiyero chekudzoreredza che18% chakawanikwa. Asi kune simbi ine yakanyanya kuomarara kuumbwa ine yakawanda tsvina, kunyangwe mushure memaawa makumi matatu nematanhatu ekudonha, chiyero chekudzoreredza chakasvika 85%. Izvi zvinoratidza kuti kukanganisa kwenguva yeleaching pachiyero chekudzoreredza kunoenderanawo nechimiro chesimbi. Ores ane maumbirwo akaomarara anogona kuda nguva refu yekurebesa kuti uwane inogutsa mareti ekudzoreredza, asi pane zvakare muganhu.

Optimization yeLeaching Nguva

Kuti uwedzere nguva yekudzidzira, zvinhu zvakawanda zvinoda kutariswa zvizere. Chekutanga, zvinodikanwa kuita yakadzama mineralogical ongororo yeore kuti unzwisise kuitika mamiriro egoridhe, senge saizi yegoridhe, dhigirii rekumisikidza, uye zviri mukati mezvicherwa zvakabatana. Zvichienderana neizvi, nguva yakakodzera yekutanga yekudzidzira inogona kufungidzirwa. Chechipiri, panguva yekuita leaching, chaiyo-nguva yekutarisisa kuwanda kwegoridhe mumhinduro yeLeaching uye yakasara yegoridhe zvirimo muore inogona kuitwa kuburikidza nesampling uye kuongororwa. Zvinoenderana nekuchinja kwemaitiro aya data, iyo leaching nguva inogona kugadziriswa nenguva. Chechitatu, mukubatana nezvimwe zvinhu zvinokanganisa maitiro ekuregedza, senge kuwanda kwe sodium cyanide, iyo pH kukosha kwemhinduro, uye tembiricha, chirongwa chakakwana chekugadzirisa chinogona kuumbwa kuti chiwane chiyero chepamusoro pakati peyero yekudzoreredza uye mutengo wekugadzira.

mhedziso

Iyo leaching nguva ye sodium cyanide ine yakakosha kukanganisa kudzoreredza mwero wegoridhe mucyanide leaching process. Mumatanho ekutanga uye epakati ekuleaching, kuwedzera nguva yeleaching kunogona kunyatso kuwedzera mwero wekupora. Nekudaro, mushure mekusvika pane imwe nhanho, kuwedzera kuwedzera nguva yeleaching hakuna zvakunoita pakuvandudza mwero wekudzoreredza uye zvinogona kuunza mamwe maitiro asina kunaka. Mhando dzakasiyana dzeore dzine dzakasiyana dzakakwana dzenguva dzekucheka, dzinoda kutariswa kuburikidza nekufunga kwakadzama kwezvinhu zvakasiyana uye kuyedza chaiko. Nekugadzirisa nguva yekucheka, kushanda kwegoridhe cyanide leaching kunogona kuvandudzwa, uye zvirinani zvehupfumi uye zvakatipoteredza zvinogona kuwanikwa muindasitiri yemigodhi yegoridhe.