Sodium cyanide muMurwi Leaching: Chinhu Chinokosha muMigodhi yeGoridhe

Mumigodhi yemazuva ano, Heap Leaching yave nzira inoshandiswa zvakanyanya uye inodhura zvishoma yekuwana goridhe kubva mumatombo asina kunyanya kukosha. Pakati pezvinhu zvakasiyana-siyana zveiyi nzira, Cyanide , kunyanya Sodium Cyanide (NaCN), inoita basa guru.

Kukosha kweSodium Cyanide muKuchera Goridhe

Nhamba dzinoratidza kuti sodium cyanide inoshandiswa mumabasa anopfuura 80% ekuburitsa goridhe . Kushandiswa uku kwakanyanya kunoratidza kukosha kwayo muindasitiri yemigodhi. Semuenzaniso, mumugodhi muTanzania, mushure mekuunzwa kweSodium cyanide semushonga wekuburitsa goridhe, kuvandudzwa kukuru kwakaonekwa. Kudzoserwa kwesimbi yesimbi kwakakwira kubva pa60% yekutanga kusvika pa85%, uye kubuda kwayo kwakawedzerawo zvakanyanya. Nhamba idzi hadzingoratidzi chete kushanda kwesodium cyanide mukuita kwekuwedzera goridhe asi dzinoratidzawo basa rayo guru mukuwedzera mwero wekudzoserwa kwegoridhe uye huwandu hwekugadzirwa kwaro.

Iyo Mechanism yeSodium Cyanide muMurwi Leaching

Mumurwi wekucheka kwemurwi, iyo yakaderera-giredhi goridhe ore kana mitsara inoturika inotutira padhi rakagadzirwa risingapindiki. Zvadaro, mhinduro ye sodium cyanide inopfapfaidzwa pamusoro pemurwi weore nenzira yekutenderera. Muhupo hweokisijeni (kazhinji kubva kumhepo), sodium cyanide inopindirana negoridhe riri mu ore. Iyo kemikari yekuita inogona kuwanzo kuratidzwa sezvinotevera: 4Au + 8NaCN + O₂+ 2H₂O = 4Na[Au(CN)₂]+ 4NaOH. Kuburikidza nekuita uku, goridhe rinogadzira soluble complex, sodium aurocyanide (Na[Au(CN)₂]), iyo inobva yanyunguduka mumushonga uye inogona kudzorerwa zvakare.

Zvakanakira Kushandisa Sodium Cyanide muMurwi Leaching

1. Kushanda Nesimba Kwazvo : Sezvakaratidzwa mumuenzaniso wemugodhi wekuTanzania, sodium cyanide inogona kunyungudutsa goridhe kubva mumatombo, zvichikonzera kuwedzera kukuru kwehuwandu hwekudzoserwa kwegoridhe. Kushanda nesimba uku pakubvisa goridhe kubva mumatombo emhando yepasi kunoita kuti kucheneswa kwegoridhe nesodium cyanide kuve sarudzo inoshanda kumigodhi iyo yaizoonekwa seisina mari yakawanda.

2. Kushanda zvakanaka kwemari : Zvichienzaniswa nedzimwe nzira dzekubvisa goridhe, kushandiswa kwe sodium cyanide mukubvisa goridhe mu heap leaching hakudhuri zvakanyanya. Mutengo wese wekubvisa goridhe mu heap leaching, kusanganisira mutengo we sodium cyanide, unowanzova wakaderera pane wenzira dzakaoma uye dzinoshandisa simba rakawanda. Kushanda zvakanaka kwemari iyi ndicho chinhu chikuru chinoita kuti ishandiswe zvakanyanya muindasitiri yemigodhi.

Matambudziko uye Chengetedzo Yakabatana neSodium Cyanide

1. Kukuvara : Sodium cyanide ine chepfu yakawanda. Kubuda kwemvura kana kusabatwa zvakanaka kwemushonga wecyanide kunogona kutyisidzira nharaunda neutano hwevanhu. Nokudaro, matanho akasimba ekuchengetedza uye nzira dzekuchengetedza nharaunda dzinofanira kushandiswa panguva yekuchengetwa, kutakurwa, uye kushandiswa kwemushonga wesodium cyanide. Migodhi inofanirwa kuve nehurongwa hwakagadzirwa zvakanaka hwekudzivirira kudonha kwecyanide uye nzira dzinoshanda dzekurapa marara ane cyanide.

2. Kutevedzera Mutemo : Nekuda kwechepfu yayo, kushandiswa kwe sodium cyanide kunotevedzwa nemitemo yakasimba munyika dzakawanda. Makambani emigodhi anofanirwa kutevedzera mitemo iyi ine chekuita nekuchengetedza, kubata, uye kurasa cyanide. Izvi zvinosanganisira kugara uchitarisa huwandu hwecyanide mumarara uye kuona kuti anosangana nezvinodiwa nenharaunda.

Mukupedzisa, sodium cyanide chinhu chakakosha reagent mumirwi leaching maitiro ekuchera goridhe. Kushanda kwayo kwakanyanya uye mutengo - kushanda kunoita kuti ive sarudzo yakasarudzika yekubvisa goridhe kubva kune yakaderera-giredhi ores. Nekudaro, iyo inosanganisirwa muchetura uye zvinodiwa zvekutonga zvinoda kubata nekuchenjerera uye kuteedzera kwakasimba kuti ive nechokwadi chekuchengetedza uye kwakachengeteka mabasa emigodhi.