Iyo Nheyo yeSodium Cyanide muCarbon-in-Pulp Maitiro ekubvisa Goridhe

ziviso

Maitiro eCarbon - in-pulp (CIP) inzira inoshandiswa zvakanyanya muindasitiri yekuchera goridhe pakutsvaga goridhe kubva muore. Sodium cyanide inoita basa guru mukuita uku. Chinyorwa chino chinotsanangura zvakadzama mashandiro anoita Sodium cyanide mukuita kweCIP yekubvisa goridhe.

Cyanidation Reaction: Iyo Nheyo yeGoridhe Kuparara

1. Chemical Reaction Mechanism

Sodium cyanide (NaCN) inhengo inobata zvakanyanya. Kana yaiswa muokisijeni, inopindirana negoridhe riri musimbi. Mhedzisiro inoshandura goridhe risinganyunguriki riri mukati meore kuita munyungudika nekugadzira yakagadzikana yakaoma ine goridhe. Iyi nhanho yekuomesesa yakakosha sezvo ichibvumira kuti goridhe riparadzaniswe kubva kune dzakasimba zvikamu zveore.

2. Basa reOkisijeni

Okisijeni chinhu chakakosha muCyanidation reaction , chichishanda sechinhu chinooxidizating agent kuti chibatsire kuputsa goridhe. Pasina okisijeni, mashandiro ari pakati pegoridhe necyanide ions aizoenderera mberi nekumhanya kwehozhwa. Okisijeni inopa mamiriro anodiwa kuti gold-cyanide complex iumbwe. Mumaindasitiri, mhepo inowanzo bhubhurwa nemu cyanide solution kuti ive nechokwadi chekuti oxygen inowanikwa zvakakwana. Huwandu hweoxygen mu solution hunokanganisa zvakananga kumhanya kunonyunguduka goridhe.

3. pH Kudzora

Iyo pH nhanho ye cyanide mhinduro chinhu chakakosha mukuita cyanidation. Sodium cyanide, iri munyu weasidhi isina simba uye hwaro hwakasimba, inogona kupinda muhydrolysis mumvura, inogona kugadzira hydrogen cyanide, gasi rine muchetura uye rinoputika. Kuti udzivise izvi, mhinduro yepH inonyatsochengetedzwa pamwero wepamusoro, kazhinji inenge yakapoteredza 10 - 11. Iyi pH yakakwirira haisi kungogadzirisa cyanide mhinduro asiwo inowedzera kushanda kwekuparara kwegoridhe. Pamusoro pezvo, zvinobatsira kudzikisira kupindira kubva kune mamwe simbi ions mune ore iyo inogona kuita neiyo cyanide ions uye kukanganisa maitiro ekubvisa goridhe.

Adsorption yeGoridhe Cyanide Complexes neActiated Carbon

1. Sarudzo Adsorption Property yeActivated Carbon

Kana goridhe ranyungudutswa mune cyanide mhinduro semacomplexes, activated kabhoni inounzwa mupulp. Activated kabhoni ine nzvimbo hombe yepamusoro uye porous dhizaini, iyo inoibvumira kusarudza kukwezva uye kubatirira pane yegoridhe cyanide complexes. Iwo ma micropores uye mesopores mukati meiyo activated kabhoni inopa akawanda masayiti ekushambadza. Iyo goridhe cyanide complexes inokweverwa kune idzi saiti kuburikidza neakasiyana masimba, anosanganisira van der Waals masimba uye electrostatic kusangana.

2. Mechanism yeAdsorption

Iyo adsorption process yegoridhe cyanide complexes neyakagadzirwa kabhoni inoitika mumatanho akawanda. Chekutanga, iwo macomplexes ari mumhinduro anofamba akananga pamusoro peiyo activated kabhoni nekuda kwekusiyana kwekusangana kwavo pakati pemhinduro neiyo carbon surface. Kamwe pamusoro pepamusoro, iwo macomplexes anonamatira kune anowanikwa nzvimbo. Kuenzana kunowanikwa kana chiyero icho macomplexes ari kushambadzwa akaenzana nechiyero chavari kuburitswa. Kubatana kwepamusoro kweiyo activated kabhoni yegoridhe cyanide complexes inogonesa kupatsanurwa kwakanaka kwegoridhe kubva kune mhinduro, ichiisa iyo kune anotevera matanho ekudzoreredza.

Desorption uye Kudzoreredza kweGoridhe kubva kune Activated Carbon

1. Desorption Process

Kana kabhoni yakakangwa yave negold cyanide complexes uye yazara negoridhe, goridhe rinofanira kubviswa kubva mukabhoni kuti rigadziriswe zvakare. Nzira yakajairika ndeyekuita Zadra. Munzira iyi, kabhoni yakakangwa inorapwa neSodium Cyanide inopisa uye sodium hydroxide. Kupisa uye kuumbwa kwemakemikari emushonga zvinoputsa zvisungo zviri pakati pegold complexes nekabhoni yakakangwa, zvichiita kuti goridhe ridzoserwe mumushonga.

2. Gold Recovery kubva Desorbed Solution

Kana goridhe radzoka mumhinduro, nzira dzakawanda dzinogona kushandiswa kuidzosera. Imwe nzira yakakurumbira ndeye electroplating, apo magetsi anopfuudzwa kuburikidza nemhinduro yekuisa goridhe resimbi pane cathode. Imwe nzira ndeye zinc precipitation. Zinc poda inowedzerwa kune mhinduro, uye kuburikidza nekuita redox, zinc inobvisa goridhe kubva kune yegoridhe cyanide complex, ichibvumira iyo goridhe yakasimudzwa kuti iparadzaniswe kubva kune mhinduro uchishandisa kusefa kana dzimwe nzira dzekuparadzanisa.

mhedziso

Sodium cyanide chikamu chakakosha chemaitiro ekubvisa goridhe nekabhoni. Inogonesa kunyungudika kwegoridhe kubva muore nekugadzira complexes dzakagadzikana kana paine okisijeni uye mamiriro epH akadzorwa. Matanho anotevera ekunyungudika neactivated carbon, kubviswa kubva mucarbon, uye kudzoserwa kwegoridhe zvese zvinovakirwa pane reaction yekutanga inosanganisira sodium cyanide . Kunzwisisa misimboti iyi kwakakosha pakuvandudza kushanda zvakanaka uye kushanda kwemaitiro ekubvisa goridhe muindasitiri yemigodhi, ukuwo uchivimbisa kuchengetedzeka kwakakodzera uye manejimendi ezvakatipoteredza nekuda kwehunhu hwehupfu hwesodium cyanide.