Sodium cyanide, ikemikari yakakodzera kuchenesa migodhi yegoridhe

Munyika yeMigodhi yeGoridhe , kuburitsa goridhe kubva mumatombo ibasa rakaoma uye rinonakidza. Imwe kemikari inoita basa guru mukuita uku iSodium Cyanide . Kwemakore anopfuura zana, sodium cyanide yave iri chikamu chakakosha mukubvisa goridhe kubva mumatombo, uye nanhasi, ichiri nzira inoshanda zvakanyanya mumabasa mazhinji ekuchera goridhe.

Izvo zvakakosha zveSodium Cyanide

Sodium cyanide (NaCN) chinhu chine cyano group, iyo ine triple-bonded carbon nenitrogen. Inogona kuvapo mumhando dzakasimba uye dzemvura. Sodium cyanide yakasimba inowanzogadzirwa se white crystalline briquette, inozivikanwawo se "cyanoid." Mabriquette aya anonyungudika zvakanyanya, zvichiita kuti zvive nyore kushandisa mukuchera. Liquid sodium cyanide, kune rumwe rutivi, inoendeswa kunzvimbo dzekuchera kuburikidza nematangi eISO akavakwa nechinangwa akakodzera kutakurwa mumugwagwa kana njanji.

Mashandisiro eSodium Cyanide muMigodhi yeGoridhe

Maitiro ekushandisa sodium cyanide kubvisa goridhe kubva muore anozivikanwa seCyanide Leaching kana kuti cyanidation. Heino pfupiso yemaitiro aya:

1. Kugadzira Matombo : Chekutanga, dombo rine goridhe rinopwanywa kuita upfu hwakatsetseka uchishandisa michina yeindasitiri. Izvi zvinowedzera nzvimbo yepamusoro pedombo, zvichiita kuti rikwanise kubata zviri nani ne sodium cyanide solution.

2. Kubvisa : Ore yakapwanywa inozowedzerwa mumushonga we sodium cyanide unoongororwa zvakanaka. Munguva iyi, mamorekuru egoridhe anoumba zvisungo zvakasimba ne sodium cyanide, zvichiita kuti ive inonyunguduka mumvura. Maitiro emakemikari anogona kumirirwa ne equation: 4 Au + 8 NaCN+O₂ + 2 H₂O = 4 Na(Au(CN)₂)+4 NaOH. Mukuita uku, goridhe rinoita zvinoenderana ne sodium cyanide, oxygen, nemvura kuti rigadzire soluble gold - cyanide complex, sodium aurocyanide (Na(Au(CN)₂)).

3. Kupatsanura : Kana goridhe ranyungudutswa kuita solution, danho rinotevera nderekuiparadzanisa netsvina yasara nezvimwe zvinhu zvisina kuchena. Imwe nzira yakajairika ndeyekushandisa zinc kuti goridhe ribude musolution. Zinc inobatana ne gold-cyanide complex, yobvisa goridhe yogadzira zinc-cyanide complex, nokudaro yoita kuti goridhe ridzokere kuita solid form. Imwe nzira ndeyekushandisa activated carbon kunyudza gold-cyanide complex kubva musolution. Kabhoni yakazadzwa ne gold-laden inozogadziriswazve kuti goridhe ridzorerwe.

Zvakanakira Kushandisa Sodium Cyanide muGoridhe Mining

1. Kushanda Kwemari : Sodium cyanide yakachipa zvishoma kana tichienzanisa nedzimwe nzira dzeGoridhe Extraction . Izvi zvinoita kuti ive sarudzo inokwezva makambani emigodhi, kunyanya kana achishanda nemakambani makuru kana matombo emhando yepasi.

2. Kushanda Nesimba Kwazvo : Kubvisa Cyanide kunogona kuita kuti goridhe riburitswe zvakanyanya, kazhinji kacho kupfuura 90% muzviitiko zvakawanda. Izvi zvinoreva kuti goridhe rakawanda rinogona kuwanikwa kubva mumatombo, zvichiwedzera purofiti yekushanda kwemugodhi.

3. Kunyungudika : Sodium cyanide inonyungudika zvakanaka mumvura, zvichiita kuti ipararire nekukurumidza uye iite seyakafanana negoridhe riri mudombo, izvo zvinobatsira kukurumidzisa maitiro ekuburitsa.

Chengetedzo uye Mafungiro Ezvakatipoteredza

Zvakakosha kuziva kuti sodium cyanide ikemikari ine chepfu. Nekudaro, iyo indasitiri yezvicherwa ine yakasimba chengetedzo mapuroteni aripo kuti ave nechokwadi chekubata kwakachengeteka kwesodium cyanide. Muchokwadi, kuNorth America neAustralia, hakuna kumbove nekufa kwakabatana necyanide pakati pevashandi vemugodhi mumakore anopfuura zana. Pakubata sodium cyanide, vashandi vanosungirwa kupfeka giya rekudzivirira rakakodzera, semasiki kudzivirira kubva kuguruva rinofambiswa nemhepo kana magasi ane huwandu hwe cyanide.

Kubva pakuona kwezvakatipoteredza, chinonyanya kunetsa ndechekuti cyanide inopinda mumvura yepamusoro. Hove dzinonzwa zvakanyanya kune cyanide kupfuura vanhu, uye kushandiswa zvisina kunaka kwecyanide kunogona kukanganisa nharaunda. Kudzikisa njodzi iyi, makambani emigodhi anoshandisa nzira dzakasiyana siyana kubata nekurapa cyanide - ine mhinduro. Semuyenzaniso, vanogona kushandisa pa-pa-saiti yekurapa zvimiti kuti vabvise cyanide vasati vaburitsa chero mvura. Pamusoro pezvo, migodhi mizhinji ine masisitimu ekuchengetedza ekudzivirira kuburitswa netsaona kwecyanide - ine mhinduro.

mhedziso

Sodium cyanide yanga iri, uye inoramba iri, kemikari yakakosha muindasitiri yemigodhi yegoridhe. Kugona kwayo kunyatsoburitsa goridhe kubva mumatombo nemutengo wakaderera kwaita kuti ive chikamu chakakosha chemabasa emazuva ano ekuchera goridhe. Nepo kuchengetedzeka uye kunetseka kwezvakatipoteredza kwakabatana nekushandiswa kwayo, indasitiri yezvicherwa yakafambira mberi zvakanyanya mukugadzira nzira dzekubata zvakachengeteka uye nzira dzinoshanda dzekutonga kwezvakatipoteredza. Sezvo tekinoroji iri kuramba ichishanduka, zvichave zvinonakidza kuona kana nzira nyowani dzekuchera goridhe dzichibuda, asi parizvino, sodium cyanide inoramba iri mutambi akakosha mukutsvaga kuvhura kukosha kwegoridhe kubva mumatombo.