Cyanide Kushandiswa muGoridhe Cyanidation Maitiro

Maitiro ekugadzira goridhe rakachena ibasa guru mukubvisa goridhe kubva mumatombo aro. Kunzwisisa kushandiswa kwe sodium cyanide panguva iyi kwakakosha pakuvandudza mashandiro ekushanda uye kuderedza kukanganisa kwezvakatipoteredza. Chinyorwa chino chinotarisa nzira dzakasiyana dzinobatsira pakushandiswa kweSodium Cyanide mukugadzira goridhe rakachena.

1. Autodecomposition

Sodium cyanide inoora yoga panguva yekushandiswa kwecyanidation. Izvi zvinoguma nekuumbwa kwecarbonic acid, formic acid, uye ammonia. Maitiro ekuzviora yoga anogona kunge akaoma uye anokanganiswa nezvinhu zvakaita sekupisa, kuwanda, uye kuvapo kwezvimwe zvinhu zvinokonzera kukuvadza.

2. Hydrolysis

Kunyungudika kweSodium cyanide ndeimwe nzira inokosha yekushandiswa. Kuita kwemvura nesodium cyanide ndekwekuti:

( H2O + NaCN HCN + NaOH )

Hydrogen cyanide (HCN), chinhu chinoshanduka-shanduka uye chine chepfu, chinogadzirwa panguva yehydrolysis iyi. Huwandu hweHCN hunogadzirwa hunoenderana zvakanyanya nealkalinity yemushonga. Kana pH ikaramba iri pa12 kana kupfuura, cyanide solution inoramba yakagadzikana. Zvisinei, zvinhu zvinogona kuderedza pH, zvakaita secarbon dioxide kubva mumhepo, acids mumvura inogadzirwa, divalent magnesium ions ( Mg2+ ) uye trivalent aluminium ions ( A13+ ), uye zvicherwa zvakasiyana-siyana muore kana oxidation products yesulfide minerals , zvinogona kukurumidzisa hydrolysis reaction.

3. Kuumbwa kweThiocyanate

Sodium cyanide inobatana nemamineral esulfide akadai sesimbi, mhangura, uye arsenic kuti igadzire macomplex ethiocyanate. Macomplex aya anoshandura maion ecyanide kuita marudzi asingashande zvakanyanya, zvichideredza huwandu hwecyanide yakasununguka inowanikwa yekuburitsa goridhe . Kuumbwa kwemacomplex aya ethiocyanate hakungowedzere kushandiswa kwecyanide chete asiwo kunokanganisa kushanda kwese kwekuita kwecyanidation yegoridhe.

Kunzwisisa nzira dzekushandisa idzi kunopa ruzivo rwakakosha kune vanoshanda muindasitiri yekuchera goridhe. Nekunyatsotarisisa uye nekudzora mamiriro eiyo cyanidation process, zvinokwanisika kudzikisira kushandiswa kwecyanide, kuvandudza goridhe kudzoreredza mitengo, uye kuderedza nharaunda tsoka yemabasa emigodhi yegoridhe.