Izvo Zvikumbiro uye Kukosha kweSodium Cyanide muMineral Processing

Sodium cyanide , chinhu chisina makemikari, chinoita basa guru mukuita kuti simbi dzive dzakasviba muindasitiri yekuchera goridhe. Mashandisirwo ayo akasiyana-siyana uye akakosha mukubvisa simbi dzinokosha kubva mumatombo.

Gold Ore Leaching

Imwe yenzira huru dzinoshandiswa neSodium cyanide ndeyekubvisa goridhe. Mukuita uku, goridhe, mushure mekupwanywa nekukuyiwa kuita zvidimbu zvidiki, rinosangana neaqueous solution ine Sodium Cyanide . Kemikari inoitika pakati pesodium cyanide negoridhe riri muore, zvichikonzera kuumbwa kwemaion egold cyanide, ayo anobva anyungudutswa mu solution. Maitiro aya, anozivikanwa seCyanide leaching , idanho guru uye rinokosha mukugadzirwa kwegold ore. Kemikari ye equation ye reaction pakati pegold, oxygen, uye sodium cyanide mu aqueous solution inogona kurerutswa se: 4Au + 8NaCN + O₂ + 2H₂O → 4Na[Au(CN)₂] + 4NaOH. Kuita uku kunobvumira goridhe, iro rinowanzo kuwanikwa muhuwandu hwakaderera muore, kuti rinyungudutswe zvakanaka uye riparadzaniswe nemamwe mamineral.

Kuchera Goridhe

Kutevera iyo cyanide leaching process, mhinduro ine goridhe yakanyungudika inounganidzwa uye inoiswa mukumwe kurapwa kuti iwedzere goridhe. Sodium cyanide inoshanda seyakagadzika padanho iri. Inopindirana neiyo goridhe chloride ions mumhinduro kuumba goridhe cyanide complexes. Zvadaro, nzira dzakasiyana-siyana dzinoshandiswa kuburitsa goridhe kubva kune aya macomplexes. Imwe nzira yakajairika ndeyekushandisa zinc guruva kana zvimwe zvinoderedza. Zinc inobvisa goridhe kubva kugoridhe cyanide, zvichikonzera kunaya kwegoridhe resimbi. Mhedzisiro yacho inogona kumiririrwa se: 2Na[Au(CN)₂] + Zn → 2Au + Na₂[Zn(CN)₄]. Iyi nzira inogonesa kudzoreredza kwepamusoro-kuchena goridhe kubva kune leach mhinduro.

Leaching yemamwe Metal Ores

Kupfuura goridhe, sodium cyanide inoshandiswawo mukubviswa kwesimbi dzesimbi. Semuenzaniso, kana dziri dzesirivha, mushure mekubviswa kwecyanide, sodium cyanide inogona kushandiswa senzira yekuburitsa sirivha kubva mumushonga. Kufanana nemaitiro ekubvisa goridhe , sirivha inogadzira cyanide complexes kana paine sodium cyanide. Kuita pakati pesirivha, sodium cyanide, uye oxygen mumushonga wemvura kwakafanana nekwegoridhe: 4Ag + 8NaCN + O₂ + 2H₂O → 4Na[Ag(CN)₂] + 4NaOH. Aya macomplex esirivha cyanide anogona kugadziriswa zvakare kuti awane sirivha yesimbi.

Mukupedzisa, sodium cyanide ikemikari inokosha zvikuru muindasitiri yekugadzira zvicherwa , kunyanya mukuchera simbi dzinokosha dzakadai segoridhe nesirivha. Zvisinei, zvakakosha kuziva kuti nekuda kwehunhu hwayo hune chepfu, matanho akasimba ekuchengetedza nharaunda anofanirwa kuitwa panguva yekushandiswa kwayo mumabasa ekuchera migodhi kudzivirira chero njodzi kuhutano hwevanhu nenharaunda.