Kugwiritsa Ntchito ndi Kufunika kwa Sodium Cyanide mu Mineral Processing

Sodium cyanide , yomwe ndi chinthu chosapangidwa mwachilengedwe, imagwira ntchito yofunika kwambiri pakupanga cyanidation mumakampani opanga golide. Ntchito zake ndi zosiyanasiyana komanso zofunika kwambiri pakutulutsa zitsulo zamtengo wapatali kuchokera ku miyala.

Kutuluka kwa Gold Ore

Chimodzi mwa ntchito zazikulu za Sodium cyanide ndikutulutsa miyala yagolide. Munjira iyi, miyala yagolide, ikaphwanyidwa ndikuphwanyidwa kukhala tinthu tating'onoting'ono, imalumikizidwa ndi yankho lamadzi lomwe lili ndi Sodium Cyanide . Kusintha kwa mankhwala kumachitika pakati pa sodium cyanide ndi golide mu miyala, zomwe zimapangitsa kuti ma ayoni agolide cyanide apangidwe, omwe amasungunuka mu yankho. Njirayi, yomwe imadziwika kuti Cyanide leaching , ndi gawo lofunikira komanso lofunikira pakuwonjezera golide. Equation ya mankhwala ya momwe golide, mpweya, ndi sodium cyanide zimagwirira ntchito mu yankho lamadzi imatha kusinthidwa motere: 4Au + 8NaCN + O₂ + 2H₂O → 4Na[Au(CN)₂] + 4NaOH. Kuchita izi kumalola golide, yemwe nthawi zambiri amakhalapo m'migodi yochepa, kuti asungunuke bwino ndikulekanitsidwa ndi mchere wina.

Kutulutsa Golide

Kutsatira njira ya cyanide leaching, yankho lomwe lili ndi golide wosungunuka limasonkhanitsidwa ndikupatsidwa chithandizo china kuti golideyo agwetse. Sodium cyanide imagwira ntchito ngati mpweya mu siteji iyi. Imakhudzidwa ndi ayoni wagolide wa chloride mu njira yopangira ma golide a cyanide. Pambuyo pake, njira zosiyanasiyana zimagwiritsidwa ntchito pochotsa golide m'mafakitalewa. Njira imodzi yodziwika bwino ndiyo kugwiritsa ntchito fumbi la zinki kapena zinthu zina zochepetsera. Zinc imachotsa golide kuchokera ku golide wa cyanide, zomwe zimapangitsa kuti mvula yachitsulo ikhale yachitsulo. Zomwe zimachitika zitha kuyimiridwa motere: 2Na[Au(CN)₂] + Zn → 2Au + Na₂[Zn(CN)₄]. Njirayi imathandizira kubwezeretsanso golide woyenga kwambiri kuchokera ku njira ya leach.

Leaching of Other Metal Ores

Kupatula golide, sodium cyanide imagwiritsidwanso ntchito pochotsa zitsulo zina. Mwachitsanzo, pankhani ya miyala yasiliva, pambuyo pochotsa cyanide, sodium cyanide ingagwiritsidwe ntchito ngati chotulutsira siliva kuchokera mu yankho. Mofanana ndi njira yochotsera Golide , siliva imapanga ma cyanide complexes pamaso pa sodium cyanide. Kuchitapo kanthu pakati pa siliva, sodium cyanide, ndi mpweya mu yankho lamadzi kumakhala kofanana ndi kwa golide: 4Ag + 8NaCN + O₂ + 2H₂O → 4Na[Ag(CN)₂] + 4NaOH. Ma complex a siliva awa amatha kukonzedwanso kuti apeze siliva wachitsulo.

Pomaliza, sodium cyanide ndi mankhwala ofunikira kwambiri mumakampani opanga mchere , makamaka pochotsa zitsulo zamtengo wapatali monga golide ndi siliva. Komabe, ndikofunikira kudziwa kuti chifukwa cha poizoni wake wambiri, njira zodzitetezera komanso zoteteza chilengedwe ziyenera kutsatiridwa panthawi yomwe imagwiritsidwa ntchito mumigodi kuti tipewe kuvulaza thanzi la anthu komanso chilengedwe.