Udindo Wofunikira wa Sodium Cyanide mu Gold Ore Heap Leaching

Mu ntchito yofukula golide, kufufuta golide pogwiritsa ntchito heap leaching kwaonekera ngati njira yodziwika bwino komanso yotsika mtengo yopezera golide kuchokera ku miyala yotsika mtengo. Pakati pa zigawo zosiyanasiyana za njira yofufuta golide pogwiritsa ntchito heap leaching, sodium cyanide imagwira ntchito yofunika kwambiri.

Chiyambi cha Gold Heap Leaching

Golide mulu wa leaching ndi njira yomwe miyala yagolide yotsika kwambiri kapena michira yoyandama imawunjikidwa papepala lopangidwa mwapadera. Mwalawu umalowetsedwa ndi njira yothira madzi, yomwe imadutsa mulu wa miyalayo, ndikusungunula golide wopezeka mu miyalayo. Njirayi ndiyoyenera kwambiri pochiza milingo yayikulu ya ores agolide otsika, chifukwa imapereka njira yosavuta komanso yachuma yochotsera golide poyerekeza ndi njira zovuta komanso zotsika mtengo za mphero ndi kusungunula.

Udindo wa Sodium Cyanide mu Kuwonongeka kwa Golide

Chemical Reaction Mechanism

Sodium cyanide (NaCN) ndi chinthu champhamvu chotulutsa golide mu golide wosungunuka . Chinsinsi cha kugwira ntchito kwake chili ndi kuthekera kwake kuchitapo kanthu ndi golide pamene pali mpweya. Kuchitapo kanthu kwa mankhwala kumatha kuchepetsedwa motere: 4Au + 8NaCN+O_{2}+2H_{2}O = 4Na[Au(CN)_{2}]+4NaOH

Mu izi, golide (Au) amachitapo kanthu ndi Sodium Cyanide ndi mpweya kuti apange golide wosungunuka - cyanide complex, sodium dicyanoaurate (Na[Au(CN)_{2}]). Izi zimapangitsa kuti golide, yemwe nthawi zambiri amakhalapo mu mawonekedwe opyapyala kwambiri kapena ofalikira mu miyala, asungunuke mu yankho, motero zimathandiza kuti libwererenso.

Kusankhidwa kwa Golide

Chimodzi mwa zinthu zodabwitsa za Sodium cyanide mu heap leaching ndi kusankha kwake golide. Ngakhale kuti miyalayi ikhoza kukhala ndi zinthu zina ndi mchere, sodium cyanide imakonda kuchitapo kanthu ndi golide pansi pa mikhalidwe yoyenera. Kusankha kumeneku n'kofunika kwambiri chifukwa kumalola kuti golide atulutsidwe popanda kusokonezedwa kwambiri ndi zinthu zina zomwe zili mu miyalayi, zomwe zimachepetsa zovuta komanso mtengo wa njira zopatulira ndi kuyeretsa pambuyo pake.

Chikoka pa Kuchita Bwino kwa Milu Leaching

Leaching Rate

Kugwiritsa ntchito sodium cyanide kumakhudza kwambiri kuchuluka kwa golide. Kuchulukana koyenera kwa sodium cyanide mu njira ya leaching kumatha kufulumizitsa kusungunuka kwa golide. Nthawi zambiri, kuchulukitsa kuchuluka kwa sodium cyanide mkati mwamitundu ina kumatha kupititsa patsogolo kuchuluka kwa golide - cyanide complex. Komabe, uwu siubwenzi wofananira, ndipo kukwera kwambiri kumatha kubweretsa zovuta zina monga kuchuluka kwamitengo ya reagent komanso zovuta zachilengedwe.

Mtengo Wobwezeretsa Golide

Kukhalapo kwa sodium cyanide kumagwirizana mwachindunji ndi kuchira kwa golide. M'makina opangidwa bwino komanso oyendetsedwa bwino, kugwiritsa ntchito sodium cyanide kumatha kukwaniritsa mitengo yayikulu yobwezeretsa golide, nthawi zambiri kuyambira 60 - 90% kapena kupitilira apo kutengera mtundu wa miyalayo. Kuchulukitsa kwachuma kumatanthauza kugwiritsa ntchito bwino chuma cha golide mu miyala yamtengo wapatali, chomwe chili chofunikira kwambiri pazachuma pantchito zamigodi.

Kukhathamiritsa kwa Kugwiritsa Ntchito Sodium Cyanide mu Mulu Leaching

Kuwongolera Maganizo

Kuzindikira kuchuluka koyenera kwa sodium cyanide mu njira yoperekera leaching ndi gawo lofunikira pakukhathamiritsa kwa milu ya leaching. Izi zimafuna kulingalira mozama za zinthu monga kalasi ya ore, mineralogy, ndi kukhalapo kwa zinthu zina zomwe zingadye cyanide. Mwachitsanzo, ore okhala ndi mkuwa, zinki, kapena chitsulo cha sulfide chochuluka angafunike kuchuluka kwa cyanide kuti atsimikizire kusungunuka kwa golide wokwanira, chifukwa zitsulozi zimatha kuchitapo kanthu ndi cyanide ndikupikisana ndi golide wopangira chinthucho.

PH Kusintha

PH ya yankho la leaching imathandizanso kwambiri pakuchita bwino kwa sodium cyanide. Sodium cyanide imakhala yokhazikika komanso yokhazikika m'malo amchere. Kawirikawiri, pH ya njira leaching mu golide mulu leaching anakhalabe mu osiyanasiyana 9 - 11. Kusintha pH sikungowonjezera kukhazikika kwa sodium cyanide komanso zimakhudza kusungunuka kwazitsulo zina - cyanide complexes, potero kuwongolera kusankha kwa golide m'zigawo.

Kuganizira Zachilengedwe ndi Chitetezo

Poizoni ndi Zachilengedwe Zachilengedwe

Sodium cyanide ndi chinthu chakupha kwambiri. Pankhani ya golide mulu wa leaching, njira zoyendetsera chilengedwe ndizofunikira kuti ziletse kutulutsidwa kwake ku chilengedwe. Kutayira kapena kutaya kosayenera kwa sodium cyanide - yomwe ili ndi mayankho kumatha kukhala ndi zotsatirapo zoyipa pazamoyo zam'madzi, nthaka yabwino, komanso thanzi la munthu. Mwachitsanzo, ngati sodium cyanide - leachate yowonongeka itsikira m'madzi oyandikana nawo, imatha kupha nsomba zambiri ndikuwononga madzi akumwa.

Kusamala Zachitetezo Pogwira

Pogwira ntchito zamigodi, njira zotetezeka zotetezedwa ziyenera kutsatiridwa pogwira sodium cyanide. Ogwira ntchito yokonza, kuyendetsa, ndi kugwiritsa ntchito mankhwala a sodium cyanide ayenera kupatsidwa zida zoyenera zodzitetezera, kuphatikizapo magolovesi, masks, ndi magalasi otetezera chitetezo. Malo osungiramo sodium cyanide ayenera kupangidwa kuti ateteze kutayikira komanso kuonetsetsa kuti mpweya wabwino umalowa bwino kuti utsi wapoizoni usachuluke.

Pomaliza, sodium cyanide ndi chinthu chofunikira komanso chosasinthika pakupanga mulu wa golide. Kapangidwe kake kapadera kamathandizira kusungunuka bwino ndikuchotsa golide kuchokera ku ore otsika. Komabe, ndi zopindulitsa zake zazikulu zimabwera zovuta zazikulu zachilengedwe ndi chitetezo zomwe ziyenera kuyang'aniridwa mosamala kuti zitsimikizire kuti migodi ya golide yokhazikika komanso yodalirika.