
Habka cyanidation-ka waa saldhig muhiim u ah soo saarista dahabka laga soo saaro macdantiisa. Fahmidda isticmaalka sodium cyanide inta lagu jiro hawshan ayaa muhiim u ah hagaajinta hufnaanta hawlgalka iyo yaraynta saameynta deegaanka. Maqaalkani wuxuu si qoto dheer u eegayaa hababka kala duwan ee gacan ka geysanaya isticmaalka Sodium Cyanide ee habka cyanidation-ka dahabka.
1. Bakhtiinta
Sodium cyanide wuxuu maraa burburka otomaatiga ah inta lagu jiro habka nadiifinta. Tani waxay keentaa sameynta asiidhka kaarboon, asiidhka formic, iyo ammonia. Falcelinta burburka otomaatiga ah waxay noqon kartaa mid adag waxaana saameeya arrimo ay ka mid yihiin heerkulka, fiirsashada, iyo joogitaanka kiciyeyaasha qaarkood.
2. Hydrolysis
Hydrolysis-ka Sodium cyanide waa waddo kale oo muhiim ah oo lagu isticmaalo. Falcelinta u dhaxaysa biyaha iyo sodium cyanide waa sidan soo socota:
( H2O + NaCN HCN + NaOH )
Haydarojiin cyanide (HCN), oo ah iskudhis aad u kacsan oo sun ah, ayaa la soo saaraa inta lagu jiro hydrolysis-kan. Xaddiga HCN ee la soo saaro wuxuu si dhow ula xiriiraa alkalinity-ga xalka. Marka qiimaha pH lagu hayo 12 ama ka sareeya, xalka cyanide wuxuu ahaanayaa mid deggan. Si kastaba ha ahaatee, walxaha hoos u dhigi kara qiimaha pH, sida kaarboon laba ogsaydh oo ka imanaya hawada, asiidhyada biyaha qurxinta, ayoonnada magnesium ee divalent ( Mg2+ ) iyo ayoonnada aluminium ee saddex-geesoodka ah ( A13+ ), iyo macdano kala duwan oo ku jira macdanta ama wax soo saarka oksaydhka ee macdanta sulfide , waxay dedejin karaan falcelinta hydrolysis-ka.
3. Samaynta Thiocyanate
Sodium cyanide waxay la falgashaa macdanta sulfide sida birta, naxaasta, iyo arsenic si ay u sameeyaan isku-dhafan thiocyanate ah. Falgalladani waxay u beddelaan aayoonnada cyanide noocyo aan firfircoonayn, taasoo si wax ku ool ah u yareynaysa xaddiga cyanide-ka bilaashka ah ee loo heli karo soo saarista dahabka . Samaynta isku-dhafkan thiocyanate ma aha oo kaliya inay kordhiso isticmaalka cyanide-ka laakiin sidoo kale waxay saamaysaa hufnaanta guud ee habka cyanidation-ka dahabka.
Fahamka hababkan isticmaalka ayaa siinaya fikrado qiimo leh oo loogu talagalay hawl-wadeennada warshadaha macdanta dahabka. Iyadoo si taxadar leh loola socdo loona xakameynayo xaaladaha geeddi-socodka cyanidation, waxaa suurtagal ah in la yareeyo isticmaalka cyanide, hagaajinta heerarka soo kabashada dahabka, iyo in la yareeyo raadadka deegaanka ee hawlaha macdanta dahabka.
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