Umthengisi weSodium Cyanide eMzantsi Afrika

Yintoni iSodium Cyanide?

I-Sodium cyanide (NaCN) yityuwa engaphiliyo ye-hydrocyanic acid kunye ne-reagent yekhemikhali ebalulekileyo yokubuyisela igolide nesilivere ngokukhuhla i-cyanide (inkqubo ye-cyanidation). Kwiisekethe ze-alkaline leach, i-NaCN yenza ii-complexes ze-cyanide zegolide ezinyibilikayo [Au(CN)₂⁻] ezifunyanwa ziinkqubo ze-carbon-in-pulp (CIP), i-carbon-in-leach (CIL), okanye i-zinc precipitation (Merrill-Crowe). I-Sodium cyanide ikwasetyenziswa kakhulu kwi-flotation njenge-pyrite depressant, icinezela ngokukhethekileyo i-pyrite kunye ne-iron sulphide flotation ngokwenza ii-complexes ze-iron cyanide surface ezizinzileyo ezithintela ukutsalwa kwe-collector, ngelixa zishiya i-target copper, gold, kunye ne-PGM sulphides zifumaneka ukuze ziqokelelwe.

Izicelo zokuFundisa kunye nokuDakumba

Kwi-gold leaching, i-NaCN yongezwa kumanqanaba e-0.01–0.05% (100–500 ppm NaCN) kwi-pH 10.5–11 kwiisekethe ze-tank leach ezivuthulukileyo. Ioksijini enyibilikisiweyo (umoya okanye i-O₂ ecocekileyo kwiinkqubo zoxinzelelo oluphezulu) iyafuneka ukuze kunyibilike igolide. Kwi-flotation, i-NaCN yongezwa kwi-mill okanye kwi-flotation feed njengesithomalalisi kwi-dosages ye-50–500 g/t ukuze kuncitshiswe i-pyrite, i-sphalerite (zinc), kunye neeminerali ze-iron sulphide ngokukhetha, kuphuculwe umgangatho we-copper kunye ne-gold concentrate. Ukusetyenziswa kwayo kufuna ulawulo olucokisekileyo lwe-cyanide concentration, i-pH, kunye neemeko zesekethe ukuze kulinganiswe ukusebenza kakuhle koxinzelelo ngokuchasene nokubuyiselwa kwezimbiwa ekujoliswe kuzo.

Ukuthobela uNikezelo kunye nokuLawulwa kweMithetho

I-sodium cyanide yinto enobuthi kakhulu kwaye ilawulwa yimithetho. IiTerracore Chemicals zibonelela nge-NaCN ngokuhambelana nayo yonke imigaqo yaseMzantsi Afrika esebenzayo egubungela ukuthuthwa kwayo, ukugcinwa, ukuphathwa, kunye nokusetyenziswa kwayo kokugqibela. Ubonelelo lukhawulelwe kwimisebenzi yokwemba eqinisekisiweyo eneziseko zokhuseleko ezifanelekileyo. Amaxwebhu apheleleyo okhuseleko (i-SDS, iinkqubo zokuphatha, impendulo engxamisekileyo) anikezelwa kuzo zonke ii-odolo. Ukuthobela ukungeniswa nokuthunyelwa ngaphandle kwemveliso kwi-International Cyanide Management Code (ICMC) kusebenza kwimisebenzi efanelekileyo.