Umhlinzeki we-Sodium Fluoride eNingizimu Afrika

Iyini i-Sodium Fluoride?

I-Sodium fluoride (NaF) iyi-inorganic salt ye-hydrofluoric acid, enikezwa njenge-white crystalline powder noma ama-granules. Ekucubungulweni kwamaminerali, i-sodium fluoride isetshenziswa kakhulu njengesidambisi esikhethiwe samaminerali e-silicate kanye ne-phyllosilicate gangue — ikakhulukazi i-mica, i-talc, i-serpentine, kanye nezinye i-magnesium noma i-calcium silicates ezinezindawo ezi-hydrophobic ngokwemvelo noma ezi-hydrophobic ngokwemvelo futhi ezivame ukuntanta namaminerali e-sulphide, okwehlisa izinga lokugxila. I-Fluoride ion (F⁻) esixazululweni isebenzisa izindawo ezi-silicate mineral surfaces emanzini, icindezela impendulo yazo yokuntanta.

Ukucindezeleka kwe-Silicate kanye ne-Mica

Kumasekethe okuflotha ethusi, i-lead-zinc, kanye ne-PGM acubungula ama-ore ane-silicate bearing, i-mica (biotite, i-muscovite, i-phlogopite) kanye namaminerali obumba yizimbiwa ze-gangue eziyinkinga ezibika ukuthi zigxile kumaminerali e-sulphide, zinciphisa amazinga ensimbi futhi zikhulisa izakhi zesijeziso se-smelter. I-sodium fluoride ngemithamo engu-100-500 g/t esigabeni sokulungisa isimo icindezela la maminerali e-silicate ngokumuncwa kwe-fluoride ezindaweni zawo, okwenza abe manzi futhi avimbele ukumuncwa kweqoqo. Ivame ukusetshenziswa ngokuhlanganiswa nezinye izinto zokucindezela i-silicate ezifana ne-carboxymethyl cellulose (CMC) noma i-guar gum ukuze kuthuthukiswe ukukhetha, ikakhulukazi kuma-ore anokuqukethwe okuphezulu kwe-talc noma i-mica.

Isicelo Sokucubungula i-Phosphate

Ekujuleni kwe-phosphate, i-sodium fluoride isetshenziselwa ukucindezela amaminerali e-silica gangue (i-quartz, i-feldspar) futhi ivumele ukujula okukhethekile kwe-apatite ngamaqoqo e-fatty acid. I-ion ye-fluoride yakha i-calcium fluoride encibilikayo kancane ezindaweni ze-silica, okunciphisa ukuntanta kwazo. I-Terracore Chemicals inikeza i-sodium fluoride ebangeni lobuchwepheshe lezicelo zokumba kanye nokucubungula amaminerali kulo lonke elaseNingizimu Afrika.