Umthengisi weSodium Fluoride eMzantsi Afrika

Yintoni iSodium Fluoride?

I-Sodium fluoride (NaF) yityuwa engaphiliyo ye-hydrofluoric acid, enikwa njengomgubo omhlophe wekristale okanye iigranules. Kwinkqubo yezimbiwa, i-sodium fluoride isetyenziswa kakhulu njengento yokunciphisa uxinzelelo kwiiminerali ze-gangue ze-silicate kunye ne-phyllosilicate - ngakumbi i-mica, i-talc, i-serpentine, kunye nezinye ii-silicate ze-magnesium okanye ze-calcium ezineendawo ezi-hydrophobic okanye ezi-weakly hydrophobic kwaye zihlala zintanta kunye neeminerali ze-sulphide, nto leyo ethoba umgangatho we-concentrate. I-Fluoride ion (F⁻) kwisisombululo ivuselela iindawo zezimbiwa ze-silicate ukuya emanzini, icinezela impendulo yazo yokuntanta.

Uxinzelelo lweSilicate kunye neMica

Kwimijikelezo ye-flotation ye-copper, i-lead-zinc, kunye ne-PGM ecubungula ii-ores ezine-silicate-bearing, i-mica (biotite, i-muscovite, i-phlogopite) kunye neeminerali zodongwe ziiminerali ze-gangue ezinengxaki ezixela ukuba zixinene neeminerali ze-sulphide, zinciphisa amanqanaba esinyithi kwaye zonyusa izinto zesohlwayo se-smelter. I-sodium fluoride kwimilinganiselo ye-100–500 g/t kwinqanaba lokulungisa iyayicinezela le minerali ye-silicate ngokufunxa i-fluoride kwiindawo zayo, izenze zibe manzi kwaye ithintele ukufunxa i-collector. Isetyenziswa rhoqo xa idityaniswe nezinye izinto ezifunxa i-silicate ezifana ne-carboxymethyl cellulose (CMC) okanye i-guar gum ukuze kuphuculwe ukukhetha, ngakumbi kwii-ores ezine-talc ephezulu okanye umxholo we-mica.

Isicelo sokuSebenza ngePhosphate

Kwi-phosphate flotation, i-sodium fluoride isetyenziselwa ukucinezela iiminerali ze-silica gangue (quartz, feldspar) kwaye ivumela ukutyibilika okukhethekileyo kwe-apatite kunye nabaqokeleli be-fatty acid. I-ion ye-fluoride yenza i-calcium fluoride enyibilikayo kancinci kwiindawo ze-silica, nto leyo enciphisa ukudada kwazo. I-Terracore Chemicals inikezela nge-sodium fluoride kudidi lobuchwephesha kwimigodi nakwizicelo zokucubungula izimbiwa kulo lonke elaseMzantsi Afrika.