Umthengisi weSodium Metabisulphite eMzantsi Afrika

Yintoni iSodium Metabisulphite?

I-Sodium metabisulphite (SMBS, Na₂S₂O₅) yityuwa ye-sulfite engaphiliyo ekhupha i-sulfur dioxide (SO₂) kwisisombululo samanzi nakwiimeko ze-asidi. Kwi-flotation chemistry, i-SMBS sisithomalalisi sokunciphisa uxinzelelo - sinciphisa iindawo ezi-oxidised kwi-iron sulphides (pyrite, pyrrhotite) kunye nezinye iiminerali, zitshabalalisa okanye zikhuphisana neendawo zokuqokelela i-adsorption kwaye ngaloo ndlela zicinezela i-flotation yazo. I-SMBS isebenza ngokukodwa kwi-pyrrhotite depression kwi-nickel kunye ne-PGM circuits, apho i-pyrrhotite yeyona minerali ye-iron sulphide gangue enengxaki kwaye kunzima ukuyicinezela ngelayimu okanye i-cyanide yodwa.

Uxinzelelo lwePyrrhotite kunye nePyrite

Kwi-PGM kunye ne-nickel flotation, i-SMBS (edla ngokufinyezwa ngokuthi yi-NaMBS kwi-mining practice yaseMzantsi Afrika) yeyona nto iphambili yokudambisa i-pyrrhotite, yongezwa kwi-mill okanye kwi-flotation circuit kwiidosi ze-0.5–5 kg/t kuxhomekeke kumxholo we-pyrrhotite kunye neemfuno ze-circuit. I-SMBS inciphisa umphezulu we-pyrrhotite oxidised, itshabalalisa amandla axutyiweyo aqhuba ukutsalwa kwe-collector kwaye ivelise umphezulu we-hydrophilic omelana nokutsalwa. Isetyenziswa rhoqo kunye nezinye izinto ezidambisayo (ilayimu ye-pH, i-carboxymethyl cellulose yokukhetha okongezelelweyo) kwiphakheji yokudakumba kwamacandelo amaninzi. Kwi-gold leaching, i-SMBS isetyenziselwa ukutshabalalisa i-cyanide engaphezulu (i-cyanide detox) kunyango lwamanzi amdaka.

Iinkcukacha zoNikezelo

I-Terracore Chemicals inikezela nge-sodium metabisulphite kwiingxowa ezingama-25 kg kunye neengxowa ezinkulu ze-1 MT kwimisebenzi yemigodi kunye neendawo zokucoca amanzi kuMzantsi Afrika. Amaphepha edatha yobuchwephesha kunye nesikhokelo sokusetyenziswa koyilo lwesekethe yokudambisa uxinzelelo ziyafumaneka xa ziceliwe.