Ucwaningo nge-Arsenic Inhibition kanye Nokuthuthukisa I-Sulfur-Iron ku-Cyanidation Tailings

Isingeniso

Izinsalela ze-cyanidation ezikhiqizwa ngesikhathi sezinqubo zokukhipha embonini ye-metallurgical zibangela izinselele ezinkulu zemvelo ngenxa yokuqukethwe kwazo okuphezulu kwe-arsenic. Ngaphezu kokukhathazeka kwemvelo, lezi zinsalela zimelela insiza yesibili engaba khona. Ngakho-ke, kubalulekile ukuthuthukisa izindlela ezisebenzayo zokucebisa ngasikhathi sinye izakhi ezibalulekile njengesulfure nensimbi ngenkathi kunciphisa okuqukethwe kwe-arsenic. Lolu cwaningo lugxile kukho I-cyanidation tailings kusuka kumshini wokuncibilikisa, okuhloswe ngawo ukufeza lezi zinhloso ngenqubo yokuntanta eklanywe kahle.

Indlela yokusebenzisa

Umthombo weSampula

Imisila ye-cyanidation esetshenziswe kulolu cwaningo itholwe kumshini wokuncibilikisa othize. Amasampula okuqala ayephawulwe ukuze aqonde ukwakheka kwawo okuyisisekelo kanye nezakhiwo ze-mineralogical ngaphambi kokuqhubeka nokuhlolwa kwe-flotation.

Ukuhlolwa kwe-Flotation

I-Sulphuric acid (H_2SO_4) yaqashwa njenge-activator sulphur. Inhlanganisela ye-sodium humate ne-calcium hypochlorite (Ca(ClO)_2) yasetshenziswa njenge-arsenic inhibitor. Ukuhlolwa okuningi kwe-flotation kwenziwa ngaphansi kwezimo ezilawulwa ngokucophelela. Amapharamitha okuhlola, okuhlanganisa umthamo we-reagent, ukuminyana kwe-pulp, nesikhathi sokuntanta, athuthukiswa ukuze kuzuzwe imiphumela engcono kakhulu yokuhlukanisa.

Amasu Okuhlaziya

Ukuskena i-Electron Microscopy (SEM) kanye ne-X-ray Diffraction (XRD) kwasetshenziswa ukuhlaziya imikhiqizo yokuntanta. I-SEM yasetshenziswa ukuze kubhekwe i-morphology yendawo kanye nezici zezinhlayiyana zamasampuli. Ukuhlaziywa kwe-XRD kusize ukuhlonza izigaba ze-mineralogical ezikhona kumasampuli, kunikeze imininingwane ngesimo sokwenzeka kwe-arsenic ngaphakathi kwemisila ye-cyanidation.

Imiphumela

Ukuhlolwa kwe-flotation kubonise imiphumela emangalisayo. Izinga lesulfure ekugxiliseni lifinyelele ngaphezu kwama-48%, kanti izinga le-arsenic lehliswe ngempumelelo laba ngaphansi kuka-0.2%. Le miphumela ikhombisa ukusebenza kahle kwama-reagents akhethiwe kanye nenqubo ye-flotation eyenziwe kahle ekufinyeleleni imigomo emibili yokunothisa i-sulphur-iron kanye nokususwa kwe-arsenic.

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Isenzeko State of Arsenic

Ngokuhlaziywa kwe-SEM ne-XRD, isimo sokuvela kwe-arsenic kumsila we-cyanidation sanqunywa. I-Arsenic yatholakala ihlotshaniswa namaminerali athile, okwathonya ukuziphatha kwayo phakathi nenqubo yokuntanta. Ukuqonda lesi simo sokwenzeka kubalulekile ukuze kuthuthukiswe amasu okuhlukanisa ahlosiwe.

Izizathu Zokuhlukaniswa Okunzima Kwesulfure ne-Arsenic

Ucwaningo luphinde lwenze ukuhlola kokuqala kwezizathu ezibangela ukuhlukaniswa okuyinselele kwesulfure ne-arsenic kumsila we-cyanidation. Izinto ezifana nokusatshalaliswa kahle kwamaminerali ane-arsenic, ukusebenzisana kwendawo phakathi kwamaminerali ahlukahlukene, kanye nokwakheka kwamakhemikhali okuyinkimbinkimbi kwezinsalela kube nomthelela kulobu bunzima. Ukusetshenziswa kwenhlanganisela ye-(H_2SO_4), i-sodium humate, kanye ne-(Ca(ClO)_2) kwehlisa lezi zinselele ngezinga elithile, njengoba kufakazelwa yimiphumela emihle yokuntanta.

Isiphetho

Lolu cwaningo lwakha ngempumelelo inqubo yokuntanta yokunothisa i-sulphur-ayoni kanye nokukhipha i-arsenic emisileni ye-cyanidation. Ukusetshenziswa kwe-(H_2SO_4) njenge-activator sulphur kanye nenhlanganisela ye-sodium humate kanye ne-(Ca(ClO)_2) njenge-arsenic inhibitor kubonakale kuphumelela. Ukuhlaziywa kwe-SEM ne-XRD kunikeze imininingwane ebalulekile esimweni sokwenzeka kwe-arsenic kanye nezizathu zokuhlukana okunzima kwesulfure-arsenic. Ucwaningo lwesikhathi esizayo lungagxila ekuthuthukiseni inqubo yokuntanta, ukuhlola ezinye izinto ezisizayo, kanye nokwenza ngcono ukusebenza kahle okuphelele kokutholwa kwezinsiza kanye nokuvikelwa kwemvelo.