Lipatlisiso mabapi le Thibelo ea Arsenic le Matlafatso ea Sulfur-Iron ho Mehatla ea Cyanidation

Selelekela

Li-cyanidation tailings tse hlahisoang nakong ea ts'ebetso ea ho hula indastering ea metallurgic li baka mathata a bohlokoa a tikoloho ka lebaka la litaba tsa tsona tse phahameng tsa arsenic. Ntle le mathata a tikoloho, mehatla ena e emela mohloli o ka bang teng oa bobeli. Ka hona, ho bohlokoa ho theha mekhoa e sebetsang ea ho ntlafatsa ka nako e ts'oanang likarolo tsa bohlokoa joalo ka sebabole le tšepe ha o ntse o fokotsa litaba tsa arsenic. Thuto ena e tsepamisitse maikutlo ho Matšoao a cyanidation ho tloha setsing sa smelter, se ikemiselitseng ho fihlela lipheo tsena ka mokhoa o hlophisitsoeng hantle oa ho phaphamala.

Methodology

Mohlala oa Mohloli

Mehatla ea cyanidation e sebelisitsoeng phuputsong ena e fumanoe ho tsoa ho smelter e itseng. Mehlala ea pele e ne e tšoauoa ho utloisisa sebopeho sa bona sa mantlha le thepa ea mineralogical pele ba tsoela pele ka liteko tsa ho phaphamala.

Teko ea Flotation

Asiti ea sulfuric (H_2SO_4) e ne e sebelisoa e le sebatli sa sebabole. Motsoako oa sodium humate le calcium hypochlorite (Ca(ClO)_2) e ne e sebelisoa e le arsenic inhibitor. Liteko tse ngata tsa flotation li ile tsa etsoa tlas'a maemo a laoloang ka hloko. Mekhahlelo ea liteko, ho kenyelletsa tekanyo ea reagent, letsoalo la pulp, le nako ea ho phaphamala, li ile tsa ntlafatsoa ho fihlela liphetho tse ntle ka ho fetisisa tsa karohano.

Mekhoa ea Tlhahlobo

Scanning Electron Microscopy (SEM) le X-ray Diffraction (XRD) li ile tsa sebelisoa ho sekaseka lihlahisoa tsa flotation. SEM e ne e sebelisetsoa ho sheba morphology ea bokaholimo le likaroloana tsa lisampole. Tlhahlobo ea XRD e thusitse ho tseba mekhahlelo ea mineralogical e teng lisampoleng, e fana ka leseli mabapi le boemo ba ho hlaha ha arsenic ka har'a mehatla ea cyanidation.

Results

Liteko tsa flotation li bontšitse liphello tse tsotehang. Kereiti ea sebabole ka har'a concentrate e fihlile ho feta 48%, athe kereiti ea arsenic e ile ea fokotsoa ka katleho ho ba ka tlase ho 0.2%. Liphetho tsena li bonts'a katleho ea li-reagents tse khethiloeng le ts'ebetso e ntlafalitsoeng ea ho phaphamala ho fihlela lipheo tse peli tsa ho matlafatsa tšepe ea sebabole le ho tlosa arsenic.

Puisano

Ketsahalo ea Naha ea Arsenic

Ka tlhahlobo ea SEM le XRD, boemo ba ho hlaha ha arsenic mehatleng ea cyanidation bo ile ba khethoa. Arsenic e fumanoe e amahanngoa le liminerale tse itseng, tse ileng tsa susumetsa boitšoaro ba eona nakong ea ts'ebetso ea ho phaphamala. Ho utloisisa boemo bona ba ketsahalo ho bohlokoa bakeng sa ho theha maano a karohano a reriloeng haholo.

Mabaka a Karohano e Thata ea Sebabole le Arsenic

Boithuto bona bo boetse bo entse tlhahlobo ea pele ea mabaka a bakang karohano e thata ea sebabole le arsenic mehatleng ea cyanidation. Lintho tse kang ho hasana hantle ha liminerale tse nang le arsenic, litšebelisano tsa holim'a metsi pakeng tsa liminerale tse fapaneng, le lik'hemik'hale tse rarahaneng tsa mehatla li tlatselitse bothateng bona. Tšebeliso ea motsoako oa (H_2SO_4), sodium humate, le (Ca(ClO)_2) e fokolitse mathata ana ho isa bohōleng bo itseng, joalokaha ho pakoa ke liphello tse ntle tsa ho phaphamala.

fihlela qeto e

Phuputso ena e atlehile ho hlahisa mokhoa oa ho phaphamala bakeng sa ho nontša sulphur-aron le ho tlosa arsenic ho tloha mehatleng ea cyanidation. Tšebeliso ea (H_2SO_4) e le sebabole le motsoako oa sodium humate le (Ca(ClO)_2) e le arsenic inhibitor e ipakile e sebetsa. Litlhahlobo tsa SEM le XRD li fane ka lintlha tsa bohlokoa mabapi le boemo ba ho hlaha ha arsenic le mabaka a karohano e thata ea sebabole-arsenic. Liphuputso tsa nako e tlang li ka tsepamisa maikutlo ho ntlafatseng ts'ebetso ea ho phaphamala, ho lekola li-reagents tse ling, le ho ntlafatsa ts'ebetso e akaretsang ea ho hlaphoheloa ha lisebelisoa le ts'ireletso ea tikoloho.