Gulu la akatswiri aukadaulo ochokera ku UrbanMines latsindika za kafukufuku wochotsa mkuwa kuchokera ku smelter slag, yomwe imayikidwa ndi sulphating. Sulphating ya slag idachitidwa ndipyritekuyika kapena kuyandama michira pa kutentha kuchokera 500 mpaka 650°C, ndipo chifukwa calcine anali leached ndi madzi.Zotsatirazi zikuwonetsa kuti kuchuluka kwa mkuwa (70-73%) kumapezeka kuchokera ku calcine, yomwe imapezedwa ndi maola awiri ndi atatu sulphating pa 550 o C. Njirayi imasankha popeza 3-5% yokha yachitsulo imachotsedwa.Kuphatikiza pa kutentha kwa sulphating, zidapezeka kuti mphamvu yayikulu pa leaching yamkuwa imakhala ndi ma pyrite / flotation tailings: chiŵerengero.Zotsatira zabwino kwambiri zidatheka ndi sulphating wa 5.00 g slag ndi 2.00 g wa pyrite kapena 3.00 g wa michira.
Kusungunula Mkuwa kudzera mu Zowonjezera
Wozani mpweya ndi kutentha kuti mupange chitsulo ndipyritekufika mulingo wa okosijeni
2CuFeS2 + 3O2→2CuS + 2FeO + 2SO2
↓
Kutenthetsa calciate, quartz ndi pyrite mpaka 1100℃
CUS + S(mu pyrite）+ O2→Cu2S + SO2
Panthawiyi, cupric sulfide ikukwera
CaCO3 + SiO2→CaSiO3 + CO2
CaSiO3 + FeO + SiO2→2(Fe,Ca)SiO3
Choncho pangani chitsulo okusayidi wosakaniza ndi chitofu nsenga ndi kuwalekanitsa
↓
Chotsani precipitating cupric sulfide ndi kuwuzira mu mpweya
Ku2S + O2→2Ku + SO2↑
↓
Ngati kuli kofunikira, onjezerani magetsiolytkusakaniza ndi sulfuric acid ndi cupric sulfide solution
↓
Bwezeraninso golide, siliva ndi platinamu kuchokera ku zinthu zonyansa zomwe zidagwa
↓
Sungani mtovu wotengedwa mu zitsulo pamalo okwera pamwamba pa malo osungunuka
Mkuwa wokhala ndi malo okwera osungunuka udzalekanitsa ndikuyandama m'mwamba