Ithimba Lochwepheshe abavela e-UrbanMines ligcizelele ukucwaninga kokukhipha ithusi ku-smelter slag, engaphansi kwe-sulphating. I-sulphating ye-slag yenziwa ngui-pyritei-concentrate noma i-flotation tailings emazingeni okushisa asuka ku-500 kuya ku-650°C, futhi i-calcine eyaba khona yacwiliswa ngamanzi.Imiphumela yabonisa ukuthi i-copper leaching ephezulu (70-73%) itholakala ku-calcine, etholwe nge-sulphating yamahora amabili nantathu ku-550 o C. Le nqubo iyakhetha njengoba kuphela u-3-5% wensimbi ecwilisiwe.Ngaphezu kokushisa kwe-sulphating, kwatholakala ukuthi umthelela omkhulu ekulethweni kwethusi kune-pyrite / flotation tailings: isilinganiso.Imiphumela emihle kakhulu yatholakala ngokufaka i-sulphating ye-5.00 g slag ne-2.00 g ye-pyrite noma i-3.00 g yemisila.
Ukuncibilikisa I-Copper ngokusebenzisa Isengezo
Vuthela umoya futhi uwushise ukuze wenze insimbi futhii-pyritefinyelela izinga le-oxidation
2CuFeS2 + 3O2→2CuS + 2FeO + 2SO2
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Shisisa i-calciate, i-quartz ne-pyrite ku-1100℃
I-CuS + S(ku-pyrite）+ O2→Cu2S + SO2
Phakathi naleso sikhathi njengoba i-cupric sulfide idlula
I-CaCO3 + SiO2→I-CaSiO3 + CO2
I-CaSiO3 + FeO + SiO2→2(Fe,Ca)SiO3
Ngaleyo ndlela khiqiza i-iron oxide exutshwe nezihlehla zesitofu bese uzihlukanisa
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Khipha i-cupritating sulfide bese uphephetha emoyeni
Cu2S + O2→2Cu + SO2↑
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Uma kudingekile, yenza ugesi owengeziweolytIqukethe i-sulfuric acid ne-cupric sulfide solution
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Sebenzisa kabusha igolide, isiliva neplatinamu kusuka odabeni olungcolile
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Gcina umthofu okhishwe ku-ore endaweni engaphezu kwendawo encibilikayo
Ithusi elinephuzu eliphezulu lokuncibilika lizohlukana bese lintanta liye phezulu