Tekinoroji Chikwata kubva kuUrbanMines chakasimbisa chidzidzo chekuchera mhangura kubva kune inonyungudutsa slag, iyo inoiswa pasi sulphating. Sulphating ye slag yakaitwa napyriteconcentrate kana flotation tailings patembiricha kubva 500 kusvika 650°C, uye calcine yakakonzerwa yakanyungudutswa nemvura.Zvigumisiro zvakaratidza kuti mhangura yakawanda yemhangura (70-73%) inowanikwa kubva kune calcine, inowanikwa nemaawa maviri neawa matatu sulphating pa 550 o C. Nzira yacho inosarudza sezvo 3-5% chete yesimbi inonyungudutswa.Mukuwedzera kune tembiricha ye sulphating, zvakaonekwa kuti mhedzisiro yakakura pamhangura leaching ine pyrite/flotation tailings: ratio.Migumisiro yakanakisisa yakawanikwa ne sulphating ye 5.00 g slag ne 2.00 g yepyrite kana 3.00 g yemaswe.
Kunyungudutsa Mhangura kuburikidza neAdditive
Furidzira mweya uye kupisa kuti uite iron uyepyritekusvika padanho re oxidation
2CuFeS2 + 3O2→2CuS + 2FeO + 2SO2
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Pisa calciate, quartz uye pyrite kusvika 1100℃
CuS + S(mu pyrite）+ O2→Cu2S + SO2
Zvichakadaro sezvo cupric sulfide inonaya
CaCO3 + SiO2→CaSiO3 + CO2
CaSiO3 + FeO + SiO2→2(Fe,Ca)SiO3
Saka gadzira iron oxide yakasanganiswa nechitofu dregs uye uzviparadzanise
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Bvisai cupric sulfide uye kufemera mumhepo
Cu2S + O2→2Cu + SO2↑
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Kana zvichidiwa, ita mamwe magetsiolytkusanganisa ne sulfuric acid uye cupric sulfide solution
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Gadzirisazve goridhe, sirivha uye platinamu kubva kune yakanaya isina kuchena
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Chengetedza mutobvu wakabviswa musimbi panzvimbo iri pamusoro peinonyungudika
Mhangura ine nzvimbo yakakwira yekunyungudika inopatsanura yoyangarara ichikwira