Chosanjikiza cha oxide pamwamba pa mbale yachitsulo chosapanga dzimbiri chotentha chimakhala chokhuthala. Ngati chichotsedwa ndi pickling ya mankhwala, sichidzangowonjezera nthawi yokolola ndikuchepetsa kukolola bwino, komanso kuonjezera mtengo wa pickling kwambiri. Choncho, njira zina ziyenera kugwiritsidwa ntchito ngati njira zothandizira kuti zithetsere mbale yachitsulo. Pali njira zitatu zazikuluzikulu zopangira ma pickling:

1. Kuwombera kuwombera

Kuwombera ndi njira yomwe imagwiritsidwa ntchito kwambiri pamakina dephosphorization pakadali pano. Mfundo yake ndi kugwiritsa ntchito zida zowombera zowombera popopera kuwombera zitsulo zowoneka bwino (mchenga) kukhudza mbale yachitsulo chosapanga dzimbiri kuti muchotse wosanjikiza wa okusayidi pamtunda wachitsulo. Pambuyo kuwombera peening mankhwala, mbali ya okusayidi wosanjikiza ndi kuchotsedwa, ndi dongosolo la otsala okusayidi wosanjikiza pa bolodi pamwamba amakhala wapakatikati ndi lotayirira, zimene zimapindulitsa wotsatira pickling ndondomeko.

2. Alkali leaching mankhwala

Mankhwala a alkali leaching ndi oxidative alkaline leaching komanso amachepetsa leaching ya alkaline. Mtundu wa alkali leaching umatchedwanso "njira yosamba mchere". Alkaline CrO3, ndipo chifukwa cha kusintha kwa kapangidwe ndi kuchuluka kwa oxide wosanjikiza, oxide wosanjikiza adzagwa. Kuchepetsa zamchere leaching ndi kusintha oxides insoluble zitsulo monga chitsulo, faifi tambala, chromium ndi zina insoluble zitsulo okusayidi mu wosanjikiza okusayidi kubwerera ku zitsulo ndi otsika mtengo okusayidi kudzera amphamvu kuchepetsa wothandizila NaH, ndi kupanga okusayidi wosanjikiza kuswa ndi kugwa, potero kufupikitsa nthawi pickling, kusintha dzuwa lonse.

Ndizofunikira kudziwa kuti mbale zovala zitsulo zosapanga dzimbiri zipangitsa kuti pakhale kuipitsidwa kwa Cr6+ panthawi yamankhwala a oxidative alkali leaching. Kuchepetsa mankhwala a alkaline leaching kumatha kuthetsa vuto la kuipitsidwa kwa Cr6 +, koma zopangira zake zazikulu, NaH, sizingapangidwe ku China. Pakalipano, njira yomwe imagwiritsidwa ntchito kwambiri ku China ndi potassium permanganate oxidation mtundu wa alkali leaching chithandizo, pamene kuchepetsa mtundu wa alkali leaching mankhwala amagwiritsidwa ntchito kunja.

3. electrolysis mchere wosalowerera ndale

Njira yopanda ndale yamchere ya electrolysis imagwiritsa ntchito njira yamadzi ya Na2SiO4 ngati electrolyte. Chitsulo chosapanga dzimbiri chophimbidwa ndi filimu chimatha kudutsa m'munda wamagetsi pakati pa cathode ndi anode, mosalekeza kusintha cathode ndi anode, ndikuchotsa pamwamba pa oxide wosanjikiza kupyolera muzochitika zamakono. Limagwirira wa ndale mchere electrolysis ndondomeko zachokera chakuti zovuta-kusungunuka oxides wa chromium, manganese, ndi chitsulo mu okusayidi wosanjikiza ndi oxidized kuti mkulu-mtengo sungunuka ayoni, potero Kusungunula wosanjikiza okusayidi; Chitsulo mu batire ndi oxidized mu ions, kotero kuti oxide wosanjikiza womangidwa pamwamba ndi peeled.