Mokhoa oa ho qhibilihisa le ho hloekisa arsenic ke mokhoa o sebelisang phapang ea ho feto-fetoha ha arsenic le metsoako ea eona ho arola le ho hloekisa, haholo-holo o loketseng ho tlosa sebabole, selenium, tellurium le litšila tse ling ho arsenic.Mehato le lintho tsa bohlokoa tseo u lokelang ho nahana ka tsona ke tsena:
1.Tlhokomelo ea pele ea thepa e tala
- Mehloli ea arsenic e tala: hangata e le sehlahisoa se setseng sa ho qhibilihisa diminerale tse nang le arsenic (mohlala, arsenite, realgar) kapa matlakala a sebediswang hape a nang le arsenic.
- Ho besa ka oxidative(boikhethelo): Haeba thepa e tala e le arsenic sulfide (mohlala, As₂S₃), e hloka ho besoa pele ho fetoloa hore e be volatile As₂O₃
As2S3+9O2→As2O3+3SO2As2S3+9O2→As2O3+3SO2
2.Yuniti ea ho qhibilihisa
- Lisebelisoa: Quartz kapa ceramic still (e hanelang mafome, e hanelang mocheso o phahameng), e nang le tube ea condenser le botlolo ea ho amohela.
- Tšireletso e sa sebetseng: Naetrojene kapa carbon dioxide li hlahisoa ho thibela oxidation ea arsenic kapa kotsi ea ho phatloha (mouoane oa arsenic o ka cha).
3.Mokhoa oa ho qhibilihisa
- Taolo ea mocheso:
- Ho nyenyefatsa ha arsenic: As₂O₃ sublimation ho 500-600 °C (sublimation e hloekileng ea arsenic ho hoo e ka bang 615 °C).
- Karohano ea litšila: litšila tse belang hanyane tse kang sebabole le selenium li fetoha ka mokhoa o ikhethileng 'me li ka aroloa ka ho aroloa ha condensation.
- Pokello ea mouoane: Mouoane oa arsenic o fetoha As₂O₃ e hloekileng haholo kapa arsenic ea mantlha sebakeng sa condensation (100-200°C).).
4.Kamora ho sebetsa
- Phokotso(haeba ho hlokahala arsenic ea motheo): Phokotso ea As₂O₃ ka khabone kapa haeterojene
As2O3+3H2→2As+3H2OAs2O3+3H2→2As+3H2O
- Ho qhibilihisa ka vacuum: tlhoekiso e eketsehileng ea arsenic ea mantlha ho tlosa litšila tse setseng tse feto-fetohang.
5.Mehato ya tlhokomelo
- Tšireletso ea chefo: Ts'ebetso eohle e koetsoe, e na le lisebelisoa tsa ho lemoha ho lutla ha arsenic le kalafo ea tšohanyetso.
- Kalafo ea khase ea mohatla: Kamora ho kolobisoa, khase ea mohatla e hloka ho monngoa ke tharollo ea lye (joalo ka NaOH) kapa ho kenngoa ha khabone e sebetsang ho qoba As₂O₃.mesi e kotsi.
- Polokelo ea tšepe ea arsenic: e bolokiloe sepakapakeng se sa sebetseng ho thibela oxidation kapa deliqueescent.
6. BohloekiNtlafatso
- Ho qhala ka mokhoa oa mekhahlelo e mengata: Ho qhibilihisa ka mokhoa o pheta-phetoang ho ka ntlafatsa bohloeki ho feta 99.99%.
- Ho qhibiliha ha sebaka (boikhethelo): Ho hlwekisa arsenic ea motheo sebakeng seo ho fokotsa litšila tsa tšepe.
Masimo a kopo
Arsenic e hloekileng haholo e sebelisoa linthong tsa semiconductor (mohlala, GaAs).dikristale), di-additives tsa alloy, kapa tlhahisong ya digalase tse ikgethang.Li-rocesse li hloka ho latela melao e thata ea tikoloho ho netefatsa polokeho le ho lahla litšila ho latela melao.
Nako ea poso: Mots'eanong-05-2025