Sodium cyanide e thusa joang merafong ea khauta?

Ka mokhoa o rarahaneng le mohlodi - ts'ebetso e matla ea Meepo ea Khauta, Sodium cyanide e bapala karolo ea bohlokoa 'me hangata e sa utloisisoe hantle. Sengoliloeng sena se ikemiselitse ho hlalosa ka botlalo hore na motsoako ona oa lik'hemik'hale o kenya letsoho joang ho ntšoa ha khauta ka har'a ores ea eona.

Molao-motheo oa Sodium Cyanide ka Khauta e Nkiloeng

Khauta, boemong ba eona ba tlhaho, hangata e ba teng ka har'a ores ea boemo bo tlase, e leng ho etsang hore ho be thata ho arohana le mafika le liminerale tse potolohileng. Sodium cyanide (NaCN) e sebetsana le khauta ka mokhoa o tsejoang e le Cyanidation. Li-ion tsa cyanide li teng sodium cyanide etsa moaho o tsitsitseng o nang le li-ion tsa khauta. Karabelo ea lik'hemik'hale e ka emeloa feela joalo ka:

4Au + 8NaCN+O_{2}+2H_{2}O\rightarrow4Na[Au(CN)_{2}]+4NaOH

Karabelo ena e khetha ho qhibiliha gauta ho tsoa holim'a tšepe, ho e arola ho gangue (liminerale tse sa batleheng le lejoe). Sephetho sa khauta - cyanide complex, [Au(CN)_{2}]^{-}, e qhibiliha ka metsing, e leng senotlolo sa karohano ea eona le likarolo tse ling tsa ore.

Mokhoa oa ho Sebelisa Sodium Cyanide Meepong ea Khauta

1. Tokiso ea Ore: Ntlha ea pele, khauta e chekiloeng - ore e jereng e siloa ebe e siloa ka phofo e ntle. Sena se eketsa bokaholimo ba ore, e leng se lumellang hore ho be le kamano e ntle pakeng tsa likaroloana tsa khauta le Sodium cyanide Tharollo.

2. Leaching: Joale ore e phofshoana e kenngoa ka litankang tse kholo kapa liqubu, 'me motsoako oa sodium cyanide o fafatsoa kapa oa phunyeletsoa ka oona. Motsoako oa cyanide o qhibilihisa khauta butle ka nako e ka tlohang ho lihora tse 'maloa ho isa ho matsatsi a' maloa, ho latela mofuta oa tšepe.

3. Ho tsosolosoa ha Khauta - Cyanide Complex: Ka mor'a hore Leaching ts'ebetso, tharollo e nang le khauta - cyanide complex e arohane le masala a tiileng (gangue). Hangata sena se etsoa ka mekhoa e kang ho hloekisa kapa ho hloekisa.

4. Pula ea Khauta: Ho fumana khauta e hloekileng ho tsoa ho khauta - tharollo e rarahaneng ea cyanide, ho eketsoa moemeli oa ho fokotsa, joalo ka lerōle la zinki. Zinc e tlosa khauta sebakeng se rarahaneng, e leng se etsang hore khauta e theohe e le ntho e tiileng. Karabelo ea lik'hemik'hale e tjena:

2Na[Au(CN)_{2}]+Zn\rightarrow2Au + Na_{2}[Zn(CN)_{4}]

Khauta e nang le pula e boetse e hloekisoa ka mekhoa e kang ho qhibilihisa ho fumana litšepe tsa khauta tse hloekileng.

Melemo ea ho Sebelisa Sodium Cyanide Meepong ea Khauta

1. Ho sebetsa hantle: Cyanidation ke e 'ngoe ea mekhoa e sebetsang ka ho fetesisa ea ho hula khauta ho tsoa ho ores ea boemo bo tlase. E ka khutlisa karolo e kholo ea khauta e teng ka har'a tšepe, hangata e fihla ho 80 - 95% ts'ebetsong e ntlafalitsoeng hantle.

2. Mosebetsi: Sodium cyanide e bonts'a boemo bo phahameng ba khetho ho khauta. E sebetsana le khauta ka mokhoa o ikhethileng ho feta liminerale tse ling tse ngata tse tloaelehileng tse fumanehang ka har'a ores ea khauta, e thusang ho arola khauta ho motsoako o rarahaneng oa lintho habonolo.

3. Litšenyehelo - Katleho: Ha ho bapisoa le mekhoa e meng ea ho ntša khauta, joalo ka ho kopanya mercury (e nang le likotsi tse kholo tsa tikoloho le bophelo bo botle) ​​kapa mekhoa e rarahaneng ea lik'hemik'hale le matla, cyanidation e sebelisang sodium cyanide e batla e le litšenyehelo - e sebetsa hantle, haholo-holo bakeng sa ts'ebetso ea merafo e meholo.

Mehopolo ea Tikoloho le Polokeho

Ho sa tsotellehe katleho ea eona, tšebeliso ea sodium cyanide merafong ea khauta ha e na khang. Sodium cyanide e chefo haholo. Ho dutla hofe kapa hofe kapa ho tshwara ditharollo tsa sodium cyanide ho ka baka kotsi e kgolo tikolohong le bophelong ba batho. Haeba ho ka tšoloha, cyanide e ka silafatsa mobu, mehloli ea metsi le ho ntša lintho tse phelang metsing kotsi. Ho fokotsa likotsi tsena, lik'hamphani tsa merafo li sebelisa melaoana e thata ea polokeho. Tsena li kenyelletsa marako a mabeli a polokelo le matangoana a leaching, ho lekola khafetsa maemo a cyanide melapong ea litšila, le tšebeliso ea mekhoa e tsoetseng pele ea kalafo ho ntša chefo ea cyanide - e nang le litšila pele e lahloa. Ho feta moo, ho ntse ho etsoa matsapa a ho hlahisa mekhoa e meng ea ho ntša khauta e baballang tikoloho, empa hajoale, cyanidation ka sodium cyanide e ntse e le mokhoa o ka sehloohong indastering ea merafo ea khauta ka lebaka la ts'ebetso ea eona le litšenyehelo tsa eona.

Qetellong, sodium cyanide ke sesebelisoa sa bohlokoa merafong ea kajeno ea khauta. Bokhoni ba eona ba ho khetha khauta ho tsoa ho ores, bo kopantsoeng le litšenyehelo tse tlase le ts'ebetso e phahameng, bo etsa hore e be ea bohlokoa haholo ha ho ntšoa tšepe ena ea bohlokoa. Leha ho le jwalo, indasteri e tlameha ho tswelapele ho leka-lekanya tshebediso ya yona le mehato e tiileng ya tikoloho le polokeho ho netefatsa hore ho na le mekgwa ya moshwelella ya merafo ya kgauta.