
Selelekela
Indastering ea merafo le ho ntša khauta, ho eketsa sekhahla sa ho hlaphoheloa ha khauta ho tsoa lirafshoeng ke habohlokoa haholo. Mokhoa o mong o bontšitseng tšepo ke tšebeliso e kopaneng ea Sodium cyanide le Potassium bromide . Sengoliloeng sena sa blog se tla hlahloba hore na motsoako ona o sebetsa joang le melemo ea oona e ka bang teng ho ntlafatseng ho hlaphoheloa ha khauta.
Karolo ea Sodium Cyanide ho Nōkiloeng Khauta
Ka nako e telele sodium cyanide e bile sesebelisoa sa bohlokoa ts'ebetsong ea ho ntša khauta . Mokhoa oa cyanidation, o qalileng ka 1887 ha o ne o sebelisoa ka lekhetlo la pele ho ntša khauta le silevera, o ntse o le mokhoa o tloaelehileng indastering ea khauta ea lefats'e. Ts'ebetso ena e bonolo haholo. Bakeng sa li-ore tsa khauta tsa maemo a tlase, ore e qala ka ho silakanngoa ho fihlela boholo bo loketseng ho eketsa sebaka sa eona sa bokaholimo, ho nolofatsa karabelo ka tharollo ea cyanide. Ebe, tharollo ea cyanide (hangata Sodium Cyanide e qhibilihisitsoeng ka metsing) ea hlahisoa. Ha ho na le oksijene, khauta ka har'a ore e arabela le li-ion tsa cyanide ho theha metsoako ea cyanide ea khauta e qhibilihang. Karabelo e nolofalitsoeng ea lik'hemik'hale ke: 4Au + 8NaCN + O₂ + 2H₂O → 4Na(Au(CN)₂) + 4NaOH. Sena se lumella khauta ho qhibiliha le ho aroloa ho matrix ea ore. Sodium cyanide e na le kamano e phahameng le khauta, e e nolofalletsang ho qhala khauta ka khetho ho tsoa oreng, leha boleng ba khauta bo le tlase. Khetho ena e bohlokwa kaha e dumella ho ntshwa ha kgauta ho tswa majweng a bohlokwa moo diminerale tse ding di ka bang teng ka bongata bo boholo. Maemong a mangata, ho itshetlehile ka mofuta wa majwe, cyanidation ka sodium cyanide e ka fihlella sekgahla se phahameng sa ho kgutla ha kgauta, hangata ho tloha ho 50 - 80%, mme maemong a mang, ho fihla ho 90%.
Mosebetsi oa Potassium Bromide
Potassium bromide e boetse e bapala karolo ea bohlokoa ts'ebetsong ea ho ntša khauta. Ho ntšoa ha khauta e thehiloeng ho bromide ke ts'ebetso e ts'episang e 'nileng ea ithutoa haholo. Ho sebelisa bromide e le sebaka kapa se ntlafatsang ts'ebetsong ea ho ntša khauta ho na le melemo e mengata. E batla e le theko e tlase, e na le sekhahla se phahameng sa leaching (ho tloha ho 90 - 95% maemong a mang), lebelo le potlakileng la leaching, ha e senyehe maemong a nepahetseng, 'me e ka ba ntle le chefo maemong a tlase. Ha e sebelisoa hammoho le li-reagents tse ling, e ka ntlafatsa katleho ea kakaretso ea ts'ebetso ea ho ntša khauta.
Synergy ea Sodium Cyanide le Potassium Bromide
Ha sodium cyanide le potasiamo bromide li sebelisoa ka tandem, li ka theha phello ea synergistic. Li-ion tsa bromide tse tsoang potassium bromide li ka sebelisana le khauta - cyanide complexes e entsoeng ke sodium cyanide. Tšebelisano ena e ka lebisa ho thehoeng ha li-complexes tse tsitsitseng kapa tse ngata tse qhibilihang, tse ka eketsang ho qhibiliha ha khauta ka tharollo. Ka mohlala, li-ion tsa bromide li ka kenya letsoho karabelong e fetolang sebopeho sa khauta - cyanide complex, e leng ho nolofalletsang khauta ho tsoela pele ho sebetsa le ho arohanngoa le tharollo. Ho feta moo, boteng ba bromide bo ka ama boleng ba bokaholimo ba likaroloana tsa khauta ka har'a ore. E ka thusa ho phunya masela a bokaholimo kapa litšila tse holim'a likaroloana tsa khauta, ho lumella li-ion tsa cyanide tse tsoang sodium cyanide ho fihlella bokaholimo ba khauta, ka hona ho khothaletsa ho qhibiliha ha khauta.
Lithuto le Liphetho
Lithuto tse 'maloa le lits'ebetso tse sebetsang li bonts'itse katleho ea motsoako ona. Litlhophisong tse ling tsa liteko, ha ho etsoa ores ea khauta ka tharollo e kopaneng ea sodium cyanide le potassium bromide, litekanyetso tsa ho khutlisa khauta li ne li le holimo haholo ha li bapisoa le ho sebelisa sodium cyanide feela. Mohlala, phuputsong e itseng, sekhahla sa ho khutlisa khauta se eketsehile ho tloha ho 70% ha ho sebelisoa sodium cyanide feela ho ea ho 85% ha potassium bromide e kentsoe tsamaisong. Ts'ebetsong ea 'nete ea merafo ea lefats'e, merafo e meng e amohetseng ts'ebeliso e kopaneng ea li-reagents tsena tse peli e tlalehile e ntlafalitsoe 经济效益. Ba khonne ho ntša khauta e ngata ho tloha ka tekanyo e lekanang ea ore, e seng feela ho eketsa boleng ba mohloli empa hape e eketsa phaello ea mosebetsi oa merafo.
Mehopolo ea Tikoloho le Polokeho
Ho bohlokoa ho hlokomela hore ka bobeli sodium cyanide le potassium bromide li hloka ho sebetsoa ka hloko. Sodium cyanide ke ntho e chefo haholo, 'me tšebeliso ea eona le lipalangoang li tlas'a melao e thata. Litharollo life kapa life tsa litšila tse nang le sodium cyanide li tlameha ho tšoaroa hantle ho thibela tšilafalo ea tikoloho. Ka mohlala, phekolo ea hydrogen peroxide, e ka sebelisoa ho oxidize le ho theola sodium cyanide marong a litšila, ho hlahisa sodium bicarbonate le khase ea ammonia. Potassium bromide, le hoja ka kakaretso e se chefo ho feta sodium cyanide, e boetse e hloka ho tšoaroa ka tsela e nepahetseng ho netefatsa polokeho mosebetsing. Ha li sebelisa motsoako oa li-reagents tsena tse peli, lik'hamphani tsa merafo li tlameha ho kenya tšebetsong liprothokholo tse tiileng tsa polokeho le mekhoa ea taolo ea tikoloho ho fokotsa likotsi.
fihlela qeto e
Tšebeliso e kopaneng ea sodium cyanide le potasiamo bromide e fana ka mokhoa o ts'episang oa ho ntlafatsa litekanyetso tsa ho khutlisa khauta. Ka ho utloisisa litšebelisano tsa lik'hemik'hale pakeng tsa li-reagents tsena tse peli le mesebetsi ea tsona ka bomong ts'ebetsong ea ho ntša khauta, lik'hamphani tsa merafo li ka ntlafatsa mekhoa ea tsona ea ho ntša. Leha ho le joalo, ho bohlokoa ho leka-lekanya melemo e ka bang teng le mehato e tiileng ea tikoloho le polokeho. Ha tlhoko ea khauta e ntse e hola 'me li-deposit tsa boemo bo holimo li ntse li haella, mekhoa e mecha e kang motsoako ona e tla bapala karolo ea bohlokoa haholo nts'etsopeleng ea moshoelella ea indasteri ea merafo ea khauta.
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