
Selelekela
Lefapheng la ho ntšoa ha khauta le lits'ebetso tse ling tsa ho khutlisa tšepe, ho tsoa ha cyanide, haholoholo ka sodium cyanide, esale e le mokhoa o sebelisoang haholo ka lilemo tse fetang lekholo. Ts'ebetso ena, e hlahisang tšepe e qhibilihang - cyanide complexes, e sebetsa empa e tobane le mathata a mmalwa. Taba e 'ngoe e kholo ke lebelo le liehang la ho arabela le tlhoko ea phepelo e lekaneng ea oksijene ho qhaqha litšepe tse kang khauta. Ke hona moo hydrogen peroxide (H₂O₂) e hlahile e le tlatsetso e ts'episang ho ntlafatsa ts'ebetso ea cyanide leaching.
Lintho tsa motheo tsa Cyanide Leaching
Cyanide leaching e sebetsa hobane li-ion tsa cyanide li ka sebetsana le litšepe ho etsa li-complexes tse tsitsitseng le tse qhibilihang. Ha ho tluoa tabeng ea ho ntša khauta, oksijene e phetha karolo ea bohlokoa e le ntho e etsang hore ho be le oxidizing. E thusa ho fetola khauta hore e be sebopeho se ka kopanang le li-ion tsa cyanide, e leng se etsang hore ho be le motsoako o qhibilihang o ka etsoang hape ho fumana khauta. Leha ho le joalo, libakeng tse ngata, oksijene e fumanehang ka tlhaho e tsoang moeeng hangata ha ea lekana. Khaello ena e lebisa liketsong tse liehang le ho ntša tšepe e sa fellang.
Kamoo Hydrogen Peroxide e Thusang Kateng Cyanide Leaching
1. Phepelo ea Oksijene
Hydrogen peroxide ke ntho e matla ea oxidizing. Ha e kenngoa mothapong oa cyanide leaching, ea senyeha ebe e ntša oksijene. Phepelo ena e eketsehileng ea oksijene e matlafatsa haholo oxidation ea litšepe nakong ea ts'ebetso ea leaching. Ho ore e nang le liminerale tsa sulfide, mohlala, oxidation ea sulfide ena ke oksijene ke ea bohlokoa bakeng sa ho lokolla khauta ka hare. Oksijene e lokolloang ke hydrogen peroxide e ka potlakisa mohato ona oa oxidation, e leng ho nolofalletsang cyanide hore e sebetsane le khauta hamorao.
2. Ho Potlakisa Sekhahla sa Leaching
Liphuputso li bontšitse hore hydrogen peroxide e ka eketsa lebelo le akaretsang la ts'ebetso ea cyanide leaching. Ha e fane ka oksijene e eketsehileng feela; e boetse e kenya letsoho liketsong tsa lik'hemik'hale tse senyang likarolo tse sireletsang holim'a likaroloana tsa ore. Ka nako e 'ngoe, li-sulfide tsa tšepe kapa liminerale tse ling li etsa lesela holim'a likaroloana tse nang le khauta, tse thibelang cyanide ho fihla khauta. Hydrogen peroxide e ka sebetsana le likarolo tsena, ebang ke ka ho li kenya ka oxidizing kapa ka ho li arola ka 'mele ka ketso ea li-radicals tsa mahala tse hlahisoang nakong ea ho bola. Sena se nolofalletsa li-ion tsa cyanide ho fumana khauta habonolo, kahoo ho eketsa lebelo leo khauta e qhibilihang ka lona.
3. Ho Fokotsa Tšebeliso ea Cyanide
Leaching ea setso ea cyanide, palo e kholo ea cyanide ha e sebelisoe feela karabelong ea khauta empa hape le karabelong ea lehlakore le li-ion tse ling tsa tšepe tse teng ka har'a ore, joalo ka koporo, zinki le tšepe. Lits'ebetso tsena tse lehlakoreng li fokotsa ts'ebetso ea khauta - cyanide 'me li eketsa litšenyehelo tse akaretsang tsa ts'ebetso ea leaching. Hydrogen peroxide e ka thusa ho fokotsa tšebeliso ea cyanide ka litsela tse peli. Ntlha ea pele, ka ho matlafatsa oxidation ea khauta, e khothalletsa ho thehoa ha khauta - cyanide complex ka potlako, ho siea nako e fokolang ea hore cyanide e sebetsane le litšepe tse ling. Ea bobeli, hydrogen peroxide e ka fetola sebōpeho sa li-ion tse ling tse sitisang tsa tšepe e le hore li se ke tsa sebetsa hanyenyane ka cyanide. Ka mohlala, e ka fetola li-ion tsa ferrous hore e be li-ion tsa ferric. Li-ion tsa ferric li theha li-complexes tse sa tsitsang tse nang le cyanide, tse fokotsang bongata ba cyanide e senyehileng ka lebaka la karabelo e sa hlahiseng litholoana.
Lithuto tsa Taba le Bopaki ba Teko
Liteko tse ngata tsa laboratori le liteko tsa indasteri li pakile katleho ea hydrogen peroxide ho cyanide leaching. Phuputsong e 'ngoe ea ho thata-ho - sebetsa ore ea khauta, ho eketsa hydrogen peroxide ho tharollo ea cyanide leaching ho ekelitse sekhahla sa khauta ea leaching ka 20 - 30% ha e bapisoa le leaching ea setso ea cyanide e nang le moea feela oa moea. Nako ea leaching e boetse e fokotsehile haholo, ho tloha matsatsing a 'maloa ho ea ho lihora tse' maloa feela.
Tšebelisong ea merafo ea khauta ea indasteri, ho sebelisoa hydrogen peroxide ts'ebetsong ea ho tsoa ha cyanide ho lebisitse phokotsong ea 15%. tšebeliso ea cyanide ha e ntse e boloka sekhahla se phahameng sa ho khutlisa khauta. Sena ha sea ka sa theola feela litšenyehelo tsa ts'ebetso tse amanang le ho reka cyanide empa hape se fokolitse likotsi tsa tikoloho tse amanang le tšebeliso ea cyanide le ho lahla.
Litaelo tsa ho sebelisa Hydrogen Peroxide
1. Ho tsepamisa maikutlo
Palo e loketseng ea hydrogen peroxide ho eketsa tharollo ea cyanide leaching e itšetlehile ka lintlha tse sa tšoaneng, ho kenyelletsa le mofuta oa tšepe, bongata ba cyanide e seng e ntse e le tharollo, le boteng ba liminerale tse ling. Ka kakaretso, likhakanyo tse lipakeng tsa 0.1 - 1% (ka molumo) li fumanoe li sebetsa hantle maemong a mangata. Empa haeba mahloriso a phahame haholo, a ka baka ho feta - oxidation ea tšepe, ho kenyelletsa le khauta. Oxidation ena e feteletseng e ka etsa metsoako ea khauta e qhibilihang hanyane mme ea fokotsa bongata ba khauta e ka bokelloang.
2. Taolo ea pH
Boemo ba pH ba tharollo ea leaching bo bohlokoa haholo ha u sebelisa hydrogen peroxide. Cyanide leaching hangata e etsahala ka pH e phahameng (hoo e ka bang 9 - 12) ho thibela ho thehoa ha khase e chefo ea hydrogen cyanide. Hydrogen peroxide e tsitsitse haholoanyane maemong a pH a holimo. Leha ho le joalo, haeba pH e phahame haholo, e ka fokotsa ts'ebetso ea hydrogen peroxide e le sesebelisoa sa oxidizing. Kahoo, taolo e hlokolosi ea pH ea hlokahala ho etsa bonnete ba hore cyanide le hydrogen peroxide ka bobeli li sebetsa hantle tsamaisong ea leaching.
3. Tšireletso
Hydrogen peroxide ke ntho e matla ea oxidizing 'me e ka ba kotsi haeba e sa tšoaroe ka nepo. E ka halefisa letlalo le mahlo, 'me ka mefuta e mengata, e ka ba ea phatloha. Ha u sebelisa hydrogen peroxide ho cyanide leaching, mehato e nepahetseng ea tšireletso e tlameha ho kenngoa ts'ebetsong. Sena se kenyelletsa ho sebelisa thepa ea ho itšireletsa, ho boloka le ho tšoara lik'hemik'hale ka nepo.
fihlela qeto e
Hydrogen peroxide e bonts'itse bokhoni bo boholo joalo ka kenyelletso ho Sodium cyanide lits'ebetso tsa leaching. Ka ho fana ka oksijene e eketsehileng, ho potlakisa sekhahla sa ho lutla, le ho fokotsa tšebeliso ea cyanide, e ka ntlafatsa ts'ebetso le moruo oa ho ntšoa ha tšepe, haholo-holo bakeng sa khauta. Leha ho le joalo, joalo ka ts'ebetso efe kapa efe ea lik'hemik'hale, ts'ebetso e nepahetseng le ho latela melao e tiileng ea ts'ireletso ho bohlokoa bakeng sa ts'ebetsong ea eona e atlehileng. Ha indasteri ea merafo e ntse e tsoela pele ho batla mekhoa e sebetsang hantle le e tšoarellang ea ho hula, tšebeliso ea hydrogen peroxide ho cyanide leaching e kanna ea ba ea bohlokoa le ho feta nakong e tlang.
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