Mokhoa o ka Sehloohong oa ho Agitation Cyanidation Leaching Meepong ea Khauta

Selelekela

Cyanidation leaching, e 'nileng ea sebelisoa tlhahiso ea indasteri ho tloha ka 1887. ke liminerale Mokhoa oa Leaching E sebelisang Nako litharollo e le li-leaching agents ho monya khauta le silevera thepa e tala ea khauta le silevera. Agitation cyanidation leaching ke o mong oa mekhoa ea bohlokoa ho cyanidation leaching, 'me e sebelisoa haholo indastering ea merafo ea khauta.

Molao-motheo oa Agitation Cyanidation Leaching

Cyanide, joalo ka Sodium cyanide (NaCN), ke reagent ea bohlokoa ts'ebetsong ea cyanidation. Sodium cyanide ke kristale e se nang 'mala le e bonaletsang, hangata e bohlooho-bosehla ka lebaka la litšila. E qhibiliha haholo ka metsing, 'me e qhibiliha ka metsing ho feta 20%. Ha pH ea tharollo ea eona e nang le metsi e e-na le asiti ho pH = 7. cyanide e batla e senyeha ka ho feletseng hore e be khase ea hydrogen cyanide, e leng khase e se nang mebala le e chefo haholo. Ka tharollo, hydrogen cyanide ke asiti e fokolang, e thata ho ionize, 'me ha e na phello ea leaching ho khauta le silevera. Ha pH ea boleng e le 12. cyanide ka tharollo e batla e ikarola ka ho feletseng ho li-ion tsa cyanide. Ka hona, ts'ebetso ea cyanidation e tlameha ho etsoa ka mokhoa oa alkaline.

Ka kakaretso, boteng ba oksijene, cyanidation leaching ea khauta ke ts'ebetso ea electrochemical corrosion. Cyanide e kopana le khauta tikolohong ea alkaline ka ho kenya letsoho ha oksijene, e etsa metsoako ea khauta e qhibilihang ka metsing, kahoo e nolofalletsa ho qhibiliha ha khauta ho tloha ore.

Mokhoa oa ho Agitation Cyanidation Leaching

1. Tokisetso ea Leaching Raw Materials

• Ho senya: Ore e tala ea khauta e rafshoang e qala ka ho tšeloa ka har'a sesilara bakeng sa ho silakanya. Mokhoa oa ho sila o arotsoe ka ho silakanya ho hoholo, ho silakanya ka mokhoa o mahareng, le ho silakanya hantle. Li-crusher tsa mehlahare le li-cone crushers li atisa ho sebelisoa bakeng sa ho pshatla mahoashe le mahareng, haholo-holo ho pshatla likotoana tse kholo tsa ore ka likaroloana tse nyane, hangata ka boholo ba karoloana e laoloang ka lisentimitara tse 'maloa. Li-crushers tsa hamore li sebelisoa haholo-holo bakeng sa ho silakanya hantle.

• sila: Ore e pshatlehileng e kena ka leloaleng la bolo bakeng sa ho tsoela pele ho sila ka boholo bo loketseng. Hangata, ho hlokahala hore boholo ba likaroloana tsa ore bo fihle -200 mesh accounting bakeng sa 60% - 90%, e le hore liminerale tsa khauta li arohane ka ho feletseng. Ka kakaretso, liloala tsa mofuta oa lattice li sebelisetsoa ho sila mahoashe, 'me liloala tsa mofuta oa libolo li sebelisoa bakeng sa ho sila hantle.

• Tokiso ea Slurry: Motsoako oa majoe a fatše o kena ka tanka e tsosang. Palo e nepahetseng ea metsi e eketsoa ho lokisa mahloriso a ore pulp, ka kakaretso a laoloa ho 30% - 50%. Ka nako e ts'oanang, li-adjuster tse kang lime li eketsoa ho lokisa boleng ba pH ba makhasi a ore ho 10 - 11. ho theha tikoloho ea alkaline e loketseng cyanidation leaching le ho thibela ho qhibiliha ha litšila tse ling.

2. Agitation Cyanidation Leaching

• Keketso ea Reagent ea Leaching: Cyanide agents tse kang sodium cyanide (NaCN) kapa potassium cyanide (KCN) li kenngoa ho makhasi a ore a fetotsoeng. Tlas'a maemo a susumetsang ka ho feletseng, cyanide e kopana le lik'hemik'hale le khauta ho etsa metsoako ea khauta ea cyanide e qhibilihang ka metsing.

• Thepa ea Leaching: Ts'ebetso ea leaching hangata e etsoa ka litanka tse ngata tse amanang le pherekano. Litanka tsa pherekano li ka aroloa ka mefuta e meraro ho latela mekhoa e fapaneng ea ho kopanya: litanka tse hatelletsoeng tsa moea tse ferekaneng, litanka tsa pherekano ea mochini, kapa litanka tsa moferefere tse tsoakiloeng.

• Leaching Conditions: The concentration of Sodium cyanide ka makhasi a ore hangata ke 0.02% - 0.1%. Kalaka e eketsoa nakong ea ts'ebetso ho etsa makhasi a ore pH = 9 - 12. Moea o tletse ho boloka karo-karolelano e ntle ka ho fetisisa pakeng tsa motsoako oa oksijene o qhibilihisitsoeng le sodium cyanide concentration ka har'a makhasi a ore. Nako ea ho fafatsa ka kakaretso ke lihora tse 24 - 48 ho netefatsa hore khauta e qhibililoe ka botlalo.

3. Karohano e tiileng-Mokelikeli le ho Hlatsoa

• Karohano e tiileng-Mokelikeli: Ka mor'a leaching, makhasi a ore a arohanngoa le metsi a tiileng ka lisebelisoa tse kang li-thickeners le li-filters ho fumana tharollo ea moimana e nang le khauta le masala a leaching. Li-thickeners li sebelisa molao-motheo oa sedimentation ea matla a khoheli ho etsa hore likaroloana tse tiileng ka har'a makhasi a ore li theohele tlase, 'me matla a maholo ke tharollo ea moimana e nang le khauta. Lisefe li tsoela pele ho sefa bokatlase ba sekontiri ho ntlafatsa phello ea karohano ea mokelikeli o tiileng.

• Ho hlatsoa: E le ho fumana karohano e lekaneng pakeng tsa leachate ea cyanide le masala a leach, mokhoa oa ho hlatsoa oa mekhahlelo ea 3 - 5 ea ho teteaneng, ho hloekisa, kapa motsoako oa bobeli o sebelisoa ka kakaretso. Ena ke ts'ebetso ea bohlokoa bakeng sa leaching ea cyanidation. Mokhoa o atisang ho sebelisoa ke mokhoa o tsoelang pele oa ho kheloha (CCD). Li-thickeners tse sebelisoang ka mokhoa ona li ka aroloa ka mefuta e le 'ngoe le mefuta e mengata. Li-concentrator tse ngata tsa cyanidation Chaena li sebelisa 2 - 3 - layering thickeners bakeng sa karohano ea metsi a tiileng le ho hlatsoa ho tsoelang pele.

4. Khauta Recovery

• Mokhoa oa ho falla oa Zinc Powder: Zinc phofo e kenngoa ho tharollo ea moimana e nang le khauta. Zinc e sebetsana le "cyanide complex" ea khauta karabelong ea ho falla, e fokotsa khauta ho khauta ea tšepe le ho e theola. Ka mor'a ho sefshoa, seretse sa khauta se fumanoa, 'me seretse sa khauta se qhibilihisoa ka mekhoa e kang ho qhibiliha ho fumana khauta e tala.

• Mokhoa oa Adsorption oa Carbon o kentsoeng: Khabone e kentsoeng e eketsoa tharollong ea moimana e nang le khauta, 'me mochini oa khauta oa cyanide o khabisitsoe ke khabone e kentsoeng. Ka mor'a moo, khauta e fumanoa ho carbon activated ka mekhoa e kang desorption le electrowinning. Mokhoa ona o ka aroloa hape ka mokhoa oa carbon-in-pulp (CIP) le mokhoa oa carbon-in-leach (CIL).

• Mokhoa oa CIP: Taba ea pele, cyanidation leaching e etsoa, ​​​​ebe khabone e kentsoeng e eketsoa ho makhasi a ore ho khahlisa khauta. Ts'ebetsong ea CIP, leaching le adsorption ke lits'ebetso tse peli tse ikemetseng. Ts'ebetsong ea adsorption, ts'ebetso ea leaching e se e phethiloe, 'me boholo, bongata, le maemo a ts'ebetso ea litanka tsa adsorption li khethoa ke liparamente tsa adsorption.

• Mokhoa oa CIL: Khabone e kentsoeng e eketsoa ka tanka ea leaching, 'me leaching le adsorption li etsoa ka nako e le' ngoe, ke hore, leaching le adsorption li etsahala ka nako e le 'ngoe. Ts'ebetsong ea CIL, ts'ebetso ea leaching le adsorption e etsoa ka nako e le 'ngoe. Ka kakaretso, ts'ebetso ea leaching e hloka nako e telele ho feta ts'ebetso ea adsorption. Ka hona, boholo, aeration, le dosing ea tanka li khethoa ke litekanyetso tsa leaching. Kaha sekhahla sa adsorption ke ts'ebetso ea ho bokellana ha khauta e qhibilihisitsoeng ka tharollo, e le ho eketsa bongata ba khauta e qhibilihisitsoeng ka pele - karolo ea litanka tsa adsorption 'me ka nako e ts'oanang e eketsa nako ea leaching, mehato e 1 - 2 ea pre-leaching e atisa ho eketsoa pele ho leaching le adsorption.

5. Tailings Phekolo

Lithako ka mor'a Khauta Recovery hangata e na le palo e itseng ea masala a cyanide le litšila tse ling. Bakeng sa litlhoko tsa ts'ireletso ea tikoloho, mehatla e hloka ho tšoaroa hantle. Mekhoa e tloaelehileng ea ho phekola e kenyelletsa mekhoa ea lik'hemik'hale ea oxidation (joalo ka sulfur dioxide - moea), ho bola ha tlhaho, kapa mekhoa ea ho fokotsa boteng ba cyanide ho ea ka tlase ho maemo a naha le ho thibela tšilafalo ea tikoloho. Mehatla e phekotsoeng e ka lahloa ka stacking kapa mekhoa e meng e loketseng.

fihlela qeto e

Agitation cyanidation leaching ke ts'ebetso ea bohlokoa ea ho ntšoa ha khauta ho tsoa liminerale tsa khauta. Ka letoto la lits'ebetso tse joalo ka ho lokisoa ha thepa e tala, agitation leaching, karohano e tiileng-e metsi, ho khutlisa khauta, le kalafo ea mehatla, khauta e ka ntšoa ka mokhoa o atlehileng ores ea khauta. Leha ho le joalo, ka lebaka la chefo ea cyanide, ha e ntse e sebelisoa Agitation Cyanidation Leaching, tlhokomelo e tiileng e tlameha ho lefshoa tlhahiso ea polokeho le ts'ireletso ea tikoloho ho netefatsa tsoelo-pele e tsitsitseng ea indasteri ea merafo ea khauta.