Mekhoa le Mekhoa ea ho Tlosa Cyanide holim'a Sulfide Mineral Surfaces

Selelekela

Ka molemo le Ho qhibilihisa lits'ebetso tsa ores tse seng ferrous metal sulfide, Nako hangata e sebelisoa ho eketsa litekanyetso tsa ho hlaphoheloa ha tšepe. Leha ho le joalo, the cyanide ho sala holim'a li-sulfide ores ha ho na phello e mpe feela ho phallo ea ts'ebetso e latelang empa hape ho baka mathata a tebileng a tikoloho. Ka hona, nts'etsopele ea mekhoa e sebetsang hantle le e baballang tikoloho bakeng sa ho tlosa cyanide holim'a ores ea sulfide e bohlokoa haholo.

Maemo a Hona Joale le Likotsi tsa Masala a Cyanide holim'a Sulfide Mineral Surfaces

Boemo ba Hajoale

Ts'ebetsong ea setso ea flotation ea sulfide ores, cyanide e sebelisoa haholo joalo ka inhibitor. E ka thibela ka boikhethelo liminerale tse itseng tse sa batleheng ka har'a ores ea sulfide, kahoo ea finyella karohano ea liminerale tse reretsoeng ho tloha ho liminerale tsa gangue. Empa ka mor'a ho phaphamala, palo e kholo ea cyanide e tla adsorb holim'a ores ea sulfide. Ho ea ka lipatlisiso tse nepahetseng, li-concentrators tse ling, li-cyanide tse ka holim'a majoe a sulfide li tsepamisitsoe ka mor'a hore li phaphametse li ka ba holimo ho limiligrama tse makholo a 'maloa ka kilogram.

likotsi

Ho latela pono ea thekenoloji, cyanide e setseng e tla kena-kenana le mokhoa o latelang oa ho qhibiliha. Ka mohlala, nakong ea ho qhibiliha ha li-copper sulfide ores, cyanide e tla etsa li-complexes tse nang le koporo, ho fokotsa bokhoni ba ho qhibiliha ha koporo le ho eketsa tšebeliso ea matla. Ho latela pono ea tikoloho, cyanide ke ntho e chefo haholo. Ha metsi a litšila a nang le cyanide a tšeloa tikolohong ea tlhaho, a tla silafatsa libaka tsa metsi le mobu, a behe kotsing ea lintho tse phelang metsing le limela tse haufi, 'me a be a be kotsi bophelong ba batho ka ketane ea lijo.

Mekhoa ea ho Tlosa Cyanide ho Sulfide Mineral Surfaces

Mokhoa oa Oxidation

1.Chemical Oxidation Method

• Molao-motheo: Sebelisa li-oxidant tse matla ho kenya cyanide linthong tse chefo kapa tse seng chefo. Li-oxidants tse tloaelehileng li kenyelletsa hydrogen peroxide (H2O2), hypochlorite ea sodium (NaClO), joalo-joalo Ho nka hydrogen peroxide e le mohlala, karabo ea eona equation ke: (2CN + 5H2O2 = 2HCO3 + N2↑ + 4H2O).

• Tshebetso ea Ts'ebetso: Ntlha ea pele, beha makhasi a sulfide ore a nang le cyanide ka tanka ea ho arabela 'me u fetole boleng ba pH ba makhasi ho ea boemong bo loketseng (ka kakaretso, bakeng sa oxidation ea hydrogen peroxide, pH ea bohlokoa e ka ba pakeng tsa 9 - 11). Ebe, butle-butle eketsa tharollo ea hydrogen peroxide ha u ntse u hlohlelletsa ho etsa hore oxidant e kopane ka ho feletseng le ho itšoara ka makhasi. Nako ea karabelo hangata e tloha ho lihora tse 1 - 3, 'me nako e ikhethileng e ipapisitse le khatello ea cyanide ka har'a makhasi le thepa ea ore.

• le menyetla: Lebelo la karabelo le batla le potlakile, 'me phello ea ho tlosa cyanide e ntle, e ka fokotsang khatello ea cyanide ho ea boemong bo tlase haholo.

• go tlhoka mesola: Li-oxidants tse kang hydrogen peroxide li batla li le bitsa chelete e ngata, 'me li-oxidants tse feteletseng li ka ba le tšusumetso lits'ebetsong tse latelang tsa molemo kapa tsa ho qhibilihisa.

Mokhoa oa Adsorption

1.Activated Carbon Adsorption Mokhoa

• Molao-motheo: E kentswe tshebetsong k'habone E na le sebaka se seholo se ikgethang sa bokaholimo le dibopeho tse ruileng tsa masoba, tse ka monyang cyanide hodima bokaholimo ba yona ka ho monya ha yona ka mmele le dikhemikhale.

• Tshebetso ea Ts'ebetso: Eketsa E entsoe ka Carbon Kenya khabone e kentsweng mothapong wa sulfide o nang le cyanide mme o hlohlelletse hantle ho etsa hore khabone e kentsweng mothapong e kopane ka botlalo le cyanide e ka hara khabone. Nako ya ho monya hangata ke metsotso e 30 ho isa ho dihora tse 2. Kamora ho monya, arola khabone e kentsweng mothapong ka ho e sefa kapa ka mekgwa e meng.

• le menyetla: Ts'ebetso e bonolo, 'me e na le phello e ntle ea adsorption ho low-concentration cyanide. Khabone e kentsoeng e ka nchafatsoa le ho sebelisoa hape.

• go tlhoka mesola: Bakeng sa mahloriso a cyanide a phahameng, matla a adsorption a na le moeli, 'me phekolo e sa lokelang ea adsorbed activated carbon e tla baka tšilafalo ea bobeli.

2.Ion - Exchange Resin Adsorption Method

• Molao-motheo: Ion - li-resin tsa phapanyetsano li na le lihlopha tse itseng tse sebetsang tse ka fapanyetsanang le li-ion ho cyanide, kahoo li hlahisa cyanide holim'a resin.

• Tshebetso ea Ts'ebetso: Laela resin ea ion - phapanyetsano ka har'a kholomo ea phapanyetsano 'me u etse hore makhasi a sulfide ore a nang le cyanide a fete kholomong ea phapanyetsano. Laola sekhahla sa phallo ea pulp ho netefatsa hore cyanide e fapanyetsana ka botlalo le resin. Ha resin e tletse ka adsorption, sebelisa leseli le khethehileng ho hlahisa le ho nchafatsa resin.

• le menyetla: E na le khetho e phahameng ea adsorption bakeng sa cyanide mme e ka fihlela ts'ebetso e tsoelang pele.

• go tlhoka mesola: Litšenyehelo tsa resin li holimo, mokhoa oa ho hlakisa o batla o rarahane, 'me cyanide - e nang le mokelikeli o litšila oa elution e ka hlahisoa.

Mekhoa e meng

1.Acid - Base Neutralization Method

• Molao-motheo: Tlas'a maemo a itseng, cyanide e tla kena ho hydrolysis libakeng tse asiti kapa alkaline ho hlahisa lintho tse chefo kapa tse seng chefo. Ka mohlala, boemong ba acidic, cyanide e tla itšoara ka li-ion tsa hydrogen ho etsa hydrocyanic acid (HCN), e ka tlosoang ka ho fetoha; boemong ba alkaline, cyanide hydrolyzes ho etsa cyanate le lintho tse ling.

• Tshebetso ea Ts'ebetso: Haeba acidic hydrolysis e amoheloa, butle-butle eketsa litharollo tse nang le asiti tse kang dilute sulfuric acid ho makhasi a sulfide ore a nang le cyanide, fetola boleng ba pH ho 2 - 4. 'me joale aerate ho volatilize acid e hlahisitsoeng ea hydrocyanic. Haeba alkaline hydrolysis e amoheloa, eketsa lintho tsa alkaline tse kang sodium hydroxide, fetola boleng ba pH ho 10 - 12. 'me u arabe ka nako e itseng (ka kakaretso lihora tse 2 - 4).

• le menyetla: Theko e batla e le tlaase, 'me ts'ebetso e batla e le bonolo.

• go tlhoka mesola: Asiti ea hydrocyanic e hlahisoang nakong ea acidic hydrolysis e chefo haholo 'me e hloka mehato e tiileng ea tšireletso; lebelo la karabelo ea alkaline hydrolysis le lieha, 'me ho kanna ha ba le masalla a manyane a cyanide kamora kalafo.

Moralo oa Phallo ea Ts'ebetso bakeng sa ho Tlosa Cyanide holim'a Sulfide Mineral Surfaces

Mothati oa ho Pheta Pele

1. Phetoho ea Pulp: Fetola boemo ba makhasi a sulfide ore kamora ho phaphamala. Ka kakaretso, mahloriso a pulp a laoloa pakeng tsa 20% - 40% bakeng sa phekolo e latelang. Ka nako e ts'oanang, lemoha mahloriso a pele a cyanide ka har'a makhasi ho fana ka motheo oa ho khetholla mekhoa e latelang ea ts'ebetso.

2. Ho Tlosa Tšila: Tlosa litšila tse kholo tsa likaroloana le lisebelisoa tse ling tse emisitsoeng ka har'a makhasi ka ho sefa, sedimentation, joalo-joalo, ho li thibela ho kena-kenana le mekhoa ea phekolo e latelang.

Mothati oa ho Tlosa

1. Khetho ea Mokhoa: Khetha mokhoa o nepahetseng oa ho tlosa ho latela lintlha tse joalo ka bongata ba cyanide ka har'a makhasi, thepa ea ore, litšenyehelo tsa kalafo le litlhoko tsa ts'ireletso ea tikoloho. Ka mohlala, bakeng sa high-concentration cyanide le linyeoe moo litšenyehelo li sa tšoenyeheng, lik'hemik'hale Mokhoa oa oxidation e ka fuoa pele; bakeng sa maemo a tlase a cyanide le maemo a tlhokomelo ea tikoloho, mokhoa oa biological oxidation kapa mokhoa oa adsorption o ka ba o loketseng haholoanyane.

2. Ts'ebetso ea Paramente ea Tsamaiso: Ho nka hydrogen peroxide oxidation ka Oxidation ea lik'hemik'hale mokhoa e le mohlala, ka tieo laola palo ea peroxide hydrogen phaella ka ho re (ka kakaretso balwa ho ya ka cyanide mahloriso le itsoara joang ka equation), karabelo mocheso (ka kakaretso 20 - 30 ℃), pH boleng (9 - 11), le lebelo susumetsang maikutlo (100 - 300 liphetohelo ka motsotso) le mekhahlelo e meng ho etsa bonnete ba hore ba itšoara hantle.

Post - kalafo Stage

1. Tiileng - Karohano ea Mokelikeli: Arola makhasi ka mor'a hore cyanide e tlosoe ka ho hloekisa, centrifugation, joalo-joalo ho fumana sulfide ore e hloekisitsoeng le metsi a litšila a nang le cyanide e nyenyane.

2. Phekolo ea metsi a litšila: Ho tsoela pele ho hloekisa metsi a litšila a arohaneng ho finyella litekanyetso tsa naha tsa ho qhala. Oxidation ea bobeli, adsorption, le mekhoa e meng e ka sebelisoa ho tlosa cyanide ka metsing a litšila ho netefatsa ho tsoa ho sireletsehileng.

fihlela qeto e

Ho na le mekhoa e fapaneng ea ho tlosa cyanide holim'a ores ea sulfide, 'me mokhoa o mong le o mong o na le melemo le mefokolo ea ona. Lits'ebetsong tse sebetsang, hoa hlokahala ho nahanisisa ka botlalo lintlha tse kang thepa ea ore, mahloriso a cyanide, litšenyehelo tsa kalafo le litlhoko tsa ts'ireletso ea tikoloho ho khetha mekhoa e nepahetseng le phallo ea ts'ebetso. Ka litlhoko tse ntseng li eketseha tsa ts'ireletso ea tikoloho le tsoelo-pele e tsoelang pele ea thekenoloji, nts'etsopele ea theknoloji e sebetsang hantle, e se nang tikoloho, le ea theko e tlaase bakeng sa ho tlosa cyanide holim'a majoe a sulfide e tla ba tataiso ea bohlokoa ea lipatlisiso nakong e tlang. Ka ts'ebetso e tsoelang pele ea ts'ebetso, ho lebeletsoe ho fumana zero - ho ntšoa ha cyanide ts'ebetsong ea ho rua molemo le ho qhibilihisa ores ea sulfide le ho khothaletsa nts'etsopele ea moshoelella ea indasteri ea tšepe e seng ferrous.