Kameho ea Leaching e Phahameng ea Mocheso ho Tšebeliso ea Sodium Cyanide

Selelekela

ka Khauta ea Khauta tshebetso, Sodium cyanide e sebelisoa haholo joalo ka moemeli oa leaching ka lebaka la bokhoni ba eona ba ho etsa li-complexes tse tsitsitseng ka khauta. Leha ho le joalo, tshebediso ya sodium cyanide ke ntlha ea bohlokoa e susumetsang katleho ea moruo le phello ea tikoloho ea mesebetsi ea merafo ea khauta. Mocheso o phahameng oa mocheso ke e 'ngoe ea mekhoa e sebelisoang ho ntlafatsa ts'ebetso ea khauta e tsoang ho ore. Sengoliloeng sena delves ka tšusumetso ea phahameng - mocheso leaching ka tshebediso ya Sodium cyanide.

Karolo ea Sodium Cyanide ho Leaching ea Khauta

Sodium cyanide e kopana le kgauta ha oksijene e le teng ho etsa metsoako e qhibidihang e dumellang ho ntsha kgauta ho tswa hara borale. Lipalo tsa electrochemical li bonts'a hore ka theory, ligrama tse 0.92 tsa sodium cyanide lia hlokahala ho qhaqha gram e le 'ngoe ea khauta. Leha ho le joalo, tlhahisong ea 'nete ea indasteri, tšebeliso ea sodium cyanide e phahame haholo ho feta boleng bona ba theory, hangata makhetlo a 1 - 50 ho feta. Phapang ena e kholo e bakoa ke lintlha tse fapaneng tse teng maemong a 'nete a merafo ea lefats'e, joalo ka karabelo le liminerale tse ling ts'ebetsong ea ore le lik'hemik'hale tse etsahalang nakong ea ts'ebetso ea leaching.

Phahameng - Mocheso Leaching Process

Mocheso o phahameng oa mocheso o etsoa ka mocheso o phahameng, hangata ka holim'a mocheso o tloaelehileng oa tikoloho. Sepheo se seholo ke ho eketsa ts'ebetso ea li-ion tsamaisong ea tharollo ea ore-leaching. Ka ho etsa joalo, e potlakisa karabelo pakeng tsa leaching agent, sodium cyanide, le khauta ka har'a ore. Mohlala, tabeng ea lirafshoa tse ling tsa khauta, mocheso o phahameng oa mocheso o ka senya likarolo tse rarahaneng tsa liminerale tse koahelang khauta, ho etsa hore khauta e fumanehe habonolo ho li-ion tsa cyanide bakeng sa ho ntšoa.

Tšusumetso ea Mocheso o Holimo - Leaching ea Mocheso ho Tšebeliso ea Sodium Cyanide

1. Keketseho ea Rection Rate

Lithempereichara tse phahameng, matla a kinetic a limolek'hule tsa reactant a eketseha. Sena se fella ka ho thulana khafetsa le ho matla pakeng tsa limolek'hule tsa sodium cyanide, limolek'hule tsa oksijene le likaroloana tsa khauta ka har'a ore. Ka lebaka leo, lebelo leo khauta e qhibilihang ka har'a motsoako oa sodium cyanide lea eketseha. Ha sekhahla sa karabelo se potlakile, khauta e ngata e ka qhibiliha ka nako ea yuniti. Haeba sepheo e le ho ntša chelete e itseng ea khauta, mocheso o phahameng oa mocheso o ka 'na oa hloka nako e khutšoanyane ea leaching. Ka khopolo, sena se ka fokotsa tšebeliso e akaretsang ea sodium cyanide ho tloha ha ts'ebetso ea leaching e fela ka potlako, ho fokotsa nako ea nako ea sodium cyanide e pepesehela lintho tse bakang tšebeliso ea eona.

2. Cyanide Hydrolysis

Cyanide e kena tšebetsong ea lik'hemik'hale e bitsoang hydrolysis ka tharollo, 'me boholo ba hydrolysis ena bo susumetsoa ke mocheso. Ha mocheso o ntse o phahama, hydrolysis ea cyanide e ba e hlakileng haholoanyane. Ka 100 ° C, halofo ea li-ion tsa cyanide lia lahleha, 'me ka 130 ° C, 85% ea tsona e lahlehile. Hydrolysis ena e hlahisa hydrocyanic acid, e sa lebiseng feela tahlehelong ea sodium cyanide empa hape e beha kotsi e tebileng ea tikoloho le polokeho hobane hydrocyanic acid ke khase e chefo haholo. Ka mocheso o phahameng oa mocheso, haeba mocheso o sa laoloe hantle, ho eketseha ha hydrolysis ea sodium cyanide ho ka eketsa tšebeliso ea eona haholo.

3. Karabelo le Associated Minerals

Metsoako e mengata ea khauta e na le liminerale tse ling, tse kang pyrite, pyrrhotite le copper sulfide. Liminerale tsena tse amanang le tsona li ka sebetsana le sodium cyanide. Lithempereichara tse holimo, litekanyetso tsa karabelo lipakeng tsa liminerale tsena tse se nang khauta le sodium cyanide li ka eketseha. Sena se bolela hore sodium cyanide e ngata e tla sebelisoa karabelong ea liminerale tsena, e siea e fokola bakeng sa ho sebetsana le khauta. Ho feta moo, tse ling tsa karabelo ena li ka hlahisa - lihlahisoa tse ka sitisang ts'ebetso ea ho tsoa ha khauta. Mohlala, sebabole - e nang le metsoako e entsoeng e ka koahela bokaholimo ba likaroloana tsa khauta, ea thibela li-ion tsa cyanide ho fihla le ho sebetsana le khauta.

4. Ho qhibiliha ha Oksijene

Oksijene ke karolo ea bohlokoa molemong oa ho tsoa ha khauta - cyanide leaching joalo ka ha e sebetsa joalo ka oxidant. Leha ho le joalo, ho qhibiliha ha oksijene metsing ho fokotseha ha mocheso o ntse o eketseha. Ka 100 ° C, ha ho na oksijene e qhibilihisitsoeng metsing. Boemong bo phahameng ba mocheso oa mocheso, haeba mocheso o atamela sebakeng se belang sa metsi, ho haella ha oksijene e lekaneng e qhibilihisitsoeng ho ka fokotsa oxidation ea khauta. Ho thusa ho fokotsa ho qhibiliha ha oksijene, ho ka hlokahala mehato e meng e kang ho eketsa khatello e sa fellang ea oksijene kapa ho sebelisa li-oxidants tse ling. Empa haeba phepelo ea oksijene e lula e sa lekana, karabelo ea leaching ea khauta e tla fokotseha, 'me sodium cyanide e ngata e ka jeoa molemong oa ho khanna karabelo pele.

Case Studies

Moepong o itseng oa khauta, mokhoa oa setso oa phaposi - mocheso oa cyanide o ne o ja 2.5 kg ea sodium cyanide ka tone ea ore. Ha ts'ebetso ea leaching e phahameng ea mocheso e ne e hlahisoa, qalong, ka lebaka la karabelo e potlakileng ea khauta - nako ea leaching e ile ea fokotsoa ho tloha ho lihora tse 48 ho isa ho lihora tse 24. Leha ho le joalo, ka lebaka la taolo e fosahetseng ea mocheso, ka mocheso oa leaching o fihlang ho 80 ° C, hydrolysis ea sodium cyanide e ile ea eketseha haholo. Ka lebaka leo, tšebeliso ea sodium cyanide e hlile e nyolohetse ho 3.0 kg ka tone ea ore. Kamora ho ntlafatsa ts'ebetso ea mocheso o phahameng oa mocheso, ho kenyeletsoa ho laola hantle mocheso o ka bang 60 ° C le ho eketsa li-inhibitors ho fokotsa cyanide hydrolysis, Tšebeliso ea sodium cyanide e theohetse ho 2.0 kg ka tone e le 'ngoe ea ore ha e ntse e boloka tekanyo e phahameng ea ho tsoa ha khauta.

fihlela qeto e

Leaching ea mocheso o phahameng o na le tšusumetso e rarahaneng ts'ebelisong ea sodium cyanide ts'ebetsong ea ho ntšoa ha khauta. Ka lehlakoreng le leng, e ka potlakisa karabelo ea khauta, e ka fokotsang tšebeliso ea sodium cyanide ha ts'ebetso e laoloa hantle. Ka lehlakoreng le leng, mocheso o phahameng o ka baka ho eketseha ha cyanide hydrolysis, liketso tse matla haholoanyane le liminerale tse amanang le tsona, le ho fokotsa ho qhibiliha ha oksijene, e leng ntho e ka lebisang ho sebelisoa ha sodium cyanide e phahameng. Ka hona, ha u sebelisa leaching e phahameng ea mocheso, ho bohlokoa ho ntlafatsa mekhoa ea ts'ebetso, joalo ka taolo e nepahetseng ea mocheso, phepelo e nepahetseng ea oksijene, le ts'ebeliso ea li-additives ho thibela cyanide hydrolysis le karabelo e sa batleheng ka liminerale tse amanang. Mokhoa ona o ka thusa ho leka-lekanya lipakeng tsa ho ntlafatsa ts'ebetso ea khauta le ho fokotsa tšebeliso ea sodium cyanide, ho ntlafatsa ts'ebetso ea moruo le ea tikoloho mesebetsing ea merafo ea khauta.