Patlisiso ka Mokhoa oa Thibelo oa Sodium Cyanide ho Phallo ea Karohano ea Lead-Zinc

1. Selelekela

Lefapheng la ts'ebetso ea liminerale, karohano ea liminerale tsa lead le zinki e na le bohlokoa bo boholo. Froth flotation ke mokhoa o atisang ho sebelisoa bakeng sa karohano ena, 'me tšebeliso ea li-depressants tse loketseng ke ea bohlokoa bakeng sa ho finyella karohano e atlehileng. Sodium cyanide haesale e sebelisoa haholo joalo ka ntho e sithabetsang ho flotation ea karohano ea lead-zinki. Ho utloisisa mokhoa oa eona oa ho thibela ho bohlokoa bakeng sa ho ntlafatsa ts'ebetso ea ho phaphamala, ho ntlafatsa katleho ea karohano, le ho fokotsa tšebeliso ea reagent. Sengoliloeng sena se ikemiselitse ho etsa thuto e hlophisitsoeng mabapi le mokhoa oa ho thibela ho Sodium cyanide ka flotation ea karohano ea lead-zinki.

2. Karolo ea Li-Depressants ho Flotation

Ts'ebetsong ea foam flotation, li-depressants ke li-reagents tse ka thibelang kapa tsa fokotsa ho ata kapa ho fokotsa liketso tsa babokelli holim'a liminerale tse sa lebelloang le ho etsa filimi ea hydrophilic holim'a libaka tsena tsa liminerale. Phallong ea karohano ea lead-zinc, sepheo sa mantlha ke ho arola liminerale tse etellang pele (tse kang galena) ho liminerale tsa zinki (joalo ka sphalerite). Ntle le li-depressants tse sebetsang hantle, ho thata ho fihlela karohano ea bohloeki bo phahameng hobane liminerale tsa lead le zinki li ka bonts'a boitšoaro bo ts'oanang ba ho phaphamala ka pel'a babokelli.

3. Hydrolysis ea Sodium Cyanide le Kamano ea eona le pH

Sodium cyanide hydrolyzes ka metsing, 'me lihlahisoa tsa hydrolysis li amana haufi-ufi le boleng ba pH ba makhasi. Boithuto ba liteko bo bonts'itse hore ha pulp pH e le 7.0. hoo e ka bang kaofela ha Sodium cyanide hydrolyzes ho etsa khase ea hydrogen cyanide. Ha makhasi a pH e le 12.0. sodium cyanide hoo e batlang e arohana ka ho feletseng ho li-ion tsa cyanide. Ha makhasi a pH a le 9.3. karo-karolelano ea hydrogen cyanide ho cyanide ion ke 1:1. Boitšoaro bona ba hydrolysis bo itšetlehileng ka pH ea sodium cyanide bo ama haholo phello ea eona ea ho thibela liminerale.

4. Mekhoa ea Thibelo ea Sodium Cyanide ka Sphalerite

4.1 Ho felisoa ha Filimi ea Copper Sulfide e kentsoeng ka Sphalerite Surface

Ha sphalerite e sebelisoa ke sulfate ea koporo, filimi ea koporo ea sulfide e etsoa holim'a eona, e leng ho eketsang ho phalla ha sphalerite. Sodium cyanide e ka qhaqha filimi ena ea koporo ea sulfide holim'a sphalerite. Hang ha filimi ea koporo ea sulfide e qhibiliha, sebaka sa pele sa sphalerite se nang le bothata ba ho phaphamala sea pepesoa. Ka lebaka leo, ho ba thata le ho feta hore 'mokelli a khabise holim'a sphalerite, a thibela ka katleho ho phalla ha sphalerite.

4.2 Ho thehoa ha filimi ea Hydrophilic holim'a Sphalerite Surface

Li-ion tsa cyanide tse ka sodium cyanide li ka fapanyetsana-adsorb le anions tse kang ion sulfate le tse tsoang ho babokelli ba kang xanthates holim'a sphalerite. Ka mohlala, ha e sebetsana le li-ion tsa zinki holim'a sphalerite, e ka etsa filimi ea hydrophilic zinc cyanide. Filimi ena ea hydrophilic e thibela ho sebelisana pakeng tsa sebaka sa sphalerite le moqokeleli, ho fokotsa papatso ea mokelli holim'a sphalerite, kahoo ho finyella sepheo sa ho thibela ho phalla ha sphalerite.

4.3 Ho qhalana - Ho rarahana ha Metal Xanthates

Sodium cyanide e na le bokhoni bo matla ba ho qhibiliha le ho rarahana ka li-xanthate tsa tšepe, tse atisang ho sebelisoa likoleke tsa sulfide mineral flotation. Bakeng sa liminerale tse amanang le zinki, li-xanthate-zinc complexes tse entsoeng holim'a sphalerite li ka senyeha ke sodium cyanide. Ho rarahana ha sodium cyanide ka li-ion tsa tšepe ho xanthates ho fokolisa maqhama pakeng tsa moqokelli le bokaholimo ba liminerale, ho etsa hore li-xanthate li senyehe ho tloha holim'a sphalerite. Ka lebaka leo, ho phaphamala ha sphalerite ho thibetsoe.

5. Khetho ea Sodium Cyanide ho Liminerale tse sa tšoaneng

Ho ipapisitsoe le bokhoni ba sodium cyanide ho theha li-complexes tse tsitsitseng tsa cyanide tse nang le litšepe tse fapaneng, litšepe tse tloaelehileng le liminerale tsa tsona li ka aroloa ka lihlopha tse tharo:

1. Liminerale tsa loto, thallium, bismuth, antimony, arsenic, tin, rhodium: Liminerale tsena ha li khone ho etsa li-complexes tse tsitsitseng tsa cyanide tse nang le sodium cyanide. Kahoo, sodium cyanide ha e na phello e thibelang liminerale tsena. Phallong ea karohano ea lead-zinc, thepa ena e netefatsa hore liminerale tsa lead ha li thibeloe ke sodium cyanide mme e ka phaphamala hantle.

2. Liminerale tsa platinum, MOHAU, silevera, cadmium, koporo: Liminerale tsena li ka etsa li-complexes tse tsitsitseng tsa cyanide tse nang le sodium cyanide, empa ho hlokahala tekanyo e batlang e phahame ea sodium cyanide ho finyella thibelo. Boemong ba karohano ea lead-zinc, haeba ho na le litšila tse nang le koporo ka har'a ore, ho ka hlokahala hore ho be le sodium cyanide e khōloanyane ho thibela liminerale tse amanang le koporo le ho thibela ho kena-kenana le ho arohana ha loto le zinki.

3. Liminerale tsa zinki, nickel, khauta, tšepe: Liminerale tsena li ka etsa li-complexes tse tsitsitseng haholo tsa cyanide tse nang le sodium cyanide. Sodium cyanide e na le phello e matla ka ho fetisisa ea ho thibela liminerale tsena, 'me palo e nyenyane ea sodium cyanide e ka lebisa ho thibela ho hoholo. Ka flotation ea karohano ea lead-zinki, tšobotsi ena e etsa hore ho be le thibelo e sebetsang ea liminerale tse nang le tšepe (tse kang pyrite) le liminerale tse nang le zinki, tse molemo bakeng sa ho phaphamala ho khethehileng ha liminerale tsa loto.

6. Tšebeliso e Sebetsang le ho Nahana

Ts'ebetsong ea 'nete ea karohano ea lead-zinki, ts'ebeliso ea sodium cyanide e hloka ntlafatso e hlokolosi. Tekanyo ea sodium cyanide e lokela ho fetoloa ho latela sebopeho se ikhethileng sa ore, likahare tsa liminerale tsa lead le zinki, le boteng ba litšila tse ling. Haeba tekanyo e le tlase haholo, thibelo ea liminerale tsa zinki le liminerale tse amanang le gangue e ka 'na ea se ke ea lekana, e leng se etsang hore ho be le loto e hloekileng haholo. Ka lehlakoreng le leng, haeba litekanyetso li phahame haholo, ha li eketse litšenyehelo tsa reagent feela empa hape li ka baka mathata a tikoloho ka lebaka la chefo ea cyanide.

Ho feta moo, boleng ba pH ba makhasi, bo amang hydrolysis ea sodium cyanide, bo tlameha ho laoloa ka thata. Mefuta e loketseng ea pH bakeng sa phallo ea karohano ea lead-zinki e sebelisa sodium cyanide hangata e ka ba 9 - 11. Ka har'a mofuta ona oa pH, sodium cyanide e ka ba teng ka mokhoa o loketseng ho thibela liminerale tsa zinki ha e ntse e fokotsa tahlehelo ea liminerale tsa loto ka lebaka la ho thibela ho feta tekano.

7. Qetello

Sodium cyanide e bapala karolo ea bohlokoa ho phaphameng karohano ea lead-zinki ka mekhoa e mengata ea thibelo. Ka ho qhaqha filimi e entsoeng ka koporo ea sulfide holim'a sphalerite, ho etsa filimi ea hydrophilic holim'a sphalerite, le li-xanthate tsa tšepe tse qhibilihisang, ka katleho e thibela ho phalla ha liminerale tsa zinki. Khetho ea eona ho liminerale tse fapaneng e fana ka motheo oa ho arohana ha liminerale tsa loto le zinki. Leha ho le joalo, lits'ebetsong tse sebetsang, lintlha tse kang taolo ea litekanyetso le tokiso ea pH ea pulp li hloka ho nahanoa ka hloko ho fihlela karohano e sebetsang hantle, ea moruo le e se nang tikoloho ea lead-zinc. Lipatlisiso tse ling sebakeng sena li ka tsepamisa maikutlo ho nts'etsopele mekhoa e meng e sebetsang hantle le e se nang tikoloho ho feta sodium cyanide ha ho ntse ho bolokoa kapa ho ntlafatsa katleho ea karohano ea liminerale tsa lead-zinki.