Iqhaza Le-Sodium Sulfide Ekucubunguleni Amaminerali

Isingeniso

Emkhakheni oyinkimbinkimbi nobalulekile wokucubungula amaminerali , ama-reagent ahlukahlukene amakhemikhali adlala indima ebalulekile ekwenzeni ngcono ukuhlukaniswa nokukhishwa kwamaminerali ayigugu. Phakathi kwalawa, i-sodium sulfide (Na₂S) ivelele njengekhemikhali eguquguqukayo futhi esetshenziswa kabanzi. Inemisebenzi eminingi ezinhlotsheni ezahlukene zokusebenza kokucubungula amaminerali, ikakhulukazi ezinqubweni zokuntanta , eziyisisekelo sokubuyiselwa kwamaminerali ngempumelelo kusuka kuma-ore.

Izakhiwo Zamakhemikhali ze-Sodium Sulfidi

I-sodium sulfide ingusawoti otholakala ku-hydrogen sulfide, i-dibasic acid ebuthakathaka. Ezixazululweni ezinamanzi ekamelweni lokushisa kanye nomfutho womoya owodwa, phakathi kwezinhlobo ezingaphezu kwezingu-30 zamangqamuzana ne-ionic sulphur, ziyisithupha kuphela ezizinzile ngokwe-thermodynamically: HSO₄⁻, SO₄²⁻, H₂S, HS⁻, ne-S²⁻. I-pH yohlelo lwe-aqueous iwukuguquguquka okubalulekile kokulawula ekufakweni kwe-hydrogen sulfide. Ngaphansi kwe-pH 6. I-"molecular hydrogen sulfide" iwuhlobo lwesulfure encishisiwe evelele. Ku-pH 7. izinhlobo zesibabule esincishisiwe esixazululweni zihlukaniswa ngokulinganayo phakathi kwe-"dissolved hydrogen sulfide" kanye nezinhlobo ze-bisulfide (HS⁻), kanti i-HS⁻ iwuhlobo oluyinhloko ebangeni le-pH lika-8 - 11.

Imisebenzi ye-Sodium sulfide ekucubunguleni amaminerali

Inhibitor ye-Sulfide Minerals

I-Sodium sulfide iyisithibi esisebenzayo samaminerali amaningi e-sulfide uma isetshenziswa ngobuningi obukhulu. Ukuhleleka komphumela wayo wokuvimbela amaminerali e-sulfide ngokuvamile kwehla kanje: i-galena, i-sphalerite, i-chalcopyrite, i-bornite, i-covellite, i-pyrite, kanye ne-chalcocite. Okuphawulekayo ukuthi, ngenxa yokuntanta kwemvelo okuhle kakhulu kwe-molybdenite, i-sodium sulfide ayikwazi ukuyivimba. Lesi sici sisetshenziswa ekuntanteni kwe-molybdenite, lapho i-Na₂S ingasetshenziswa ukucindezela ukuntanteni kwamanye amaminerali e-sulfide, okuvumela ukuhlukaniswa okukhethiwe kwe-molybdenite.

I-Sulfidizing Agent ye-Non - Ferrous Metal Oxide Ores

I-non-ferrous metal oxide ores ayikwazi ukuthunjwa ngokuqondile ngabaqoqi be-xanthate. Kodwa-ke, lapho i-sodium sulfide yengezwa ku-pulp ye-ore ngaphambi kwe-xanthate flotation, iphendulana nengaphezulu lamaminerali e-non-ferrous metal oxide. Lokhu kusabela kubangela ukwakheka kwefilimu elincanyana lamaminerali e-sulfide phezu kwamaminerali e-oxide. Ngokwesibonelo, lapho insimbi eholayo emhlophe ihlangana ne-sodium sulfide, umbala wayo ongaphezulu uyashintsha usuke komhlophe ube mnyama; futhi lapho i-malachite isabela ne-sodium sulfide, umbala wayo ongaphezulu uyashintsha usuka koluhlaza uye kumnyama omnyama. Lezi zinguquko zombala zibonisa ukwakheka okuphumelelayo kwefilimu ye-sulfide ehlukile kumaminerali okuqala. Ngemuva kwe-sulfidization, i-xanthate ingabamba ngempumelelo la maminerali, ngaleyo ndlela ithuthukise ukubuyiswa kwe-flotation ye-non-ferrous metal oxide ores.

I-Desorbing Agent ye-Sulfide Mineral Mixed Concentrates

Uma kusetshenziswa inani elikhulu le-sodium sulfide, lingancisha abaqoqi bohlobo lwe-xanthate abakhangiswe ebusweni bamaminerali. Ekuhlukaniseni umthofu - i-zinc exutshwe okugxilwe noma ithusi - i-lead exutshwe ukugxila, i-ore pulp ingaqale igxilwe. Khona-ke, inani elikhulu le-sodium sulfide liyengezwa ukuze kukhishwe abaqoqi endaweni yamaminerali. Ngemuva kwalokho, i-pulp iyagezwa, futhi amanzi ahlanzekile engeziwe ukuze aphinde alungise i-pulp ukuze i-flotation yokuhlukana elandelayo. Le nqubo isiza ukuqeda ukugxambukela kwabaqoqi bokuqala futhi ivumela ukuhlukaniswa okuphumelelayo kwamaminerali ahlukahlukene ekugxilweni okuxubile.

Ukuqeda Ama-Ions Ayingozi Ku-Ore Pulp

I-sodium sulfide ingasabela ngama-ion amaningi ensimbi ukuze yenze i-insoluble sulfide precipitate. Ku-pulp ye-ore, kuvame ukuba nama-ion ensimbi angaba nomthelela omubi ekuntanteni, njengama-ion athile ensimbi esindayo. Ngokungeza i-sodium sulfide, la ma-ion ensimbi ayingozi angasuswa ku-ore pulp ngendlela ye-sulfide precipitates, ngaleyo ndlela yakhe indawo yamakhemikhali ekahle yokuntanta kanye nokwenza ngcono ukusebenza kahle kwe-flotation jikelele.

Izinto Ezithinta Ukusetshenziswa Kwe-Sodium Sulfide Ekucubunguleni Amaminerali

1. I-Ore Mineralogy : Ukuhlukahluka kwe-ore mineralogy kungaba nomthelela omkhulu. Isibonelo, ekubunjweni kwe-oxide ore sulfidization, ukuba khona kwamaminerali ahlukene njenge-galena, i-sphalerite, ne-cerussite ku-ore kungenza inqubo yokusabela ibe nzima. Ngokufanayo, ukuba khona kwamaminerali ahlukahlukene e-oxide njenge-malachite, i-azurite, i-atacamite, ne-chrysocolla ndawonye nakho kuthinta umphumela we-sulfidization.

2. Amaminerali Asetshenziswayo e-Sodium Sulfide : Amaminerali afana ne-pyrite, i-marcasite, i-talc, i-cerussite, ubumba, ama-slimes, usawoti womhlaba we-alkaline, i-gypsum, nama-chloride angadla i-sodium sulfide. Lokhu kusetshenziswa kungaholela ekungabini nenani elanele le-sodium sulfide etholakalayo ukuze kutholakale ukusabela okufiselekayo enkambisweni yokuntanta, ngaleyo ndlela kuncishiswe ukusebenza kwayo.

3. Inani le-pH : Uma kunezilinganiso eziphezulu ze-sodium sulfide, i-pH ye-pulp ye-ore ingaba ngokweqile. Lesi simo se-pH esibi kakhulu singase singagcini nje ngokuthinta ukusabela kwamakhemikhali kwe-sodium sulfide ngamaminerali kodwa futhi sithonye ukusebenza kwamanye ama-reagent ohlelweni lokuntanta, ekugcineni kuthinte ukuhlukaniswa nokubuyiselwa kwamaminerali.

4. Indawo kanye nenani lezigaba zokwengeza i-Sodium Sulfide : Iphuzu kanye nenani lezikhathi i-sodium sulfide engezwa ngazo ngesikhathi senqubo yokuntanta nazo zibalulekile. Izindawo zokwengeza ezingalungile noma inani elingalungile lezigaba zokwengeza kungabangela ukusatshalaliswa okungalingani kwe-sodium sulfide ku-ore pulp noma ukusabela okungafanele, kokubili okunganciphisa ukusebenza kahle kwemisebenzi yayo.

5. Ukwakheka Kwamanzi : Ukwakheka kwamanzi asetshenziswa enkambisweni yokuntanta, ikakhulukazi okuqukethwe yi-calcium, ama-ion e-magnesium, kanye nokuqina kwamanzi, kungasebenzisana ne-sodium sulfide kanye namaminerali. Lokhu kusebenzisana kungakhuthaza noma kuvimbele ukusabela kwe-sodium sulfide, ngaleyo ndlela kuthinte indima yayo ekucutshungulweni kwamaminerali.

Isiphetho

I-Sodium sulfide idlala indima enezici eziningi futhi ebalulekile ekucutshungulweni kwamaminerali, ikakhulukazi ekuntanteni. Imisebenzi yayo njengesithiyo, i-sulfidizing agent , i-desorbing agent, kanye nekhono layo lokususa ama-ion ayingozi kunegalelo elikhulu ekuhlukaniseni nasekubuyiselweni kwamaminerali abalulekile ezinhlotsheni ezahlukene zama-ore. Kodwa-ke, ukuze kusetshenziswe ngokugcwele amandla e-sodium sulfide, kubalulekile ukucabangela ngokucophelela nokulawula izici ezahlukahlukene ezingathinta ukusebenza kwayo endaweni eyinkimbinkimbi yokucubungula amaminerali. Ngokwenza kanjalo, imboni yokucubungula amaminerali ingafinyelela amazinga aphezulu okubuyisa izinsiza, izindleko zokukhiqiza eziphansi, kanye nentuthuko eqhubekayo.