Chromite ke thepa ea bohlokoa bakeng sa ho qhibilihisa ferroalloys, tšepe e sa hloekang le li-alloys tsa bohlokoa.Indasteri ea metallurgic e sebelisa hoo e ka bang 60% ea chromium, e sebelisoang haholo-holo ho hlahisa tšepe ea alloy, haholo-holo tšepe e sa hloekang.Ka nako e ts'oanang, chromite e boetse e sebelisoa haholo indastering ea refractory, indasteri ea lik'hemik'hale le indasteri ea leseli.
Thepa ea ore
Ho na le mefuta e fetang mashome a mahlano ea liminerale tse nang le chromium tse fumanehang tlhahong, empa liminerale tse nang le chromium feela tse nang le boleng ba indasteri ke chromite, e leng spinel (MgO, Al2O3), magnesia chromite (MgO, Cr2O3), le magnetite.(FeO, Fe2O3) le litharollo tse ling tse tiileng.Ka khopolo, mokhoa oa lik'hemik'hale oa chromite ke FeO, Cr2O3, e nang le 68% Cr2O3, 32% FeO, magnetic magnetic, density 4.1 ~ 4.7g / cm3, Mohs hardness 5.5 ~ 6.5, 'me ponahalo ea bokaholimo e tloha ho e ntšo ho ea ho sootho e lefifi.Liminerale tsa Gangue haholo-holo li kenyelletsa olivine, serpentine le pyroxene, ka linako tse ling li tsamaea le palo e nyane ea vanadium, nickel, cobalt le likarolo tsa sehlopha sa molybdenum.
Theknoloji ea ho sebetsa
Lisebelisoa tsa chromite tsa China li batla li futsanehile, haholo-holo li tsepamisitsoe ho Tibet, Xinjiang, Inner Mongolia, Gansu le liprofinse tse ling.Lisebelisoa tsa chromite tsa kantle ho naha li ajoa haholo Afrika Boroa, Russia, Brazil, United States le linaheng tse ling.Chromite e na le litšoaneleho tsa sekhahla se phahameng, magnetism e mahareng le likaroloana tsa kristale tse mahoashe.Ka kakaretso, e hlophisoa ka ho hlatsoa ore, karohano e fokolang ea makenete, karohano e matla ea matla a mahareng, karohano ea matla a khoheli, ho phaphamala le lits'ebetso tse ling.
Mokhoa oa ho hlatsoa
E loketse bakeng sa ore ea chromite e mahoashe e nang le boemo bo phahameng ba ore e tala 'me haholo-holo seretse se setle se kang letsopa joaloka litšila.Lihlahisoa tse tšoanelehang tsa coarse concentrate li ka khethoa ka ho hlatsoa habonolo.
Karohano ea makenete
Chromite e na le matla a khoheli a mahareng mme e ka aroloa ka karohano e omileng kapa e metsi e matla ea makenete.Magnetite e amanang le eona e qala ho aroloa ke matla a khoheli a fokolang, 'me a arohanngoa ka matla ke CXJ kapa CFLJ, poleiti ea makenete ea separator, lesale le otlolohileng le lengata le lengata le arohaneng, joalo-joalo Thepa e etsa beneficiation e omileng le e metsi,' me e ka khetha lihlahisoa tse tšoanelehang tsa concentrate.Mokhoa oa ho arohana ha makenete o na le melemo ea matla a maholo a ho sebetsa le matšoao a tsitsitseng.
Sebaka sa kopo ea chromite sa Afrika Boroa
Ho hlopha mecha ea litaba e matla
Matla a itseng a khoheli a chromite ke 4.1 ~ 4.7g / cm3, 'me matla a khoheli a amanang le gangue le liminerale tsa silicate tsa tšepe hangata ke 2.7 ~ 3.2g / cm3.Ho nka monyetla oa phapang pakeng tsa liminerale, spiral chute, jigging, tafole e sisinyehang, spiral beneficiation e ka sebelisoa Mechini, li-centrifuge le lisebelisoa tse ling tse boima tsa ho hlopha.Mokhoa ona o loketse chromite e nang le boholo ba lijo-thollo tsa kristale, 'me likaroloana tse ntle li lahleha habonolo mehatleng.
Flotation
Chromite e ka sebelisa mafura a acid kapa likokelli tsa amine ho khetha li-concentrate tse tšoanelehang ka mekhoa e thata le ea ho fiela tlas'a maemo a loketseng a pH.E loketse li-chromite tse ntle le tse ntle.
Molemo oa lik'hemik'hale
Bakeng sa ores tse ling tsa chrome tseo ho leng thata ho li sebetsana le mekhoa ea ho rua molemo ka mechine, ho amoheloa - mokhoa o kopantsoeng oa lik'hemik'hale kapa mokhoa o le mong oa lik'hemik'hale.Mekhoa ea ho rua molemo ka lik'hemik'hale e kenyelletsa: leaching e khethehileng, redox, karohano ea fuse, sulfuric acid le chromic acid leaching, phokotso le leaching ea sulfuric acid, joalo-joalo.
Mohlala oa melemo
Kereiti ea Cr2O3 e fumanehang mohatleng o itseng oa chromite Afrika Boroa ke 24.80%.Ke sebaka sa marang-rang sa ho khetha li-chute hape.Saese ea mohlala ke -40 mesh mme boholo ba karoloana bo batla bo lekana.Chromite e teng ka likaroloana tse ntle le 'mele e kopanetsoeng le li-inclusions.Liminerale tse ka sehloohong tsa gangue Ke olivine le pyroxene, e nang le seretse se senyenyane se setle.Ho ea ka mofuta oa lisampole tsa ore, mokhoa oa ho rua o theoa e le selikalikoe se bataletseng kapa se emeng mohato o le mong.
Chromite e nang le thollo e ntle e fumanehang ka har'a mehatla ea karohano ea khoheli ea chute setšeng e nka poleiti e bataletseng kapa selikalikoe se otlolohileng se matla sa karohano ea makenete, e ka khethang lihlahisoa tse tsepamisitsoeng hantle.Liminerale tse nang le chromium tse mohatleng oa makenete ke lintho tse kenyellelitsoeng hantle kapa liminerale tse ling tse senang Bohlokoa tse nang le chromium li fihletse matšoao a molemo a molemo.
Nako ea poso: Oct-12-2021