I-Chromite yinto ebalulekileyo yokunyibilikisa ii-ferroalloys, intsimbi engagqwaliyo kunye nee-alloys ezixabisekileyo. Ishishini le-metallurgical lisebenzisa malunga ne-60% ye-chromium, esetyenziswa kakhulu ukuvelisa intsimbi ye-alloy, ingakumbi intsimbi engagqwaliyo. Kwangaxeshanye, i-chromite ikwasetyenziswa kakhulu kwishishini elichasayo, kwishishini leekhemikhali kunye nakwishishini lokukhanya.
Iipropati ze-ore
Kukho iintlobo ezingaphezu kwamashumi amahlanu zeeminerali ezine-chromium ezifumaneka kwindalo, kodwa iiminerali ezine-chromium kuphela ezinexabiso lemizi-mveliso yi-chromite, eziyi-spinel (MgO, Al2O3), i-magnesia chromite (MgO, Cr2O3), kunye ne-magnetite. (FeO, Fe2O3) kunye nezinye izisombululo eziqinileyo. Ngokwethiyori, ifomula yekhemikhali ye-chromite yi-FeO, Cr2O3, equlethe i-68% Cr2O3, 32% FeO, i-magnetic ephakathi, i-density 4.1~4.7g/cm3, ubunzima be-Mohs 5.5~6.5, kwaye imbonakalo yomphezulu isusela kumnyama ukuya kumdaka omnyama. Iiminerali ze-Gangue ziquka i-olivine, i-serpentine kunye ne-pyroxene, ngamanye amaxesha zihamba kunye nenani elincinci le-vanadium, i-nickel, i-cobalt kunye ne-molybdenum group elements.
Itekhnoloji yokucubungula
Izixhobo ze-chromite zaseTshayina azikho semgangathweni, ikakhulu zigxile eTibet, eXinjiang, e-Inner Mongolia, eGansu nakwamanye amaphondo. Izixhobo ze-chromite zangaphandle zisasazwa kakhulu eMzantsi Afrika, eRashiya, eBrazil, e-United States nakwamanye amazwe. I-Chromite ineempawu zoxinano oluphezulu, i-medium magnetism kunye namasuntswana ekristale aqinileyo. Ngokubanzi, ihlelwa ngokuhlanjwa kwe-ore, ukwahlulwahlulwa kwe-magnetic okubuthathaka, ukwahlulwahlulwa kwe-magnetic okunamandla okuphakathi, ukwahlulwahlulwa komxhuzulane, ukutyibilika kunye nezinye iinkqubo.
Indlela yokuhlamba
Ifanelekile kwi-chromite ore ene-grained grain ene-ore eluhlaza ekumgangatho ophezulu kwaye ikakhulu udaka olucolekileyo olufana nodongwe njengokungcola. Iimveliso eziqinileyo ze-coarse concentrate zinokukhethwa ngokuhlanjwa okulula.
Ukwahlulwa kwemagnethi
I-Chromite ineempawu zemagnethi eziphakathi kwaye inokwahlulwa ngokwahlukana kwemagnethi okomileyo okanye okumanzi. Imagnethi enxulumene nayo iqala yahlulwe yimagnethi ebuthathaka, ize yahlulwe ngemagnethi nge-CXJ okanye i-CFLJ, i-plate magnetic separator, i-vertical ring high gradient magnetic separator, njl. Izixhobo zenza uphuculo olomileyo nolumanzi, kwaye zinokukhetha iimveliso eziqinileyo ezifanelekileyo. Indlela yokwahlulwa kwemagnethi ineengenelo zomthamo omkhulu wokucubungula kunye nezalathisi ezizinzileyo.
Indawo yokusetyenziswa kwe-chromite eMzantsi Afrika
Ukuhlelwa kweendaba ezinzima
Ubunzima obuthile be-chromite yi-4.1 ~ 4.7g / cm3, kwaye ubunzima obuthile be-gangue kunye ne-iron silicate minerals ezinxulumene nazo ngokubanzi yi-2.7 ~ 3.2g / cm3. Ukusebenzisa umahluko kubuninzi phakathi kweeminerali, i-spiral chute, i-jigging, i-shaking table, i-spiral beneficiation zingasetyenziswa. Oomatshini, ii-centrifuges kunye nezinye izixhobo zokuhlunga ezinzima zokucwangcisa. Le ndlela ifanelekile kwi-chromite enobukhulu be-crystal grain, kwaye amasuntswana amancinci alahleka lula kwi-tailings.
Ukudada
I-Chromite ingasebenzisa abaqokeleli be-fatty acid okanye i-amine ukukhetha izinto ezixutyiweyo ezifanelekileyo ngokusebenzisa iinkqubo zokurhawuzelela nokuhluza phantsi kweemeko ezifanelekileyo ze-pH. Ifanelekile kwii-chromites ezicolekileyo nezicoliweyo.
Ukuphucula iikhemikhali
Kwezinye ii-ore ze-chrome ezinzima ukucutshungulwa ngeendlela zokulungisa i-mechanical beneficiation, kusetyenziswa inkqubo yokulungisa i-chemical combined okanye indlela enye ye-chemical. Iindlela zokulungisa i-chemical beneficiation ziquka: ukucola okukhethiweyo, i-redox, ukuhlukaniswa kwe-fuse, ukucola i-sulfuric acid kunye ne-chromic acid, ukunciphisa kunye nokucola i-sulfuric acid, njl.
Umzekelo wokuzuza
Udidi lwe-Cr2O3 oluqulethwe kwi-chromite tailing ethile eMzantsi Afrika yi-24.80%. Luhlobo lwe-chute re-selection tailings olukwindawo ethile. Ubungakanani besampulu yi--40 mesh kwaye ubungakanani be-particle buyafana. I-chromite ikhona kwii-particles ezincinci kunye nemizimba edibeneyo kunye nezinto ezibandakanyiweyo. Iiminerali eziphambili ze-gangue. Yi-olivine kunye ne-pyroxene, enodaka oluncinci olucolekileyo. Ngokwendalo yeesampuli ze-ore, inkqubo yokuzuza imiselwa njengendandatho ethe tyaba okanye ethe nkqo yokurhawuzelela inyathelo elinye.
I-chromite ecolekileyo equlethwe kwiintsalela zokwahlulahlula umxhuzulane kwindawo ethile isebenzisa ipleyiti ethe tyaba okanye inkqubo yokwahlulahlula i-vertical ring strong magnetic, enokukhetha iimveliso eziqinileyo zokugxila. Iiminerali eziqulathe i-chromium kumsila we-magnetic ziyi-inclusions ezicolekileyo okanye ezinye iiminerali ezingezona ezixabisekileyo ze-chromium zifumene izalathisi ezilungileyo zokuzuza.
Ixesha lokuthumela: Oktobha-12-2021