I-Chromite yinto ebalulekileyo yokunyibilikisa i-ferroalloys, insimbi engenasici kunye ne-alloys exabisekileyo.Imboni ye-metallurgical isebenzisa malunga ne-60% yechromium, eyona nto isetyenziselwa ukuvelisa insimbi ye-alloy, ngakumbi insimbi engenasici.Kwangaxeshanye, ichromite ikwasetyenziswa ngokubanzi kwishishini le-refractory, ishishini lemichiza kunye neshishini lokukhanya.
Iimpawu zentsimbi
Kukho ngaphezu kwamashumi amahlanu eentlobo zeeminerali ezine-chromium ezifumaneka kwindalo, kodwa ekuphela kweeminerali ezine-chromium ezinexabiso leshishini yichromite, eyi-spinel (MgO, Al2O3), magnesia chromite (MgO, Cr2O3), kunye nemagnetite.(FeO, Fe2O3) kunye nezinye izisombululo eziqinileyo.Ngokwethiyori, i-chemical formula ye-chromite yi-FeO, i-Cr2O3, iqulethe i-68% Cr2O3, i-32% ye-FeO, i-magnetic ephakathi, ubuninzi be-4.1 ~ 4.7g / cm3, ubunzima be-Mohs 5.5 ~ 6.5, kunye nokubonakala komphezulu ukusuka kumnyama ukuya kumnyama omnyama.Iiminerali zeGangue ikakhulu ziquka i-olivine, inyoka kunye nepyroxene, ngamanye amaxesha ihamba kunye nenani elincinci le-vanadium, i-nickel, i-cobalt kunye neqela le-molybdenum.
ITekhnoloji yoLungiso
Imithombo yechromite yaseTshayina ihlwempuzekile, ikakhulu igxile eTibet, Xinjiang, Inner Mongolia, Gansu nakwamanye amaphondo.Imithombo yechromite yangaphandle isasazwa ikakhulu eMzantsi Afrika, eRashiya, eBrazil, eMelika nakwamanye amazwe.I-Chromite ineempawu zokuxinana okuphezulu, i-magnetism ephakathi kunye namasuntswana ekristale.Ngokubanzi, ihlelwa ngokuhlamba intsimbi, ukwahlukana okubuthathaka kwemagneti, ukwahlula okuphakathi kokuqina kwemagnethi, ukwahlula umxhuzulane, ukudada kunye nezinye iinkqubo.
Indlela yokuhlamba
Ilungele i-chromite ore ene-coarse-grained ore kunye nenqanaba eliphezulu lentsimbi ekrwada kwaye ubukhulu becala udaka olufana nodongwe olucolekileyo njengobumdaka.Iimveliso ezifanelekileyo ze-coarse concentrate zingakhethwa ngokuhlamba okulula.
Ukwahlukana kwemagneti
I-Chromite ineempawu zemagneti eziphakathi kwaye inokwahlulwa ngowomileyo okanye omanzi wokwahlulwa kwemagnethi.Imagnethi ehambelanayo iqale yahlulwe nguzibuthe obuthathaka, kwaye emva koko yahlulwe ngokwemagnethi yiCXJ okanye iCFLJ, isahluli semagnethi ipleyiti, isandi esithe nkqo isahluli esiphakamileyo semagnethi, njl.Indlela yokwahlukana kwamagnetic ineenzuzo zomthamo omkhulu wokucubungula kunye nezibonakaliso ezizinzileyo.
Indawo yesicelo sechromite yaseMzantsi Afrika
Ukuhlela imidiya enzima
Ubunzima obuthile be-chromite yi-4.1 ~ 4.7g / cm3, kunye nobunzima obuthile be-ganggue ehambelanayo kunye neeminerali ze-silicate zensimbi ngokuqhelekileyo ziyi-2.7 ~ 3.2g / cm3.Ukuthatha ithuba lomahluko wokuxinana phakathi kweeminerali, i-spiral chute, ukushukuma, itafile eshukumayo, i-spiral beneficiation ingasetyenziswa Oomatshini, ii-centrifuge kunye nezinye izixhobo ezinzima zokuhlela.Le ndlela ifanelekile kwi-chromite ene-coarser crystal grain size, kwaye iincinci ezincinci zilahleka ngokulula kwi-tailings.
Ukuphaphatheka
I-Chromite inokusebenzisa i-asidi enamafutha okanye abaqokeleli be-amine ukukhetha izigxininisi ezifanelekileyo ngokusebenzisa iinkqubo ezirhabaxa kunye nokutshayela phantsi kweemeko ezifanelekileyo ze-pH.Ifanelekile kwi-chromites ecocekileyo kunye ne-fine-grained.
Uncedo lwekhemikhali
Kwamanye ama-ores e-chrome anzima ukucutshungulwa ngeendlela zokuxhamla ngomatshini, i-beneficiation-chemical processed process okanye indlela yeekhemikhali enye yamkelwa.Iindlela zokunceda iikhemikhali ziquka: i-leaching ekhethiweyo, i-redox, ukwahlula i-fuse, i-asidi ye-sulfuric kunye ne-chromic acid leaching, ukunciphisa kunye ne-sulfuric acid leaching, njl.
Umzekelo wokuxhamla
Ibakala le-Cr2O3 eliqulethwe kumsila othile wechromite eMzantsi Afrika ngama-24.80%.Yintsika ye-chute ekwisiza yokuphinda ikhethe kwakhona.Ubungakanani besampulu yi-40 mesh kwaye ubukhulu be-particle bufana ngokufanayo.Ichromite ikhona kwiincinci ezincinci kunye nemizimba edibeneyo kunye nokubandakanywa.Iiminerali eziphambili ze-ganggue I-olivine kunye ne-pyroxene, kunye nenani elincinci lodaka oluhle.Ngokobume beesampulu zentsimbi ekrwada, inkqubo yokuzuza isekwa njengeringi ecaba okanye ethe nkqo enenyathelo elinye lokurhaxa.
Ichromite ecolekileyo equlethwe kwiintsila zokwahlulwa komxhuzulane we-chute kwisiza yamkela ipleyiti ecaba okanye umsesane othe nkqo owomeleleyo wenkqubo yokwahlula imagnethi, enokuthi ukhethe iimveliso ezilungeleleneyo zokugxila.Iiminerali eziqulathe ichromium kumsila wemagnethi zizibandakanyiki ezicolekileyo okanye ezinye iiminerali ezingenaXabiso ezinechromium zizuze izalathi ezilungileyo zokuxhamla.
Ixesha lokuposa: Oct-12-2021