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Iron dhadhaab waa element afaraad ee ugu badan ee qolof dhulka ee. Iron waa lagama maarmaan si wax soo saarka steel oo sidaas daraaddeed wax muhiim u ah horumarka dhaqaale ee caalamka. Birta waxaa sidoo kale si weyn loo adeegsado dhismaha iyo warshadaha baabuurta. Inta badan khayraadka macdanta birta ka kooban yihiin qaababka bir ah oo nidar metamorphosed (BIF) taas oo bir ah waxaa caadi ahaan laga helo qaab oxides, hydroxides iyo ilaa xad yar carbonates.
Walxaha kiimikada ee senti bir ah ayaa kala duwan oo muuqata ballaaran ee Halabuurka kiimikada gaar ahaan content Fe iyo macdan gangue la xiriira. macdanta birta Major la xiriira inta badan senti birta waa hematite, goethite, limonite iyo magnetite. The sunta ugu weyn ee senti ay bir yihiin SiO2 iyo Al2O3. silica iyo dhalista alumina The macdanta caadiga jooga senti ay bir yihiin quartz, kaolinite, gibbsite, diaspore iyo corundum. Kuwaas oo inta badan lagu arkay in quartz waa macdan silica dhalista ugu weyn iyo kaolinite iyo gibbsite waa alumina sidda macdanta laba-ugu weyn.
Iron fiirsato ore waxaa inta badan lagu sameeyaa iyada oo loo marayo howlo macdan god furan, taasoo keentay in tailings jiilka weyn. nidaamka wax soo saarka macdanta birta ayaa inta badan waxay ku lug leedahay saddex marxaladood: macdanta, processing iyo pelletizing hawlaha. Kuwaas oo kala ah, processing hubisaa in fasalka bir ku filan iyo kimistari waxaa lagu gaarayaa ka hor stage pelletizing ah. Processing ka mid ah burburiyo, kala soocidda, shiididda, and concentration aiming at increasing the iron content while reducing the amount of gangue minerals. deposit macdanta kasta wuxuu leeyahay dabeecadihiisa u gaarka ah marka la eego birta iyo gangue sita macdanta, oo sidaas daraaddeed waxay u baahan tahay farsamo-fiirsashada kala duwan.
Magnetic separation is typically used in high-grade iron ore beneficiation where the dominant iron minerals are ferro and paramagnetic. Qoyan iyo qalalan low-xoogga-soociddiisa magnetic (Maccido) farsamooyinka waxaa loo isticmaalaa si loo farsameeyo senti la guryaha magnetic xoog sida magnetite halka qoyan-xoojinta sare-soociddiisa magnetic waxaa loo isticmaalaa in la kala saaro macdanta Fe-dhalaya leh guryaha magnetic daciif ah sida hematite ka macdanta gangue. senti Iron goethite iyo limonite sida caadi ahaan laga helo tailings iyo ma kala aad u wanaagsan by farsamo midkood.
Sabeynta ee loo isticmaalo si loo yareeyo content ee nijaasta ahaa in senti bir-fasalka hooseeyo. senti Iron la isugu karaa by sabeynta anionic si toos ah oxides birta ama beddeli sabeynta cationic ee silica, Si kastaba ha ahaatee beddeli sabeynta cationic weli wadada sabeynta ee ugu caansan isticmaalaa in industry birta. Isticmaalka sabeynta ee ay xadiday qiimaha reagents, joogitaanka silica iyo alumina-hodan slimes iyo jiritaanka macdanta carbonate. Waxaa intaa dheer, sabeynta ee u baahan daaweynta biyaha wasakhda iyo isticmaalka dewatering geysto codsiyada final qalalan.
Isticmaalka sabeynta for fiirsashada bir ah ay sidoo kale ku lug leedahay desliming Dhalanteed ay goobjoog ka ahaayeen natiijada ganaaxa ku oolnimada hoos iyo kharashka reagent sare. Desliming si gaar ah muhiim u ah ka saarida ee alumina sida kala-soocidda gibbsite ka hematite ama goethite by kasta wakiilada dusha-firfircoon waa kuwo ku adag. Inta badan macdanta dhalista alumina dhacdaa kala duwan size qaadhaan ah (<20a) jidaynayey ay ka saarida dhex desliming. Guud ahaan, uruuray sare oo ganaax (<20a) iyo alumina kordhiyaa dose ururiyaha cationic loo baahan yahay iyo hoos u selectivity fideen. Sidaa darteed desliming kordhiyaa oolnimada sabeynta, laakiin natiijada ee mugga weyn ee tailings iyo khasaaro bir ah in tailings ku qulquli.
processing qalalan of iron ore u keenaysaa fursado si loo baabi'iyo kharashka iyo jiilka tailings qoyan la xidhiidha sabeynta iyo wareeggeedii-soociddiisa magnetic qoyan. STET ayaa qiimeeyaa dhowr tailings iron ore oo baxsad ah baarka ore anigaa at qiyaasta kursiga keydka (qiyaasta pre-Bulshda). dhaqdhaqaaqa weyn oo bir ah iyo silicates ayaa lagu arkay, tusaale muujiyey shaxda hoose.
Natiijada daraasaddan muujiyeen in ganaax iron ore-fasalka hooseeyo la casriyeeyay karaa iyadoo qofka la SEPARATOR suunka STET tribo-electrostatic. Iyada oo ku saleysan waayo aragnimada STET, dib u soo kabashada soo saarka iyo / ama fasalka si weyn u hagaajin doonaa tijaabo processing qiyaasta, marka la barbar dhigo qalabka imtixaanka kursiga keydka-baaxadda faa'iideysan inta lagu guda jiro kuwaas oo ahaa jirrabyadii iron ore.
The STET dry electrostatic fine iron ore separation process offers many advantages over traditional wet processing methods, sida magnetics ama sabeynta, lugu daro:
Nala soo xiriir si aad wax badan oo ku saabsan processing qalalan of iron ore u bartaan.
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