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Iron miyalayo ndi wachinayi ambiri amafotokozera mu kutumphuka padziko lapansi. Iron n'kofunika kupanga zitsulo choncho ndi zinthu zofunika chitukuko zachuma padziko lonse. Iron amadziwikanso ankagwiritsa ntchito yomanga ndi kupanga magalimoto. Kwambiri chuma chitsulo miyala ndi lopangidwa metamorphosed formations mkombero wachitsulo (BIF) imene chitsulo ambiri amene mawonekedwe a oxides, hydroxides ndi Pamlingo wamng'ono carbonates.
Mipweya ya chitsulo ores ali osiyanasiyana akuoneka lonse mu mipweya makamaka Fe zili ndi kugwirizana gangue mchere. Major chitsulo mchere kugwirizana ndi ambiri a chitsulo ores ndi hematite, goethite, limonite ndi magnetite. The Mankhwala oipitsa waukulu mu chitsulo ores ndi SiO2 ndi Al2O3. Mmene silika ndi zobala aluminiyamu mchere pano mu chitsulo ores ndi khwatsi, kaolinite, gibbsite, diaspore ndi corundum. Mwa izi nthawi zambiri zimadziwika kuti quartz ndiye silika yayikulu yokhala ndi mchere komanso kaol malire ndipo gibbsite ndiye michere yayikulu yokhala ndi alumina.
Iron miyalayo m'zigawo makamaka anachita maopareshoni otsegula dzenje migodi, chifukwa mu tailings m'badwo kwambiri. Dongosolo chitsulo miyala kupanga zimatanthauza magawo atatu: migodi, processing ndi pelletizing ntchito. awa, processing zipangitsa kuti yachitsulo kalasi bwino ndipo umagwirira zimatheka isanafike siteji pelletizing. Processing zikuphatikizapo onongani, Gawo, mphero, and concentration aiming at increasing the iron content while reducing the amount of gangue minerals. Aliyense gawo mchere ali tingachidziwe osiyana ndi ulemu kwa chitsulo ndi gangue kubala mchere, choncho amafuna osiyana ndende njira.
Magnetic separation is typically used in high-grade iron ore beneficiation where the dominant iron minerals are ferro and paramagnetic. Yonyowa ndi youma otsika Mwamphamvu maginito kulekana (LIMS) njira ntchito pokonza ores ndi katundu amphamvu maginito monga magnetite pamene yonyowa mkulu-mwamphamvu maginito kulekana ntchito nadzawasankhula Fe zobala mchere ndi katundu ofooka maginito monga hematite kwa mchere gangue. ngati goethite ndi limonite Iron ores ambiri opezeka tailings ndipo alibe kupatukana bwino ndi njira kapena.
Asamire ntchito kuchepetsa zili zosafunika mu otsika kalasi chitsulo ores. Iron ores akhoza anaikira kaya ndi mwachindunji anionic flotation wa oxides chitsulo kapena kuthetsa cationic flotation wa silika, Komabe chigamulocho cationic flotation akanali wotchuka flotation njira ntchito makampani chitsulo. Ntchito flotation ake okha ndi mtengo wa reagents, pamaso pa silika ndi aluminiyamu wolemera slimes ndi kukhalapo kwa mchere carbonate. Komanso, flotation amafuna zinyalala madzi mankhwala ndi ntchito dewatering pambuyo pake ntchito youma komaliza.
Ntchito flotation kwa ndende ya chitsulo kumaphatikizapo desliming monga akuyandama pamaso pa zotsatira ndalama mu dzuwa utachepa ndi ndalama yapamwamba reagent. Desliming n'zofunika makamaka kuchotsa aluminiyamu monga kulekana kwa gibbsite ku hematite kapena goethite ndi wothandizila aliyense padziko-yogwira ndi kovuta. Ambiri aluminiyamu zimakhudza mchere akupezeka bwino kukula osiyanasiyana (<20m'modzi) kuloleza kuchotsedwa kwake kudzera pakufinya. Cacikulu, kuchuluka kwa ziphuphu (<20m'modzi) Ndipo alumina amalimbikitsa pakufunika kwa wokhometsa cationic ndipo amachepetsa kusankha kwakukulu. Chifukwa chake desliming imawonjezera kukhathamiritsa kwa flotation, koma zimapangitsa kuchuluka kwakukulu kwa masanjidwewo ndi kutayika kwa chitsulo kumka ku mitsinje yamagawo.
Kuuma kwa chitsulo kumapereka mwayi ochotsera ndalama ndi kulumikizana ndi chimbudzi chokhudzana ndi kufota. STET yawunika mayendedwe angapo achitsulo ndi kuyimitsidwa kwa zitsanzo za ma ore pam benchi (kuchuluka pre-kuthekera). Kuyenda kofunikira kwazitsulo ndi ma silisitara kunawonedwa, ndi zitsanzo zosonyezedwa pagome pansipa.
Zotsatira za kafukufuku izi zinasonyeza kuti otsika kalasi chitsulo ndalama miyala akhoza akweza mwa STET tribo-electrostatic lamba olekanitsa. Kutengera ndi STET, mankhwala achire komanso / kapena kalasi adzakhala kwambiri kusintha pa woyendetsa processing lonse, poyerekeza chipangizo benchi-ang'ono mayeso ntchito pa izi mayesero chitsulo miyalayo.
The STET dry electrostatic fine iron ore separation process offers many advantages over traditional wet processing methods, monga maginito kapena kufota, kuphatikizapo:
Lumikizanani nafe kuti tidziwe zambiri za kuyanika kwazitsulo.
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