Melemo ea Iron Iron

Tsepe ea ke bone atileng ka ho fetisisa karolo ea ka karolong e ka holimo ba lefatše. Tšepe ke habohlokoa ho etsa thepa tšepe 'me ka hona e lintho tse bonahalang ea bohlokoa bakeng sa ntshetsopele ya bokgoni a moruo oa lefatše lohle. Tšepe e hape ho pharaletseng sebelisoa ka kaho le ho etsa thepa ea makoloi. Boholo ba mehlodi ya tsepe ea li entsoe ka metamorphosed lihlopha e bofilwe tšepe (BIF) oo tšepe e ka tloaelo fumanoe ka mokgwa wa oxides, hydroxides 'me ka tekanyo e monyenyane carbonates.

The lik'hemik'hale ea tšepe tšepe e na le mefuta e fapaneng ho bonahalang eka lohle ka lik'hemik'hale haholo-holo bakeng sa Fe dikahare 'me a tloaelana gangue liminerale. Major tšepe liminerale tse amanang le boholo ba tšepe tšepe tse hematite, goethite, limonite le magnetite. The contaminants sehloohong tšepe tšepe tse SiO2 le Al2O3. The tloaelehileng silica le behang ea alumina liminerale le teng ka tšepe tšepe ke quartz, kaolinite, gibbsite, diaspore le corundum. Har'a tsena ho hlokomeloa khafetsa hore quartz ke sesebelisoa sa mantlha sa silika se nang le kaolinite le gibbsite ke liminerale tse peli tse ka sehloohong tse nang le liminerale.

Tsepe ea qotsitsoeng ho e haholo-holo a ileng ae etsa ka tshebetso bulehileng sekoting meepo, sephetho le ka tailings molokong o mong ka bohlokoa. Tsamaiso ea tsepe ea tlhahiso ea hangata mekhahlelo e meraro: meepo, sebetsa le pelletizing mesebetsi. tsena, sebetsa etsa bonnete ba hore oa tšepe sehlopheng lekaneng le k'hemistri e fihlellwa pele ho sethaleng pelletizing. Processing akarelletsa ho sithabetsa, tlhophiso, ho sila, and concentration aiming at increasing the iron content while reducing the amount of gangue minerals. E mong le e depositi matsoai na le litšobotsi tse lona ikhethang mabapi le tšepe le gangue behang liminerale, 'me ka hona e hloka e fapaneng tsa mahloriso mokhoa.

Magnetic separation is typically used in high-grade iron ore beneficiation where the dominant iron minerals are ferro and paramagnetic. Metsi le omileng tlase matla a khoheli a karohano (LIMS) dithekeniki li sebelisetsoa ho ho sebetsa tšepe le thepa matla a khoheli a kang magnetite ha metsi phahameng-matla a khoheli a karohano e sebelisoa ho arola Fe behang liminerale le thepa fokolang a khoheli a kang hematite tloha liminerale gangue. joalo goethite le limonite tšepe tšepe ka tloaelo fumanoe ka tailings 'me ha a arohana hantle haholo ke mokhoa ka.

Flotation e sebediswa ho fokotsa diteng tsa litšila tlaase sehlopheng tšepe tšepe. Tšepe tšepe ka concentrated ebang ke ka ho toba anionic flotation tsa oxides tšepe kapa etsolla cationic flotation tsa silica, Leha ho le joalo etsolla cationic flotation sa ntse e le ka ho fetisisa ratoa flotation tsela sebediswa ho indasteri e tšepe. Tshebediso ya flotation lona feela ka litšenyehelo tsa reagents, ho ba teng ha silica le ea alumina e ngata slimes le ho ba teng ha liminerale carbonate. Ho feta moo, flotation hloka litšila kalafo metsi le ho sebelisa dewatering tlaase ho linoka tsa dikopo omileng ho qetela.

Tshebediso ya flotation bakeng sa mahloriso ea tšepe e boetse e akarelletsa desliming e phaphametseng ka ho ba teng ha sephetho difaene ka bokgoni fokotseha le ditjeho phahameng reagent. Desliming e mahlonoko tseo ho leng haholo-holo bakeng sa ho tlosa ea alumina e le karohano ea gibbsite tloha hematite kapa goethite ke mahlahana efe kapa efe holim-a sebetsang a ke ho le thata haholo. Boholo ba ea alumina behang liminerale le hlaha ka molemo boholo kgatlhanang (<20a) e lumella hore e tlosoe ka ho theoha. ka kakaretso, palo e phahameng ea likotlo (<20a) le ea alumina eketsa ho hlokahala lera cationic lethal dose le decreases khetha khetha haholo. Ka lebaka leo, desliming eketsa bokgoni flotation, empa e fella ka molumo o moholo oa mehatla le tahlehelo ea tšepe ho molatsoana oa tailings.

Ts'ebetso e ommeng ea tšepe ea tšepe e fana ka monyetla oa ho felisa litšenyehelo le moloko o metsi o kopantsoeng le ho potoloha le lipotoloho tse metsi tse arohaneng tsa makenete. STET e hlahlobile mehatla e mmaloa ea tšepe ea tšepe le tsamaiso ea lirafshoa tsa merafo ka bencheng (tekanyo ea pele ho khoneha). Ho ile ha bonoa motsamao oa bohlokoa oa tšepe le li-silicates, ka mehlala e totobalitsoeng tafoleng e ka tlase.

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Liphello tsa ho ithuta hona o ile a bontša hore tlaase sehlopheng tšepe difaene manya ka ntlafatswa ka STET tribo-electrostatic lebanta kgaoganyo. E Thehiloe ho boiphihlelo STET, sehlahisoa hlaphoheloa le / kapa sehlopheng tla haholo ho ntlafatsa ka motsamaisi e lokisa tekanyo e, e le bapisoa le sesebediswa bencheng ka tekanyo e teko sebelisoa nakong liteko tsena tšepe manya.

The STET dry electrostatic fine iron ore separation process offers many advantages over traditional wet processing methods, tse kang magnetics kapa flotation, ho kopanyelletsa le tse:

Ha ho tshebediso ya metsi. Ho felisoa ha metsi hape felisa pompa, ho tenya, le omisa, hammoho le ditjeo efe kapa efe le likotsi tse amanang le kalafo metsi le ho lahla.
Ha ho metsi tailings lahla. Recent high-profile failures of tailings dams have highlighted the long-term risk of storing wet tailings. ke tlhokahalo, mineral processing operations produce tailings of some sort, empa STET electrostatic kgaoganyo tailings bolokolohing ba metsi le lik'hemik'hale. Sena se nolofalletsa ho inolofaletse molemo botjha tshebediso ya tailings ho. Tailings hore u se lokela ho ho bolokoa ka tsoakane le ka bophahamo ba modumo e nyenyane ea metsi bakeng sa taolo leru la lerole.
Ha ho phaella tabeng ea lik'hemik'hale hlokahala. lik'hemik'hale Flotation ke e tsoelang pele ho sebetsa litšenyehelo bakeng sa tshebetso matsoai sebetsa.
A loketse bakeng sa sebetsana powders o motle. Ho ka 'na ha se ke ha hlokahala hore ho fokotsoe ho ipapisitsoe le ore mineralogy le grade.
Ka tlaase theko le dipeeletso tsa (CAPEX) le theko e tlaase ho sebelisa mehaho (OPEX).
Phomolo ea ho lumelloa ka lebaka la nyenyefatso ea tikoloho, phediso ya kalafo ya metsi

Iteanye le rona ho ithuta haholoanyane ka ts'ebetso e ommeng ea tšepe ea tšepe.

References:

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