Atolosa Dikopo ka Dry Triboelectric arohana oa liminerale

Atolosa Dikopo ka Dry Triboelectric

Karohano oa liminerale

James D. Bittner, Kyle P. Flynn, le Frank J. Hrach

ST Helmets & Technology LLC, Needham Massachusetts 02494 usa

Tel: +1-781-972-2300, imeile: jbittner@titanamerica.com

inahaneloang

ST Helmets & Technology, LLC (STET) e tsoetseng pele tsamaiso ea sebetsa e thehiloeng triboelectrostatic lebanta karohano hore e fana ka indasteri ea matsoai lokisa mokhoa oa ho beneficiate thepa e ntle le e thekenoloji ka ho feletseng omileng. Ho fapana le tse ling tse dithulaganyo electrostatic karohano hore ba ka tloaelo ho lekanyetsoa feela likaroloana moholo ho 75μm ka boholo, le triboelectric lebanta kgaoganyo e sebakeng se loketseng loketseng bakeng sa karohano ea e ntle haholo (<1μm) ho tekano mahoashe (300μm) likaroloana le throughput phahameng haholo. The phahameng bokgoni selotlolo sethaleng karohano ka tjhaja hare / recharging le recycle ho fella ka karohano phahametseng hōle hore ka finyelloang le tloaelehileng le 'ngoe-sethaleng free- oela triboelectrostatic kgaoganyo. The triboelectric lebanta kgaoganyo thekenoloji 'nile la sebelisoa ho arohana e mengata e fapaneng ea thepa ho akarelletsa le metsoako ea aluminosilicates le kang khalase / k'habone, calcite / quartz, talc / magnesite, le barite / quartz. E bapisoa moruo sebedisa triboelectrostatic lebanta karohano e bapisiwa le tloaelehileng flotation bakeng barite / quartz karohano e bontša melemo ea ho e lokisa omileng bakeng liminerale.

Keywords: liminerale, karohano omileng, barite, triboelectrostatic tjhaja, lebanta kgaoganyo, fofa molora

SELELEKELA

Ho haella ha metsi a hloekileng e ho ba ntlha e ka sehloohong e amang ea bokgono ea merero meepo lefatšeng ka bophara. Ho latela Hubert Fleming, pele e neng e mookameli oa lefatše lohle bakeng sa Hatch Metsi, "Ea merero tsohle meepo lefatšeng hore ba e ka ba se ile a khaotsa ho, kapa khoehlisa fetang selemo e fetileng, e bile, hoo e ka bang 100% ba maemong, ka lebaka la metsi, ka ho toba kapa ka tsela e sa tobang "Bislama (2013). Dry mekhoa matsoai sebetsa fana ka tharollo ea bothata bona tlang.

karohano mekhoa metsi kang froth flotation hloka go tlaleletsa ka reagents lik'hemik'hale e lokelang ho sebetsoa ka tsela e sireletsehileng le ho lahloa ka mokhoa o tikoloho le boikarabelo ba. Hona joang kapa joang ho ke ke ha khoneha hore li sebetse le 100% recycle metsi, hlokang lahla bonyane oa karolo e itseng ea metsi a thulaganyou e, ka etsahala hore ebe e nang le mesaletsa e ngata ea reagents lik'hemik'hale.

mekhoa Dry kang karohano electrostatic tla felisa ho hlokahala hore metsi a hloekileng, le fana ka le monyetla oa ho fokotsa ditjeo. E mong oa ka ho fetisisa tsepisa tsoelo-pele e ncha ka karohano omileng matsoai ke triboelectrostatic lebanta kgaoganyo. theknoloji ena e atoloswa ho phatsa boholo mefuta e fapaneng ya ho molemo likaroloana ho feta tloaelehileng theknoloji e electrostatic karohano, ka mefuta e fapaneng moo feela flotation e atlehile nakong e fetileng.

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Figure 2. Dintlha tsa libaka karohano

tshebetso e ommeng ka ho feletseng, hloka ha thepa tse eketsehileng 'me a hlahisa metsi litšila kapa mesi e kotsi moeeng. Tabeng ea k'habone tloha fofa karohano molora, thepa hlaphoheloa bopilwe fofa molora fokotswa ka dikahare k'habone ho maemo a loketse bakeng sa tshebediso ya ka admixture pozzolanic ka konkreiti s, le phahameng k'habone karoloana e ka chesa ka motlakase fehla motlakase dimela. Tshebediso ya melapo sehlahisoa bobeli e fana ka 100% tharollo ho fofa mathata molora lahla.

The triboelectrostatic lebanta kgaoganyo ke batlang diseke ee. A mochini etselitsoeng ho sebetsa 40 tonnes ka hora ke hoo e ka bang 9.1 limithara tse (30 feat) nako e telele, 1.7 limithara tse (5.5 feat.) bophara le 3.2 limithara tse (10.5 feat.) phahameng. Hlokahalang ho leka-lekana ea limela e na le tsamaiso ea ho fetisa boitsebiso bo bongata omileng ho le ho tloha kgaoganyo ho. The compactness ea tsamaiso e lumella tenyetsehe merero tlhomamiso.

Figure 3. Commercial triboelectrostatic lebanta kgaoganyo

Papiso ho dithulaganyo tse ling electrostatic karohano

The triboelectrostatic thekenoloji lebanta karohano haholo atolosa e fapaneng ya thepa e ka beneficiated ke dithulaganyo electrostatic. Ka ho fetisisa e atisa ho sebelisoa e hlophisitsweng, electrostatic itšetleha ka ho se tšoane ka conductivity ea motlakase ea thepa le ho arohane. Ka dithulaganyo tsena, lintho tse bonahalang tse o lokela ho ikopanya le e moqomo motheo o tiileng kapa poleiti ka tloaelo ho ka mor'a hore likaroloana tse bonahalang di hlonamisitsoe qosoa ka ionizing Corona tjhajoloha. thepa Conductive tla lahleheloa ke qoso bona ka potlako le ka ho lahleloa tloha moqomo le. lintho tse bonahalang tse bao e seng conductive tsoela pele ho khahloa ke moqomo le ho tloha

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qoso tla dissipate butle ho feta 'me a tla oela kapa ho brushed tloha moqomo le ka mor'a ho arohana le boitsebiso khanna. dithulaganyo tsena li felle feela ka ho ba le mothamo ka lebaka la ho ikopanya tlhokigang mong le o mong phatsa ho moqomo kapa poleiti. The e sebetsa ka ho ikopanya le lefisa dithulaganyo ba boetse ba felle feela likaroloana tse ka bang 100 μm kapa haholoanyane boholo ka lebaka la le hore ho hlokahala bobeli sa ho ikopanya le lekapa le motheo o tiileng le ho hlokahalang dipharologanyo phallo phatsa. Likaroloana tsa boholo bo fapaneng o tla le bona ba na dipharologanyo fapaneng phallo e loketseng ho litla inertial le tla fella ka karohano e thefulehile habohloko. Setshwantshothalo latelang (Figure 4) e bontša likarolo tsa motheo tsa mofuta ona wa kgaoganyo.

Figure 4. Drum electrostatic kgaoganyo "Elder (2003)"

karohano Triboelectrostatic ha e felle karohano ya conductive / thepa bao e seng conductive empa li itšetlehile ka lipono tse makatsang tsa tsebahala ho tefo phetiso ke ho ikopanya frictional ea thepa le k'hemistri dissimilar holim. ketsahalo ena e 'nile ea sebelisoa ka "bolokolohi ho oa" dithulaganyo karohano ka lilemo tse mashome. tšebetso e joalo e bontšoa ka ho Figure 5. Dikarolo tsa motsoako oa likaroloana pele ho ntshetsa pele liqoso fapaneng ke ho ikopanya le e ka ba ka holim'a tšepe, kapa ke phatsa ho phatsa ikopanye le ka fluidized sesebediswa bethe fepa. E le likaroloana e oela tšimong ea motlakase ka libaka eleketrode, tsela e mong le e phatsa e khutlisetsa sepakapakeng ho ella eleketrode ho tefo bo fapaneng. Mora sebakeng se itseng, pokello tsa seretse tse hiriloe ho arole ba melapo. ditlhomo tloaelehileng hloka mekhahlelo multiple kgaoganyo le recycle ea karoloana middling. Ba bang ba le disebediswa tse sebelisa nōka e tsitsitseng ea khase ho thusa fetisetsana ya likaroloana ka ka libaka eleketrode.

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Figure 5. "Free ho oa" triboelectrostatic kgaoganyo

mofuta ona wa ea bolokolohi ho oa kgaoganyo boetse o na le mefokolo ka phatsa boholo ba lintho tse bonahalang tse hore a ka ho sebetswa. Ho phalla hare ho libaka eleketrode tlameha ho laoloa ho fokotsa loebehlanang ho qoba "smearing" ho arohana le. The tsela ea likaroloana bo botle ba ho feta ba tlisa ho ke loebehlanang tloha aerodynamic e hula mabotho a ka likaroloana motle ke seholo ho feta sa makhotla a khoheli le electrostatic. The likaroloana e ntle haholo e tla boela le tšekamelo ea ho bokella ka bokaholimo eleketrode le lokela ho tlosoa ka mokhoa bang. Likaroloana ka tlase ho 75 μm ke ke ka tsela e atlehang arohane.

moedi 'ngoe ke hore phatsa play loading hara libaka eleketrode tlameha ho ba tlaase ho thibela liphello sebaka qoso, eo fokotsa sekhahla sebetsa. Ho fetisetsa boitsebiso bo bongata ka libaka eleketrode tlhaho fella ka karohano le 'ngoe-sethaleng, kaha ho na le ho na le monyetla bakeng sa botjha tjhaja ya likaroloana. Ka lebaka leo,, tsamaiso ea selotlolo sethaleng lia hlokahala bakeng sa ho ntlafatsa tekanyo ea karohano ho akarelletsa botjha tjhaja ya lintho tse bonahalang tse ke ho ikopanya le morago ga moo e le sesebelisoa lefisa. La sephetho le thepa bophahamo ba modumo le e rarahaneng ea eketseha loketseng.

Ka lehlakoreng le leng ho ba bang fumaneha dithulaganyo electrostatic karohano, le triboelectrostatic lebanta kgaoganyo e sebakeng se loketseng loketseng bakeng sa karohano ea e ntle haholo (<1 μm) ho tekano mahoashe (300μm) thepa le throughputs phahameng haholo. The triboelectric phatsa tjhaja ke e atlehang bakeng sa mefuta e fapaneng ya mefuta e ea thepa e le feela hloka phatsa - phatsa o ikopanye. Lekhalo nyane, phahameng tšimo motlakase, loantša phallo jwale, matla phatsa-phatsa pherekano le ho intša ho hloekisa bohato ba lebanta le ka li-electrode ho ba likarolo tse mahlonoko tseo tsa kgaoganyo ho. The phahameng bokgoni selotlolo sethaleng karohano ka lefisa / recharging le diphetho hare recycle ka karohano phahametseng hōle ebile e ka thepa e metle o ke keng oa aroloa ho hang ke mekhoa tloaelehileng.

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Dikopo OF TRIBOELECTROSTATIC pásek arohane

fofa Ash

The triboelectrostatic thekenoloji lebanta karohano ile la pele e sebelisoa industrially ho e lokisa ya mashala combustion e fofa molora ka 1995. Bakeng sa fofa molora kopo, theknoloji e bile a atleha ho arola likaroloana k'habone ho tswa ho go tuka ga molelo fella oa mashala, ho tswa ho le kang khalase le likaroloana aluminosilicate matsoai ka fofa molora. theknoloji e bile phetha karolo nolofalletsa recycle tsa flyash matsoai e ngata ka Phetolo samente tlhahiso ka konkreiti. Ho tloha 1995, 19 triboelectrostatic lebanta separators di sebetsa ka USA, Canada, UK, le Poland, sebetsana fetang 1,000,000 tonnes tsa fofa molora selemo le selemo. thekenoloji ke hona joale e boetse e ka Asia le kgaoganyo pele hlomamisa ka Korea Boroa selemong sena. Histori liindasteri tsa karohano fofa molora e ngotsweng Lethathamo 1.

tafole 3. mehlala, karohano matsoai sebelisa triboelectrostatic lebanta karohano

Tshebediso ya triboelectrostatic lebanta kgaoganyo e se e bontšitse hore tsela e atlehang beneficiate metsoako ngata matsoai. Ho tloha kgaoganyo ka sebetsa thepa le boholo bo phatsa ho tloha ka 300 μm ho ka tlase ho 1 μm, le karohano triboelectrostatic ke e atlehang bakeng sa bobeli li sireletsang serameng le thepa conductive, theknoloji e haholo ho fetela le ho mefuta e fapaneng ya lintho tse bonahalang ho hlokehang fetang tloaelehileng separators electrostatic. Ho tloha ka tshebetso triboelectrostatic e ommeng ka ho feletseng, tshebediso ya ho felisa ho hlokahala hore omisa lintho tse bonahalang le ho tshwara mokelikeli litšila ho tswa dithulaganyo flotation.

HO TEFO OF TRIBOELECTROSTATIC pásek arohane

Papiso ho tloaelehileng Flotation bakeng Barite

A ho ithuta theko bapisang a ne a laeloa ke STET le entsoeng ke Soutex Inc. Soutex ke Quebec Canada thehiloeng boenjiniere le khampani le boiphihlelo e pharaletseng ka bobeli metsi flotation le electrostatic karohano thulaganyou e sekasekale le moralo. ho ithuta ho bapisoa le motse-moholo 'me a sebelisa mehaho ditshenyehelo tsa triboelectrostatic thulaganyou e lebanta karohano ho tloaelehileng froth flotation bakeng sa beneficiation a tlaase sehlopheng barite manya. theknoloji e bobeli ntlafatsa ho barite ke tlosa tlaase segokanyipalo-butle, haholo-holo quartz, ho hlahisa American Petroleum Institute (API) cheka sehlopheng barite le SG moholo ho feta 4.2 g, / ml tse. diphetho Flotation ne e thehiloeng lithuto tsa motsamaisi dimela khanna ke Indian National Mettalurgical laboratori "NML (2004)". diphetho karohano Triboelectrostatic lebanta li ne li thehiloe ho lithuto tsa motsamaisi dimela sebelisa tšoanang fepa ka tšepe. Thuto ea bapisang a moruo kenyelleditswe ntshetsopeleng flowsheet, lintho tse bonahalang le matla sekaleng, thepa kgolo moleposelekanyi le khotheishene ya bobeli flotation le triboelectrostatic dithulaganyo lebanta karohano. Motheo oa flowsheets bobeli ke e tšoanang, sebetsa 200,000 sa t / featswan ya fepa ka barite le SG 3.78 ho hlahisa 148,000 sa t / featswan tsa cheka sehlopheng barite sehlahisoa le SG 4.21 g, / ml tse. The flotation thulaganyou e hakanya hore ba ne ba sa kenyeletsa ditjeo efe kapa efe ya thulaganyou e metsi, kapa kalafo metsi.

Flowsheets ne generated ka Soutex bakeng sa barite thulaganyou e flotation (Figure 6), le triboelectrostatic lebanta thulaganyou e karohano (Figure 7).

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Figure 6 Barite flotation thulaganyou e flowsheet

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Figure 7 Barite triboelectrostatic lebanta karohano thulaganyou e flowsheet

Litletlebo tsa flowsheets se kenyeletsa tsamaiso tala manya sithabetsa, e leng ke ho tloaelehile hore ho theknoloji e bobeli. Feed sila bakeng sa ha e flotation e finyeletseng ho sebedisa metsi makhasi ao bolo leloala le leholiotsoana classifier. Feed sila bakeng sa triboelectrostatic hlahletsoe nyeoe lebanta karohano e finyelloa sebelisa omileng, paatsepama rolara leloala le ea bohlokoa e matla classifier.

The triboelectrostatic lebanta karohano flowsheet ke bonolo ho feta flotation. Triboelectostatic lebanta karohano e fihlellwa ka sethaleng e le 'ngoe ntle le go tlaleletsa ka reagents lik'hemik'hale efe kapa efe, bapisoa le tse tharo-sethaleng flotation le asiti oleic sebelisoa e le 'mokelli oa bakeng sa barite le sodium metaborate ka depressant bakeng sa gangue silica. flocculant A o boetse o phaella ka ho re e le reagent bakeng sa thickening tabeng barite flotation. Ha ho dewatering le omisa thepa e hlokahalang bakeng sa triboelectrostatic lebanta karohano, bapisoa thickeners, filtara mechine, le oa rotary dryers hlokehang bakeng sa ho barite thulaganyou e flotation.

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