Anatsegula Mapulogalamu mu kuuma Triboelectric Kupatukana ya Mchere

Anatsegula Mapulogalamu mu kuuma Triboelectric

Kulekana kwa Mchere

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

cha ku Switzerland Zida & Technology LLC, Needham Massachusetts 02494 USA

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

Mkota

cha ku Switzerland Zida & Technology, LLC (STET) zachitika dongosolo processing zochokera triboelectrostatic lamba kulekana amene amapereka makampani mchere processing njira beneficiate zipangizo zabwino ndi luso kwathunthu youma. Mosiyana ndi zina njira electrostatic kulekana amene amagwiritsidwa okha particles kuposa 75μm kukula, ndi triboelectric lamba olekanitsa ndi oyenereradi kupatukana ya chabwino kwambiri (<1μm) kuti amtengo coarse (300μm) particles ndi matulukidwe kwambiri. Mkulu Mwachangu Mipikisano gawo kulekana kudzera adzapereke mkati / recharging ndi akonzanso zotsatira kusiyana kwambiri kuposa kuti chingapezeke ndi ochiritsira umodzi gawo Tiyeni tiziyesetsa kugwa triboelectrostatic olekanitsa. The triboelectric lamba olekanitsa luso lakhala likugwiritsidwa ntchito kupatukana osiyanasiyana zipangizo kuphatikizapo zosakaniza aluminosilicates kunyezimira / mpweya, calcite / khwatsi, talc / magnesite, ndipo barite / khwatsi. An poyerekeza chuma pogwiritsa ntchito triboelectrostatic lamba kulekana motsutsana ochiritsira flotation kwa barite / khwatsi kulekana zikusonyeza ubwino processing youma mchere.

Keywords: mchere, kulekana youma, barite, triboelectrostatic adzapereke, lamba olekanitsa, kuuluka phulusa

MAU OYAMBA

Chosowa kupeza madzi abwino wayamba mfundo yaikulu zokhudza kuthekera ntchito migodi padziko lonse. Malinga ndi Hubert Fleming, poyamba wotsogolera padziko lonse zimaswa Water, "Mwa ntchito zonse migodi mu dziko kuti mwina utaleka kapena mochedwa pa chaka chathachi, zinali, pafupifupi 100% la milandu, chifukwa cha madzi, kaya mwachindunji kapena ayi "Blin (2013). Youma njira mchere processing kupereka yankho pabvuto ili imene yatsala.

kulekana njira yonyowa monga froth flotation amafuna Kuwonjezera reagents mankhwala kuti ayenera kugwiridwa bwinobwino ndi kuwataya bwino kwambiri zachilengedwe udindo. Amatipeza sikutheka ntchito ndi 100% akonzanso madzi, zofuna kutaya osachepera gawo la madzi ndondomeko, mwina munali kufufuza ndalama za reagents mankhwala.

njira youma monga kulekana electrostatic adzachotsa kufunika madzi abwino, ndi kupereka lingathe kuchepetsa. Chimodzi mwa zingamuthandize zinthu zatsopano kusiyana youma mchere ndi triboelectrostatic lamba olekanitsa. Njira imeneyi wandisonyeza ndi tinthu kukula osiyanasiyana kuti bwino particles kuposa ochiritsira umisiri electrostatic kulekana, mu uthunthu yekha flotation wakhala bwino m'mbuyomu.

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chithunzi 2. Tsatanetsatane wa zone kulekana

ndondomeko ndi youma kwathunthu, amafuna palibe zipangizo zina ndipo pomaliza palibe madzi zinyalala kapena mpweya mpweya. Pankhani ya mpweya ku ntchentche amapatukana phulusa, zipangizo anachira zigwirizana ntchentche phulusa yafupika zili mpweya kuchepetsa oyenera ntchito ngati kusakanizikana pozzolanic auzidwa, ndi mkulu mpweya kachigawo amene angathe awotchedwe magesi ikuyambitsa chomera. Magwiritsidwe mitsinje mankhwala onse imapereka 100% njira kuuluka mavuto phulusa nazo.

The triboelectrostatic lamba olekanitsa zimakhalanso yaying'ono. A makina cholinga pokonza 40 tonnes paola pafupifupi 9.1 meters (30 Ft) yaitali, 1.7 meters (5.5 ft.) lonse ndi 3.2 meters (10.5 ft.) mkulu. Chofunika bwino chomera tichipeza machitidwe kusonyeza zinthu ouma ndi ku olekanitsa ndi. The compactness a dongosolo limalola kusinthasintha ziwembu unsembe.

chithunzi 3. Malonda triboelectrostatic lamba olekanitsa

Poyerekezera ndi njira zina electrostatic kulekana

The triboelectrostatic luso lamba kulekana kwambiri zambiri osiyanasiyana zipangizo kuti akhoza beneficiated mwa njira electrostatic. The zambiri ntchito njira electrostatic kudalira kusiyana kwa madutsidwe magetsi zipangizo kuti anapambulwa. Mu njira izi, chuma ayenera funsani ndi ng'oma otsendereka kapena mbale ambiri pambuyo particles zakuthupi ndi zoipa mlandu ndi ionizing kuŵala kwa m'mlengalenga kumaliseche. zipangizo conductive adzautaya akuwayang'anira mofulumira ndi adzaponyedwa ku ng'oma ndi. zakuthupi si conductive akupitirizabe anakopeka ng'oma kuyambira

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kuyang'anira kudzatha pang'onopang'ono ndipo idzagwa kapena akukankhira kwa ng'oma pambuyo kulekana ndi chuma kuchititsa. pasukuluyi zocheperapo mphamvu chifukwa kukhudzana zinafunika aliyense tinthu kwa ng'oma kapena mbale. Mphamvu ya izi pokhudzana nawuza njira amagwiritsidwa okha particles pafupifupi 100 μm wamkulu kukula chifukwa chosowa onse kulankhula ndi mbale, ochirimika ndi chofunika mphamvu otaya tinthu. Tinthu zamitundu yosiyanasiyana nawonso mphamvu osiyana otaya chifukwa zotsatira inertial chingandithandize kupatukana kuzichepetsa. Chithunzi otsatirawa (chithunzi 4) chikusonyeza mbali yofunika ya mtundu wa olekanitsa.

chithunzi 4. Drum electrostatic olekanitsa "Mkulu (2003)"

Kulekanitsidwa Triboelectrostatic suthera kulekana kwa conductive / zipangizo sanali conductive koma zimadalira chodabwitsa chodziwika bwino mlandu kutengerapo ndi kukhudzana frictional zipangizo ndi umagwirira yosiyana pamwamba. zodabwitsazi lakhala likugwiritsidwa ntchito "ufulu kugwa" njira kulekana kwa zaka zambiri. ndondomeko otere taphunzira Chithunzi 5. Zigawo za chisakanizo cha particles woyamba kukhala milandu osiyana ndi kukhudzana mwina pamwamba zitsulo, kapena ndi tinthu kuti tinthu kukhudzana mu fluidized chipangizo bedi kudya. Monga particles kugwa kupyola mmunda magetsi mu zone elekitirodi, njira yodutsamo aliyense tinthu ali anapanduka kwa elekitirodi mlandu popenyana. Pambuyo mtunda wina, zosonkhanitsira bins ntchito kupatutsa madzi. makhazikitsidwe Chitsanzo amafuna magawo angapo olekanitsa ndi akonzanso wa kachigawo middling. Ena zipangizo ntchito mtsinje azilandira mpweya kuthandiza kupereka kwa particles mwa zone elekitirodi.

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chithunzi 5. "Free kugwa" triboelectrostatic olekanitsa

Mtundu wa ufulu kugwa olekanitsa komanso ali ndi zofooka mu tinthu kukula kwa zida zimene angathe kukonzedwa. The otaya mu zone elekitirodi ziyenera kulamulidwa kuchepetsa kugwedezekagwedezeka kupewa "Kupaka" olekanitsa ndi. The njira yodutsamo wa particles yabwino kwambiri kunatheka chifukwa cha kugwedezekagwedezeka kuyambira kuuluka bwino potsatira njira kukoka mphamvu tinthu zabwino ndi yokulirapo kuposa mphamvu yokoka ndi electrostatic. The particles chabwino kwambiri adzakhala amakonda kusonkhanitsa pa kali elekitirodi ndi ayenera kuchotsedwa ndi njira zina. Particles zosakwana 75 μm sangathe bwino olekanitsidwa.

malire wina ndi kuti tinthu potsegula mu zone elekitirodi ayenera kukhala otsika kupewa zotsatira malo kuyang'anira, amene chepetsani mlingo processing. Kudutsa zinthu mwa zone elekitirodi analandira zimachititsa kulekana umodzi gawo, popeza palibe kuthekera kwa kukonzanso adzapereke kwa particles. Choncho, kachitidwe Mipikisano gawo zifunika kwa kuwongolera mlingo wa kulekanitsidwa kuphatikizapo kukonzanso adzapereke kwa chuma ndi kukhudzana wotsatira ndi chipangizo nawuza. The chifukwa zipangizo buku ndi kuvuta ukuwonjezeka mogwirizana.

Mosiyana ndi zina njira electrostatic kulekana, ndi triboelectrostatic lamba olekanitsa ndi oyenereradi kupatukana ya chabwino kwambiri (<1 μm) kuti amtengo coarse (300μm) zipangizo ndi throughputs kwambiri. The triboelectric tinthu adzapereke ndi zothandiza osiyanasiyana zipangizo ndi chokha amafuna tinthu - tinthu kukhudzana. Kusiyana ang'onoang'ono, mkulu munda magetsi, kutsutsa otaya panopa, wolimba tinthu-tinthu mukubwadamuka ndi kudzikonda kuyeretsa kanthu lamba pa maelekitirodi ndi mbali yapadera ya olekanitsa ndi. Mkulu Mwachangu Mipikisano gawo kulekana kudzera nawuza / recharging ndi zotsatira mkati akonzanso mu amapatukana kwambiri kuposa ndi othandiza pa zipangizo zabwino zimene zimakhudza konse mwa njira ochiritsira.

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Ntchito TRIBOELECTROSTATIC lamba KUPATUKANA

ntchentche Ash

The triboelectrostatic luso lamba kulekana anali woyamba ntchito m'mafakitale kwa processing wa malasha kuyaka ntchentche phulusa mu 1995. Pakuti ntchentche phulusa ntchito, luso athandiza mu kulekanitsa particles mpweya ku kuyaka chosakwanira wa malasha, kuchokera kunyezimira particles aluminosilicate mchere mu ntchentche phulusa. luso lathandiza kwambiri kuwapangitsa akonzanso wa flyash mchere wolemera mmalo simenti kupanga konkire. Popeza 1995, 19 triboelectrostatic lamba separators zakhala zikugwira ntchito mu USA, Canada, UK, ndi Poland, processing pa 1,000,000 tonnes wa ntchentche phulusa chaka. umisiri ndi tsopano mu Asia ndi olekanitsa woyamba kuikidwa Korea South chaka chino. Mbiri mafakitale kulekana ntchentche phulusa kutchulidwa mu Table 1.

Table 3. zitsanzo, Kulekanitsidwa mchere ntchito triboelectrostatic lamba kulekana

Ntchito triboelectrostatic lamba olekanitsa wasonyeza kuti bwino beneficiate zosakaniza ambiri mchere. Popeza olekanitsa akhoza pokonza zipangizo ndi makulidwe tinthu kuyambira 300 μm kuti zosakwana 1 μm, ndi kulekana triboelectrostatic othandiza kwa onse zokutira zitsulo ndiponso zipangizo conductive, luso kwambiri chimafikira osiyanasiyana chuma applicable pa ochiritsira separators electrostatic. Popeza ndondomeko triboelectrostatic youma kwathunthu, kuligwiritsa ntchito kumatha kufunika kuyanika zinthu ndi kulipira madzi zinyalala ku njira flotation.

Mtengo wa TRIBOELECTROSTATIC lamba KUPATUKANA

Poyerekezera ochiritsira asamire kwa Barite

Kafukufuku mtengo poyerekeza atatumidwa ndi STET ndi kumulondolera ndi Soutex Inc. Soutex ndi Quebec Canada zochokera zomangamanga kampani agwira mu yonyowa flotation ndi electrostatic kupatukana ndondomeko kuwunika ndi kapangidwe. phunziro poyerekeza likulu ndi opaleshoni ndalama triboelectrostatic ndondomeko lamba kulekana kwa ochiritsira froth flotation kwa beneficiation wa wozama kalasi barite miyalayo. umisiri onse Sinthani ndi barite ndi kuchotsa otsika kachulukidwe zolimba, makamaka khwatsi, kupereka American Mafuta Institute (API) pobowola kalasi barite ndi SG woposa 4.2 g / ml ya. Zotsatira asamire zinali zochokera maphunziro woyendetsa chomera ochitidwa ndi Indian National Mettalurgical Laboratory "NML (2004)". Zotsatira kulekana Triboelectrostatic lamba anali zochokera maphunziro woyendetsa chomera ntchito zofanana chakudya ores. Phunziro poyerekeza zachuma m'gulu chitukuko flowsheet, chuma ndi mphamvu sikelo, zida zikuluzikulu sizing ndi ogwidwawo onse flotation ndi triboelectrostatic njira lamba kulekana. Maziko flowsheets onse ali yemweyo, processing 200,000 T / Y chakudya barite ndi SG 3.78 kutulutsa 148,000 T / Y wa pobowola kalasi barite mankhwala ndi SG 4.21 g / ml ya. The flotation ndondomeko Chiyerekezo sanalembe mtengo uliwonse kwa ndondomeko madzi, kapena madzi mankhwala.

Flowsheets anali kwaiye Soutex kwa barite ndondomeko flotation (chithunzi 6), ndipo triboelectrostatic lamba ndondomeko kulekana (chithunzi 7).

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chithunzi 6 Barite flotation ndondomeko flowsheet

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chithunzi 7 Barite triboelectrostatic lamba kupatukana ndondomeko flowsheet

Mfundozo flowsheets sakuphatikizapo dongosolo yaiwisi miyala onongani, omwe si zachilendo umisiri onse. Chakudya akupera pa nkhani flotation kukakwaniritsa ntchito chonyowa zamkati mpira mphero ndi chimphepochi classifier. Chakudya akupera kwa triboelectrostatic mlandu lamba kulekana kukakwaniritsa ntchito youma, ofukula wodzigudubuza mphero ndi yofunika zazikulu classifier.

The triboelectrostatic lamba kulekana flowsheet wosalira kuposa flotation. Triboelectostatic lamba kulekana zimatheka mu gawo limodzi popanda Kuwonjezera reagents mankhwala aliwonse, poyerekeza ndi atatu gawo flotation acid oleic ntchito ngati wokhometsa kwa barite ndi sodium wochuluka silicate monga nkhawa kuti gangue silika. flocculant ali anawonjezera monga reagent kwa thickening pa nkhani barite flotation. No dewatering ndi kuyanika zida chofunika kwa triboelectrostatic lamba kulekana, poyerekeza thickeners, fyuluta makina, ndi makina dryers wofunikila barite ndondomeko flotation.

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