Nakong ea "Leano la Lilemo tse Hlano la 14", ho ea ka leano la leano la "carbon peak le carbon neutral", indasteri ea photovoltaic e tla lebisa nts'etsopele ea ho phatloha. Ho qhoma ha indasteri ea photovoltaic ho "bōpile leruo" bakeng sa ketane eohle ea indasteri. Ka ketane ena e khanyang, khalase ea photovoltaic ke sehokelo sa bohlokoa. Kajeno, ho buella tlhokomelo ea matla le tšireletso ea tikoloho, tlhokahalo ea khalase ea photovoltaic e ntse e eketseha letsatsi le letsatsi, 'me ho na le ho se leka-lekane pakeng tsa phepelo le tlhokahalo. Ka nako e ts'oanang, lehlabathe la quartz le nang le tšepe e tlaase le ultra-white, thepa ea bohlokoa bakeng sa khalase ea photovoltaic, le eona e tsohile, 'me theko e eketsehile' me phepelo e haella. Litsebi tsa indasteri li bolela esale pele hore lehlabathe la quartz ea tšepe e tlase le tla ba le keketseho ea nako e telele ho feta 15% ka lilemo tse fetang 10. Tlas'a moea o matla oa photovoltaic, tlhahiso ea lehlabathe la quartz e tlaase ea tšepe e khahlile haholo.
1. Lehlabathe la quartz bakeng sa khalase ea photovoltaic
Khalase ea photovoltaic hangata e sebelisoa e le karolo ea encapsulation ea li-module tsa photovoltaic, 'me e amana ka ho toba le tikoloho e ka ntle. Ho hanyetsa boemo ba eona ba leholimo, matla, phetisetso ea leseli le matšoao a mang a phetha karolo ea bohlokoa bophelong ba li-module tsa photovoltaic le katleho ea nako e telele ea ho hlahisa matla. Li-ion tsa tšepe tse ka lehlabatheng la quartz li bonolo ho daea, 'me e le ho etsa bonnete ba hore khanya e phahameng ea letsatsi ea khalase ea pele, karolo ea tšepe ea khalase ea photovoltaic e tlase ho feta ea khalase e tloaelehileng, le lehlabathe la quartz le tlaase le nang le bohloeki bo phahameng ba silicon. 'me ho tlameha ho sebelisoe litšila tse fokolang.
Hajoale, ho na le mahlabathe a 'maloa a boleng bo tlase ba quartz ea tšepe eo ho leng bonolo ho e rafa naheng ea rona,' me a ajoa haholo Heyuan, Guangxi, Fengyang, Anhui, Hainan le libakeng tse ling. Nakong e tlang, ka kholo ea matla a tlhahiso ea likhalase tse khabisitsoeng ka bosoeu bakeng sa lisele tsa letsatsi, lehlabathe la boleng bo phahameng ba quartz le sebaka se fokolang sa tlhahiso e tla fetoha mohloli o batlang o fokola. Phepelo ea lehlabathe la quartz ea boleng bo phahameng le e tsitsitseng e tla thibela tlhōlisano ea lik'hamphani tsa khalase ea photovoltaic nakong e tlang. Ka hona, mokhoa oa ho fokotsa ka katleho litaba tsa tšepe, aluminium, titanium le likarolo tse ling tse sa hloekang ka lehlabatheng la quartz le ho lokisetsa lehlabathe la quartz le hloekileng haholo ke sehlooho se chesang sa lipatlisiso.
2. Ho hlahisa lehlabathe la quartz le tlaase bakeng sa khalase ea photovoltaic
2.1 Ho hloekisoa ha Lehlabathe la Quartz bakeng sa Khalase ea Photovoltaic
Hajoale, lits'ebetso tsa moetlo tsa tlhoekiso ea quartz tse sebelisoang indastering li kenyelletsa ho hlopha, ho hohla, ho tima metsi a calcination, ho sila, ho sila, karohano ea matla a khoheli, karohano ea matla a khoheli, flotation, leaching acid, microbial leaching, degassing e phahameng ea mocheso, joalo-joalo. tlhoekiso e tebileng Mehato e kenyelletsa ho besoa ka chlorine, ho hlopha mebala e hlabositsoeng, ho hlopha matla a khoheli a matla, vacuum e phahameng ea mocheso joalo-joalo. Ts'ebetso e akaretsang ea melemo ea tlhoekiso ea lehlabathe la quartz ea malapeng e boetse e ntlafalitsoe ho tloha qalong ea "ho sila, karohano ea matla a khoheli, ho hlatsoa" ho isa "karohano → ho sithabela ho hoholo → calcination → ho tima metsi → ho sila → skrini → karohano ea makenete → flotation → asiti Ts'ebetso e kopaneng ea melemo ho qoelisoa → ho hlatsoa→ ho omisa, ho kopantsoe le microwave, ultrasonic le mekhoa e meng bakeng sa phekolo ea pele kapa ho hloekisa ka ho thusa, ho ntlafatsa haholo phello ea tlhoekiso. Ka lebaka la litlhoko tse tlaase tsa tšepe tsa khalase ea photovoltaic, lipatlisiso le nts'etsopele ea mekhoa ea ho tlosa lehlabathe la quartz li hlahisoa haholo-holo.
Ka kakaretso tšepe e teng ka mefuta e tšeletseng e tloaelehileng ea ore ea quartz:
① E teng ka sebopeho sa likaroloana tse ntle tsa letsopa kapa kaolinized feldspar
②E khomaretsoe holim'a likaroloana tsa quartz ka sebopeho sa filimi ea iron oxide
③ Liminerale tsa tšepe tse kang hematite, magnetite, specularite, qinite, joalo-joalo kapa liminerale tse nang le tšepe tse kang mica, amphibole, garnet, joalo-joalo.
④E boemong ba ho qoelisoa kapa lense ka har'a likaroloana tsa quartz
⑤ E teng boemong ba tharollo e tiileng ka hare ho kristale ea quartz
⑥ Palo e itseng ea tšepe ea bobeli e tla kopanngoa nakong ea ho sila le ho sila
Ho arola ka katleho liminerale tse nang le tšepe ho tloha quartz, hoa hlokahala ho qala ka ho netefatsa boemo ba ts'ilafalo ea tšepe ka har'a ore ea quartz le ho khetha mokhoa o utloahalang oa ho rua molemo le mokhoa oa ho arohana ho finyella ho tlosoa ha litšila tsa tšepe.
(1) Ts'ebetso ea karohano ea makenete
Ts'ebetso ea ho arohana ha makenete e ka tlosa liminerale tse fokolang tse sa hloekang tsa makenete tse kang hematite, limonite le biotite ho kenyelletsa likaroloana tse kopaneng ho isa tekanyong e kholo. Ho ea ka matla a khoheli, karohano ea makenete e ka aroloa ka karohano e matla ea makenete le karohano e fokolang ea makenete. Karohano e matla ea makenete hangata e nka karohano e matla ea makenete e metsi kapa karohano e phahameng ea matla a makenete.
Ka kakaretso, lehlabathe la quartz le nang le liminerale tse fokolang haholo tse sa hloekang tsa makenete tse kang limonite, hematite, biotite, joalo-joalo, li ka khethoa ho sebelisoa mochine o matla oa makenete oa mofuta o metsi ka boleng bo ka holimo ho 8.0 × 105A/m; Bakeng sa liminerale tse matla tsa makenete tse laoloang ke tšepe ea tšepe, ho molemo ho sebelisa mochini o fokolang oa makenete kapa mochini oa makenete o mahareng bakeng sa karohano. [2] Matsatsing ana, ka ts'ebeliso ea li-separator tse matla tsa matla a khoheli a matla a khoheli, karohano ea makenete le tlhoekiso li ntlafalitsoe haholo ha li bapisoa le tsa khale. Ka mohlala, ho sebelisa mochine oa motlakase oa motlakase oa motlakase oa motlakase ho tlosa tšepe tlas'a matla a khoheli a 2.2T ho ka fokotsa litaba tsa Fe2O3 ho tloha ho 0.002% ho ea ho 0.0002%.
(2) Mokhoa oa ho phaphamala
Flotation ke mokhoa oa ho arola likaroloana tsa liminerale ka thepa e fapaneng ea 'mele le ea lik'hemik'hale holim'a likaroloana tsa liminerale. Mosebetsi o ka sehloohong ke ho tlosa mineral mica e amanang le feldspar lehlabatheng la quartz. Bakeng sa karohano ea flotation ea liminerale tse nang le tšepe le quartz, ho fumana mofuta oa ketsahalo ea litšila tsa tšepe le mofuta oa kabo ea boholo ba karoloana ke senotlolo sa ho khetha mokhoa o nepahetseng oa karohano bakeng sa ho tlosoa ha tšepe. Liminerale tse ngata tse nang le tšepe li na le ntlha ea motlakase ea zero ka holimo ho 5, e qosoang hantle sebakeng se nang le asiti, 'me ka khopolo e loketse tšebeliso ea babokelli ba anionic.
Mafura a mafura (sesepa), hydrocarbyl sulfonate kapa sulfate e ka sebelisoa e le pokello ea anionic bakeng sa ho phaphamala ha ore ea tšepe ea oxide. Pyrite e ka ba ho phaphamala ha pyrite ho tloha quartz sebakeng sa pickling le moemeli oa khale oa flotation bakeng sa isobutyl xanthate hammoho le butylamine phofo e ntšo (4: 1). Tekanyetso e ka ba 200ppmw.
Ho phaphamala ha ilmenite ka kakaretso ho sebelisa sodium oleate (0.21mol/L) e le ntho ea ho phaphamala ho fetola pH ho 4 ~ 10. Karabelo ea lik'hemik'hale e etsahala pakeng tsa li-ion tsa oleate le likaroloana tsa tšepe tse holim'a ilmenite ho hlahisa oleate ea tšepe, e nang le lik'hemik'hale tsa Oleate ions li boloka ilmenite ka ho phaphamala ho molemo. Babokelli ba hydrocarbon-based phosphonic acid ba ntlafalitsoeng lilemong tsa morao tjena ba na le khetho e ntle le ts'ebetso ea pokello bakeng sa ilmenite.
(3) Mokhoa oa ho ntša asiti
Sepheo se seholo sa ts'ebetso ea acid leaching ke ho tlosa liminerale tsa tšepe tse qhibilihang ka har'a tharollo ea asiti. Lintlha tse amang phello ea tlhoekiso ea acid leaching li kenyelletsa boholo ba lehlabathe la quartz, mocheso, nako, mofuta oa asiti, khatello ea asiti, karo-karolelano ea metsi a tiileng, joalo-joalo, le ho eketsa mocheso le tharollo ea asiti. Ho tsepamisa mohopolo le ho fokotsa radius ea likaroloana tsa quartz ho ka eketsa sekhahla sa leaching le sekhahla sa leaching sa Al. Phello ea ho hloekisa acid e le 'ngoe e lekanyelitsoe,' me acid e tsoakiloeng e na le phello ea synergistic, e ka eketsang haholo tekanyo ea ho tlosoa ha lintho tse sa hloekang tse kang Fe le K. Li-inorganic acid tse tloaelehileng ke HF, H2SO4, HCl, HNO3, H3PO4, HClO4 , H2C2O4, ka kakaretso tse peli kapa ho feta tsa tsona lia tsoakoa 'me li sebelisoa ka tekanyo e itseng.
Oxalic acid ke e 'ngoe ea li-acid tse sebelisoang hangata bakeng sa ho ntša acid. E ka etsa motsoako o batlang o tsitsitse ka li-ion tsa tšepe tse qhibilihisitsoeng, 'me litšila li hlatsuoa habonolo. E na le melemo ea tekanyo e tlase le sekhahla se phahameng sa ho tlosoa ha tšepe. Batho ba bang ba sebelisa ultrasound ho thusa ho hloekisoa ha oxalic acid, 'me ba fumane hore ha ba bapisoa le mokhoa o tloaelehileng oa ho tsosoa le tanka ea ultrasound, probe ultrasound e na le tekanyo e phahameng ka ho fetisisa ea ho tlosa Fe, palo ea oxalic acid e ka tlaase ho 4g/L, le sekhahla sa ho tlosoa ha tšepe se fihla. 75.4%.
Boteng ba acid e hlapollang le hydrofluoric acid e ka tlosa litšila tsa tšepe tse kang Fe, Al, Mg ka katleho, empa palo ea asiti ea hydrofluoric e tlameha ho laoloa hobane hydrofluoric acid e ka senya likaroloana tsa quartz. Tšebeliso ea mefuta e sa tšoaneng ea li-acids e boetse e ama boleng ba mokhoa oa ho hloekisa. Har'a bona, acid e tsoakiloeng ea HCl le HF e na le phello e ntle ka ho fetisisa ea ho sebetsa. Batho ba bang ba sebelisa HCl le HF motsoako oa leaching agent ho hloekisa lehlabathe la quartz ka mor'a karohano ea makenete. Ka leaching ea lik'hemik'hale, kakaretso ea likarolo tse sa hloekang ke 40.71μg / g, 'me bohloeki ba SiO2 bo phahame ho feta 99.993wt%.
(4) Leaching ea likokoana-hloko
Likokoana-hloko li sebelisetsoa ho ntša tšepe e tšesaane ea filimi kapa tšepe e kenyang holim'a likaroloana tsa lehlabathe la quartz, e leng mokhoa o sa tsoa etsoa oa ho ntša tšepe. Liphuputso tse tsoang linaheng tse ling li bontšitse hore tšebeliso ea Aspergillus niger, Penicillium, Pseudomonas, Polymyxin Bacillus le likokoana-hloko tse ling ho leaching tšepe holim'a filimi ea quartz e fumane liphello tse ntle, tseo phello ea Aspergillus niger leaching iron optimal. Sekhahla sa ho tlosoa ha Fe2O3 hangata se ka holimo ho 75%, 'me sehlopha sa Fe2O3 concentrate se tlaase ho 0.007%. 'Me ho ile ha fumanoa hore phello ea leaching tšepe le pele ho lengoa libaktheria tse ngata le hlobo e ka ba molemo.
2.2 Tsoelo-pele ea lipatlisiso tsa lehlabathe la quartz bakeng sa khalase ea photovoltaic
E le ho fokotsa bongata ba asiti, ho fokotsa bothata ba ho hloekisa likhoerekhoere, 'me u be le botsoalle ba tikoloho, Peng Shou [5] et al. e senotse mokhoa oa ho lokisa lehlabathe la quartz la 10ppm ka mokhoa o sa khaoleheng: quartz ea tlhaho ea vein e sebelisoa e le thepa e tala, le ho sila ka mekhahlelo e meraro, Mokhahlelo oa pele oa ho sila le sehlopha sa bobeli se ka fumana grit ea 0.1 ~ 0.7mm ; grit e arotsoe ke mohato oa pele oa karohano ea makenete le mohato oa bobeli oa ho tlosoa ka matla ha makenete ea tšepe ea mochini le liminerale tse nang le tšepe ho fumana lehlabathe la karohano ea makenete; karohano ea makenete ea lehlabathe e fumanoa ke mohato oa bobeli oa flotation Fe2O3 content e tlase ho feta 10ppm low- iron quartz sand, flotation e sebelisa H2SO4 e le regulator, e lokisa pH = 2 ~ 3, e sebelisa sodium oleate le kokonate oli e thehiloeng propylene diamine e le babokelli. . Lehlabathe le lokiselitsoeng la quartz SiO2≥99.9%, Fe2O3≤10ppm, le finyella litlhoko tsa lisebelisoa tse tala tsa siliceous tse hlokahalang bakeng sa khalase ea optical, khalase ea pontšo ea photoelectric, le khalase ea quartz.
Ka lehlakoreng le leng, ka ho fokotseha ha lisebelisoa tsa boleng bo phahameng ba quartz, tšebeliso e pharaletseng ea lisebelisoa tse tlaase e khahlile tlhokomelo e atileng. Xie Enjun oa China Building Materials Bengbu Glass Industry Design and Research Institute Co., Ltd. o sebelisitse mehatla ea kaolin ho lokisa lehlabathe la quartz ea tšepe e tlase bakeng sa khalase ea photovoltaic. Sebopeho se seholo sa liminerale tsa Fujian kaolin tailings ke quartz, e nang le liminerale tse nyenyane tse sa hloekang tse kang kaolinite, mica le feldspar. Ka mor'a hore mesalla ea kaolin e sebetsoe ke mokhoa oa beneficiation ea "grinding-hydraulic classification-magnetic separation-flotation", litaba tsa 0.6 ~ 0.125mm particle size e kholo ho feta 95%, SiO2 ke 99.62%, Al2O3 ke 0.065%, Fe2O3 ke 92 × 10-6 lehlabathe le letle la quartz le finyella litlhoko tsa boleng ba lehlabathe la quartz le tlaase bakeng sa khalase ea photovoltaic.
Shao Weihua le ba bang ho tsoa Setsing sa Zhengzhou sa Ts'ebeliso e Felletseng ea Mehloli ea Liminerale, Sechaena sa Academy of Geological Sciences, se phatlalalitse patent ea boqapi: mokhoa oa ho lokisa lehlabathe la quartz le hloekileng ho tloha mehatleng ea kaolin. Mekhoa ea mekhoa: a. Mehatla ea Kaolin e sebelisoa e le ore e tala, e hlokoang ka mor'a hore e tsosoe le ho hlatsuoa ho fumana thepa ea +0.6mm; b. + 0.6mm thepa e fatše 'me e arotsoe,' me lisebelisoa tsa 0.4mm0.1mm tsa karohano li tlas'a ts'ebetso ea karohano ea makenete, Ho fumana lisebelisoa tsa makenete le tseo e seng tsa makenete, lisebelisoa tse seng tsa makenete li kena ts'ebetsong ea karohano ea matla a khoheli ho fumana liminerale tse bobebe tsa karohano ea matla a khoheli. karohano ea matla a khoheli liminerale tse boima, 'me karohano ea liminerale tse bobebe tsa matla a khoheli li kena ts'ebetsong ea ho khutlisa skrineng ho fumana liminerale + 0.1mm; c + 0.1mm Morara o kena ts'ebetsong ea flotation ho fumana concentrate ea flotation. Metsi a ka holimo a flotation concentrate a tlosoa ebe a khethoa ka mokhoa oa ultrasonically, ebe a siloa ho fumana lisebelisoa tse mahoashe tsa +0.1mm e le lehlabathe la quartz le hloekileng. Mokhoa oa ho qaptjoa o ke ke oa fumana lihlahisoa tsa boleng bo phahameng ba quartz feela, empa hape o na le nako e khutšoanyane ea ts'ebetso, mokhoa o bonolo oa ho phalla, tšebeliso e tlaase ea matla, le boleng bo phahameng ba quartz concentrate, e ka finyellang litlhoko tsa boleng ba bohloeki bo phahameng. quartz.
Lithako tsa Kaolin li na le lisebelisoa tse ngata tsa quartz. Ka beneficiation, tlhoekiso le ts'ebetso e tebileng, e ka finyella litlhoko tsa tšebeliso ea lisebelisoa tse tala tsa khalase ea photovoltaic ultra-white. Sena se boetse se fana ka mohopolo o mocha oa ts'ebeliso e felletseng ea lisebelisoa tsa kaolin tailings.
3. Tlhaloso ea 'maraka ea lehlabathe la quartz le tlaase bakeng sa khalase ea photovoltaic
Ka lehlakoreng le leng, halofo ea bobeli ea 2020, matla a tlhahiso a thibetsoeng ka ho atoloha ha a khone ho sebetsana le tlhoko e phatlohileng tlas'a nala e phahameng. Phepelo le tlhoko ea khalase ea photovoltaic ha e lekane, 'me theko e ntse e phahama. Tlas'a pitso e kopanetsoeng ea lik'hamphani tse ngata tsa photovoltaic module, ka December 2020, Lekala la Indasteri le Theknoloji ea Boitsebiso le ile la fana ka tokomane e hlakisang hore morero oa khalase ea photovoltaic e kentsoeng e ka 'na ea se ke ea etsa moralo oa ho fetola bokhoni. E anngoe ke leano le lecha, sekhahla sa kholo ea tlhahiso ea khalase ea photovoltaic se tla atolosoa ho tloha 2021. Ho ea ka boitsebiso ba sechaba, bokhoni ba khalase ea photovoltaic e nang le moralo o hlakileng oa tlhahiso ka 21/22 e tla fihla ho 22250 / 26590t / d, e nang le sekhahla sa kholo ea selemo sa 68.4/48.6%. Tabeng ea litiiso tsa leano le tlhokahalo ea lehlakore, lehlabathe la photovoltaic le lebeletsoe hore le tlise khōlo e phatlohang.
2015-2022 bokhoni ba tlhahiso ea indasteri ea khalase ea photovoltaic
Ka lehlakoreng le leng, keketseho e kholo ea matla a tlhahiso ea khalase ea photovoltaic e ka etsa hore phepelo ea lehlabathe la silika ea tšepe e tlase e fete phepelo, e leng eona e thibelang tlhahiso ea 'nete ea matla a tlhahiso ea khalase ea photovoltaic. Ho ea ka lipalo-palo, ho tloha ka 2014, tlhahiso ea lehlabathe la quartz naheng ea heso ka kakaretso e bile tlase hanyane ho feta tlhoko ea lehae, 'me phepelo le tlhoko li bolokile tekano e tiileng.
Ka nako e ts'oanang, mehloli ea naha ea heso ea quartz placer placer e haella, e tsepamisitsoe Heyuan ea Guangdong, Beihai ea Guangxi, Fengyang ea Anhui le Donghai ea Jiangsu, 'me bongata ba bona bo hloka ho romelloa linaheng tse ling.
Lehlabathe la quartz le nang le tšepe e tlase le bosoeu ke e 'ngoe ea lisebelisoa tsa bohlokoa tse tala (e nkang karolo ea 25% ea litšenyehelo tsa thepa e tala) lilemong tsa morao tjena. Theko le eona e ntse e phahama. Nakong e fetileng, esale e le li-yuan tse 200 ka lithane ka nako e telele. Ka mor'a ho qhoma ha seoa sa Q1 ka lilemo tse 20, e theohile ho tloha boemong bo phahameng, 'me hona joale e ntse e boloka ts'ebetso e tsitsitseng ka nako eo.
Ka 2020, tlhoko ea naha ea heso ka kakaretso ea lehlabathe la quartz e tla ba lithane tse limilione tse 90.93, tlhahiso e tla ba lithane tse limilione tse 87.65, 'me kantle ho naha e tla ba lithane tse limilione tse 3.278. Ho ea ka boitsebiso ba sechaba, palo ea lejoe la quartz ka 100kg ea khalase e qhibilihisitsoeng e ka ba 72.2kg. Ho ea ka moralo oa hona joale oa katoloso, ho eketseha ha bokhoni ba khalase ea photovoltaic ka 2021/2022 ho ka fihla ho 3.23 / 24500t / d, ho ea ka tlhahiso ea selemo le selemo Ho baloa ka nako ea matsatsi a 360, tlhahiso eohle e tla lumellana le tlhokahalo e sa tsoa eketseha ea theko e tlaase. -iron silica sand ea lithane tse limilione tse 836/635 / selemo, ke hore, tlhokahalo e ncha ea lehlabathe la silika e tlaase e tlisoang ke khalase ea photovoltaic ka 2021/2022 e tla ikarabella bakeng sa lehlabathe la quartz ka kakaretso ka 2020 9.2% / 7.0% ea tlhokahalo . Ha ho nahanoa hore lehlabathe la silika la tšepe le tlaase le ikarabella feela bakeng sa karolo ea tlhokahalo ea lehlabathe la silika, phepelo le tlhokahalo ea khatello holim'a lehlabathe la silika la tšepe le bakoang ke matsete a maholo a matla a tlhahiso ea khalase ea photovoltaic e ka 'na ea e-ba holimo haholo ho feta khatello. indasteri ea lehlabathe la quartz ka kakaretso.
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Nako ea poso: Dec-11-2021