Bauxite Hmoovtshwm sim cov xim dawb lossis lub teeb txho, lub teeb ntsuab lossis lub teeb liab vim yog impurities. Iav luster, cleavage nto pearl luster. Pob tshab rau cov pob tshab. Tag nrho. Lub hardness ranges los ntawm 2.5 txog 3.5. Tus txheeb ze ntom ntom nti los ntawm 2.30 txog 2.43. Nws tsw nws tsw zoo li av nkos. Tsis muaj kob nyob rau hauv qab zib ncej. Qhov tseeb, nws hais txog lub sijhawm dav dav rau cov ores uas tuaj yeem siv rau hauv kev lag luam, tsuas yog tsim ntawm caj npab ntev hlau nplaum thiab feldspar. Bauxite yog qhov khoom siv raw zoo tshaj plaws rau txhuas ntau lawm thiab tseem muaj cov ntawv thov tseem ceeb tshaj plaws. Nws cov nyiaj tau los siv rau ntau tshaj 90% ntawm tag nrho cov khoom lag luam thoob ntiaj teb. Daim ntawv thov cov chaw muaj hlau thiab tsis yog hlau. Nws yog cov khoom siv raw rau kev ua cov khoom txhuas txhuas thiab tseem muaj daim ntawv thov tseem ceeb tshaj plaws. Nws cov nyiaj tau los siv rau ntau tshaj 90% ntawm tag nrho cov khoom lag luam thoob ntiaj teb. Bauxite Accounts rau ib qho kev faib ua feem me me hauv tsis {18 {}} nws cov hlau siv, tab sis yog siv dav. Siv rau kev tiv thaiv kev tiv thaiv hauv tebchaws, aviation, Automotive, hluav taws xob, tshuaj lom neeg, khoom siv txhua hnub, thiab lwm yam.
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Tshuaj Cov Qauv |
C2H4al2o |
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Muaj pes tsawg leej |
98 |
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Molecular hnyav |
98 |
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m/z |
98 (100.0%), 99 (2.2%) |
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Kev Ntsuam Xyuas |
C, 24.51; H, 4.11; Al, 55.06; O, 16.32 |
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Bauxite Hmoovyog lub sijhawm dav dav rau ores tsuas yog tsim ntawm trihydrate alumina, monohydrate mos alumina, lossis monohydrate nyuaj alumina. Raws li qhov tsis tseem ceeb ntawm cov tswv yim cov ntxhia cov khoom siv hauv kev lag luam thoob ntiaj teb, thiab nws nyob hauv txoj haujlwm tseem ceeb hauv kev lag luam hauv tebchaws thiab kev tiv thaiv kev tsim kho.
1. Extraction of alumina thiab electrolytic ntau lawm ntawm txhuas
Bauxite yog cov khoom siv raw zoo tshaj plaws rau kev rho metallic txhuas, nrog kwv yees li 76% ntawm lub ntiaj teb bauxite siv nyob rau hauv daim teb no. Cov txheej txheem rho tshuaj suav nrog ob theem qib: alumina extraction thiab electrolytic aluminium ntau lawm
Alumina extraction (yeej los ntawm Bayer txheej txheem)
Cov khoom siv raw: bauxite yog kwv yees crushed mus rau 100-300mm los ntawm lub puab tsaig crusher, thiab tom qab ntawd finely crushed rau 10-50mm los ntawm kev sib xyaw ntawm ib lub khob noom / kev cuam tshuam cov crusher thiab ib feem crusher. Thaum kawg, nws yog av rau hauv cov slurry zoo nrog kev faib ua feem ntawm 60-80% ntawm -0.074mm los ntawm pob zeb.
Kev kub siab ua pauj: Cov slurry reacts nrog sodium hydroxide ntawm 230-260 kom muaj txiv qaub kom inhibit silicon xaus thiab txo kev tsis txaus ntseeg thiab txo kev tsis txaus ntseeg thiab txo kev tsis txaus ntseeg.
Cov av nkos liab sib cais: cov av nkos liab uas muaj cov hlau thiab titanium yog sib cais los ntawm kev tso tsheb hlau luam thiab anti {{{} saib cov tshuaj lom.
Noob decomposition: Tom qab txias, tus niam dej cawv tau ntxiv nrog cov noob txhuas hydroxide kom ua rau cov kev txiav txim siab ntawm sodium aluminate thiab nag lossis daus ntawm Aluminium hydroxide.
Calcination: Aluminum hydroxide is calcined at a high temperature of 1200 ℃ to produce metallurgical grade alumina (α - Al ₂ O3 content>98%).
Txoj kev hloov pauv: rau cov khoom silicon thiab qis - hydroxide los ntawm leaching, tshuaj ntsuab, tab sis nrog kev siv hluav taws xob ntau.
Electrolytic Alfolle ntau lawm (HERT HERTZSPRUN cov txheej txheem)
Cov cuab yeej electrolytic: prebaked anode electrolytic cell yog cov khoom siv hluav taws xob, siv cov flux
Cov tshuaj tiv thaiv hluav taws xob: Ua kua txhuas (AL ³ +3 e ⁻ ⁻ ⁻ → → → ⁻ ↑ ↑ ↑ ↑), uas yuav tsum tau hloov pauv tsis tu ncua.
Tag nrho cov tshuaj tiv thaiv: 2al ₂ o 3+3 C} {{{}}}}}}, nrog cov nqi hluav taws xob suav rau 40%.
Kev tiv thaiv ib puag ncig kev kho mob: Purification fluorine -}}}}}}}}} (alkali
2. Alloy alloy npaj thiab siab-}}}}} daim ntaub ntawv thov
Aluminium Hlau tau dhau los ua tus thib ob cov khoom siv loj tshaj plaws tom qab hlau vim nws qhov qis dua (2.7g / thermal), × 10 ⁶ s / m), thiab muaj zog corrosion tsis kam
Hauv kev ua liaj ua teb architecture, nws suav rau ntau tshaj 25% ntawm txhuas noj thiab siv rau lub qhov rooj thiab qhov rai ncej txheej, thiab cov ntaub ntawv zoo nkauj. Piv txwv li, lub zog - txuag tau kev ua tau zoo ntawm cov choj tawg aluminium alloy lub qhov rooj thiab qhov rais nce 30%.
Kev Thauj Mus Los: Cov nyiaj txiag rau 35% ntawm kev noj, siv 1kg ntawm txhuas hauv kev muaj qhov hnyav los ntawm 2.2kg thiab kev noj roj los ntawm 7%; Aluminium Lithium alloium nyob rau hauv lub aerospace teb txo qis qhov hnyav ntawm cov dav hlau tsim los ntawm 10-15%.
Ntim khoom Ntim: Sau nyiaj rau 20% ntawm kev noj, txhuas ntawv ci thickness tau tsawg li 0.006mm, siv rau cov khoom noj ntim khoom, dej haus luam yeeb thiab cov khoom siv luam yeeb ntau dua 90%.
Lub zog hluav taws xob: Kev suav nyiaj rau 15% ntawm kev noj mov, siab}} portage kis tau zoo ntawm 5G lub chaw nres tsheb ris tau txhim kho los ntawm 40% siv txhuas cov profiles.
Tsis yog metersallic teb: Cov khoom ntawm ntau cov ntaub ntawv
1. Refractory Cov Khoom Siv: Lub Pob Txheem ntawm Siab - kev lag luam kub
High alumina alumina clinker (Al ₂ O Ⅲ content>60%) muaj kev ua kom tiav ntawm 1780 degree, cov tshuaj ruaj khov ruaj khov, thiab yog siv dav hauv:
Cov hlau hlau me me: kev siv nyiaj rau 60% ntawm kev hloov kho cov khoom siv hluav taws xob, thiab txuas ntxiv ua hluav taws xob lub tsheb, nrog lub neej pabcuam ntau tshaj 2 xyoos.
Cov txiv hmab txiv ntoo Kiln: High alumina cov cib yog siv nyob rau hauv thaj chaw hloov chaw ntawm lub zog hluav taws xob tsis kam los ntawm 50% thiab txo kev siv hluav taws xob ib zaug ntawm 3%.
Iav Melting Rauv: phab ntsa ntawm cov pa pas dej ua ke yog ua los ntawm fused fedconia cortundum cib (muaj 50), uas nce cov corrosion tsis kam los ntawm peb zaug.
Aluminium silicate fiber: ua los ntawm melting thiab tshuab hauv cov hluav taws xob ua hluav taws xob ntawm 0.03-0.06w / (mapift Thermal tiv thaiv cov tshuab.
3. Tshuaj lom neeg: tus tub ntxhais ntawm kev lag luam catalysis thiab ib puag ncig kev tiv thaiv
Ua kom Alumina: thaj chaw tshwj xeeb cheeb tsam 300 txog kev siv rau:
Cov cab kuj ntawm roj quav roj catalyst (xws li zsm-5 molecular sab cib) tuaj yeem nce roj av tawm los ntawm 8%.
Cov tshuaj fluoride tawm los ntawm cov dej haus (adsorption muaj peev xwm 1.5mg / g), nrog effluent fluoride cov ntsiab lus<1.0mg/L.
Transformer roj kom qhuav (cov ntsiab lus noo noo<10ppm) increases insulation strength by 50%.
Aluminium tebchaw:
Aluminium Sulfate (Al ₂ (yog li ₄) α) yog siv rau ntawv sizing (txhim kho cov ntawv dej tsis kam), nrog kev noj ntawm 15kg ib tuj ntawm daim ntawv.
Polyaluminium chloride (PAC) yog siv rau kev kho kom zoo (COD raug tshem tawm ntawm 60-90%), nrog kev txo qis los ntawm 30% piv rau cov ntsev ua ib txwm.
Bauxite Hmoov(Alcl3) raws li catalyst rau Friedel Crafts cov tshuaj tiv thaiv tuaj yeem nce ntxiv los ntawm synthesized xim intermediates (xws li tawg liab 3) los ntawm 15%.
2. Sib tsoo cov khoom: ntse cuab yeej rau cov khoom siv tshuab
Tom qab ultrafine sib tsoo (D50<5 μ m), bauxite clinker is used for:
Sib tsoo log tsim: xim av corundum sib tsoo log (al ₂ o α cov ntsiab lus ntawm Ra0.4 μ m.
Polishing Hmoov: Siab purity alumina micro hmoov (particle loj 1-3 μ m) yog siv rau cov tawv nqaij tawv, txo qhov chaw sib dhos rau λ / 10 (λ=632.8 nm).
Sandblasting Tu: Rov ua dua Bauxite Tailings los npaj bandblasting media, txo cov nqi los ntawm 40%, haum rau nkoj tsuag (sa2.5 qib).
4. Ceramics thiab iav: qhov fusion ntawm cov qauv thiab ua haujlwm
Kev Lag Luam Ceramic:
High alumina porcelain (with Al ₂ O3 content of 75-90%) is used to manufacture spark plugs (with heat shock resistance>800 degree), nrog kev pabcuam lub neej ntawm dhau 100000 kilometers.
99 Ceramic (nrog al ₂ O3 cov ntsiab lus ntau dua lossis sib npaug nrog kev nthuav dav ci, nrog rau kev nthuav dav hluav taws xob setefficient ntawm 7.2 ⁻⁶) thiab siab siab nrog silicon chips.
Iav Kev Lag Luam:
Ntxiv 3 {{{4 4}} 5% al ₂ O3 tau nce lub ntsiab lus zoo rau 1550 degree), thiab yog siv rau kev kub siab socem
Aluminum silicate glass (with 20% Al ₂ O3 content) is used for mobile phone cover plates, with a Mohs hardness of 7 and a 3-fold increase in scratch resistance.
5. Maas thiab Cov Khoom Siv Hauv Tsev: Txhawb Cov Khoom Siv Hluav Taws Xob
High alumina xis mas (al ₂ O3 cov ntsiab lus 40-75%):
Tus 3-hnub siv tau mus txog 50mpa thiab yog siv rau kev kho mob xwm txheej ceev (xws li kev kho mob hauv av qeeg), txo lub sijhawm tsim kho), txo lub sijhawm kev tsim kho).
Resistant rau sulfate poob ntawm tsawg dua 10% tom qab soaking hauv 5 xyoos), haum rau cov khoom siv siv tshuaj.
Alumination Maas:
Used in combination with Portland cement to prepare self leveling mortar (flowability>220mm), with a 24-hour compressive strength>20mpa.
1. Cov Khoom Siv Hluav Taws Xob Tshiab
Lithium ion roj teeb:
Aluminium Ntawv Nyiaj Pab ua qhov zoo electrode tam sim no sau (tuab 12 μ m), suav rau 5-8% ntawm lub roj teeb. Kev ua tau zoo los ntawm 10% tuaj yeem txo sab hauv kev tiv thaiv los ntawm 15%.
Bauxite Lithium rho tawm Technology (xws li cov qauv thev naus laus zis) ua tiav cov roj teeb lithium
Hydrogen Zog Cia Thiab Tsheb Thauj Mus Los:
Txhuas cov alloys (xws li Alh3) muaj cov khoom siv hydrogen cia kom txog li 10 hydrogen systems (siab 35MPA), nce thaj tsam ntawm 40%.
2. Ib puag ncig cov ntaub ntawv phooj ywg
Adsorbent:
Qhov muaj peev xwm hloov kho Bauxite muaj kev tshaj tawm kev tshaj tawm ntawm 50mg / g rau cov hlau hnyav xws li PB ⁺ ⁺ ² thiab cd ² ⁺, txo tus nqi ntawm kev kho kom tau txais txiaj ntsig los ntawm 30%.
Bauxite raws catalysts (xws li Fe / al ₂ O3) tau siv rau vocs catalalktic oxidation, nrog kev hloov pauv ntau dua 95% thiab qhov kub thiab txias.
Cov cab kuj catalyst:
Bauxite muab tau los ntawm - ₂ ₂ O3 yog siv rau kev ua pa tsheb ua kom zoo dua li 90% thiab cov leej menyuam leej quav tshuaj tiv thaiv 2 zaug.
3. 3 d cov ntaub ntawv luam ntawv
Ceramic slurry:
High Alumina Ceramic muab tshuaj txhuam (nrog cov ntsiab lus ruaj khov ntawm 70%) yog siv rau cov duab kho 3D, nrog rau kev npaj ntawm cov thiav thermal teeb meem rau avia.
Hlau Hmoov:
Aerosol aluminium hmoov (d 50=20 μ m) yog siv rau xaiv laser melting (slem), nrog lub zog ntawm ntau tshaj 980MPA.
Cov kev tsim muaj cuam tshuam nrog ib txoj kev rau kev npaj zoo ore los ntawmBauxite HmoovCov. Cov kauj ruam hauv qab no suav nrog:
(1) Cov lus qhia los ua kom qhuav los txo nws cov ntsiab lus ya raws hauv qab 5% kom tau cov pob zeb qhuav;
(2) Zom lub qhuav pob qhuav ore tau txais hauv kauj ruam (1) los ua cov ore fineness ncav cuag 100 μ% ~ 80%, thiab nyoos thiab nyoos ore tau txais;
(3) Cov tshuaj pleev tau nyoos nyoos (2) yog qhov kub thiab tso tawm hauv qhov ntsuas cua sov ntawm 600 Cov txheej txheem npaj tau npaj tau yooj yim, yooj yim rau kev tswj hwm thiab kho kom sai thiab synchronously tshem tawm ntau yam kev tsis zoo nyob rau hauv lub ore, yog li los txhim kho qhov zoo ntawm cov khoom ore.
Cim npe nrov: Bauxite Hmoov CAS 1318-16-7, cov neeg muag khoom, chaw tsim khoom, Hoobkas, lag luam Wholesale, yuav, nqe, loj, loj, rau muag