Strontium carbonate
Strontium carbonate yog ib qho tseem ceeb ntawm cov khoom siv raw nrog ntau yam kev siv.Nws yog carbonate ntxhia, teej tug mus rau pawg aragonite, uas tsis tshua muaj thiab tshwm sim nyob rau hauv limestone los yog marlstone nyob rau hauv daim ntawv ntawm cov hlab ntsha.Nyob rau hauv cov xwm, nws feem ntau muaj nyob rau hauv daim ntawv ntawm cov ntxhia rhodochrosite thiab strontite, coexisting nrog barium carbonate, barite, calcite, celestite, fluorite thiab sulfide, odorless thiab tasteless, feem ntau dawb zoo hmoov los yog tsis muaj xim rhombic siv lead ua, los yog grey, daj-dawb, ntsuab los yog xim av thaum kis los ntawm impurities.Strontium carbonate siv lead ua yog koob-zoo li tus, thiab nws cov aggregate feem ntau yog granular, columnar, thiab radioactive koob.Nws cov tsos yog xim tsis muaj xim, dawb, ntsuab-daj, nrog pob tshab rau cov iav ci ntsa iab, tawg roj luster, nkig, thiab tsis muaj zog lub teeb xiav hauv qab cathode ray.Strontium carbonate ruaj khov, insoluble hauv dej, me ntsis soluble hauv ammonia, ammonium carbonate thiab carbon dioxide saturated aqueous kua, thiab insoluble hauv cawv.Tsis tas li ntawd, strontium carbonate kuj yog ib qho tseem ceeb raw khoom rau celestite, ib qho tsis tshua muaj pob zeb hauv av.Tam sim no, qib high-qib Celestite yuav luag tag.
Nrog kev txhim kho txuas ntxiv ntawm kev lag luam hauv ntiaj teb, daim ntawv thov kev lag luam ntawm strontium kuj tau nthuav dav.Los ntawm lub xyoo pua 19th mus txog rau thaum pib ntawm lub xyoo pua no, cov neeg siv strontium hydroxide los ua suab thaj thiab purify beet syrup;Thaum lub sij hawm ob lub ntiaj teb ua tsov ua rog, strontium tebchaw tau siv dav hauv kev tsim cov foob pob hluav taws thiab cov foob pob tawg;Nyob rau xyoo 1920 thiab 1930s, strontium carbonate tau siv los ua desulfurizer rau steelmaking kom tshem tawm cov sulfur, phosphorus thiab lwm yam khoom tsis zoo;Nyob rau xyoo 1950, strontium carbonate tau siv los ntxuav cov zinc hauv kev tsim cov zinc electrolytic, nrog purity ntawm 99.99%;Thaum xyoo 1960s, strontium carbonate tau dav siv los ua cov khoom sib nqus;Strontium titanate yog siv los ua lub cim xeeb hauv computer, thiab strontium chloride yog siv los ua roj foob pob hluav taws;Hauv xyoo 1968, strontium carbonate tau siv rau xim TV iav iav vim nws tau pom tias siv rau kev ua haujlwm X-ray tiv thaiv zoo.Tam sim no qhov kev thov tau loj hlob sai thiab tau dhau los ua ib qho ntawm cov ntawv thov tseem ceeb ntawm strontium;Strontium tseem tab tom nthuav dav nws daim ntawv thov ntau yam hauv lwm qhov chaw.Txij thaum ntawd los, strontium carbonate thiab lwm cov strontium tebchaw (strontium ntsev) raws li ib qho tseem ceeb inorganic ntsev raw cov ntaub ntawv tau txais kev saib xyuas thiab saib xyuas.
Raws li ib qho tseem ceeb muaj raw khoom, strontium carbonateyog dav siv nyob rau hauv zus tau tej cov duab raj, saib, industrial saib, electronics Cheebtsam, thiab lwm yam.Nyob rau tib lub sijhawm, strontium carbonate kuj yog cov khoom siv tseem ceeb rau kev npaj cov hlau strontium thiab ntau yam strontium ntsev.Tsis tas li ntawd, strontium carbonate kuj tuaj yeem siv rau hauv kev tsim cov foob pob hluav taws, fluorescent iav, teeb liab foob pob, ntawv ua, tshuaj, tshuaj ntsuam xyuas reagents, qab zib refining, zinc hlau electrolyte refining, strontium ntsev pigment manufacturing, thiab lwm yam. Nrog rau qhov kev thov nce siab. -purity strontium carbonate, xws li loj-screen xim TV teeb, xim qhia rau cov computers thiab high-performance sib nqus cov ntaub ntawv, thiab lwm yam. Kev tsim cov khoom strontium nyob rau hauv Nyiv, Tebchaws Meskas, Lub Tebchaws Yelemees thiab lwm lub tebchaws tsim tau poob qis xyoo dhau los. mus rau lub depletion ntawm mineral veins, nce zog nqi thiab ib puag ncig muaj kuab paug.Txog tam sim no, daim ntawv thov kev lag luam ntawm strontium carbonate tuaj yeem pom.
Tam sim no, peb yuav qhia txog cov kev thov tshwj xeeb ntawm strontium carbonate:
Ua ntej tshaj plaws, strontium carbonate tau muab faib ua granular thiab powdery specifications.Cov granular feem ntau yog siv hauv TV iav hauv Suav teb, thiab cov hmoov no tsuas yog siv hauv kev tsim cov strontium ferrite sib nqus cov ntaub ntawv, cov hlau tsis muaj hlau smelting, liab pyrotechnic heartliver thiab cov khoom siv high-purity strontium carbonate rau cov khoom siv hluav taws xob zoo xws li PTC, Feem ntau yog siv rau hauv kev tsim cov iav TV thiab tso saib iav, strontium ferrite, cov khoom sib nqus thiab cov hlau tsis muaj hlau desulfurization, thiab tseem siv rau hauv kev tsim cov foob pob hluav taws, fluorescent iav, Teeb liab foob pob, ntawv ua, tshuaj, tshuaj ntsuam reagent thiab raw cov ntaub ntawv rau kev tsim lwm yam. strontium ntsev.
Kev siv lub ntsiab ntawm strontium carbonate hauv kev siv hluav taws xob yog:
Siv rau kev tsim xim TV receiver (CTV) kom nqus cov electrons tsim los ntawm cathode
1.Kev tsim khoom ntawm strontium ferrite rau cov hlau nplaum tas mus li siv nyob rau hauv cov suab nrov thiab cov hlau nplaum qhov rooj
2.Production ntawm cathode ray tube rau xim TV
3.Tseem siv rau electromagnets thiab strontium ferrite
4.Yuav ua tau rau hauv me me motors, sib nqus separators thiab hais lus nrov
5. Ncua X-rays
6.Nws yog siv rau kev tsim ib co superconductors, xws li BSCCO, thiab kuj rau electroluminescent cov ntaub ntawv.Ua ntej, nws yog calcined rau hauv SrO, thiab ces tov nrog sulfur los ua SrS: x, qhov twg x feem ntau yog europium.
Hauv kev lag luam ceramic, strontium carbonate plays lub luag haujlwm xws li:
1.Nws yog dav siv los ua ib qho khoom ntawm glaze.
2.Nws ua raws li tus flux
3.Hloov cov xim ntawm qee cov hlau oxides.
Tau kawg,Kev siv strontium carbonate feem ntau yog cov xim pheej yig hauv cov foob pob hluav taws.
Nyob rau hauv luv luv, strontium carbonate yog dav siv, feem ntau nyob rau hauv zus tau tej cov TV iav thiab tso saib iav, strontium ferrite, magnetic ntaub ntawv thiab nonferrous hlau desulfurization thiab lwm yam lag luam, los yog nyob rau hauv zus tau tej cov foob pob hluav taws, fluorescent iav, teeb liab foob pob, ntawv ua, tshuaj. , analytical reagents thiab raw khoom rau kev tsim lwm yam strontium ntsev.
Raws li kev txheeb cais, Tuam Tshoj muaj ntau tshaj 20 lub tuam txhab koom nrog hauv kev tsim cov strontium carbonate, nrog rau tag nrho cov khoom tsim tawm txhua xyoo ntawm 289000 tons, dhau los ua lub ntiaj teb loj tshaj plaws tsim khoom thiab cov neeg siv khoom ntawm carbonated gills, thiab xa tawm mus rau txhua qhov chaw ntawm lub ntiaj teb, txaus siab rau lub koob npe nrov. hauv kev lag luam thoob ntiaj teb.Raws li cov ntaub ntawv kev lis kev cai, Tuam Tshoj tus xa tawm ntawm strontium carbonate nyob rau hauv xyoo tas los no yog feem ntau 78700 tons hauv 2003, 98000 tons hauv 2004 thiab 33000 tons hauv 2005, suav txog 34.25%, 36.8% thiab 39.7% ntawm tag nrho lub teb chaws thiab 52%. 54.7% thiab 57.8% ntawm kev lag luam thoob ntiaj teb kev lag luam.Celestite, cov khoom siv tseem ceeb ntawm strontium carbonate, yog cov ntxhia tsis tshua muaj nyob hauv lub ntiaj teb thiab yog cov khoom siv tsis tshua muaj peev xwm txuas ntxiv dua tshiab.
Raws li peb txhua tus paub, strontium yog ib qho tseem ceeb ntawm cov pob zeb hauv av nrog ntau yam kev siv.Ib qho ntawm nws cov kev siv yog ua cov ntsev strontium, xws li strontium carbonate, strontium titanate, nitrate, strontium oxide, strontium chloride, strontium chromate, strontium ferrite, thiab lwm yam. Ntawm lawv, qhov loj tshaj plaws yog tsim strontium carbonate.
Hauv Suav teb, peb cov strontium carbonate muaj qhov zoo dua ntawm kev muab khoom thiab kev tsim khoom.Nws tuaj yeem hais tau tias kev lag luam zeem muag ntawm strontium carbonate tau cog lus tseg.
1.Complex decomposition txoj kev.
Lub celestite tau crushed thiab reacted nrog soda tshauv tov rau 2h ntawm ib tug tshuaj tiv thaiv kub ntawm 100 ℃.Thawj qhov concentration ntawm sodium carbonate yog 20%, tus nqi ntawm sodium carbonate ntxiv yog 110% ntawm tus nqi theoretical, thiab qhov me me ntawm ore hmoov yog 80 mesh.Nyob rau hauv cov xwm txheej no, tus nqi decomposition tuaj yeem ncav cuag ntau dua 97%.Tom qab pom, qhov concentration ntawm sodium sulfate nyob rau hauv lub filtrate tuaj yeem ncav cuag 24%.Tuav lub crude strontium carbonate nrog dej, ntxiv hydrochloric acid seasoning slurry rau pH3, thiab tom qab 2 ~ 3h ntawm 90 ~ 100 ℃, ntxiv barium tshem tawm kom tshem tawm barium, thiab tom qab ntawd kho cov slurry nrog ammonia rau pH6.8 ~ 7.2 kom tshem tawm impurities. .Tom qab kev pom, cov filtrate precipitates strontium carbonate nrog ammonium bicarbonate los yog ammonium carbonate tov, thiab lim kom tshem tawm cov tshuaj ammonium chloride.Tom qab ziab lub ncuav mog qab zib lim, cov khoom strontium carbonate yog npaj.
SrSO4+Na2CO3 → SrCO3+Na2SO4
SrCO3 + 2HCl → SrCl2 + CO2↑ + H2O
SrCl2 + NH4HCO3 → SrCO3 + NH4Cl + HCl
2.Coal txo txoj kev.
Celestite thiab pulverized thee yog crushed kom dhau 20 meshes raws li raw cov ntaub ntawv, qhov ratio ntawm ore rau thee yog 1:0.6 ~ 1:0.7, txo thiab roasted ntawm qhov kub ntawm 1100 ~ 1200 ℃, tom qab 0.5 ~ 1.0h, cov khoom calcined. yog leached ob zaug, ntxuav ib zaug, leached ntawm 90 ℃, soaked rau 3h txhua lub sij hawm, thiab tag nrho cov leaching tus nqi yuav ncav cuag ntau tshaj 82%.Cov tshuaj leaching yog lim, lim residue yog leached los ntawm hydrochloric acid, thiab strontium yog rov zoo dua, thiab cov filtrate yog ntxiv nrog mirabilite tov kom tshem tawm barium, Tom qab ntawd ntxiv ammonium bicarbonate los yog sodium carbonate tov los teb los tsim strontium carbonate nag lossis daus (los yog ncaj qha carbonize nrog carbon dioxide), thiab tom qab ntawd cais, qhuav, thiab zom kom tsim cov khoom strontium carbonate.
SrSO4 + 2C → SrS + 2CO2
2SrS+2H2O → Sr (OH) 2+Sr (HS) 2
Sr(OH)2+Sr(HS)2+2NH4HCO3 → 2Sr(CO3+2NH4HS+2H2O
3.Thermal tov ntawm strontium siderite.
Lub strontium siderite thiab coke yog crushed thiab sib tov rau hauv ib qho sib tov raws li qhov sib piv ntawm ore rau coke = 10: 1 (qhov hnyav piv).Tom qab roasting ntawm 1150 ~ 1250 ℃, cov carbonates yog decomposed los tsim clinker uas muaj strontium oxide thiab lwm yam hlau oxides.Lub clinker yog leached los ntawm peb kauj ruam, thiab qhov zoo tshaj plaws kub yog 95 ℃.Cov kauj ruam thib ob thiab thib peb tuaj yeem leached ntawm.Ua haujlwm kub ntawm 70-80 ℃.Cov tshuaj leaching ua rau cov concentration ntawm strontium hydroxide yog 1mol / L, uas yog haum rau kev sib cais ntawm impurities Ca2 + thiab Mg2 +.Ntxiv ammonium bicarbonate rau cov lim rau carbonization kom tau strontium carbonate.Tom qab sib cais, ziab thiab crushing, tiav lawm strontium carbonate tau txais.
SrCO3 → SrO+C02↑
SrO + H2O → Sr(OH) 2
Sr(OH)2+NH4HCO3 →SrCO3↓+NH3·H2O+H2O
4. Kev siv dav.
Los ntawm cov brine hauv av uas muaj bromine thiab strontium, strontium uas muaj niam cawv tom qab bromine extraction yog neutralized nrog txiv qaub, evaporated, concentrated thiab txias, thiab sodium chloride raug tshem tawm, thiab ces calcium yog tshem tawm los ntawm caustic soda, thiab ammonium bicarbonate yog ntxiv los hloov. strontium hydroxide rau hauv strontium carbonate nag lossis daus, thiab tom qab ntawd yaug thiab qhuav los tsim cov khoom strontium carbonate.
SrC12+2NaOH → Sr(OH)2+2NaCl
Sr(OH)2+NH4HCO3 →SrCO3+NH3 ·H2O+H2O
Wow!Koj paub, Wit-Stone yog lub tuam txhab zoo heev!Cov kev pabcuam zoo heev, cov khoom ntim tau zoo heev, kev xa khoom ceev kuj ceev heev, thiab muaj cov neeg ua haujlwm teb cov lus nug hauv online 24 teev hauv ib hnub.
Lub tuam txhab kev pabcuam yog qhov xav tsis thoob.Tag nrho cov khoom tau txais tau zoo packed thiab txuas nrog cov cim tseem ceeb.Lub ntim yog nruj thiab logistics ceev ceev.
Qhov zoo ntawm cov khoom yog superior kiag li.Ua rau kuv xav tsis thoob, lub tuam txhab kev pabcuam tus cwj pwm los ntawm lub sijhawm lees txais qhov kev nug mus rau lub sijhawm uas kuv tau lees tias qhov tau txais cov khoom yog thawj-chav kawm, uas ua rau kuv zoo siab heev thiab muaj kev zoo siab heev.
