Kev npaj ntawm barium
Kev Lag Luam Npaj ntawmNws yog xim hlau bariumXws li ob kauj ruam: kev npaj barium oxide thiab kev npaj ntawm nws yog xim hlau barium los ntawm hlau thermal txo).
| Khoom | Qia | ||
| Cas tsis muaj | 7647-17-8 | ||
| Batch No. | 16121606 | Ntau: | 100.00KG |
| Hnub ua lag luam: | Dec, 16,2016 | Hnub kuaj: | Dec, 16,2016 |
| Kuaj khoom w /% | Qho kawg | Kuaj khoom w /% | Qho kawg |
| Ba | > 99.92% | Sb | <0.0005 |
| Be | <0.0005 | Ca | 0.015 |
| Na | <0.001 | Sr | 0.045 |
| Mg | 0.0013 | Ti | <0.0005 |
| Al | 0.017 | Cr | <0.0005 |
| Si | 0.0015 | Mn | 0.0015 |
| K | <0.001 | Fe | <0.001 |
| As | <0.001 | Ni | <0.0005 |
| Sn | <0.0005 | Cu | <0.0005 |
| Kuaj Tus Qauv | Yuav, na thiab lwm 16 ntsiab: ICP-MS CA, SR: ICP-AES BA: Tc-Tic | ||
| Xaus: | Ua raws li cov qauv kev lag luam | ||
(1) Kev npaj ntawm Barium oxide
Cov khoom lag luam zoo kawg nkaus uas yuav tsum tau xaiv ua ntej thiab ntab, thiab tom qab ntawd thiab cua hlob kom muaj ntau dua 96% barium sulfate. Lub ee hmoov nrog ib qho me me ntawm tsawg dua 20 mesh yog tov nrog thee lossis roj av coke ntawm 4: 1, thiab ci ntawm 1100 ℃ nyob rau hauv ib tug reverberatory rauv. Lub barium sulfate yog txo rau barium sulfide (feem ntau hu ua "dub tshauv"), thiab cov tau barium sulfide kev daws yog leached nrog dej kub. Txhawm rau hloov barium sulpide rau hauv Barium carbonate dej nag lossis cov pa roj carbonate lossis carbon dioxide yuav tsum tau ntxiv rau Barium Sulfide aqueous daws. Barium oxide tuaj yeem tau los ntawm kev sib xyaw ua ke barium carbonate nrog cov hmoov roj carbon thiab calcining nws nyob rau saum 800 ℃. Nws yuav tsum tau sau tseg tias barium oxide yog oxidized los tsim barium peroxide ntawm 500-700 ℃, thiab Barium peroxide tuaj yeem decomposed los tsim Barium oxide ntawm 700-800 ℃. Yog li ntawd, txhawm rau kom tsis txhob muaj cov khoom lag luam barium peroxide, cov khoom calcined yuav tsum tau txias lossis quenched nyob rau hauv kev tiv thaiv roj.
(2) txo cov txheej txheem txo cov qauv los tsim cov xim hlau barium
Vim muaj cov khoom xyaw sib txawv, muaj ob qhov kev cuam tshuam ntawm txhuas txo barium oxide:
6Bao + + 2al → 3bao • Al2o3 + 3ba ↑
Los yog: 4bao + + 2al → bao • al2o3 + 3ba ↑
Thaum 1000-1200 ℃, ob qhov kev tawm tsam no yuav tsum tau hloov chaw ntawm lub chaw nqus dej tsis tu ncua kom cov tshuaj tiv thaiv no tuaj yeem txuas ntxiv mus rau sab xis. Cov seem tom qab cov tshuaj tiv thaiv yog tshuaj lom thiab xav tau kho ua ntej nws tuaj yeem muab pov tseg.
Kev npaj ntawm ntau cov barium compounds
(1) Kev npaj kev qauv ntawm Barium Carbonate
FairBoonization txoj kev
Cov txheej txheem carbonation tsuas yog sib xyaw ua ke thiab cov thee hauv ib qho kev sib koom ua feem, muab cov roj av, calcining thiab txo qis rau ntawm 1100-1200 ℃ kom tau txais lub barium sulfide yaj. Cov pa roj carbon dioxide yog qhia rau hauv kev daws teeb meem bardfide rau kev ua pa roj teeb, thiab cov tshuaj tiv thaiv yog li nram no:
Bas + 1 + H2O = Baco3 + H2S
Lub tau Barium carbonate slurry yog desulfurized, ntxuav thiab qhuav thiab crushed ntawm 300 ℃ kom tau txais cov khoom tiav Barium carbonate. Cov qauv no yog cov txheej txheem yooj yim hauv cov txheej txheem thiab tus nqi qis, yog li nws tau saws los ntawm cov tuam ntxhab feem ntau.
② Ob Chav Decompositionle
Barium sulfide thiab ammonium carbonate yub tawm mus ob npaug cov tshuaj tiv thaiv, thiab cov tshuaj tiv thaiv yog li nram no:
Bas + (NH4) 2CO3 = Baco3 + (NH4) 2s
Lossis barium chloride reacts nrog potassium carbonate, thiab cov tshuaj tiv thaiv yog li nram no:
BACL2 + K2CO3 = BACO3 + 2KCL
Cov khoom tau los ntawm cov tshuaj tiv thaiv yog tom qab ntawd ntxuav, lim, qhuav, thiab lwm yam kom tau ua tiav barium carbonate khoom.
③ Barium Carpe Tshuaj
Barium carbonate hmoov yog reased nrog ammonium ntsev los tsim soluble barium ntsev, thiab ammonium carbonate yog rov ua dua tshiab. Soluble barium ntsev tau ntxiv rau ammonium carbonate rau nag lossis qhuav thiab qhuav kom ua tiav cov khoom tiav. Ib qho ntxiv, cov niam cawv niam tau txais rov ua tau. Cov tshuaj tiv thaiv yog raws li hauv qab no:
Baco3 + 2hcl = BACL2 + H2O + CO2
BACL2 + 2NH4OH = BA (OH) 2 + 2NH4CL
BA (OH) 2 + CO2 = BACO3 + H2O
(2) Kev npaj npaj ntawm Barium Titanate
① Cov Qauv Txheej Txheem
Barium Titanate tuaj yeem tau txais los ntawm calcining barium carbonate thiab titanium dioxate, thiab lwm yam ntaub ntawv tuaj yeem doped rau hauv nws. Cov tshuaj tiv thaiv yog raws li hauv qab no:
Tam2 + Baco3 = BUTIO3 + CO2 ↑
② txoj kev colrecipitation
Barium chloride thiab titanium tetrachloride yog tov thiab yaj nyob rau hauv vaj huam sib luag, rhuab rau 70) 2 • 4h2o] nag lossis li cas, thiab Tom qab ntawd pyrolyzed kom tau Barium Titanate. Cov tshuaj tiv thaiv yog raws li hauv qab no:
BACL2 + TICL4 + 2H2C2O4 + 5HUKO = BATIO (C2O4) 2 • 4H2O ↓ + 6HCL
Batio (C2o4) 2 • 4h2o = Batio3 + 2CO2 ↑ + + 2COs
Tom qab ntaus cov metatitanic acid, lub barium tshuaj dawb, thiab tom qab ntawd ammonium carbonate thiab metatitanic acid, uas yog calcined kom tau cov khoom. Cov tshuaj tiv thaiv yog raws li hauv qab no:
BACL2 + (NH4) 2CO3 = BACO3 + 2NH4CL
H2TIO3 + Baco3 = Batio3 + Co2 ↑ + H2O
(3) Kev npaj ntawm Barium Chloride
Cov txheej txheem ntau lawm ntawm barium chloride feem ntau yog cov txheej txheem hydrocate accuple thiab cov tshuaj khib nyiab li ntawm cov qauv sib txawv raws li cov qauv sib txawv lossis cov ntaub ntawv sib txawv.
① Hydrochloric acid qauv. Thaum Barium Sulfide yog kho nrog hydrochloric acid, lub ntsiab kev tawm tsam yog:
Bas + 2HCI = BACL2 + H2S ↑ + + Q
②barium carbonate txoj kev. Ua nrog Barium Carley Carbonate (Barium Carbonate) raws li cov khoom siv raw, qhov tseem ceeb yog:
Baco3 + 2Hci = BACL2 + CO2 ↑ + H2O
③Carbonization txoj kev
Cuam tshuam ntawm barium rau tib neeg kev noj qab haus huv
Churium cuam tshuam rau kev noj qab haus huv li cas?
Barium tsis yog qhov tseem ceeb rau tib neeg lub cev, tab sis nws muaj kev cuam tshuam zoo rau tib neeg kev noj qab haus huv. Barium tej zaum yuav raug barium thaum barium mining, smelting, tsim, thiab siv cov barium sib txuas. Barium thiab nws cov tebchaw tuaj yeem nkag mus rau hauv lub cev los ntawm kev ua pa, zom cov kab mob, thiab tawv nqaij puas. Kev lom zem ntawm kev ua hauj lwm kev lom yog tshwm sim los ntawm kev nqus pa, uas tshwm sim hauv kev sib raug zoo thaum kev tsim khoom thiab siv; Cov kev ua haujlwm tsis yog kev ua haujlwm ntawm kev ua haujlwm ntawm kev lom zem yog tshwm sim los ntawm kev noj haus zom zom zaws, feem ntau tshwm sim los ntawm kev noj haus tsis noj; Kua ua kua Barium sib txuas tuaj yeem nqus tau los ntawm cov tawv nqaij raug mob. Cov pob txha hnyav feem ntau yog tshwm sim los ntawm kev siv khoom noj khoom haus.
Kev Kho Mob Siv
(1) Barium noj mov radicegraphy
Barium noj mov radestive badium barium radium radium radium yog siv Barium Barium noj mov yog ib qho ntawm cov neeg sawv cev ntawm qhov ncauj, thiab cov tshuaj uas tsis sib xws ntawm cov dej tsis sib xws, yog li nws yog cov tshuaj lom tsis yog-lom rau tib neeg.
Raws li cov kev xav tau ntawm kev kuaj mob thiab kev kho mob ntawm cov tub rog noj mov, tag nrho cov plab zom zaub mov, cov plab zom zaub mov, cov hnyuv barium stema thiab cov plab hnyuv barium enema.
Barium lom
Txoj kev ntawm kis
Barium tuaj yeem raug rauqiathaum barium mining, smelting, thiab tsim khoom. Tsis tas li ntawd, barium thiab nws cov tebchaw tau siv dav. Cov kua nplaum ua rau muaj tshuaj lom neeg muaj xws li barium carbonate, barium sulfide, barium nitrate, thiab barium oxide. Qee qhov kev tsim nyog txhua hnub tseem muaj barium, xws li barble sulfide hauv cov tshuaj tshem tawm cov tshuaj tiv thaiv plaub hau. Qee cov neeg ua liaj ua teb kab lis kev cai lossis cov roj av kuj tseem muaj soluble chim ntsev xws li barium chloride thiab barsim carbonate.
Lub sij hawm Post: Jan-15-2025