siab purity niobium machined qhov chaw superconducting niobium khoom
Niobium muaj nyob hauv ob hom isotope ruaj khov: niobium-93 thiab niobium-95.Cov isotopes muaj cov lej sib txawv ntawm cov neutrons hauv lawv cov nuclei, tab sis lawv txhua tus muaj cov tshuaj lom neeg zoo sib xws.Hais txog nws cov qauv siv lead ua, niobium tuaj yeem muaj nyob hauv ntau hom, suav nrog alpha thiab beta theem, nyob ntawm qhov kub thiab txias.
Ntxiv rau nws daim ntawv tseem ceeb, niobium muaj nyob rau hauv ntau lub tebchaw thiab alloys.Piv txwv li, niobium-tin (Nb3Sn) thiab niobium-titanium (Nb-Ti) feem ntau yog siv los tsim superconducting hlau rau kev siv xws li MRI cov cav tov thiab particle accelerators.Cov alloys muaj cov khoom siv superconducting ntawm qhov kub thiab txias, ua rau lawv muaj txiaj ntsig hauv kev ua haujlwm ntawm superconductivity.
Tsis tas li ntawd, niobium tuaj yeem raug alloyed nrog lwm cov hlau los txhim kho nws cov khoom siv rau kev siv tshwj xeeb.Piv txwv li, niobium tuaj yeem ua ke nrog zirconium, tantalum lossis lwm yam khoom siv los tsim cov alloys nrog kev txhim kho lub zog, corrosion kuj lossis superconducting zog.
Zuag qhia tag nrho, ntau hom niobium suav nrog nws daim ntawv tseem ceeb, isotopes, cov qauv siv lead ua, thiab ntau yam alloys thiab cov tebchaw, txhua tus muaj cov khoom tshwj xeeb thiab kev siv.
Niobium tau txais feem ntau los ntawm cov txheej txheem hu ua Brazilian pyrochlore txoj kev.Txoj kev extraction muaj ntau theem:
1. Kev Mining: Thawj kauj ruam yog rho tawm cov niobium-muaj ore, uas feem ntau txuam nrog lwm yam minerals xws li tantalum, tin thiab titanium.Brazil thiab Canada yog cov neeg tsim khoom tseem ceeb ntawm niobium ore.
2. Ore beneficiation: Cov mined ore yog ua tiav los mloog zoo niobium minerals.Qhov no feem ntau suav nrog kev sib tsoo, sib tsoo thiab ntau yam kev sib cais kom cais cov niobium-muaj cov zaub mov los ntawm lwm cov khoom ntawm cov ore.
3. Refining: Lub concentrated niobium ore undergoes ntxiv refining txheej txheem kom tshem tawm impurities thiab tsim high-purity niobium concentrate.Qhov no yuav suav nrog kev ua tshuaj lom neeg, leaching thiab hnyav rho tawm kom tau purified niobium tebchaw.
4. Kev txo qis: Lub purified niobium compound yog tom qab ntawd txo cov hlau niobium los ntawm cov txheej txheem kub, feem ntau yog siv cov txheej txheem xws li cov txheej txheem aluminothermic txo.Qhov no tshwm sim hauv kev tsim cov niobium hlau hauv hmoov daim ntawv.
5. Consolidation: Cov hmoov niobium ces muab sib sau ua ib daim ntawv los ntawm cov txheej txheem xws li hmoov metallurgy, forging los yog lwm yam txheej txheem tsim los tsim niobium ingots, nplooj ntawv lossis lwm yam kev xav tau.
Zuag qhia tag nrho, kev tsim khoom ntawm niobium suav nrog ntau cov kauj ruam los rho tawm, ua kom zoo dua thiab ua cov niobium uas muaj cov ore kom tau txais cov niobium hlau zoo siv rau ntau hom kev lag luam.
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