Niobium Refining

Niobium hmoov, niobium sponges los yog brittle niobium strips tuaj yeem tsim los ntawm kev txo cov niobium tebchaw, tab sis cov khoom niobium no kuj muaj qee cov impurities, ntawm cov hydrogen, oxygen thiab nitrogen tshwj xeeb tshaj yog yuav ua rau niobium nkig, thiab yog li ntawd yuav tsum tau ua. tshem tawm ntxiv. Muaj ob lub hom phiaj tseem ceeb ntawm niobium refining, piv txwv li purification thiab densification, thiab ob txoj kev no feem ntau ua tiav ib txhij hauv kev tsim khoom.
Vim muaj kev sib raug zoo ntawm niobium rau cov pa thiab carbon, nws tsis tuaj yeem siv cov thawv uas muaj cov pa oxygen thiab cov khoom siv carbonaceous, thiab nws yuav tsum tau nqa tawm nyob rau hauv qhov kub thiab txias thiab lub tshuab nqus tsev siab, uas tsis tsuas yog ua rau kev ua kom zoo dua qub. txheej txheem, tab sis kuj muaj kev xav tau siab rau cov khoom siv. Niobium refining txoj kev yog lub tshuab nqus tsev sintering, xws li niobium nqus sintering txoj kev refining, arc melting txoj kev, xws li niobium nqus arc melting, electron beam melting, xws li niobium electron beam melting. Ib qho zoo tshaj plaws purification nyhuv ntawm electron beam melting, feem ntau siv. Txhawm rau kom tau txais cov txiaj ntsig zoo tshaj plaws, feem ntau siv ntau txoj hauv kev ua kom zoo nrog cov txheej txheem refining, xws li sintering ntawm niobium ua los ntawm cov sawb, thiab tom qab ntawd electron beam melting.