Smelting yog muab ingots rau kev ua yas. Smelting furnaces feem ntau siv cov roj hluav taws xob reverberatory furnaces los yog roj-tso reverberatory rauv, muaj peev xwm ntawm 20 mus rau 40 tons lossis ntau dua; kuj siv cov cua sov reverberatory furnaces, muaj peev xwm ntawm feem ntau txog 10 tons. Txhawm rau kom txo lub sijhawm ua haujlwm ntawm lub cub tawg, txhim kho kev ua haujlwm ntawm melting efficiency, thiab txo cov pa nqus thiab oxide zaj duab xis kev koom tes, tilting sab saum toj-loading ncig furnaces tau saws nyob rau hauv kev lag luam. Nws yog qhov zoo tshaj plaws los siv cov cuab yeej tshuaj ntsuam xyuas sai los soj ntsuam cov alloy muaj pes tsawg leeg thaum lub sij hawm smelting thiab ua kom raws sijhawm. Txhawm rau kom ntseeg tau qhov purity ntawm yaj, tiv thaiv cov pa phem ntawm cov pa phem thiab tswj cov tshuaj muaj pes tsawg leeg, ntxiv rau kom txo lub sijhawm smelting kom ntau li ntau tau, nws raug nquahu kom npog nws nrog powdery flux feem ntau ntawm cov poov tshuaj chloride thiab sodium. tshuaj chloride. Qhov dav dav npaum li cas yog 0.4 txog 0.4% ntawm qhov hnyav ntawm tus nqi. 2%. Lub melting kub feem ntau yog tswj ntawm 700 ~ 750 degree.
Cov hlau yaj kuj tseem yuav tsum tau ua kom zoo dua qub thiab lim kom tshem tawm cov pa phem hydrogen thiab cov khoom tsis yog hlau hauv cov hlau los txhim kho cov purity ntawm cov hlau. Refining feem ntau yog siv cov khoom ua kom zoo los yog cov khoom siv roj ua kom zoo. Cov khoom ua kom zoo yog feem ntau ua raws li cov tshuaj chlorine ntsev, thiab cov tshuaj ua kom zoo uas siv hexachloroethane es tsis txhob siv cov chlorine ntsev. Thaum ntxov, cov tshuaj chlorine tau siv los ua cov roj refining tus neeg sawv cev. Txawm hais tias cov nyhuv purification tau zoo, nws ua rau muaj kuab paug ib puag ncig loj. Yog li ntawd, nitrogen-chlorine sib xyaw roj, inert gas thiab peb-gas refining tus neeg sawv cev tau tsim, uas muaj cov teebmeem zoo dua. Txhawm rau kom ua tiav cov txiaj ntsig zoo, cov pa oxygen thiab cov dej noo hauv cov pa roj refining feem ntau yuav tsum tsawg dua 0.03% thiab 0.3 g / m3 raws li. Lub tshuab nqus tsev dynamic degassing kuj muaj qhov zoo degassing thiab sodium tshem tawm cov teebmeem.