Titanium thiab titanium alloys muaj nuj nqis tseem ceeb hauv aerospace, biomedicine thiab lwm yam kev lag luam vim lawv cov khoom zoo heev, tab sis kev npaj ntawm titanium thiab titanium alloys los ntawm cov tsoos hlau thermal txo muaj teeb meem ntawm kev siv hluav taws xob thiab cov nqi siab. Tam sim no, kev npaj thev naus laus zis ntawm titanium thiab titanium alloys yog nyob rau theem ntawm kev hloov pauv los ntawm siab - zog chlorination metallurgy mus rau qis - carbon electrochemical metallurgy. Muaj ob txoj kev qhia tseem ceeb rau kev npaj ntawm titanium thiab titanium alloys - hlau thermal txo (Hunter, Kroll, DRTS, thiab lwm yam) thiab molten ntsev electrochemistry (FFC, OS, molten ntsev electrodeposition, thiab lwm yam).
Kev sib piv kev tsom xam ntawm thermal txo txoj kev thiab molten ntsev electrochemical txoj kev
Lub siab - kev txhim kho zoo thiab kev tsim qauv ntawm kev lag luam titanium tau dhau los ua qhov yuav tsum tau muaj rau kev hloov pauv thiab kev txhim kho kev lag luam. Kev sib piv ntawm qhov zoo thiab qhov tsis zoo ntawm cov khoom siv hluav taws xob tam sim no titanium extraction yog cov ncauj lus kom ntxaws hauv Table 1. Kroll thiab Hunter txoj kev yog ob txoj hauv kev classic rau kev tsim khoom ntawm titanium daim txhuam cev. Ntawm lawv, txoj kev Hunter tau maj mam hloov los ntawm Kroll txoj kev thiab cov txheej txheem electrolysis tshwm sim vim nws cov khoom siv qis thiab kev siv zog siab, tab sis nws tseem muaj txiaj ntsig tshawb fawb hauv siab -purity titanium lossis tshwj xeeb daim ntawv thov scenarios. Vim yog qhov nyuaj ntawm cov txheej txheem, kev siv hluav taws xob siab thiab kev tsim tawm tsis tu ncua, tus nqi tsim khoom ntawm Kroll txoj kev tseem siab, uas txwv tsis pub nws loj - daim ntawv thov. Nyob rau hauv xyoo tas los no, molten ntsev electrochemistry (xws li FFC, USTB, thiab lwm yam txheej txheem) tau nyiam ntau yam vim nws qhov zoo xws li ntsuab, qis - carbon, thiab muaj peev xwm tsim tau tas li. Txawm hais tias cov txheej txheem no tseem nyob rau theem kev hloov pauv ntawm chav kuaj mus rau kev sim ntsuas, lawv yuav tsum ua tiav daim ntawv thov kev lag luam los ntawm kev tsom mus rau kev tawg los ntawm cov kev cuam tshuam tseem ceeb xws li kev txhim kho tam sim no, kev tswj cov khoom purity, thiab cov cuab yeej ua kom muaj zog.
Kev siv dav dav ntawm titanium thiab titanium alloys hauv ntau qhov chaw xws li aerospace thiab kev kho mob yog tsav kev nce qib ntawm nws cov txheej txheem ntau lawm. Txawm hais tias tam sim no kev tawg ntawm cov txheej txheem titanium extraction, tsis muaj kev siv tshuab tau pom los hloov txoj kev Kroll hauv kev lag luam. Los ntawm txoj kev Hunter ntxov tshaj plaws rau FFC txoj kev thiab OS txoj kev, txawm hais tias kev siv hluav taws xob thiab kev ua qias tuaj ib puag ncig tau raug txo qis rau qee qhov, lawv tseem ntsib teeb meem xws li kev ua haujlwm tsis zoo tam sim no thiab tsis muaj peev xwm tsim tawm tsis tu ncua.
Molten ntsev electrochemistry yog suav tias yog ib txoj hauv kev siv tau rau Kroll txoj kev hauv kev lag luam vim nws lub peev xwm rau qis -kev ua qias tuaj, tsis tu ncua ntau lawm. Ntawm lawv, USTB txoj kev tau ua tiav zoo hauv kev rho tawm titanium, ua tiav ib nrab - kev tsim khoom tsis tu ncua thaum ua tau siab - purity titanium. Tsis tas li ntawd, molten ntsev electrodeposition txoj kev tuaj yeem ncaj qha npaj titanium alloys, zam qhov teeb meem ntawm kev siv hluav taws xob ntau hauv cov txheej txheem kev sib tsoo.
