Extraction txoj kev ntawmscandium
Rau ib lub sijhawm ntev tom qab nws qhov kev tshawb pom, kev siv scandium tsis tshwm sim vim nws nyuaj rau kev tsim khoom. Nrog rau kev txhim kho ntau ntxiv ntawm cov txheej txheem kev sib cais ntawm lub ntiaj teb tsis tshua muaj, tam sim no muaj cov txheej txheem paub tab rau purifying scandium tebchaw. Vim tias scandium muaj qhov tsis muaj zog alkalinity piv rau yttrium thiab lanthanide cov ntsiab lus, hydroxides muaj cov ntsiab lus tsis tshua muaj hauv ntiaj teb sib xyaw cov zaub mov uas muaj scandium. Tom qab kev kho mob, scandium hydroxide yuav ua ntej precipitate thaum hloov mus rau cov tshuaj thiab kho nrog ammonia. Yog li ntawd, kev siv cov txheej txheem nag lossis daus tuaj yeem yooj yim cais nws los ntawm cov ntsiab lus tsis tshua muaj hauv ntiaj teb. Lwm txoj kev yog siv cov hierarchical decomposition ntawm nitrate rau kev sib cais, vim nitric acid yog qhov yooj yim rau decompose thiab tuaj yeem ua tiav lub hom phiaj ntawm kev sib cais scandium. Tsis tas li ntawd, kev rov qab ua tiav ntawm kev sib txuas nrog scandium hauv uranium, tungsten, tin thiab lwm yam mineral deposits kuj yog ib qho tseem ceeb ntawm scandium.
Tom qab tau txais ib qho ntshiab scandium compound, nws hloov mus rau hauv ScCl3 thiab co melted nrog KCI thiab LiCI. Cov zinc molten yog siv los ua cov cathode rau electrolysis, ua rau scandium rau precipitate ntawm zinc electrode. Tom qab ntawd, zinc yog evaporated kom tau txais cov xim hlau scandium. Qhov no yog lub teeb nyiaj dawb hlau, thiab nws cov khoom siv tshuaj muaj zog heev. Nws tuaj yeem cuam tshuam nrog dej kub los tsim hydrogen.
Scandiummuaj cov khoom ntawm cov txheeb ze tsawg ntom ntom (yuav luag sib npaug ntawm txhuas) thiab siab melting point. Nitriding (SCN) muaj ib tug melting point ntawm 2900 ℃ thiab siab conductivity, ua rau nws lug siv nyob rau hauv lub electronics thiab xov tooj cua industries. Scandium yog ib qho ntawm cov khoom siv rau thermonuclear reactors. Scandium tuaj yeem txhawb nqa phosphorescence ntawm ethane thiab txhim kho lub teeb xiav ntawm magnesium oxide. Piv nrog rau cov teeb pom kev siab mercury, cov teeb pom kev zoo sodium teeb muaj qhov zoo xws li lub teeb pom kev zoo thiab lub teeb pom kev zoo, ua rau lawv tsim nyog rau kev ua yeeb yaj kiab thiab plaza teeb pom kev zoo.
Scandium tuaj yeem siv los ua ib qho ntxiv rau cov nickel chromium alloys hauv kev lag luam metallurgical los tsim cov hlau tsis muaj cua sov. Scandium yog ib qho tseem ceeb raw khoom rau submarine detection daim hlau. Lub combustion kub ntawm scandium yog mus txog 5000 ℃, uas yuav siv tau nyob rau hauv qhov chaw technology. Sc tuaj yeem siv rau kev taug qab xov tooj cua rau ntau lub hom phiaj. Scandium yog qee zaum siv hauv tshuaj.
Post lub sij hawm: May-16-2023