Scheelite, calcium tungstate ntxhia, CaWO 4, uas yog ib qho tseem ceeb ntawm tungsten. Nws tau txais txiaj ntsig kev lag luam hauv xyoo pua 20th thaum tungsten tau siv rau hauv cov hlau alloy thiab hluav taws xob-teeb filaments. … Scheelite yog xim dawb, daj, xim av, lossis ntsuab thiab muaj vitreous rau adamantine lustre.
Cov txiaj ntsig ntawm wolframite yog dab tsi?
Wolframite yog muaj nuj nqis heev lilub ntsiab ntawm cov hlau tungsten, muaj zog thiab siv hluav taws xob thiab siv hluav taws xob thiab cov cuab yeej ua rog, raws li zoo li nyuaj tungsten carbide tshuab cuab yeej.
Ntau npaum li cas scheelite?
Comments. Ib qho ore ntawm tungsten (W), cov ntxhia scheelite tshwm sim hauv cov cheeb tsam thoob plaws ntiaj teb. Txawm li cas los xij, lub pov haum zoo muaju tsis tshua muaj. … Tag nrho cov ntaub ntawv no tsis tshua pom zoo li lub pov haum faceted, tab sis scheelites tej zaum yog feem ntau txiav ntawm pab pawg.
Puas yog tungsten scheelite?
Tungsten nyob rau hauv ib qho ntawm nws cov ntxhia cov ntaub ntawv tau muab nws lub npe (lub ntsiab lus "hnyav stone") los ntawm Swedish mineralogist A. F. Cronstedt hauv 1755. Hauv 1781 lwm Swede, Carl Wilhelm Scheele, soj ntsuam cov ntxhia thiab txheeb xyuas cov txiv qaub thiab cov kua qaub uas nws hu ua tungstic acid; cov ntxhia tau tom qab lub npe scheelite.
Puas tungsten kim?
Tungsten tsis muaj nuj nqis
tungsten tsis yog hlau muaj nuj nqis thiab tsis muaj koob meej lossis muaj nuj nqis uas kub, nyiaj los yog platinummuaj. Nws suav hais tias yog ib qho khoom pheej yig hlau. Cov neeg feem coob nyiam kom lawv cov kab tshoob ua los ntawm cov hlau muaj txiaj ntsig kom muab tus nqi ntau dua rau nws.
