High-temperature-resistant hlau muaj zoo thermal conductivity, hluav taws xob conductivity, tsis tshua muaj thermal expansion coefficient, high-temperature zog, tsawg vapor siab thiab hnav tsis kam. Lawv yog qhov zoo tagnrho rau cov khoom siv hluav taws xob tsim hluav taws xob, kev tsim cov khoom siv hlau, kev tsim iav, cov khoom siv hluav taws xob kub kub ntawm cov khoom siv tseem ceeb rau kev siv dav hlau thiab kev lag luam kev lag luam.
Tungsten thiab molybdenum yog ob hom hlau uas kub-resistant. Ua ke, tungsten thiab molybdenum sawv cev rau kev lag luam, uas yog, kev lag luam hlau refractory. Lwm cov hlau refractory yog niobium, zirconium, titanium, hafnium, tsis yog ib qho khoom. Nws muaj cov txiaj ntsig zoo rau kev tsim kho kev lag luam, thiab cov khoom siv tam sim no tsuas yog siv rau ntawm lub zog electrodes ntawm argon arc vuam tshuab. Tuam Tshoj yog lub ntiaj teb tus tsim khoom loj tshaj plaws ntawm tungsten thiab molybdenum, thiab nws cov khoom xa tawm rau 80 feem pua ntawm lub ntiaj teb tag nrho. Nws yog dav siv hauv vuam, hluav taws xob teeb pom kev zoo, khoom siv hluav taws xob, tshuaj, mining, metallurgy, nkoj tsim, roj av, aerospace thiab lwm yam kev lag luam, thiab muaj lub neej yav tom ntej.
Tungsten-molybdenum thiab tungsten-molybdenum alloys tau dhau los ua kev xaiv nrov rau cov khoom siv hluav taws xob tsim hluav taws xob, kev tsim cov khoom siv hlau, kev tsim iav, thiab qhov kub kub ntawm qhov cub vim lawv cov thermal conductivity, hluav taws xob conductivity, thermal expansion coefficient, high-temperature. lub zog, tsis tshua muaj vapor siab, thiab hnav tsis kam. Cov khoom hnyav rau kev tsim khoom, kev siv dav hlau thiab kev tiv thaiv kev lag luam. Daim ntawv thov ntawm molybdenum thiab molybdenum alloys nyob rau hauv cov teb saum toj no yog tsim los ntawm machining, sib sau, hlau ua thiab vuam.
Tungsten yog ib qho khoom siv tsis tuaj yeem hloov pauv tau thiab cov peev txheej zoo rau kev lag luam hauv lub tebchaws thiab kev tiv thaiv niaj hnub hauv tebchaws. Cov cemented carbide ua los ntawm tungsten muaj ultra-siab hardness thiab zoo heev hnav tsis kam, thiab yog siv los tsim ntau yam cuab yeej txiav, riam, drilling cuab yeej thiab hnav-resistant qhov chaw. Qhov chaw, hu ua "cov hniav kev lag luam"; molybdenum feem ntau yog siv rau hauv kev lag luam hlau thiab hlau, feem ntau yog siv ncaj qha rau steelmaking lossis cam khwb cia hlau tom qab raug briquetted nrog molybdenum oxide, thiab ib feem me me yog smelted rau hauv ferromolybdenum thiab ces siv rau steelmaking.
Cov ntaub ntawv qhia tau hais tias tag nrho cov pov thawj pov thawj ntawm tungsten hauv ntiaj teb tsuas yog 2.9 lab tons, uas tau muab faib rau hauv Suav teb, Canada, Russia thiab Tebchaws Meskas. Plaub lub tebchaws no suav txog li 84 feem pua; Qhov kev faib ua feem yog kwv yees li 60 feem pua , qeb thib ib hauv ntiaj teb. Tuam Tshoj cov khoom siv tungsten ore yog nplua nuj heev thiab muaj ntau hom kev tso nyiaj, tab sis kev lag luam yog chaotic, cov khoom zoo yog tsawg, thiab homogeneity yog loj. Txawm hais tias tom qab xyoo ntawm kev txiav txim mining rectification, Tuam Tshoj txoj kev lag luam tungsten mining tseem muaj teeb meem loj dhau kev siv. Txij Lub Ib Hlis Ntuj txog Lub Kaum Ib Hlis 2011 Lub Peb Hlis, Tuam Tshoj tus tungsten concentrate tso tawm mus txog 120,000 tons, ib xyoos ib zaug nce ntawm 14.06 feem pua.
Lub ntiaj teb molybdenum ore reserves yog kwv yees li 8.6 lab tons, thiab kev faib thoob ntiaj teb molybdenum cov peev txheej yog qhov tsis sib xws, feem ntau hauv Suav teb, Tebchaws Meskas thiab Chile, nrog rau ntau tshaj 1.1 lab tons. Hauv xyoo 2010, tag nrho lub ntiaj teb molybdenum ntau lawm yog 214, 000 tons ntawm molybdenum, ib xyoos ib zaug nce ntawm 12.8 feem pua. Tuam Tshoj cov molybdenum ntau lawm nyob rau hauv lub ntiaj teb no, accounting rau 37.4 feem pua ntawm lub ntiaj teb no ntau lawm nyob rau hauv 2010. Los ntawm Lub ib hlis ntuj mus rau Kaum ib hlis 2011, cov zis ntawm molybdenum concentrate nyob rau hauv Tuam Tshoj mus txog 216, 000 tons, ib xyoo-rau-xyoo nce. 10.99 feem pua.
Xyoo 2010, kev lag luam hlau tsis-ferrous conscientiously siv ntau cov lus qhia thiab cov cai ntawm Party Central Committee thiab State Council, thiab nquag ua raws li "Non-ferrous Metal Industry Adjustment and Revitalization Plan". Kev lag luam tungsten thiab molybdenum smelting kev lag luam maj mam sib sau ua ke nws cov khoom lag luam thiab kev muag khoom rov qab thiab ua tiav kev loj hlob sai thiab ruaj khov. . Kev txiav txim siab los ntawm kev ua haujlwm ntawm 22 lub tuam txhab, xyoo 2010 kuv lub teb chaws tungsten thiab molybdenum smelting tuam txhab muaj lub zog zoo ntawm txoj kev loj hlob thiab qib siab ntawm cov txiaj ntsig hauv kev lag luam. Nrog rau txoj kev loj hlob sai ntawm kev lag luam downstream ntawm tungsten thiab molybdenum smelting, qhov kev thov rau tungsten thiab molybdenum smelting khoom yuav nce ntxiv, thiab kev loj hlob zeem muag ntawm kev lag luam yog qhov zoo.
Tungsten thiab molybdenum yog ob lub ntsiab lus nyob rau hauv tib kem ntawm lub sij hawm. Lawv kuj nthuav tawm tib yam. Ob lub ntsiab lus muaj qhov nruab nrab ntawm 1.5 feem ntawm ib lab hauv lub ntiaj teb crust. Molybdenum yog ib qho khoom noj tseem ceeb rau cov nroj tsuag thiab tsiaj txhu. Hauv cov ntsiab lus siab, molybdenum tuaj yeem ua rau muaj tshuaj lom uas yog qee zaum cov ntaub ntawv los ntawm cov kua qaub los ntawm alkaline tshauv. Tungsten yog ib qho tseem ceeb ntawm cov hlau uas siv rau hauv ntau yam kev lag luam. Nws feem ntau yog mined los ntawm scheelite, hmoov CaWO4, optical channel wolframite (hlau, manganese) WO4. Tungsten raug tso tawm rau hauv ib puag ncig, piv txwv li los ntawm kev siv lub caij ntuj no log tsheb thiab mos txwv. Ib puag ncig tus cwj pwm ntawm tungsten feem ntau tsis paub zoo.
