Dab tsi yog Qhov Kev Siv Tseem Ceeb Ntawm Molybdenum Hlau?
Feb 23, 2024
Molybdenum yog ib qho nyiaj-grey hlau uas feem ntau yog cov khoom lag luam ntawm tooj liab thiab tungsten mining. Vim nws cov khoom tshwj xeeb, molybdenum muaj ntau yam kev siv.
Molybdenum hlau muaj qhov siab melting point ntawm 4730 degrees Fahrenheit, uas tso cai rau siv ntau yam. Cov hlau feem ntau yog muag raws li cov hmoov grey uas yog compressed nyob rau hauv kev kub siab los ua cov khoom xws li alloying agents thiab catalysts rau kev lag luam tshuaj.
Tus nqi ntawm molybdenum tau ua tsis tau zoo nyob rau xyoo tas los no, tab sis cov kws tshuaj ntsuam tau zoo siab tias nws qhov kev ua tau zoo yuav txhim kho raws li qhov kev thov rau kev siv hluav taws xob txuas ntxiv mus thiab kev lag luam hlau rov qab.
Txhawm rau kom nkag siab zoo dua yav tom ntej rau molybdenum, nws yog ib qho tseem ceeb kom nkag siab txog kev siv loj ntawm molybdenum. Hauv qab no yog cov ntsiab lus luv luv ntawm tsib ntawm cov kev siv loj no.
01. Alloys
Cov qauv hlau tso nyiaj rau 55% ntawm kev siv molybdenum. Cov hlau no ua rau muaj zog ntawm cov hlau ntawm qhov kub thiab txias thiab ua kom nws tiv taus qhov siab ntawm 300, 000 phaus ib square inch. Molybdenum kuj pab tiv thaiv corrosion, uas ua rau nws yog ib qho tseem ceeb ntawm cov khoom siv hlau stainless. Txog 25 feem pua ntawm molybdenum yog siv hauv kev lag luam stainless hlau.
Stainless hlau alloys uas muaj molybdenum yog siv nyob rau hauv kev lag luam kws tshuaj thiab tshuaj nroj tsuag, raws li zoo raws li nyob rau hauv lub tanker tsheb.
Ntxiv rau qhov no, molybdenum tuaj yeem ua alloyed nrog hlau los tsim cov khoom siv tho, saws, dav hlau cav thiab lub zog tsim hluav taws xob. Chromium thiab molybdenum alloyed steel los xij yog siv rau mufflers thiab lwm yam tsheb.
Molybdenum-alloyed cam khwb cia hlau yog siv los tsim lub tog raj kheej taub hau, lub cev muaj zog blocks thiab tso pa tawm manifolds, uas tso cai rau lub tsheb cav khiav kub, yog li txo cov pa roj carbon monoxide. Lwm qhov kev siv yog hauv kev sib tsoo thiab crushing khoom.
02. Catalysts
Molybdenum kuj tseem siv tau rau kev siv tshuaj lom neeg. Kwv yees li 14% ntawm molybdenum yog siv los ua ib qho catalyst thiab lubricant hauv kev lag luam tshuaj. Piv txwv li, cov hlau yog siv los ua ib qho catalyst nyob rau hauv cov roj refineries los pab tshem tawm cov sulfur ntawm natural gas thiab refined petroleum khoom. Cov txheej txheem, hu ua hydrodesulfurization, suav nrog cua sov thiab kev kub ntxhov, ua ke nrog molybdenum oxide catalyst nrog alumina carrier thiab cobalt.
Qee zaum nickel thiab molybdenum yog siv los hloov cobalt rau cov khoom noj nyuaj dua. Cov roj uas muaj sulfur tsawg yog cov roj huv huv, thiab ntau lub tebchaws, suav nrog Canada thiab Tebchaws Meskas, xav kom cov tsheb siv ultra-low-sulfur diesel rau kev tsheb. Molybdenum kuj tseem ua lub luag haujlwm hauv kev tsim cov polymers thiab yas.
03. Lubricants
Molybdenum tuaj yeem ua ke nrog leej faj los ua molybdenum disulfide, uas yuav pab lubricate ob lub tshuab hluav taws xob, tsheb kauj vab coaster brakes, mos txwv, thiab caij ski wax. Nws kuj yog siv rau hauv cov roj rau pob thiab cov menyuam bearings hauv kev tsim khoom, mining thiab kev thauj mus los kev lag luam.
Molybdenum disulfide tuaj yeem ua rau kub thiab siab tiv taus vim tias nws yog cov khoom siv hluav taws xob hauv hluav taws xob. Cov roj-soluble molybdenum-sulfur compounds thiophosphates thiab thiocarbamates tiv thaiv cav los ntawm hnav, oxidation thiab corrosion.
04. Pigments
Molybdenum kuj tseem siv los ua cov xim tiv thaiv corrosion hauv cov xim thiab dyes. Ib qho xim, ua los ntawm zinc molybdate, yog siv rau hauv cov xim pleev xim rau inhibit corrosion thiab stabilize xim; Piv txwv li, nws yog siv los pleev xim rau cov hlau nto ntawm cov nkoj.
Molybdate-txiv kab ntxwv pigments yog tsim los ntawm cov hlau lead, lead chromate, lead molybdate thiab lead sulfate. Cov xim no sawv ntsug rau lub teeb fading thiab huab cua thaum lub sijhawm. Molybdenum txiv kab ntxwv yog siv nyob rau hauv cov xim, inks, yas thiab roj hmab khoom, thiab ceramics.
05. Cov chiv
Molybdenum yog ib qho tseem ceeb ntawm cov enzyme nitrogen kho, uas muaj nyob rau hauv nitrogen-kho cov kab mob uas ua rau nitrogen los ntawm huab cua rau cov nroj tsuag. Sodium molybdate, cov hmoov dawb crystalline, yog siv los ua cov chiv rau cov nroj tsuag xws li zaub qhwv thiab taum kom nce qoob loo.