Ntshiab Molybdenum
Molybdenum yog cov khoom siv tshuaj nrog lub cim Mo. Ntshiab molybdenum tshwm sim raws li cov hmoov dub-grey los yog cov hmoov dub nrog cov xim hlau lossis cov xim dawb-dawb. Nws tsis tshwm sim nyob rau hauv daim ntawv hlau ntshiab. Nws yog feem ntau pom raws li oxide los yog sulfide compounds.
Cov txiaj ntsig ntawm Ntshiab Molybdenum
High purity thiab zoo heev tsis kam mus creep
Lub purity ntawm ntshiab molybdenum yog qhov zoo heev, uas tsis tsuas yog tuaj yeem tiv taus qhov kub thiab txias, tab sis kuj yooj yim rau txheej txheem. Daim ntawv thov yog los tsim crucibles rau tag nrho cov pa txheej txheem nyob rau hauv lub teb ntawm sapphire kev loj hlob. Vim nws tshwj xeeb purity, ntshiab molybdenum tau ua pov thawj nws tus nqi hauv optimizing smelting thiab solidifying ntim.
Zoo dimensional stability thiab zoo heev corrosion kuj
Peb cov agitators tuaj yeem do txhua yam iav yaj sib npaug. Yuav kom ua tiav qhov no, lawv yuav tsum dhau qhov kub thiab txias thiab corrosive iav melts. Nrog rau qhov zoo ntawm qhov ruaj khov, thiab corrosion kuj ntawm hlau thiab iav yaj, ntshiab molybdenum tuaj yeem ua kom muaj kev sib xyaw zoo tshaj plaws thiab kev pab lub neej ntev ntawm cov khoom.
High thermal conductivity thiab tsawg thermal expansion coefficient
Siab zog ceev thiab tam sim no los ntawm lub hwj chim diodes thiab transistors ua kom sov. Cov hlau ntshiab molybdenum thiab nws cov alloys yog cov khoom siv zoo tshaj plaws rau cov khoom siv hluav taws xob vim muaj cov thermal conductivity zoo thiab thermal expansion cov yam ntxwv sib thooj rau cov khoom siv semiconductor. Thaum siv los ua lub hauv paus phaj, ntshiab molybdenum tuaj yeem tso siab tso tawm cua sov.
Vim li cas thiaj xaiv peb
Kev ruaj ntseg zoo
Zhenan muaj kev tswj xyuas nruj heev, suav nrog kev xaiv cov khoom siv raw, tswj kev tsim khoom, tshuaj xyuas cov khoom, ntim zoo thiab xa khoom. Tag nrho cov khoom raug soj ntsuam nruj thiab txhua qhov kev txiav txim raug tshuaj xyuas los ntawm cov txheej txheem cuam tshuam ua ntej xa khoom.
Kev pabcuam tshaj lij
Nrog kev paub dhau los hauv cov ntaub ntawv siab-purity, peb tuaj yeem pab cov neeg siv khoom xaiv cov khoom, tsim cov khoom thiab muab kev txhawb nqa. Peb muaj lub chaw soj nstuam ywj pheej los tsim thiab sim cov ntaub ntawv tshiab thiab muab kev sab laj rau cov neeg siv khoom.
Peb muab cov nqi sib tw tshaj plaws
Zhenan muab cov nqi sib tw tshaj plaws rau ntau yam khoom. Peb tuav kev sib raug zoo nrog cov thawj coj hauv kev lag luam hauv Suav teb kom tau txais cov khoom siv qis thiab cov khoom zoo. Nyob rau tib lub sijhawm, peb tau tsim kom muaj cov saw hlau ua tiav los txo cov nqi, thiab peb ib txwm ua raws li kev tsim khoom loj thiab kev tswj xyuas kev tshawb fawb.
Nyob rau hauv nws cov ntshiab daim ntawv, molybdenum yog ib tug silvery-grey hlau nrog ib tug Mohs hardness ntawm 5.5, thiab tus qauv atomic hnyav ntawm 95.95 g / mol. Nws muaj qhov melting point ntawm 2,623 degree (4,753 degree F); Ntawm cov khoom tshwm sim, tsuas yog tantalum, osmium, rhenium, tungsten, thiab carbon muaj cov ntsiab lus melting ntau dua. Nws muaj ib qho qis tshaj coefficients ntawm thermal expansion ntawm cov khoom siv hlau.
Kwv yees li ntawm 86% ntawm cov ntshiab molybdenum tsim yog siv nyob rau hauv metallurgy, nrog rau tus so siv nyob rau hauv tshuaj siv tshuaj. Kev kwv yees siv thoob ntiaj teb yog cov qauv hlau 35%, stainless hlau 25%, tshuaj 14%, cuab yeej & siab ceev steels 9%, cam khwb cia hlau 6%, molybdenum elemental hlau 6%, thiab superalloys 5%.
Ntshiab molybdenum tuaj yeem tiv taus qhov kub thiab txias yam tsis muaj qhov nthuav dav lossis muag muag, ua rau nws muaj txiaj ntsig zoo nyob rau hauv ib puag ncig ntawm cov cua sov, nrog rau cov tub rog armor, aircraft qhov chaw, hluav taws xob tiv tauj, muaj motors, thiab filaments.
Feem ntau muaj zog steel alloys (piv txwv li, 41xx steels) muaj 0.25% mus rau 8% molybdenum. Txawm tias nyob rau hauv cov me me no, ntau tshaj 43, 000 tonnes ntawm molybdenum yog siv txhua xyoo nyob rau hauv stainless hlau, cuab yeej steels, cam khwb cia hlau, thiab high-temperature superalloys.
Ntshiab molybdenum tseem muaj nuj nqis nyob rau hauv cov hlau alloys rau nws cov corrosion kuj thiab weldability. Molybdenum pab txhawb kev tiv thaiv corrosion rau hom -300 stainless hlau (tshwj xeeb yog hom-316) thiab tshwj xeeb tshaj yog nyob rau hauv lub npe hu ua superaustenitic stainless hlau (xws li alloy AL-6XN, 254SMO thiab 1925hMo). Molybdenum nce lattice strain, yog li ua kom lub zog xav tau kom yaj cov hlau atoms ntawm qhov chaw.
Vim tias nws qhov qis dua thiab tus nqi ruaj khov dua, molybdenum qee zaum siv rau qhov chaw ntawm tungsten. Ib qho piv txwv yog 'M' series ntawm high-speed steels xws li M2, M4 thiab M42 hloov pauv rau 'T' steel series, uas muaj tungsten. Molybdenum kuj tseem siv tau los ua cov nplaim hluav taws tiv thaiv rau lwm cov hlau. Txawm hais tias nws cov ntsiab lus melting yog 2,623 degree (4,753 degree F), molybdenum sai oxidizes ntawm qhov kub siab tshaj 760 degree (1,400 degree F) ua rau nws zoo dua rau siv nyob rau hauv lub tshuab nqus tsev ib puag ncig.
Taw qhia rau 3 Hom Ntshiab Molybdenum
Molybdenum singl-crystal alloy
Ntshiab molybdenum muaj qhov zoo ntawm qhov hloov pauv tsis tshua muaj tawv-nkig, tsis muaj qhov kub thiab qhov kub tsis tshua muaj kev puas tsuaj, kev sib raug zoo nrog cov ntaub ntawv nuclear, thiab kev ua haujlwm siab kub, uas tuaj yeem txhim kho kev ruaj ntseg, kev cia siab, thiab ua haujlwm lub neej. ntawm cov khoom. Yog li ntshiab molybdenum yog dav siv nyob rau hauv high-tech teb xws li electronics, machinery, thiab nuclear zog industries.
Molybdenum rhenium alloy
Vim lub npe hu ua "rhenium effect", cov khoom ntawm molybdenum rhenium alloy tau zoo heev, yog li ntawd lub zog, plasticity, thiab weldability ntawm cov alloy yog ib txhij txhim kho, thiab cov alloy muaj qhov tsis tshua muaj tawv-nkig hloov kub tsis kam. . Yog li ntawd, molybdenum rhenium alloys tau dav siv nyob rau hauv aerospace thiab electronics industries. Cov kev tshawb fawb tau pom tias 11% txog 50% rhenium muaj qhov ua tau zoo tshaj plaws, thiab molybdenum-rhenium alloy nrog 40% mus rau 50% rhenium yog siv ntau dua.
Titanium zirconium molybdenum (TZM) alloy
Lub TZM alloy yog superalloy tsim los ntawm kev ntxiv ib qho nyiaj ntawm titanium thiab zirconium rau molybdenum. TZM alloy muaj qhov zoo ntawm qhov siab melting point, siab zog, zoo elastic modulus, me me coefficient ntawm linear expansion, tsawg vapor siab, zoo hluav taws xob thiab thermal conductivity, muaj zog corrosion kuj, thiab zoo mechanical zog ntawm kub.
Sib piv Kev Ntsuam Xyuas ntawm Ntshiab Molybdenum thiab Pure Tungsten: Nkag siab qhov txawv
Ntshiab Molybdenum:
Ntshiab molybdenum tsuas yog muaj molybdenum atoms, feem ntau nrog purity ntawm 99.95% lossis siab dua. Nws muaj lub siab melting point ntawm 2,623 degree, zoo heev thermal thiab hluav taws xob conductivity, thiab zoo corrosion kuj.
Pure tungsten:
Ntshiab tungsten yog tsim los ntawm tungsten atoms nkaus xwb, feem ntau muaj purity ntawm 99.95% lossis siab dua. Nws muaj qhov tseem ceeb tshaj melting point ntawm 3,422 degree, zoo heev thermal thiab hluav taws xob conductivity, thiab superior corrosion kuj piv rau molybdenum.
Ceev:
Ntshiab molybdenum muaj qhov ceev ntawm kwv yees li 10.2 g / cm³, thaum ntshiab tungsten muaj qhov ceev dua li ntawm 19.3 g / cm³. Qhov ntom ntom dua ntawm tungsten ua rau nws ib qho ntawm cov ntsiab lus tseem ceeb tshwm sim, ua rau nws muaj lub zog tshwj xeeb thiab lub zog ruaj khov.
Melting Point:
Raws li tau hais ua ntej lawm, ntshiab molybdenum muaj qhov melting point ntawm 2,623 degree, thaum ntshiab tungsten muaj qhov melting point ntau dua ntawm 3,422 degree. Lub siab melting cov ntsiab lus ntawm ob cov ntaub ntawv ua rau lawv haum rau high-temperature daim ntaub ntawv.
Lub zog thiab Hardness:
Ntshiab tungsten muaj zog dua thiab hardness piv rau cov ntshiab molybdenum. Tungsten muaj npe nrov rau nws lub zog tensile tshwj xeeb, ua rau nws tsim nyog rau cov ntawv thov uas xav tau kev ua haujlwm zoo heev ntawm qhov kub siab.
Ductility:
Ntshiab molybdenum muaj zoo ductility thiab toughness piv rau ntshiab tungsten. Qhov no ua rau molybdenum ntau zam txim rau kev tsim, xws li dov, dabtsi yog khoov, thiab machining.
Ntshiab Molybdenum:
Vim nws cov thermal conductivity zoo heev, siab melting point, thiab zoo corrosion kuj, ntshiab molybdenum pom cov ntawv thov nyob rau hauv aerospace kev lag luam rau foob pob ua ntxaij nozzles, rauv Cheebtsam, hluav taws xob tiv tauj, thiab tshav kub shields. Nws kuj tseem siv rau hauv kev tsim cov iav thiab ceramics, nrog rau hauv cov khoom siv hluav taws xob thiab hluav taws xob.
Pure tungsten:
Lub zog superior, siab melting point, thiab zoo heev corrosion kuj ntawm ntshiab tungsten ua rau nws haum rau ntau yam kev siv. Nws yog dav siv nyob rau hauv kev lag luam teeb pom kev zoo rau filaments hauv incandescent qij thiab halogen teeb. Tungsten kuj tseem siv rau hauv kev tsim cov khoom cua sov, hluav taws xob tiv tauj, X-ray raj, thiab hluav taws xob tiv thaiv.
Ob qho tib si molybdenum thiab tungsten yog qhov nyuaj rau tshuab vim lawv cov hardness siab. Txawm li cas los xij, cov ntshiab molybdenum feem ntau yooj yim dua rau tshuab piv rau tungsten vim nws qhov qis dua. Cov cuab yeej tshwj xeeb thiab cov txheej txheem yuav tsum tau ua kom tiav cov machining thiab qhov kev xav tau ntawm ob qho khoom siv.
1. Sib tsoo
Lub tshuab sib tsoo crushes pob zeb qhov loj ntawm football mus rau qhov loj ntawm pob zeb, tom qab ntawd siv lub pob zeb txhawm rau txo cov khoom mus rau qhov loj ntawm cov hmoov zoo nkauj.
2. Flotation
Hauv cov txheej txheem flotation, av ore / gangue hmoov yog tov nrog cov kua reagent thiab inflated. Lower-density ores nce nyob rau hauv ua npuas ncauj thiab tau sau, thaum tsis muaj txiaj ntsig gangue dab dej thiab muab pov tseg. Nyob rau hauv txoj kev no, flotation cais cov khoom siv hlau los ntawm cov khoom siv tsis zoo los yog molybdenite los ntawm tooj liab sulfide nyob rau hauv rooj plaub ntawm tooj liab / ntshiab molybdenum.
Qhov tshwm sim MoS2 concentrate muaj nyob nruab nrab ntawm 85% thiab 92% MoS2. Yog tias tsim nyog, cov kua qaub leaching tuaj yeem siv los ua kom yaj cov impurities ntxiv xws li tooj liab thiab txhuas.
3. Calcination
MoS2 concentrate yog ci hauv huab cua ntawm qhov kub ntawm 500-650 degree thiab hloov mus rau hauv cov xuab zeb ntshiab molybdenum calcined (MoO3) (tseem hu ua industrial molybdenum trioxide). Cov tshuaj tiv thaiv yog raws li nram no:
2MoS2 + 7O2 → 2MoO3 + 4SO2
MoS2 + 6MoO3 → 7MoO2 + 2SO2
2MoO2 + O2 → 2MoO3
Lub calcining yog ua nyob rau hauv ib tug multi-chamber rauv, nyob rau hauv uas ntshiab molybdenum concentrate yog ntxiv los ntawm lub sab saum toj ntawm lub cub tawg, txav mus rau hauv lub opposite kev taw qhia rau cov roj cua tshuab los ntawm lub hauv qab, thiab cov airflow yog rhuab. Qhov loj rotary rake caj npab tas li tig lub sparry molybdenum mloog zoo los txhawb cov tshuaj lom neeg cov tshuaj tiv thaiv, thiab emission ntawm ci rauv roj yog tshem tawm los ntawm ib tug desulfurization system los yog txiv qaub ntxhua khaub ncaws kom tshem tawm sulfur dioxide.
Cov tau txais kev lag luam molybdenum oxide feem ntau muaj tsawg kawg yog 57% molybdenum thiab tsawg dua 0.1% sulfur. Kwv yees li ntawm 40-50% ntawm molybdenum yog siv rau hauv daim ntawv no, feem ntau yog cov khoom alloying hauv steelmaking.
Ntshiab Molybdenum Chemical Properties
Ntshiab molybdenum yog cov hlau hloov pauv nrog electronegativity ntawm 2.16 ntawm Pauling nplai. Nws tsis pom pom tshwm sim nrog oxygen lossis dej ntawm chav tsev kub, tab sis raug tawm tsam los ntawm halogens thiab hydrogen peroxide. Tsis muaj zog oxidation ntawm molybdenum pib ntawm 300 degree (572 degree F); oxidation ntau tshwm sim ntawm qhov kub siab tshaj 600 degree, ua rau molybdenum trioxide. Zoo li ntau cov hlau hloov hnyav dua, molybdenum qhia me ntsis inclination los tsim ib qho cation hauv cov kua dej, txawm hais tias Mo3+ cation paub tias tsim nyob rau hauv kev tswj xyuas kom zoo.
Gaseous molybdenum muaj xws li diatomic hom Mo2. Cov molecule ntawd yog ib tug singlet, nrog ob unpaired electrons nyob rau hauv kev sib raug zoo orbitals, ntxiv rau 5 pa bonds. Qhov tshwm sim yog kev sib deev kev sib raug zoo.
Daim ntawv thov ntawm ntshiab molybdenum nyob rau hauv steel teb:
Nyob rau hauv cov hlau teb, ntshiab molybdenum yog tsuas yog siv rau zus tau tej cov hlau alloy, stainless hlau, cuab yeej steel, high-speed steel, cam khwb cia hlau, thiab yob. Kev siv cov molybdenum ua ib qho additive tuaj yeem txhim kho lub zog thiab toughness, corrosion kuj, thiab hnav tsis kam ntawm steel, txhim kho hardenability, weldability, thiab kub-ua hauj ntawm hlau. Kev tsim ntawm molybdenum alloy los ntawm kev ntxiv lwm cov ntsiab lus rau molybdenum, xws li molybdenum lanthanum alloy thiab TZM alloy, muaj kev ua tau zoo dua li cov ntshiab molybdenum.
Daim ntawv thov ntawm ntshiab molybdenum nyob rau hauv cov tshuaj:
Hauv kev lag luam tshuaj, cov ntshiab molybdenum tuaj yeem siv los ua cov roj nplua nyeem, catalysts, pigments, nplaim retardants thiab haus luam yeeb suppressants, thiab corrosion inhibitors ntawm organic polymer. Cov khoom tseem ceeb muaj xws li molybdenum dioxide, molybdenum daj, molybdate, ammonium paramolybdate.
Kev siv cov ntshiab molybdenum hauv hluav taws xob thiab hluav taws xob:
Molybdenum muaj hluav taws xob zoo conductivity thiab kub-kub kuj. Nws thermal expansion coefficient zoo ib yam li iav. Nws yog dav siv nyob rau hauv zus tau tej cov tub ntxhais hlau, txhuas hlau, nuv, thiab lwm yam khoom ntawm kauv filament. Molybdenum hlau kuj yog cov khoom siv hluav taws xob zoo tshaj plaws rau lub tshuab txiav, uas tuaj yeem txiav ntau yam hlau thiab carbide. Nws cov txheej txheem yog ruaj khov, uas tuaj yeem txhim kho qhov tseeb ntawm cov pwm.
Kev siv cov ntshiab molybdenum hauv kev kho mob, tsiaj txhu, thiab kev ua liaj ua teb:
Ntshiab molybdenum yog ib qho ntawm cov kab tseem ceeb hauv tib neeg lub cev. Qhov tsim nyog ntawm molybdenum tuaj yeem txhawb txoj kev loj hlob ntawm tib neeg lub cev, txhim khu kev cia cov pa oxygen hauv lub cev thiab inhibit qog. Ammonium molybdate yog siv los ua cov khoom xyaw nquag ntawm cov tshuaj. Hauv cov tsiaj lub cev, molybdenum yog molybdenum enzyme muaj pes tsawg leeg. Ntxiv cov molybdenum additives rau pub tuaj yeem ua tiav lub hom phiaj ntawm kev ua kom tau raws li cov kev xav tau ntawm cov tsiaj. Molybdenum kuj yog ib qho tseem ceeb ntawm cov kab mob rau cov nroj tsuag kev loj hlob. Seeding siv ammonium molybdenum tuaj yeem ua rau kom muaj txiaj ntsig zoo ntawm paj.
Zhenan New Metal Co., Ltd. yeej ib txwm tsom rau kev tshawb fawb thiab kev tsim kho, tsim khoom thiab muag khoom ntawm cov khoom siv hlau. Peb lub Hoobkas npog thaj tsam ntawm 30, 000 square meters thiab muaj tag nrho cov khoom siv niaj hnub tsim. Nws muaj ob lub chaw tsim khoom hlau loj thiab lub chaw kuaj khoom siv hlau. Qhov zoo ntawm cov khoom siv hlau tsim yog kev ntseeg siab.
Peb Daim Ntawv Pov Thawj
Nug cov lus nug
Peb nyob nraum kev ntshiab molybdenum manufacturers thiab lwm tus neeg nyob hauv Suav teb, tshwj xeeb hauv kev muab cov kev pabcuam zoo. Peb sov siab txais tos koj mus yuav cov ntshiab molybdenum ntawm tus nqi sib tw los ntawm peb lub hoobkas. Tiv tauj peb kom paub meej ntxiv.