Molybdenum:

• Chinhu chinongoitika chega chakaonekwa muna 1778 naCarl Wilhelm Scheele, musayendisiti wekuSweden akawanawo oxygen mumhepo.
• Iine imwe yepamusoro-soro yekunyungudika yezvese zvinhu asi density inongova 25% yakakura iron.
• Inowanikwa mune akasiyana ores, asi molybdenite chete (MoS2) ndiyo inoshandiswa mukugadzirwa kwezvinhu zvinotengeswa zvemolybdenum.
• Iine yakaderera coefficient yekuwedzera kwekupisa kwechero mainjiniya zvinhu.

Zvinobva kupi:

• Migodhi mikuru yemolybdenum inowanikwa muCanada, USA, Mexico, Peru neChile.Muna 2008, iyo ore reserve base yakasvika 19,000,000 tonnes (mabviro: US Geological Survey).China ine matura makuru anoteverwa neUSA neChile.
• Molybdenite inogona kuitika seyo yega mineralization mumuviri weore, asi inowanzobatanidzwa nemaminerari e sulfide emamwe masimbi, kunyanya mhangura.

Inogadziriswa sei:

• Iyo ore inocherwa inopwanyika, pasi, yakasanganiswa nemvura uye inofefeterwa munzira yekuyangarara kuti iparadzanise zvicherwa zvesimbi kubva padombo.
• Iyo inokonzeresa concentrate ine pakati pe85% ne92% inoshandiswa mumaindasitiri molybdenum disulfide (MoS2).Kugocha izvi mumhepo pa500 kusvika 650 °C kunoburitsa yakagochwa molybdenite concentrate kana RMC (Mo03), inozivikanwawo setechnical Mo oxide kana tech oxide.Imwe 40 kusvika 50% ye molybdenum inoshandiswa mune iyi fomu, kunyanya sechinhu chinosanganisa muzvigadzirwa zvesimbi.
• 30-40% yeRMC kugadzirwa inogadziriswa kuita ferromolybdenum (FeMo) nekuisanganisa ne iron oxide uye kuderedza ne ferrosilicon nealuminium mune thermite reaction.Iyo inoguma ingots inopwanyika uye inoongororwa kuti ibudise inodiwa FeMo particle size.
• Inenge 20% yeRMC inogadzirwa pasi rose inogadziriswa kuva nhamba yezvigadzirwa zvemakemikari zvakadai se pure molybdic oxide (Mo03) uye molybdates.Ammonium molybdate mhinduro inogona kushandurwa kuita chero nhamba yezvigadzirwa zvemolybdate uyezve kugadziridzwa necalcinations inoburitsa yakachena molybdenum trioxide.
• Molybdenum simbi inogadzirwa neaviri-nhanho yehydrogen kuderedza maitiro kuti ipe yakachena molybdenum hupfu.

Chii chinoshandiswa kune:

• Inenge 20% yemolybdenum itsva, inogadzirwa kubva mucherwa inoshandiswa kugadzira molybdenum-giredhi simbi isina tsvina.
• Masimbi einjiniya, turusi uye simbi yekumhanya kwazvo, simbi yakakandwa uye superalloys pamwe chete inoverengera imwe 60% yekuwedzera molybdenum kushandiswa.
• Chikamu che20% chasara chinoshandiswa muzvigadzirwa zvakakwidziridzwa zvakaita selubricant giredhi molybdenum disulfide (MoS2), molybdenum chemical compounds uye molybdenum metal.

Zvinhu zvinobatsira uye kushandiswa:

Simbi isina ngura

• Molybdenum inonatsiridza kushora uye kusimba kwekushisa kwese simbi isina tsvina.Iyo ine yakanyanya kunaka mhedzisiro pagomba uye crevice corrosion kuramba mune chloride-ine mhinduro, zvichiita kuti ive yakakosha mumakemikari uye mamwe magadzirirwo ekushandisa.
• Molybdenum-ine Stainless simbi inopesana nekuora uye inowanzoshandiswa mukuvaka, kuvaka nekuvaka, ichipa dhizaini inochinjika uye nekuwedzera dhizaini hupenyu.
• Zvigadzirwa zvakasiyana-siyana zvinogadzirwa kubva kune molybdenum-ine simbi isina tsvina yekuwedzera kudzivirirwa kubva pakuora, kusanganisira zvikamu zvekugadzirisa, denga, masvingo emaketeni, handrails, liner dziva rekushambira, magonhi, magetsi emagetsi uye sunscreens.

Superalloys

Izvi zvinosanganisira corrosion resistant alloys uye yakakwirira tembiricha alloys:

• Corrosion resistant nickel-based alloys ane molybdenum anoshandiswa mumashandisirwo akazarurwa kunzvimbo dzinoparadza zvakanyanya munzvimbo dzakasiyana siyana dzemaindasitiri ezvekuita uye maapplication, kusanganisira flue gasi desulfurization zvikamu zvinoshandiswa kubvisa sarufa kubva mukubuda kwemagetsi chiteshi.
• High tembiricha alloys ingave yakasimba-mhinduro yakasimbiswa, iyo inopa kuramba kukuvadzwa kunokonzerwa nekukwira kwekushisa kwakanyanya, kana zera-kuomeswa, izvo zvinopa rimwe simba pasina zvakanyanya kudzikisa ductility uye inoshanda zvakanyanya mukudzikisa coefficient yekuwedzera kwekupisa.

Alloy steels

• Ingori shoma shoma ye molybdenum inovandudza kuomarara, inoderedza hasha embrittlement uye inowedzera kuramba kurwiswa kwehydrogen uye sulfide kusagadzikana kupaza.
• Iyo yakawedzerwa molybdenum inowedzerawo yakakwira tembiricha simba uye inovandudza weldability, kunyanya mune yakakwirira simba yakaderera alloy (HSLA) simbi.Idzi simbi dzepamusoro dzinoshandiswa mumhando dzakasiyana-siyana, kubva kumotokari dzakareruka kusvika pakuvandudza kushanda zvakanaka muzvivako, mapaipi nemabhiriji, kuchengetedza zvose huwandu hwesimbi inodiwa uye simba uye kubudiswa kwakabatana nekugadzirwa kwayo, kutakura uye kugadzirwa.

Zvimwe zvinoshandiswa

Mienzaniso yakasarudzika yekushandiswa kwemolybdenum inosanganisira:

• Molybdenum-based alloys, iyo ine simba rakanakisa uye kugadzikana kwemichina pakupisa kwakanyanya (kusvika 1900 ° C) munzvimbo dzisina oxidizing kana vacuum.Yavo yakakwirira ductility uye kuoma kunopa kushivirira kukuru kwekusakwana uye brittle kuputsika kupfuura ceramics.
• Molybdenum-tungsten alloys, inozivikanwa nekusarudzika kuramba kune yakanyungudutswa zinc
• Molybdenum-25% rhenium alloys, inoshandiswa kune rocket engine components uye liquid metal heat exchangers iyo inofanira kuva ductile pane tembiricha.
• Molybdenum yakashongedzwa nemhangura, yekugadzira yakaderera kuwedzera, yakakwirira conductivity electronic circuit mabhodhi
• Molybdenum oxide, inoshandiswa mukugadzirwa kwezvinokonzeresa zvepetrochemical uye makemikari maindasitiri, akaiswa zvakanyanya mukunatswa kwemafuta asina kuchena kuderedza sarufa yezvinhu zvakanatswa.
• Kemikari molybdenum zvigadzirwa zvinoshandiswa mupolymer musanganiswa, corrosion inhibitors uye yakakwirira-inoshanda lubricant magadzirirwo.