Magnesia cib

Alkaline refractories nrog cov ntsiab lus magnesium oxide ntau dua 90% thiab periclase ua lub hauv paus tseem ceeb theem.

1. Lub refractoriness ntawm magnesia cib yog siab li 2000 ℃, thiab qhov muag muag kub nyob rau hauv load tsis hloov pauv ntau nyob ntawm qhov melting point ntawm cov theem kev khi thiab cov kua theem tsim tawm ntawm qhov kub. Feem ntau, qhov hnyav ua kom sov pib kub ntawm magnesia cib yog 1520 ～ 1600 ℃, thaum lub siab purity magnesium muaj qhov hnyav ua kom sov pib txog li 1800 ℃.

2. Lub pob muag muag pib kub ntawm magnesia cib tsis txawv ntau los ntawm qhov kub hnyiab. Qhov no yog vim tias theem tseem ceeb muaj pes tsawg leeg ntawm magnesia cib yog periclase, tab sis cov periclase muaju hauv cov magnesia cib tsis ua rau cov txheej txheem network, tab sis ua ke. Maas. Hauv cov cib magnesia zoo ib yam, cov qib qis melting silicate xws li forsterite thiab magnesite pyroxene feem ntau yog siv ua ke. Txawm hais tias periclase siv lead ua nplej ua cov magnesia cib muaj cov ntsiab lus melting ntau dua, lawv yaj ntawm li 1500 ° C. Cov theem silicate tshwm sim, thiab viscosity ntawm nws cov kua theem yog me me ntawm qhov kub thiab txias. Yog li ntawd, nws cuam tshuam tias qhov ntsuas kub hloov pauv thiab kub poob ntawm cov cib magnesia zoo ib yam tsis txawv ntau, tab sis muaj qhov sib txawv loj los ntawm qhov cuam tshuam. Qhov hnyav-pib ua kom sov qhov kub ntawm purity magnesia cib tuaj yeem ncav cuag 1800 ° C, feem ntau vim tias kev sib xyaw ua ke ntawm periclase nplej yog forsterite lossis dicalcium silicate, thiab kub yaj ntawm eutectic tsim los ntawm nws thiab MgO siab. , Lub lattice lub zog nruab nrab ntawm cov muaju loj thiab cov yas deformation ntawm qhov kub siab me me, thiab cov khoom siv lead ua tau zoo ua ke.

3. Cov kab nthuav dav nthuav tawm ntawm magnesia cib ntawm 1000 ～ 1600 ℃ feem ntau yog 1.0%～ 2.0%, thiab nws yog kwv yees lossis linear. Hauv cov khoom siv hluav taws xob, cov cua sov ua kom sov ntawm magnesia cib yog qhov thib ob tsuas yog cov pa roj carbon uas muaj cov cib. Nws nce nrog qhov kub thiab txias. Siab thiab qis. Nyob rau hauv qhov xwm txheej ntawm 1100 ° C dej txias, tus naj npawb ntawm cov cua sov poob ntawm magnesia cib tsuas yog 1 txog 2 zaug. Magnesium cib muaj zog tiv taus alkaline slags muaj CaO thiab ferrite, tab sis tsis muaj zog rau acidic slags muaj SiO2. Rau

4. Yog li, nws yuav tsum tsis txhob sib cuag ncaj qha nrog cov cib silica thaum siv, thiab yuav tsum tau muab cais los ntawm cov cib nruab nrab. Hauv chav sov, qhov ua tau zoo ntawm magnesia cib yog qhov tsawg heev, tab sis nyob rau qhov kub siab, nws qhov kev coj ua tsis tuaj yeem tsis quav ntsej. Kev ua tau zoo ntawm magnesia cib sib txawv heev vim yog cov khoom sib txawv, cov cuab yeej tsim khoom, thiab kev siv thev naus laus zis siv. Rau

5. Magnesia cib tau siv dav hauv kev tsim cov hlau ua kom sov, cov cua sov ferroalloy, sib xyaw cov cua sov, cov hlau tsis yog hlau rauv, cov cub tawg rau cov khoom siv hauv tsev, thiab cov tsim kho tshiab hauv cov iav iav vim lawv qhov ua tau zoo kub thiab muaj zog tiv taus alkaline slag. Cov cua sov sib hloov, kub kub ua kom lub qhov cub tawg thiab lub qhov cub tawg hauv kev lag luam refractory.

6. Feem ntau, nws tuaj yeem faib ua ob pawg: sintered magnesia cib (tseem hu ua cib magnesia raug rho tawm) thiab sib xyaw ua ke magnesia cib (tseem hu ua cib magnesia tsis tau ua haujlwm). Magnesia cib nrog kev ua kom huv siab thiab kub ua kom kub tau hu ua kev sib txuas ncaj qha magnesia cib vim kev sib chwv ncaj qha ntawm periclase nplej; cib ua los ntawm fused magnesia raws li raw khoom hu ua fused ua ke magnesia cib.

7. Alkaline refractory khoom nrog periclase raws li lub ntsiab siv lead ua theem. Cov khoom muaj cov yam ntxwv ntawm kev kub siab ua kom lub zog muaj zog, ua haujlwm tsis zoo slag, muaj zog tiv thaiv yaig, thiab ntim ruaj khov ntawm qhov kub.

8. Magnesia cib muaj qhov ua kom rov zoo dua qub, zoo alkali slag tsis kam, pib kub rau qhov muag muag hauv qab, tab sis tsis zoo thermal poob siab tsis kam. Sintered magnesia cib yog ua los ntawm cib magnesia cib ua raw khoom. Tom qab raug tsoo, ua pob, kneaded thiab zoo li tus, nws raug rho tawm ntawm qhov kub siab ntawm 1550 txog 1600 ° C. Qhov ntsuas kub ntawm cov khoom ua kom huv yog siab dua 1750 ° C. Cov cib magnesia uas tsis tau muab pov tseg yog tsim los ntawm kev ntxiv cov tshuaj sib txuas uas tsim nyog rau magnesia, tom qab ntawd sib tov, moulding, thiab kom qhuav.

9. Feem ntau siv rau steelmaking alkaline qhib hearth, hluav taws xob rauv hauv qab thiab cov cua sov phab ntsa, txuas ruaj khov ntawm cov pa hloov pauv, cov hlau tsis kub hnyiab rauv, lub qhov cub kub kub, calcined magnesia cib thiab cement rotary kiln meem, rauv taws hauv qab thiab cua sov ntawm cua sov Cov nplaim hluav taws phab ntsa, cov cib ntsuas nyob hauv tus tsim ntawm lub iav qhov cub, thiab lwm yam.

1. Kev faib tawm ntawm magnesia cib

Feem ntau, nws tuaj yeem faib ua ob pawg: sintered magnesia cib (tseem hu ua cib magnesia raug rho tawm) thiab sib xyaw ua ke magnesia cib (tseem hu ua cib magnesia tsis tau ua haujlwm). Magnesia cib nrog purity siab thiab kub kub yog hu ua ncaj qha sib raug zoo magnesia cib vim kev sib cuag ncaj qha ntawm periclase siv lead ua nplej; cib ua los ntawm fused magnesia raws li raw khoom hu ua fused ua ke magnesia cib.

2. Kev faib tawm thiab siv cov cib magnesia

Magnesia cib muaj qhov ua kom rov zoo dua qub, ua haujlwm tsis zoo rau alkaline slag, pib kub rau qhov muag muag hauv qab, tab sis tsis zoo thermal poob siab tsis kam. Sintered magnesia cib yog ua los ntawm cib magnesia cib ua raw khoom. Tom qab raug tsoo, ua pob, kneaded thiab zoo li tus, nws raug rho tawm ntawm qhov kub siab ntawm 1550 txog 1600 ° C. Qhov ntsuas kub ntawm cov khoom ua kom huv yog siab dua 1750 ° C. Cov cib magnesia uas tsis tau muab pov tseg yog tsim los ntawm kev ntxiv cov tshuaj sib txuas uas tsim nyog rau magnesia, tom qab ntawd sib tov, moulding, thiab kom qhuav.

Thib peb, kev siv cov cib magnesia

Feem ntau siv rau steelmaking alkaline qhib hearth, hluav taws xob rauv hauv qab thiab phab ntsa, ruaj khov txheej ntawm cov pa hloov pauv, cov hlau tsis muaj hlau rauv ua kom sov, qhov kub hauv qhov cub tawg, calcined magnesia cib thiab cement rotary kiln hauv ob sab phlu, qab hauv qab thiab phab ntsa ntawm cua sov rauv, cib rau regenerator ntawm iav kiln, thiab lwm yam.

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