Hauv cov txheej txheem kev lag luam kub siab xws li kev tsim cov cement, kev ua hlau, thiab kev tsim iav, cov ntaub ntawv refractory yog qhov tseem ceeb rau kev ruaj khov ua haujlwm thiab kev tswj tus nqi.Magnesia alumina spinel cib, yog qhov kev xaiv zoo tshaj plaws rau cov neeg siv khoom lag luam thoob ntiaj teb, sawv tawm nrog kev ruaj khov thermal zoo heev, kev tiv thaiv corrosion, thiab kev phooj ywg ib puag ncig.Phau ntawv qhia no piav qhia txog cov ntsiab lus tseem ceeb ntawm magnesia alumina spinel cib rau koj cov kev xav tau kev lag luam.
1. Kev txhais ntawm Magnesia Alumina Spinel Cib
Cov cib Magnesia alumina spinel yog cov khoom siv alkaline refractory uas muaj cov magnesium oxide siab (MgO, 80% -92%) thiab aluminium oxide (Al₂O₃, 3% -14%). Lawv cov theem crystalline tseem ceeb - periclase thiab magnesia-alumina spinel (MgO · Al₂O₃) - tsim cov qauv ruaj khov los ntawm kev sintering kub siab. Raws li lwm txoj hauv kev tsis muaj chromium rau cov refractories ib txwm muaj, cov cib magnesia alumina spinel zam kev tso pa tawm hexavalent chromium lom, ua raws li cov qauv ib puag ncig thoob ntiaj teb.
2. Cov Khoom Tseem Ceeb ntawm Magnesia Alumina Spinel Cib
Cov yam ntxwv tseem ceeb ntawm magnesia alumina spinel cib muaj xws li:
- ① Kev ruaj khov zoo heev ntawm kev kub hnyiab, tiv taus 12-20 lub voj voog dej txias ntawm 1100 ° C;
- ② Kev ua haujlwm kub siab heev, khav txog 2135 ° C melting point thiab refractoriness nyob rau hauv load> 1700 ° C;
- ③ Muaj zog tiv taus corrosion thiab slag tiv thaiv alkaline slags, acidic gases, thiab alkali hlau;
- ④ Lub zog ruaj khov, nrog rau qhov ceev ntawm qhov loj ≥2.90 g / cm³ thiab lub zog zom txias ≥45 MPa.
3. Cov Ntawv Thov Tseem Ceeb ntawm Magnesia Alumina Spinel Cib
Cov cib magnesia alumina spinel zoo tagnrho rau cov chaw kub thiab txias heev: thaj chaw hloov pauv ntawm lub qhov cub ua los ntawm cov cement rotary, cov ntaub thaiv hlau, cov khoom siv rov ua dua tshiab ntawm lub qhov cub iav, thiab cov ntaub thaiv rau lub qhov cub petrochemical. Lawv qhov kev hloov pauv tau ua rau cov cib magnesia alumina spinel haum rau ob qho tib si alkaline thiab sib xyaw ua ke.
4. Cov Lus Qhia Xaiv rau Magnesia Alumina Spinel Cib
Thaum xaiv cov cib magnesia alumina spinel, tsom mus rau peb lub ntsiab lus tseem ceeb: phim qhov sib piv MgO/Al₂O₃ rau koj cov txheej txheem huab cua, txheeb xyuas cov ntsiab lus tseem ceeb (qhov ceev ntawm cov khoom loj, kev tiv thaiv thermal shock), thiab xyuas cov ntawv pov thawj zoo ntawm cov neeg muag khoom.Xaiv cov cib magnesia alumina spinel uas tau sim rau koj qhov xwm txheej kev lag luam tshwj xeeb kom ntseeg tau tias muaj kev ua tau zoo tshaj plaws thiab lub neej ua haujlwm ntev.
Cov cib magnesia alumina spinel sib xyaw ua ke kev ua tau zoo thiab kev ruaj khov, ua rau lawv yog kev nqis peev ntse rau cov lag luam niaj hnub no uas muaj qhov kub siab. Xaiv cov cib magnesia alumina spinel kom raug los txhim kho kev ntseeg tau ntawm cov khoom siv thiab txo cov nqi kho.
Lub sijhawm tshaj tawm: Lub Kaum Ob Hlis-29-2025
