Cov yam ntxwv ntawm corundum hauv cov ntaub ntawv refractory feem ntau muaj cov yam ntxwv hauv qab no:
1. Muaj zog thiab hnav tsis kam;
2. Kev tiv thaiv kev yaig thiab kev nkag mus ntawm cov kua qaub slag: Lub ntsiab siv lead ua theem ntawm ntau hom ntawm nws yog a-Al2O3, uas muaj kev tiv thaiv zoo rau yaig thiab nkag mus ntawm cov kua qaub slag. Cov slag tsim nyob rau hauv cov txheej txheem hlau yog feem ntau acidic slag nrog siab SiO2 cov ntsiab lus thiab cov ntsiab lus CaO tsawg. Kev lag luam hlau feem ntau siv Al2O3-raws li refractories li hauv ob sab phlu, xws li high-alumina cib rau blast furnace lub cev, Al2O3-SiC-C-raws li refractories (castables thiab ramming cov ntaub ntawv) rau tapping trench, thiab taphole av nplaum (Al2O3-SiO2-SiC). -C zoo), Al2O3-SiC-C zoo refractories (castables thiab refractory cib) rau ladle thiab torpedo tso tsheb hlau luam, thiab lwm yam.
3. Ntau yam ntawm cov ntaub ntawv thiab cov khoom: Lub ntsiab siv lead ua theem ntawm nws yog a-Al2O3, uas tuaj yeem sib xyaw nrog ntau cov oxides thiab tsis-oxide theem, txhim kho qee yam ntawm nws tus kheej, xws li thermal shock resistance, slag resistance (acidic lossis alkaline) ) aggressiveness, thiab lwm yam. Nws yog compounded nrog SiO2 los tsim corundum-mullite refractory, compounded nrog MgO los tsim corundum-spinel refractory, compounded nrog zircon xuab zeb (ZrO2 thiab SiO2) los ua Al2O3-SiO{{12 }}ZrO2 refractory, thiab silicon carbide thiab Carbon composite forms Al2O3-SiC-C refractories, thiab lwm yam.;
4. Muaj ntau hom kev sib txuas, nws muaj kev sib raug zoo nrog ntau yam kev sib khi, thiab ntau txoj kev sib khi tuaj yeem siv tau, xws li kub-kub sintering, kub-kub bonding, thiab lwm yam, uas tuaj yeem muab cov khoom sib txawv.
Nws feem ntau muab faib ua ob pawg hauv cov khoom siv refractory: cov khoom zoo li tus thiab cov khoom tsis zoo.
Cov khoom tseem ceeb yog:
1. Cov khoom siv hluav taws xob: Al2O398 feem pua lossis ntau dua, cov khoom sib txuas ntawm tus kheej-theem sintered high-purity khoom, cov txheej txheem kev sib txuas yog feem ntau corundum, thiab ib qho me me ntawm mullite, thiab lwm yam, feem ntau yog siv hauv petrochemical industrial gasifiers, carbon dub reactors, Gas ua rauv, ammonia decomposition rauv, ob-theem hloov kho, siab kub thiab ultra-siab kub rauv nyob rau hauv refractory ceramics kev lag luam, blast furnace nyob rau hauv metallurgical kev lag luam, thiab lwm yam.
2. Modified high-alumina cib: ①Low-creep high-alumina cib: Rau high-alumina bricks nrog ib tug creep kub ntawm 1500 degree -1550 degree, ntxiv ib co fused nws thiab silica raw cov ntaub ntawv yuav ua rau tsawg-ceeb npaum li cas siab. - alumina cib. ② Phosphate-bonded siab alumina cib: siv super los yog thawj-qib siab alumina bauxite clinker ua cov khoom siv tseem ceeb, phosphoric acid tov lossis aluminium phosphate tov raws li cov ntaub ntawv, ntxiv me me ntawm fused nws, mullite, thiab lwm yam. matrix, ntawm 400- Chemically bonded refractory khoom ua los ntawm kev kho cua sov ntawm 600 degree . Feem ntau yog siv rau hauv cov hlau ua kub kub qhov cub, cement kiln, hluav taws xob rauv lub ru tsev, ladle, thiab lwm yam.
3. Corundum-mullite cov khoom: ua los ntawm fused dawb los yog tabular corundum, fused mullite thiab lwm yam raw khoom, los ntawm batching, mixing, high-pressure molding, thiab firing nyob rau hauv ib tug high-kub kiln. Nws yog tsuas yog siv nyob rau hauv high-temperature firing kilns nyob rau hauv lub ceramic kev lag luam thiab nws cov rooj tog zaum xws li laub phaj thiab setter daim hlau.
Cov khoom tsis zoo:
Ntau yam nws cov ntaub ntawv raw tuaj yeem siv los ua cov khoom sib xyaw thiab hmoov rau kev npaj cov khoom amorphous refractory. Raws li kev sib txawv binders thiab kev tsim kho, lawv tuaj yeem muab faib ua pawg hauv qab no:
Refractory castables, refractory yas, refractory ramming khoom, refractory mortar: rau pob qij txha nyob rau hauv nws refractory masonry
