Cov yam ntxwv tseem ceeb ntawm cov khoom siv refractory
High Melting Point: Cov khoom siv refractory feem ntau muaj cov ntsiab lus melting siab heev, ua rau lawv nyob ruaj khov hauv qhov chaw kub kub. Piv txwv li, lub melting point ntawm zoo tib yam refractory bricks yog nyob ib ncig ntawm 1700 degree, thaum lub melting point ntawm ib co tshwj xeeb refractory ntaub ntawv yuav ua tau siab tshaj li 2000 degree.
High thermal stability: cov ntaub ntawv refractory tsis tuaj yeem ua rau thermal expansion, contraction lossis lwm yam deformation ntawm qhov kub thiab txias, thiab tuaj yeem tiv taus qhov kub thiab txias ib puag ncig ntev yam tsis muaj kev puas tsuaj rau lawv cov qauv.
Lub zog siab: Nws tseem tuav lub zog txhua yam nyob rau hauv qhov kub thiab txias thiab tsis yooj yim puas los ntawm kev cuam tshuam thiab kev thauj khoom.
Tshuaj corrosion kuj: Nws muaj corrosion kuj zoo rau acidic, alkaline thiab nruab nrab slag, roj thiab kua hlau, thiab tsis yooj yim corroded los ntawm cov tshuaj nyob rau hauv ib puag ncig kub.
Zoo thermal conductivity thiab thermal rwb thaiv tsev: Nyob ntawm cov kev xav tau sib txawv ntawm daim ntawv thov, cov ntaub ntawv refractory tuaj yeem muaj cov thermal conductivity zoo lossis thermal rwb thaiv tsev kom tau raws li cov kev tswj xyuas thermal hauv cov txheej txheem sib txawv.
Kev faib tawm tseem ceeb ntawm cov khoom siv refractory
Classified los ntawm cov tshuaj muaj pes tsawg leeg
Acid refractory khoom Silica bricks: Lub ntsiab tivthaiv yog silicon dioxide (SiO2), uas yog resistant rau acid slag thiab acid gas corrosion. Av nplaum cib: Muaj cov aluminosilicate siab (Al2O3·2SiO2), haum rau cov cua kub kub.
Alkaline refractory khoom Magnesia cib: Lub ntsiab tivthaiv yog magnesium oxide (MgO), uas tiv taus alkaline slag thiab kub corrosion. Chrome magnesia cib: muaj chromium oxide (Cr2O3) thiab magnesium oxide (MgO), thiab muaj qhov kub thiab txias tsis kam thiab corrosion kuj.
Cov khoom siv hluav taws xob tsis zoo siab alumina cib: Cov khoom tseem ceeb yog alumina (Al2O3), uas tiv taus kub thiab tshuaj tua kab mob. Silicon carbide cib: Muaj cov silicon carbide (SiC), uas muaj cov hardness siab thiab zoo thermal conductivity.
Kev faib tawm los ntawm daim ntawv
Cov ntaub ntawv refractory refractory cib: xws li siab alumina cib, silica cib, magnesia cib, thiab lwm yam, ua rau cov duab ruaj khov. Refractory block: loj lossis tshwj xeeb zoo li cov khoom siv refractory.
Unshaped refractory cov ntaub ntawv Refractory castables: nchuav thiab tsim thaum lub sij hawm tsim kho, muaj aggregates thiab binders. Refractory ramming khoom: hmoov refractory khoom siv rau ramming thiab shaping.
Refractory spray txheej: Cov khoom siv refractory tsim los ntawm cov txheej txheem txau. Refractory txheej: Refractory txheej khoom siv rau saum npoo ntawm cov khoom siv.
Classified los ntawm kev siv
Ordinary refractory ntaub ntawv yog siv nyob rau hauv dav industrial kilns, xws li siab alumina cib, av nplaum cib, thiab lwm yam. tshwj xeeb refractory khoom Silicon carbide khoom: xws li silicon carbide cib, siv nyob rau hauv high-kub kilns, tshav kub exchangers, thiab lwm yam. Zirconia khoom: xws li raws li zirconium bricks, haum rau ultra-siab kub thiab corrosive ib puag ncig. Alumina fiber ntau cov khoom: xws li alumina fiber boards, siv rau kub rwb thaiv tsev. High-temperature structural refractory cov ntaub ntawv yog siv rau cov yam ntxwv qhov chaw uas tiv taus high-temperature loads thiab mechanical impacts, xws li hluav taws xob rauv hauv ob sab phlu, high-temperature kiln rooj tog, thiab lwm yam. Refractory rwb thaiv tsev cov ntaub ntawv sib sib zog nqus refractory cib: xws li high-aluminium lightweight cib, siv rau lub rwb thaiv tsev txheej ntawm industrial furnaces. Refractory fiber ntau: xws li txhuas silicate fiber ntau, siv rau kev rwb thaiv tsev kub thiab kev txuag hluav taws xob.
Common refractory khoom
1. High alumina cib Lub ntsiab tivthaiv: Alumina (Al2O3) Cov yam ntxwv: Kub melting point: feem ntau tshaj 1750 degree. Zoo compressive zog thiab thermal shock kuj. Muaj zog acid thiab alkali tsis kam thiab slag corrosion kuj. Daim ntawv thov: dav siv nyob rau hauv cov ntaub ntawv ntawm high-temperature industrial khoom xws li blast furnaces, kub moj tej tawg rauv, hluav taws xob furnaces, qhib-hearth furnaces, converters thiab iav kilns.
2. Silica cib Cov khoom tseem ceeb: silicon dioxide (SiO2) Cov yam ntxwv: Kub melting point: txog 1700 degree. Zoo ntim ruaj khov thiab thermal poob siab tsis kam ntawm qhov kub thiab txias. Nws muaj zoo corrosion kuj tiv thaiv acidic slag thiab roj. Daim ntawv thov: Feem ntau yog siv rau hauv ob sab phlu coke ncu, iav kilns, ceramic kilns thiab acidic high kub khoom.
3. Magnesia bricks Lub ntsiab Cheebtsam: Magnesium oxide (MgO) Yam ntxwv: Kub melting point: tshaj 2800 degree. Zoo alkali tsis kam thiab slag corrosion kuj. Siab zog thiab zoo thermal shock stability. Daim ntawv thov: Feem ntau siv rau hauv ob sab phlu ntawm cov khoom siv xws li hluav taws xob furnaces, converters, ladles thiab refining furnaces hauv kev lag luam steel.
4. Magnesia-alumina cib Cov khoom xyaw tseem ceeb: Magnesium oxide (MgO) thiab alumina (Al2O3) Cov yam ntxwv: Kub melting point: tshaj 2000 degree. Nws muaj zoo thermal poob siab tsis kam thiab alkali slag corrosion kuj. Zoo mechanical zog thiab hnav tsis kam. Daim ntawv thov: dav siv nyob rau hauv ob sab phlu ntawm steel-ua rauv, hluav taws xob arc rauv, cement kilns thiab lwm yam khoom siv.
5. Zirconium cib Cov khoom tseem ceeb: Zirconium dioxide (ZrO2) Cov yam ntxwv: Cov ntsiab lus melting siab: txog 2700 degree. Zoo thermal shock kuj thiab mechanical zog. Kev ruaj ntseg tshuaj zoo heev ntawm qhov kub thiab txias. Daim ntawv thov: Feem ntau yog siv rau hauv iav kilns, kub kub furnaces thiab tshwj xeeb refractory khoom.
6. Silicon carbide cib Cov khoom tseem ceeb: silicon carbide (SiC) Cov yam ntxwv: siab melting point: txog 2700 degree. Zoo heev thermal conductivity thiab hnav tsis kam. Siab zog thiab antioxidant zog. Daim ntawv thov: Feem ntau siv rau hauv cov khoom siv hauv ob sab phlu xws li aluminium smelting electrolyzers, high-temperature kilns, khib incinerators, thiab high-temperature heat exchangers.
7. Chrome magnesia cib Cov khoom xyaw tseem ceeb: Chromium oxide (Cr2O3) thiab magnesium oxide (MgO) Cov yam ntxwv: Kub melting point: tshaj 2000 degree. Zoo heev tiv thaiv slag yaig thiab thermal shock kuj. Zoo kub kub mechanical zog. Daim ntawv thov: Feem ntau yog siv rau hauv ob sab phlu ntawm lub qhov cub tawg, converters, hluav taws xob rauv thiab lwm yam khoom siv hauv kev lag luam steel.
8. Aluminium silicate fiber Cov khoom tseem ceeb: alumina (Al2O3) thiab silicon dioxide (SiO2) Cov yam ntxwv: Kub melting point: txog 1800 degree. Zoo heev thermal rwb thaiv tsev zog thiab thermal stability. Lub teeb yuag, tsis tshua muaj thermal conductivity thiab zoo thermal shock kuj. Daim ntawv thov: dav siv los ua cov khoom siv rwb thaiv tsev rau cov khoom siv hluav taws xob, cov khoom siv hluav taws xob, cov kav dej kub thiab cov khoom siv.
9. High aluminium castable Main tivthaiv: Alumina (Al2O3) Cov yam ntxwv: siab melting point thiab zoo compressive zog. Zoo heev thermal shock kuj thiab hnav tsis kam. Nws yog ib qho yooj yim los tsim thiab tuaj yeem siv los kho cov kab ntawm cov duab nyuaj. Daim ntawv thov: Siv rau hauv ob sab phlu kho thiab kev tsim kho ntawm ntau yam high-temperature industrial khoom, xws li blast furnaces, hluav taws xob rauv thiab boilers, thiab lwm yam.
10. Lub teeb ci refractory cib Cov khoom xyaw tseem ceeb: cov khoom sib txawv ntawm cov khoom siv refractory (xws li alumina, silicon, magnesium) Cov yam ntxwv: Tsawg ntom thiab zoo thermal rwb thaiv tsev. High compressive zog thiab thermal shock kuj. Yooj yim rau txheej txheem thiab tsim. Daim ntawv thov: Dav siv nyob rau hauv thermal rwb thaiv tsev txheej, cov ntaub ntawv thaub qab thiab cov khoom siv rwb thaiv tsev rau cov khoom siv hluav taws xob.
Hauv kev lag luam kub kub, kev xaiv cov khoom siv refractory yog qhov tseem ceeb vim tias tsis muaj ib qho khoom siv refractory tuaj yeem hloov mus rau txhua yam kev ua haujlwm. Feem ntau, ib tus xav tau cov khoom siv refractory nrog qis thermal conductivity kom nws tuaj yeem tswj tau cov cua sov hauv qhov cub. Txawm li cas los xij, qee zaum, cov khoom siv refractory nrog cov thermal conductivity siab kuj yuav tsum tau. Piv txwv li, nyob rau hauv kev tsim ntawm kev tiv thaiv muffle furnaces nyob rau hauv ib co ceramic kiln, nyob rau hauv thiaj li yuav tiv thaiv combustion gases nkag mus rau hauv lub ceramic, nws yog tsim nyog los hloov cov cua kub ntau npaum li sai tau mus rau lub ceramic. Lub sijhawm no, cov khoom siv hluav taws xob ceramic xws li silicon carbide feem ntau yog siv los ua lub qhov cub muffle. Kev xaiv cov ntaub ntawv refractory yuav tsum ua tib zoo xav txog ntau yam kom ua tiav kev lag luam zoo tshaj plaws thiab kev ua haujlwm zoo.
