Cov khoom siv refractory yog dab tsi? Nws feem ntau yog hais txog cov ntaub ntawv thiab cov khoom lag luam uas feem ntau yog tsim los ntawm cov khoom siv tsis yog xim hlau thiab muaj qhov refractoriness tsis tsawg dua 1580 degree. Refractoriness yog qhov taw qhia tseem ceeb. Nws yog hais txog qhov kub thiab txias ntawm cov khoom siv mus txog qhov tshwj xeeb ntawm softening thiab deformation nyob rau hauv qhov kev txiav txim siab kub. Nws cim cov khoom ua haujlwm rau qhov kub thiab txias. Cov khoom siv refractory yog cov khoom siv yooj yim uas ua haujlwm rau cov cuab yeej siv hluav taws xob kub. Lawv muaj kev sib raug zoo nrog kev txhim kho cov cuab yeej siv hluav taws xob kub, tshwj xeeb tshaj yog kev lag luam kub kub smelting. Lawv muaj kev sib koom siab, txhawb nqa ib leeg, thiab txhim kho ua ke. Raws li qee qhov xwm txheej, qhov zoo thiab ntau yam ntawm cov khoom siv refractory ua lub luag haujlwm tseem ceeb hauv kev tsim cov cuab yeej siv hluav taws xob kub. Hauv qab no peb feem ntau qhia txog kev faib cov khoom siv refractory:
1. Kev faib tawm raws li tshuaj lom neeg thiab ntxhia muaj pes tsawg leeg
(1) Silicon oxide refractory khoom. Nws yog cov khoom siv refractory nrog SiO2 ua cov khoom tseem ceeb.
(2) Aluminium silicate refractory khoom. Nws yog cov khoom siv refractory nrog Al2O2 thiab SiO2 raws li nws cov tshuaj muaj pes tsawg leeg. Raws li Al2O3 thiab SiO2 cov ntsiab lus hauv cov khoom, lawv tau muab faib ua peb pawg: cov ntaub ntawv semi-siliceous refractory, av nplaum refractory cov ntaub ntawv thiab high-aluminium refractory cov ntaub ntawv.
Aluminium silicate refractory cov ntaub ntawv tseem tuaj yeem muab npe thiab cais raws li lawv cov ntxhia hauv cov khoom, xws li cov khoom siv mullite, corundum mullite khoom; lawv kuj tuaj yeem raug npe thiab cais raws li cov khoom siv raw, xws li cov khoom siv sillimanite, cov khoom siv thiab cov khoom siv, thiab cov khoom siv kyanite.
(3) Corundum refractory khoom. Nws yog cov khoom siv refractory nrog Al2O3 raws li nws cov tshuaj lom neeg muaj pes tsawg leeg thiab corundum theem raws li nws lub ntsiab siv lead ua theem.
(4) Magnesium refractory khoom. Nws yog cov khoom siv refractory muaj li ntawm MgO ua cov khoom tseem ceeb thiab periclase ua cov ntxhia tseem ceeb.
Dolomite refractory khoom. Nws yog ib hom khoom siv refractory nrog calcium oxide (ω (CaO))=40% ~ 60%) thiab magnesium oxide (ω (MgO)=30% ~ 42%) ua cov khoom tseem ceeb.
(6) Olivine refractory khoom. Nws yog cov khoom siv refractory nrog ω (MgO)=35% ~ 62%, MgO/SiO2 (mass ratio) fluctuating ntawm 0.95 ~ 2.00, thiab muaj li ntawm forsterite li lub ntsiab ntxhia.
(7) Spinel refractory khoom. Nws yog ib hom khoom siv refractory feem ntau yog tsim los ntawm spinel.
(8) Carbonaceous refractory khoom. Cov ntaub ntawv zoo li no muaj qee cov pa roj carbon lossis carbide.
(9) Zirconium-muaj cov ntaub ntawv refractory. Cov ntaub ntawv no txhua tus muaj qee qhov nyiaj ntawm zirconia.
(10) Cov khoom siv tshwj xeeb refractory. Nws yog ib hom khoom siv refractory uas muaj cov ntshiab refractory oxides, carbides, silicides thiab borides thiab cermets.
2. Kev faib tawm los ntawm kev tsim khoom
Ntxiv nrog rau tej yam ntuj tso ore txiav thiab ua, cov khoom tsim los ntawm tib neeg feem ntau muab faib ua cov khoom zoo li tus thiab amorphous cov ntaub ntawv raws li lawv cov yam ntxwv molding. Raws li cov txheej txheem kev kho cua sov sib txawv, lawv tau muab faib ua cov khoom tsis raug tua, cov khoom raug rho tawm haujlwm thiab cov khoom cam khwb cia. Ntawm lawv, cov khoom zoo li raug rho tawm haujlwm tau ntev tau ua ntau tshaj plaws thiab siv cov ntaub ntawv refractory.
3. Kev faib tawm raws li cov khoom lag luam
Qhov zoo ntawm cov ntaub ntawv refractory feem ntau yog ntsuas raws li lawv cov khoom, yog li cov ntaub ntawv refractory feem ntau muab faib ua pawg raws li lawv cov khoom.
Lawv tau muab faib ua peb pawg raws li lawv cov qib refractory: cov khoom siv refractory zoo tib yam, nrog rau qib refractory ntawm 1580 ~ 1770 degree; Advanced refractory khoom, nrog ib tug refractory degree ntawm 1770 ~ 2000 degree; cov khoom tshwj xeeb qib refractory, nrog rau qib refractory ntawm 2000 degree lossis siab dua.
Raws li lawv cov khoom siv tshuaj, lawv tuaj yeem muab faib ua cov khoom siv acidic, nruab nrab thiab alkaline refractory.
Raws li lawv qhov ntom ntom lossis thermal conductivity, lawv tuaj yeem muab faib ua cov khoom hnyav refractory thiab cov khoom siv hluav taws xob los yog cov ntaub ntawv insulating refractory.
4. Kev faib tawm raws li cov khoom zoo thiab qhov loj me
Cov ntaub ntawv refractory tuaj yeem muab faib ua cov qauv cib, cov cib tshwj xeeb zoo li cov cib, cov cib tshwj xeeb thiab lwm yam khoom raws li cov duab thiab qhov loj ntawm cov khoom. Raws li cov duab sib txawv thiab qhov ntau thiab tsawg, cov khoom siv refractory muaj cov lej sib txawv, thiab cov duab thiab qhov loj ntawm txhua tus lej cib raug txiav txim.
5. Kev faib tawm raws li nws daim ntawv thov
Cov ntaub ntawv refractory tuaj yeem muab faib raws li lawv daim ntawv thov rau hauv cov ntaub ntawv refractory rau coke ncu, cov ntaub ntawv refractory rau cov tshuab tawg, cov ntaub ntawv refractory rau steel-ua rauv, cov ntaub ntawv refractory rau nruam casting, cov ntaub ntawv refractory rau non-ferrous hlau smelting, cov ntaub ntawv refractory rau cov cement kiln. , thiab cov khoom siv refractory rau iav kiln. tos. Raws li daim ntawv thov kev faib tawm, txhua yam ntawm cov khoom siv refractory muaj cov khoom sib txawv. Lub cev thiab tshuaj lom neeg kev ua tau zoo Performance index ntawm txhua hom ntawm cov khoom raug txiav txim.
Los ntawm cov saum toj no, peb tuaj yeem muaj kev nkag siab meej ntawm kev faib cov khoom siv refractory. Cov kev faib tawm no tsis tsuas yog pab peb nkag siab zoo dua thiab xaiv cov khoom siv refractory, tab sis kuj tseem cuam tshuam txoj haujlwm tseem ceeb thiab lub luag haujlwm ntawm cov khoom siv refractory hauv kev txhim kho cov cuab yeej siv hluav taws xob kub. Nrog rau kev nce qib ntawm high-temperature technology, kev tshawb fawb thiab kev tsim kho thiab kev siv cov ntaub ntawv refractory tseem yuav txuas ntxiv tsim kho tshiab thiab txhim kho, muab kev txhawb nqa zoo dua rau kev txhim kho cov cuab yeej siv hluav taws xob kub.
Lub kiln hauv kev lag luam activated carbon yog lub lag luam niche hauv kev lag luam refractory. Ib lub cub tawg yuav tsum muaj ntau hom cib thiab ib qho me me. Ntau lub tuam txhab refractory tsis kam siv lub zog thiab kev siv nyiaj rau kev tshawb fawb thiab kev tsim kho. Zibo Longketer New Materials Co., Ltd. Peb tshwj xeeb hauv kev muab ntau yam khoom siv refractory thiab tau txais kev lees paub thiab qhuas los ntawm cov neeg siv khoom.
