Refractory yog cov khoom tseem ceeb ntawm cov iav rauv, uas muaj kev txiav txim siab ntawm iav zoo, kev siv zog thiab cov nqi khoom. Lub neej yav tom ntej ntawm iav melting tshuab yog nyob ntawm qee qhov ntawm kev nce qib ntawm refractory ntau lawm technology thiab cov khoom zoo.
1. AZS cib, siab zirconium cib
Rau AZS hluav taws xob melting bricks, cov txheej txheem ntau lawm yog los txhim kho lawv cov corrosion kuj thiab hnav tsis kam. Ntxiv nrog rau kev siv cov txheej txheem yaj oxidation, cov ntsiab lus carbon ntawm cov khoom raug txo mus rau 0.005 feem pua, thiab cov iav theem nag lossis daus kub nce mus rau 1450 degree . Cov txheej txheem casting thiab annealing kuj tau txhim kho, thiab tam sim no muaj peev xwm tsim fused AZS nrog me me los yog tsis muaj shrinkage. Siab ZrO2 zirconia cib nrog ZrO2 cov ntsiab lus Ntau dua lossis sib npaug ntawm 90 muaj qhov zoo thermal poob siab, xws li ZrO295 thiab SiO21.4. Lub siab ZrO295 zirconia cib muaj stabilizer ntawm 3.7, pom meej ntom ntawm 4.7 g / cm3, porosity ntawm 18.4, thiab chav tsev kub thermal shock tsis kam ntawm 1400 degree C (ib ntus ntawm 15 feeb), uas tuaj yeem ncav cuag 15-20 sij hawm. Fused cam khwb cia zirconia cib tsim nyob rau hauv Nyiv, nrog cov ntsiab lus zirconia ntawm 90, yog hu ua ZFC cib. Lawv cov corrosion kuj zoo dua li ntawm AZS cib nrog ZrO2 cov ntsiab lus ntawm 40. Ntawm 1500 ~ 1600 degree, tom qab 16 teev, tsis muaj iav theem nag lossis daus, thiab iav muaj kuab paug tsawg heev. Tom qab 40 zaug ntawm thermal shock tsis kam ntawm 800 ~ 1250 degree, tsis muaj qhov tawg.
2. Chrome cib thiab chrome cib
Lub compact chrome oxide bricks tsim los ntawm isostatic nias yuav siv tau rau sab phab ntsa, caj dab los yog lwm yam eroded qhov chaw ntawm E iav thiab C iav tso tsheb hlau luam, thiab cov kev pab cuam lub neej yuav ncav cuag 6 mus rau 7 xyoo. Nyob rau hauv xyoo tas los no, chromium muaj cov khoom lag luam tau ua tiav tshiab. Piv txwv li, Cr2O3 ntxiv rau hauv AZS cib los ua Al2O3-ZrO2-SiO2-Cr2O3 refractory. Ntawm qhov kub thiab txias, Cr2O3 cov ntaub ntawv yaj nrog Al2O3 ntawm ib sab, thiab Cr2O3 yog cov khoom kub melting point. Raws li Cr2O3 nkag mus rau lub iav theem ntawm lub cib, lub viscosity ntawm lub iav theem yog nce, uas ua rau kom lub exudation kub ntawm lub iav theem, thiab zoo heev txhim kho cov kuj rau iav corrosion ntawm iav khoom. Ib lub tuam txhab Asmeskas tau tsim ib qho kev sib koom ua ke fused cam khwb cia AZS / Cr2O3 refractory. Nws cov tshuaj muaj pes tsawg leeg thiab lub cev muaj zog yog qhov zoo heev. Piv nrog rau cov khoom qub Al2O3 / Cr2O3, cov khoom siv hluav taws xob txhua xyoo raug txo los ntawm 4, cov zis tau nce los ntawm 15, thiab tus nqi txo los ntawm 3.75. Cov iav zoo tsis cuam tshuam. Hom cib no tuaj yeem tsim los ntawm tshuab nias, phau ntawv ramming lossis isostatic nias, thiab tom qab ntawd sintered ntawm qhov kub thiab txias.
3. Alkaline cib
Germany has been widely used in regenerator walls and swans through direct combination of 1800 degree sintered high-purity bricks and alkaline bricks. It has introduced a new material, named Rubinaiez, with chemical composition of MgO75, ZrO213.5 and SiO29.5. It is the combination of zircon and magnesia bricks. In the early stage of sintering, the structure of zirconium silicate bricks reacts with magnesium oxide. A layer of magnesium is formed around the square magnesite particles. With olivine and zirconia as the protective layer, this structure greatly improves the alkali resistance and sulfate resistance of the brick, and the regenerator in the middle of the grid brick has a good effect.
4. Olivine magnesia cib
Olivine khi theem muaj zog tshwj xeeb los tiv thaiv scouring khoom. Cov cuab yeej tiv thaiv scouring ntawm magnesia cib tuaj yeem txhim kho los ntawm kev nce cov ntsiab lus ntawm olivine magnesium nyob rau hauv lub sij hawm khi ntawm magnesia cib. Yog li ntawd, qhov sib ntxiv ntawm 20 hom forsterite nplua nyob rau hauv magnesia bricks tuaj yeem tiv thaiv kev tsim ntawm magnesia hais thiab txo qhov kev yaig ntawm forsterite bonding matrix. Tus nqi ntawm cib yog qhov tsawg, thiab nws yog dav siv nyob rau hauv nruab nrab ntawm daim phiaj ntawm lub regenerator ntawm iav rauv txawv teb chaws.
5. Barite olivine cib
Xav tias olivine muaj kev tiv thaiv zoo corrosion thiab tsis txaus thermal poob siab tsis kam, thermal poob siab tsis kam ntawm cib tuaj yeem txhim kho tau zoo los ntawm kev qhia barite hauv qib kev sib txuas. Barite feldspar yog tsim thaum lub sij hawm calcination thiab tsuas yog muaj nyob rau hauv lub neej matrix theem. Thaum cov ntsiab lus ntawm barite feldspar yog 15 thiab qhov ua haujlwm kub yog li 1250 degree, kev ua haujlwm ntawm silica yog qhov zoo tshaj plaws. Kev tshawb fawb qhia tau hais tias barite feldspar tiv taus alkali thiab sulfate nres.
6. Unshaped refractory
Daim ntawv thov ntawm unshaped refractories nyob rau hauv iav kilns kuj yog ib txoj kev loj hlob qauv. Nyob rau hauv UK, refractory pob zeb precast blocks yog siv los tsim lub tshav kub cia chamber, checkered cib hauv qab koov, flue, me me cub tawg txhawb phaj, burner, thiab lwm yam, uas zoo heev txo cov pob qij txha ntawm lub cub tawg qauv, txhim kho lub cub tawg lub tsev ceev thiab shortens lub caij txias kho. ERSOL nyob rau hauv Fabkis yog ib tug unshaped refractory series ua los ntawm ER1681 fused hais raws li lub ntsiab tivthaiv. Nws yog siv rau hauv qab ntawm lub tank ua ke nrog cov fused cib, uas muaj kev tiv thaiv zoo heev rau iav corrosion, Thiab qhov nyiam ntawm npuas thiab pob zeb tsim tsis muaj zog. Hauv qab ntawm qee cov iav kilns hauv Nyij Pooj tau ua los ntawm cov khoom siv amorphous. Kev tshawb fawb theoretical ntawm refractories siv nyob rau hauv iav kilns txawv teb chaws tsom rau yuav ua li cas ntxiv txhim kho cov iav corrosion thiab mechanical zog, thiaj li yuav txuas ntxiv lub neej ntawm lub cub tawg.
