High alumina cib feem ntau muab faib ua cov siab zoo alumina cib thiab hloov kho siab alumina cib. Ordinary siab aluminium cib xa mus rau cov qauv siv hluav taws xob ntau, thaum hloov kho siab alumina refractory cib feem ntau xa mus rau: high-load mos siab alumina firebricks, micro-expansion siab alumina hluav taws cib, qis creep siab alumina cib thiab phosphate bonded siab alumina refractory cib. . Hom.
1. Ib txwmsiab alumina cib.
Nws lub ntsiab ntxhia muaj pes tsawg leeg yog mullite, corundum thiab iav theem.
Feem ntau yog siv rau hauv ob sab phlu ntawm blast furnaces, kub moj tej tawg rauv, hluav taws xob rauv saum, blast furnaces, reverberatory furnaces, thiab teb kilns. Tsis tas li ntawd, nws kuj yog siv dav hauv qhib hearth regenerative checker cib, plugs rau pouring systems, nozzle cib, thiab lwm yam.
2. High-load mos high-alumina cib.
Piv nrog rau cov zoo tib yam siab alumina cib, qhov txawv yog qhov matrix thiab cov binder ib feem.
(1) Ntxiv rau qhov sib ntxiv ntawm peb lub pob zeb mloog zoo, cov khoom siv alumina siab (finely hauv av siab alumina bauxite, muaj alumina lossis a-Al2O3 hmoov, corundum hmoov) yog tsim nyog qhia raws li kev xav tau ntawm cov tshuaj muaj pes tsawg leeg tom qab tua kaw. rau mullite. , High-aluminium corundum hmoov).
(2) Xaiv cov av nplaum zoo tshaj plaws ua tus neeg sawv cev sib txuas, thiab siv cov av nplaum sib xyaw ua ke lossis mullite bonding agent nyob ntawm ntau yam.
Los ntawm kev siv cov txheej txheem saum toj no, qhov muag kub hauv qab load yog nce los ntawm 50-70 degree .
3. Micro-expansion siab alumina cib
Nws yog tsim los ntawm siab alumina bauxite ua cov khoom siv tseem ceeb, ntxiv nrog peb lub pob zeb concentrates, thiab ua raws li cov txheej txheem ntau lawm ntawm siab alumina cib. Txhawm rau ua kom nws nthuav dav kom tsim nyog thaum siv, tus yuam sij yog xaiv peb lub pob zeb pob zeb thiab nws cov particle loj, thiab tswj qhov kub thiab txias, kom ib feem ntawm cov pob zeb xaiv pob zeb yog mullite, thiab ib feem ntawm peb lub pob zeb pob zeb. seem. Cov pob zeb peb-pob zeb tseem tshuav yog ntxiv mulliteized (thaum thawj lossis theem nrab mulliteized) thaum siv, nrog rau cov tshuaj tiv thaiv o. Cov pob zeb uas tau xaiv peb lub pob zeb yog cov khoom siv zoo dua. Vim hais tias qhov decomposition kub ntawm peb pob zeb minerals txawv. Cov o uas ua los ntawm mullite petrochemicals kuj txawv. Siv cov yam ntxwv no, muaj cov txiaj ntsig zoo sib xws vim qhov sib txawv ntawm kev ua haujlwm kub, compacting lub cib pob qij txha, txhim kho tag nrho cov compactness ntawm bricks, thiab kev txhim kho cov kuj ntawm bricks rau slag nkag.
Plaub, qis creep siab alumina cib
Nrog rau txoj kev loj hlob ntawm cov khoom loj, cov cua kub cua sov thiab kev siv lub neej ntev ntawm cov hlau ua lub tshuab hluav taws xob, cov kev xav tau siab dua tau muab tso rau pem hauv ntej rau cov ntaub ntawv refractory rau kub blast furnaces, xav tau cov ntaub ntawv los tiv thaiv lub sij hawm ntev thermal kev nyuaj siab thiab huab cua kub tsis muaj. tau yooj yim puas. Yog li ntawd, siab alumina cib rau kub moj tej tawg qhov cub yuav tsum muaj ib tug tsawg creep tus nqi. Qhov no ua lub luag haujlwm tseem ceeb hauv lub neej ntev ntawm lub qhov cub kub kub. Lub cev thiab tshuaj ntsuas ntsuas yog raws li nram no:
Yuav kom daws tau nws cov creep tsis kam, cov txheej txheem ntawm kev ntxiv cov zaub mov muaj txiaj ntsig tau txais yuav, thiab cov tshuaj tiv thaiv tsis sib haum yog siv los daws qhov teeb meem. Thaum qhov kub thiab txias yog 1550 degree, 1500 degree, cov additives yog quartz thiab peb pob zeb minerals; Qhov ntsuas kub yog 1450 degree, Ntawm 1400 degree thiab 1350 degree, cov additives yog peb-pob zeb minerals, thiab corundum, a-Al2O3, thiab lwm yam yog qhia raws li; Thaum qhov kub thiab txias yog 1300 degree, 1270 degree, thiab 1250 degree, cov additives yog peb pob zeb minerals. Ntawm lawv, peb pob zeb ntxhia pob zeb, activated alumina, thiab lwm yam yog ntxiv nyob rau hauv daim ntawv ntawm ib tug matrix, thiab tag nrho los yog ze li ntawm tag nrho mulliteization ntawm lub matrix yog tus yuam sij. Vim hais tias ntawm mulliteization ntawm lub matrix, cov ntsiab lus ntawm mullite ntawm cov khoom yuav nce thiab cov ntsiab lus iav theem yuav raug txo. Cov khoom zoo heev thiab cov khoom siv thermal ntawm mullite yog qhov tsim nyog rau kev txhim kho lossis txhim kho kev ua haujlwm siab ntawm cov khoom siv.
Cov kev tshawb fawb tau pom tias ntxiv 15% -35% sillimanite mloog zoo hauv nws cov khoom tuaj yeem tsim cov khoom lag luam siab, qis qis qis siab alumina cib rau blast furnace kub moj tej tawg qhov cub nrog qhov kub siab ntawm 1400-1450 degree . Rau qhov qis-kawg high-alumina cib nrog qhov kub thiab txias ntawm 1500 ~ -1550 degree, ntxiv rau ntxiv qhov tsim nyog ntawm sillimanite, ib qho nyiaj ntawm mullite yuav tsum tau ntxiv; los yog qee cov ntaub ntawv raw ntawm fused corundum thiab silica yog siv.
5. Phosphate bonded siab alumina cib
Nws yog cov khoom siv hluav taws xob sib txuas ua ke ua los ntawm cov qib tshwj xeeb los yog qib qib high-alumina bauxite clinker raws li cov khoom siv tseem ceeb, phosphoric acid tov lossis aluminium phosphate tov raws li cov ntaub ntawv, thiab tom qab tau zoo li lub tshuab ziab khaub ncaws thiab kub-kho ntawm 400-600 degree . Nws yog ib lub cib tsis hlawv. Txhawm rau kom tsis txhob muaj qhov loj me ntawm cov khoom siv thaum siv kub, nws yog ib qho tsim nyog yuav tsum tau ua kom paub cov khoom siv hluav taws xob nthuav dav xws li kyanite, sillimanite, pyrophyllite, silica, thiab lwm yam rau hauv cov khoom xyaw. Piv nrog rau ceramic-bonded raug rho tawm haujlwm siab alumina, nws muaj tev zoo dua, tab sis nws cov load softening kub yog qis dua, thiab nws cov corrosion kuj tsis zoo. Yog li ntawd, ib qho me me ntawm fused corundum mullite, thiab lwm yam yuav tsum tau ntxiv los ntxiv dag zog rau cov matrix. Haum rau cement kilns, hluav taws xob rauv saum thiab ladle thiab lwm yam.
