Xaiv cov qib siab zoo alumina castable txiav txim siab seb puas muaj lub tshuab hluav taws xob hauv ob sab hauv muab cov kev pabcuam refractory txhim khu kev qha lossis raug kev txom nyem ntxov ntxov thaum ntxov thermal shock thiab tshuaj tua kab mob. Rau cov thawj coj ntawm lub qhov cub, cov neeg ua haujlwm petrochemical, thiab cov neeg ua haujlwm saib xyuas, qhia meej ntawm 55%, 65%, thiab 75% Al2O3 monolithic formulations los mus rau kev khiav hauj lwm kub, aggregate matrix ceev, thiab mechanical zog kev loj hlob. Ntawm Topower Refractory, peb engineers thiab muab ntom ntom hydraulic-bonded siab alumina refractory castables tsim los tiv thaiv kev ua haujlwm ntawm 1350℃txog 1600℃thoob plaws kev xav tau thermal installation thoob ntiaj teb.
Cov Ntsiab Lus Qhia Txog Qhov Tseeb
Standard Commercial Qib: HAC-55 (Al2O3 >= 55%), HAC-65 (Al2O3 >= 65%), and HAC-75 (Al2O3 >= 75%), raws li calcined bauxite thiab fused alumina aggregates.
Bulk Density & Strength: Bulk density 2.20 to 2.55 g/cm3; dried cold crushing strength (110°C x 24h) >= 40 to 60 MPa; fired strength (1400°C x 3h) >= 50 mus rau 75 MPa.
Tswj Dej Ntxiv: Gauging dej nruj tswj ntawm 8.0% thiab 10.0% rau cov pa kev co tso; tau tshaj steel fiber reinforcement.
Factory Direct Sourcing: Tau ntim rau hauv 25 kg multi-ply ya raws-pov thawj hnab ntawv lossis 1000 kg UV-resistant bulk hnab ntawm tshav kub-kho export pallets. Lub sij hawm coj mus kuaj 7 mus rau 12 hnub FOB Qingdao / Tianjin.
Dab tsi yog High Alumina Castable?
Muab los ua cov khoom siv premixed monolithic refractory, siab alumina castable combines high-qib calcined bauxite aggregate, nplua calcined alumina muab tub lim, thiab tshwj xeeb hydraulic calcium aluminate cement binder. Mixed with clean potable water on-site, it achieves fluid placement through vibration or rodding, curing into a dense, joint-free lining without requiring preliminary kiln pre-firing.
Tsis zoo li cov pob zeb refractory uas vam khom rau cov khoom sib tsoo uas muaj kev cuam tshuam rau molten slag nkag thiab thermal expansion kev nyuaj siab, cov monolithic refractory linings tsim nruam kev teeb meem. Lawv tau siv dav hauv cov cement rotary kiln preheaters thiab tertiary cua ducts, steel dov reheating furnaces, khib nyiab incinerator combustion chambers, thiab non-ferrous melting furnace ru tsev. Thaum zoo anched thiab kho, standardhigh alumina castable cov ntaub ntawvxa tshwj xeeb abrasion tsis kam, qauv load bearing, thiab thermal spalling kuj.
Technical Specifications: HAC-55, HAC-65, thiab HAC-75 Sib piv
Cov tshuaj muaj pes tsawg leeg thiab lub cev kev ua tau zoo ntawm high-alumina refractory formulations sib txawv nrog purity purity, matrix grading, thiab cement binder proportions. Hauv qab no yog cov kev soj ntsuam xyuas tsis zoo los ntawm peb cov kab ntau lawm:
| Technical Property / Parameter | HAC-55 (Lub luag haujlwm txheem) | HAC-65 (Lub luag haujlwm nruab nrab) | HAC-75 (Lub luag haujlwm hnyav) | Test Standard |
|---|---|---|---|---|
| Al2O3 Cov ntsiab lus (%) | >= 55.0 | >= 65.0 | >= 75.0 | ASTM C114 |
| Fe2O3 Cov ntsiab lus (%) | <= 2.5 | <= 2.0 | <= 1.8 | ASTM C114 |
| CaO Cov ntsiab lus (%) | 3.5 - 5.0 | 3.0 - 4.5 | 2.5 - 4.0 | ASTM C114 |
| Qhov kub thiab txias (degree) | 1400 | 1500 | 1600 | TS EN ISO 528 |
| Qhov ntom ntom tom qab ziab (g / cm3) | 2.20 - 2.30 | 2.35 - 2.45 | 2.50 - 2.60 | ASTM C134 |
| Kev ntsuas dej xav tau (%) | 9.0 - 10.5 | 8.5 - 9.5 | 8.0 - 9.0 | Lab Consistency |
| CCS tom qab ziab @ 110℃(MPa) | >= 40.0 | >= 50.0 | >= 60.0 | ASTM C133 |
| CCS tom qab tua hluav taws @ 1100℃(MPa) | >= 45.0 | >= 55.0 | >= 65.0 | ASTM C133 |
| CCS tom qab tua hluav taws @ 1400℃(MPa) | >= 50.0 | >= 60.0 | >= 75.0 | ASTM C133 |
| Modulus ntawm Rupture @ 110℃(MPa) | >= 6.0 | >= 7.5 | >= 9.0 | ASTM C133 |
| Permanent Linear Hloov @ 1400℃(%) | -0.3 rau +0.1 | -0.2 rau +0.2 | -0.2 rau +0.3 | ASTM C113 |
| Thermal conductivity @ 400℃(W / m·K) | 1.10 - 1.25 | 1.25 - 1.40 | 1.45 - 1.65 | ASTM C 201 Cov Lus Qhia |
Lus Cim: Cov qauv kev ua haujlwm ntawm tus kheej tuaj yeem hloov kho nrog 1.0% mus rau 3.0% 310S lossis 304 melt-extracted stainless hlau fibers kom tiv taus cov neeg kho tshuab kev co thiab thermal shock.
Aggregate Matrix Grading & Bonding Mechanism
A dense high alumina castable performs through continuous particle size distribution and a two-stage bonding mechanism:
1. Kaw-Packed Aggregate Matrix
Peb cov formulations muab rotary-kiln calcined bauxite aggregate qib ntawm 0 mus rau 8 hli nrog nplua calcined alumina hmoov. Los ntawm kev ua kom zoo ntawm Andreasen particle packing nkhaus, nplua matrix particles sau lub interstitial voids ntawm ntxhib bauxite nplej. Qhov no txo cov dej ntim uas xav tau rau kev tso dej, txo qis qhov porosity qis dua 18%, thiab ua kom muaj kev cuam tshuam ntom ntom tiv thaiv cov tshuaj slag thiab abrasive plua plav nkag.
2. Hydraulic Setting (Tsuas Kub)
Thaum pib 24 teev tom qab tso, lubcalcium aluminate cementbinder hydrates rau hauv crystalline calcium aluminate decahydrate (CAH10) thiab dicalcium aluminate octahydrate (C2AH8). Cov pob zeb sib cuam tshuam no tsim kom muaj zog sai sai, tso cai rau kev tshem tawm hauv 18 mus rau 24 teev.
3. Ceramic Sintering (High Temperature)
Raws li qhov cub kub kub nce mus txog 1000 degree, cov hydrated cement matrix undergoes solid-state mineral tshua nrog cov bauxite nplua. Secondary mullite (3Al2O3·2SiO2) crystals nucleate thiab interlock thoob plaws hauv matrix. Qhov no in-site mullitization imparts mus tas li ceramic bonding, compensating rau nruab nrab thermal shrinkage thiab muab siab kub modulus ntawm rupture mus txog rau lub ncov ua hauj lwm txwv.
Qib Xaiv Phau Ntawv Qhia los ntawm Furnace Zone
Xaiv ntawm 55%, 65%, thiab 75% Al2O3 formulations nyob ntawm cov roj tshaj tawm, thermal cycling zaus, thiab tshuaj lom neeg cua:
Thaum Yuav Qhia Txog HAC-55 (55% Al2O3):
Muaj boilers & khib nyiab Incinerators: Cov kab hluav taws xob hluav taws xob, lub ru tsev boiler, cov hmoov tshauv hoppers, thiab cov kab hluav taws xob hauv qhov chaw ua haujlwm kub qis dua 1350 degree.
Txiv qaub Kilns & Hlau Preheaters: Thib ob cov rwb thaiv tsev rov qab cov khaubncaws sab nraud povtseg tom qab ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom.
Tus nqi-sensitive General Linings: Kev teeb tsa loj loj qhov twg tsis muaj qhov tsis txaus ntseeg tsis tas yuav tsum tau thiab cov peev nyiaj siv tau raug txwv.
Thaum Yuav Qhia Txog HAC-65 (65% Al2O3):
Cement Rotary Kiln Cog: Preheater cyclones, calciner ducts, tertiary cua ducts, thiab txias sab phab ntsa raug rau nruab nrab alkali vapor thiab thermal swings.
Steel Rolling Mill Rauv: Reheating furnace hearth ciam teb, taug kev beam npog, thiab soaking qhov sidewalls.
Tsis-ferrous Metallurgy: Aluminium tuav rauv rau sab sauv sab thiab zinc roasting rauv ru tsev.
Thaum Yuav Qhia Txog HAC-75 (75% Al2O3):
Qhov hnyav Thermal Shock Zones: Burner blocks, tso grate, clinker txias bull noses, thiab ladle preheater npog.
Heavy Chemical Attack & Molten Hlau Splashing: Rau siab dua slag raug, xav txog kev ua khub nrogqis cement castablelos yog corundum-fortified matrices.
Cov qauv Monolithic Precast Shapes: Precast burner vuas, lintel blocks, thiab ru tsev delta seem yuav tsum tau muaj peev xwm load-bearing thiab kub lub zog.
Installation, Anchoring & Curing Qhov Zoo Tshaj Plaws
Field installation zoo ncaj qha dictates cov kab ntev. Txawm tias qib siab tshaj 75% alumina castable yuav ua tsis tau ntxov ntxov yog tias sib xyaw nrog dej ntau dhau lossis ua kom sov tsis txaus kom qhuav:
Kev Cai Ntxiv Dej: nruj me ntsis ntsuas ntsuas dej ntxiv siv cov dej huv huv (10℃txog 25 degree). Tsis txhob tshaj 10.0% dej los ntawm qhov hnyav rau cov pa castables. Hauv peb qhov chaw sim, txhua 1% dej ntau dhau txo qhov txias crushing zog los ntawm 12% mus rau 15% thiab nce firing shrinkage.
Anchor Selection thiab Spacing: Ruaj ntseg lub monolithic hauv ob sab phlu nrog Y-puab los yog V-shapestainless hlau refractory anchors(qib 304 for<= 900°C, grade 310S for >= 1000 degree). Qhov chaw anchors 150 mus rau 250 mm sib nrug hauv cov qauv duab peb sab. Haum rau tag nrho cov lus qhia thauj tog rau nkoj nrog lub hau yas nthuav dav (1.5 mus rau 2.0 hli) los yog daim kab xev bitumen kom haum rau thermal expansion ntawm cov hlau yam tsis tau tawg lub cev castable.
Compaction thiab vibration: Siv cov poker vibrators sab hauv (50 txog 100 Hz) tso rau ntawm 100 mus rau 150 mm ncua sij hawm rau 10 mus rau 20 vib nas this ib immersion. Tso tseg kev vibration tam sim ntawd ib zaug huab cua npuas tsis tshwm sim thiab cov kua nyias nyias coats saum npoo los tiv thaiv kev sib sau ua ke sib cais.
Moist Curing Protocol: Khaws cov khoom uas raug castable npog nrog ntub burlap lossis yas zaj duab xis rau tsawg kawg 24 teev ntawm 15℃txog 25 degree. Kev ya raws sai sai thaum lub sij hawm exothermic cement hydration starves lub unhydrated cores thiab ua rau chalky nto spalling.
Pib Qhuav-Tawm Teem caij: Thaum tshav kub kub maj mam thaum thawj commissioning: ramp ntawm 15℃mus rau 20℃ib teev mus rau 150℃(tuav 1 teev ib 25 hli hauv ob sab phlu thickness kom tshem tawm dawb noo noo); ramp mus rau 350℃thiab tuav kom tso cov tshuaj chemically bound crystal dej; Tom qab ntawd mus rau ntawm 25℃mus rau 30℃ib teev rau kev khiav hauj lwm kub.
Ntim, Txee Lub Neej & Sourcing
Topower Refractory muab siab alumina refractory castables ntim rau kev xa khoom mus ntev thoob ntiaj teb:
Moisture-Barrier Ntim: Txuj khoom yog 25 kg multi-wall craft paper bag lined with internal polyethylene film. Cov hnab ntim khoom tau muab tso rau ntawm cov khoom siv hluav taws xob uas tau kho cua sov fumigated ntoo pallets, nruj nreem qhwv, thiab npog nrog cov ntaub yas los nag.
Ntim Ntim: Rau cov chaw tsim khoom loj thiab cov tshuab pneumatic batching tshuab, peb muab 1000 kg lossis 1200 kg hnyav-ua haujlwm woven polypropylene lub hnab loj nrog cov kab hauv qab thiab hauv qab tso tawm spouts.
Txee Life Protection: Cov hnab ntim tsis tau muab khaws cia rau hauv qhov siab, qhuav, qhov cua hauv tsev khaws khoom khaws cia cov ntawv pov thawj kev sib raug zoo rau 6 txog 9 lub hlis.
Kev soj ntsuam tag nrho Traceability: Txhua pawg ntau lawm tau kuaj xyuas cov tshuaj muaj pes tsawg leeg (XRF), particle tis, thiab 110℃/ 1400℃txias crushing zog. Ua tiav Mill Test Certificate (COA) nrog rau txhua lub thawv ntim dej hiav txwv.
Transparent Sourcing: Nqe & Yuav Ua Li Cas
Raws li ib tug ncaj qha refractory chaw tsim tshuaj paus nyob rau hauv Zibo, Shandong, Topower Refractory muab pob tshab wholesale nqe thiab teb engineering txhawb:
Technical RFQ Checklist
Txhawm rau kom tau txais cov lus hais meej thiab cov lus pom zoo tsim tawm hauv 4 teev, xa:
Target Al2O3 Qib: HAC-55, HAC-65, los yog HAC-75 (los yog qhia kom meej ua hauj lwm kub thiab atmospheric gas muaj pes tsawg leeg).
Txoj Kev Txhim Kho: Kev vibration casting, nws tus kheej ntws twj tso kua mis casting, lossis kho phom.
Yuav Tsum Muaj Ntau: Tag nrho tonnage (Tag nrho Thawv Load FCL yog 20 mus rau 24 metric tons ib 20GP thawv).
Anchor & Accessory Xav tau: Stainless hlau thauj tog rau nkoj qhov ntev, expansion caps, ceramic fiber backing pam, los yog steel koob fibers.
Chaw nres nkoj: Rau instant FOB Qingdao / Tianjin lossis CIF nqe lus suav.
Indicative Pricing Reference: Standard HAC-55 feem ntau yog nyob ntawm 240 txog 320 USD ib metric tuj FOB Tuam Tshoj; HAC-65 ranges ntawm 320 mus rau 420 USD ib metric ton; thiab hnyav-duty HAC-75 yog li ntawm 420 mus rau 560 USD ib metric ton, nyob ntawm alumina raw khoom pricing thiab ntim xaiv.
Direct Engineering Support: Hu rau peb pab neeg muag khoom ntawminquiry@topower.techrau kev sib xyaw tsim kev sib tham, kev teeb duab kos duab, thiab dawb 2 mus rau 5 kg kuaj cov qauv ntsuas.
Cov lus nug nquag
Dab tsi yog qhov txawv ntawm siab alumina castable thiab siab alumina cib?
Lub siab alumina castable yog ib qho tsis zoo li, hydraulic-teeb refractory muab tso rau ntawm qhov chaw los tsim kom tsis tu ncua, sib koom ua ke-dawb monolithic linings ntawm complex geometry. High alumina bricks yog pre-pressed thiab kiln-fired blocks nteg nrog mortar seams. Thaum cib muab lub Hoobkas tswj qhov ntom ntom, castables tshem tawm cov kev sib koom ua ke tsis zoo thiab txo qis kev teeb tsa.
Cov dej ntau npaum li cas yuav tsum tau ntxiv rau cov sib xyaw monolithic thaum lub sijhawm ua haujlwm?
Standard ntom castables yuav tsum tau 8.0% mus rau 10.0% huv potable dej los ntawm qhuav mix hnyav. Ib txwm siv lub tshuab ua kom yuam kev sib tov es tsis yog lub nruas tilting. Sib tov qhuav rau 1 mus rau 2 feeb, ntxiv 80% ntawm cov dej thiab sib tov rau 2 feeb, tom qab ntawd kho nrog cov dej ntxiv rau 1 mus rau 2 feeb kom txog thaum ua tiav qhov kev vibration zoo.
Refractory linings puas tuaj yeem txhawb nqa nrog steel fibers?
Yog lawm. Ntxiv 1.0% mus rau 3.0% los ntawm qhov hnyav ntawm melt-extracted tshav kub-resistant stainless hlau fibers (xws li 310S los yog 304) ho txhim kho tensile lub zog, inhibits micro-crack propagation, thiab ncua lub neej nyob rau hauv tej thaj chaw uas muaj kev cuam tshuam rau cov neeg kho tshuab thiab sai thermal cycling.
