Sillimanite ntxhia refractory cib (feem ntau hu ua sillimanite cib los yog sillimanite-mullite composite cib) yog ib tug hwm alumina-silicate refractory engineered los ntawm ntuj los yog beneficiated sillimanite minerals (Al2O3·SiO2 los yog Al2SiO5) blended nrog hluavtaws mullite thiab hluavtaws mullite. Tsis zoo li cov khoom siv hluav taws xob los yog bauxite refractories uas shrink thiab soften nyob rau hauv lub sij hawm ntev loads, sillimanite undergoes ib tug irreversible, topotactic mullitization transformation saum toj no 1500℃mus rau 1550℃(yielding 3Al2O3·2SiO2 thiab ib tug experience ntawm micro-kev sib txuas ntawm cov khoom siv sib txuas ntawm cov khoom siv sib xyaw ua ke), 6% mus rau 8%. Standardized raws li cov qib kev lag luam xws li SAL75 (Al2O3 Ntau dua lossis sib npaug li 76%, qhov ntom ntom Ntau dua lossis sib npaug rau 2.65 g / cm³) thiab SAL80 (Al2O3 Ntau dua lossis sib npaug li 80%, bulk ntom ntom ntau dua lossis sib npaug rau 2.75 g / cm³, tshwj tsis yog lub zog txias ntawm cov khoom siv cib) Ntau tshaj los yog sib npaug rau 120 MPa), ib qho ultra-high refractoriness nyob rau hauv load (RUL @ 0.2 MPa tshaj 1650℃rau 1670 degree), thiab negligible high-temperature creep rates (qis dua 0.2% tom qab 50 teev ntawm 1500 degree). Cov yam ntxwv thermal-mechanical no ua rau sillimanite refractories qhov kev lag luam benchmark rau iav rauv rau hauv lub qhov cub rau lub qhov cub qhov cub, cov khoom noj khoom haus uas siv tau (spouts, plungers, orifice rings), thiab kub kub blast furnace kub qhov cub combustion chambers.
Xaiv cov qib sillimanite uas tsim nyog, ua kom zoo dua cov koob zoo li mullite interlocking network, thiab ntsuas qhov ntsuas kub tsis zoo yog qhov tseem ceeb rau kev tiv thaiv refractory spalling thiab iav tsis zoo tsim.
Technical Specifications: Qib Matrix (SAL75, SAL80 & JA Series)
Hauv iav melting thiab metallurgical daim ntaub ntawv, thermal stability nyob rau hauv hnyav cyclic kub swings yuav tsum tau meej mineralogical tswj.
Hauv qab no yog cov ntaub ntawv pov thawj lub cev, txhua yam, thiab kub-kub raws li lub Hoobkas tswj cov qauv zoo los ntawm peb cov ntawv teev npe:
Txheeb xyuas lub cev thiab tshuaj tsis haum
Qib SAL80 (High-Purity Sillimanite-Corundum Composite):
Al2O3 Cov ntsiab lus: Ntau dua lossis sib npaug rau 80.0%
Fe2O3 Cov ntsiab lus: Tsawg dua lossis sib npaug rau 0.8%
Bulk Density (BD): Ntau dua lossis sib npaug li 2.75 g / cm³
Pom tseeb Porosity: Tsawg dua lossis sib npaug li 17.0%
Cold Crushing Strength (CCS): Ntau dua lossis sib npaug li 120 MPa
Refractoriness nyob rau hauv Load (RUL @ 0.2 MPa): Ntau dua lossis sib npaug rau 1670 degree
Permanent Linear Hloov (PLC @ 1500℃× 2h): ± 0.2%
Thermal nthuav dav (@1000 degree): 0.6%
Lub luag haujlwm tseem ceeb: High-wear forehearth channel blocks, iav tank feeder tais, thiab blast furnace checker crowns.
Qib SAL75 (Standard Sillimanite-Mullite Refractory Brick):
Al2O3 Cov ntsiab lus: Ntau dua lossis sib npaug rau 76.0%
Fe2O3 Cov ntsiab lus: Tsawg dua lossis sib npaug rau 1.0%
Bulk Density (BD): Ntau dua lossis sib npaug li 2.65 g / cm³
Pom tseeb Porosity: Tsawg dua lossis sib npaug li 18.0%
Cold Crushing Strength (CCS): Ntau dua lossis sib npaug li 120 MPa
Refractoriness nyob rau hauv Load (RUL @ 0.2 MPa): Ntau dua los yog sib npaug rau 1650 degree
Permanent Linear Hloov (PLC @ 1500℃× 2h): ± 0.2%
Thermal nthuav dav (@1000 degree): 0.6%
Lub luag haujlwm tseem ceeb: iav feeder channels, distributor roofs, burner blocks, thiab non-ferrous smelting furnace linings.
Qib JA70 (Alumina-Sillimanite-Andalusite Blend):
Al2O3 Cov ntsiab lus: Ntau dua lossis sib npaug rau 70.0%
Fe2O3 Cov ntsiab lus: Tsawg dua lossis sib npaug rau 1.3%
Bulk Density (BD): Ntau dua lossis sib npaug li 2.65 g / cm³
Pom tseeb Porosity: Tsawg dua lossis sib npaug li 14.0%
Cold Crushing Strength (CCS): Ntau dua lossis sib npaug li 110 MPa
Refractoriness nyob rau hauv Load (RUL @ 0.2 MPa): Ntau dua los yog sib npaug rau 1610 degree
Permanent Linear Hloov (PLC @ 1450℃× 2h): ± 0.2%
Thermal nthuav dav (@1000 degree): 0.6%
Lub luag haujlwm tseem ceeb: Lub tshuab hluav taws xob tawg kub kub lub qhov cub hluav taws xob combustion phab ntsa thiab cov tshuab hluav taws xob hloov hluav taws xob sab saud.
Qib JA60 / JA60E (Structural Thermal Shock Grade):
Al2O3 Cov ntsiab lus: 60.0% rau 65.0%
Fe2O3 Cov ntsiab lus: Tsawg dua lossis sib npaug rau 1.3%
Qhov ntom ntom (BD): 2.60 txog 2.70 g / cm³
Pom tseeb Porosity: 13.0% txog 15.0%
Cold Crushing Strength (CCS): 90 txog 100 MPa
Refractoriness nyob rau hauv Load (RUL @ 0.2 MPa): 1550℃txog 1600 degree
Permanent Linear Hloov (PLC @ 1450℃× 2h): ± 0.2% rau ± 0.3%
Lub luag haujlwm tseem ceeb: Ceramic tunnel kiln burner blocks, pusher kiln slide rails, thiab reheat rauv taws.
Qhov twg cov kiln sib xyaw tsim kev hloov pauv ntawm cov pob zeb sillimanite siab thiab cov cheeb tsam puas-resistant, cov neeg tsim hluav taws xob sib koom ua ke nrog cov khoom tuab.alumina silica refractory cibthiab custom-shapedtshwj xeeb refractory cib.
Mineralogical Transformation: Kub-kub Creep Resistance & Mullitization
Lub engineering superiority ntawm sillimanite tshaj ib txwm andalusite los yog kyanite nyob rau hauv nws txawv high-temperature conversion cwj pwm:
Topotactic Mullitization Mechanics:Ntuj sillimanite nthuav tawm cov qauv siv lead ua orthorhombic. Thaum tshav kub tshaj 1500 degree, sillimanite decomposes rau hauv acicular (xws li koob) 3:2 mullite crystals thiab vitreous silica (3(Al2O3·SiO2) → 3Al2O3·2SiO2 + SiO2). Vim tias qhov hloov pauv kub ntawm sillimanite siab dua li ntawm kyanite (1300℃txog 1350 degree) thiab andalusite (1380℃txog 1420 degree), mullitization tshwm sim maj mam hauv thaj chaw ua haujlwm ntau dua li ntxov ntxov thaum lub sijhawm tua hluav taws.
Micro-Expansion Countering Thermal Shrinkage:Lub ntim nthuav dav nrog sillimanite mullitization (+6% rau +8}%) offsets lub inherent sintering shrinkage ntawm bonding av nplaum thiab nplua alumina matrices. Qhov no tsim ib lub prestressed, nruj bonded ceramic lub cev nrog tsawg seem seem qhib, tiv thaiv molten iav los yog txhoj puab heev slag los ntawm infiltrating mortar pob qij txha.
Ultra-low Compressive Creep:Creep deformation nyob rau hauv refractories tshwm sim thaum glassy ciam theem soften nyob rau hauv mechanical load ntawm siab kub. Hauv qib high-qib sillimanite cib (SAL75 thiab SAL80), qhov siab Al2O3 piv thiab cov koob thib ob mullite interlock hla cov ciam teb, ntes cov ciam teb zawv zawg. Raws li qhov tshwm sim, 50-teev creep deformation ntawm 1500℃hauv qab 0.2 MPa tseem zoo hauv qab 0.20%, tswj xyuas qhov kev sib raug zoo ntawm cov rooj sib tham hauv forehearth.
Iav Kev Lag Luam Kev Ua Haujlwm: Forehearths, Channels & Feeder Consumables
Thawv iav, tableware, thiab tshwj xeeb borosilicate cov nroj tsuag ua haujlwm ib puag ncig-the-clock forehearth channels uas molten iav ntws ntawm qhov kub ntawm 1100℃thiab 1400 degree. Sillimanite cib yog cov khoom siv thoob ntiaj teb xaiv rau cov cheeb tsam tseem ceeb no:
1. Feeder Channel Blocks (Equalizing thiab Cooling Sections)
Glass Contact Resilience:Sillimanite qhia tau hais tias muaj tshuaj lom neeg sib raug zoo nrog dej qab zib-txiv qaub, lead, thiab borosilicate iav. Nws qhov kev sib cais rau hauv cov iav molten yog qeeb heev thiab homogeneous, tiv thaiv cov pob zeb refractory, qaum, los yog cov noob hlwv los ntawm kev paug cov yaj.
Thermal Uniformity:Qhov ruaj khov thermal conductivity ntawm sillimanite (kwv yees li 1.8 txog 2.2 W / m·K ntawm 1000 degree) tso cai rau qhov kub thiab txias trimming raws feeder channels, kom ntseeg tau tias cov gob viscosity ua ntej xa mus rau IS txoj kev tshuab.
2. Expendable Feeder Mechanism Cheebtsam
Consumable Parts:Feeder spouts ( tais), orifice rings, plunger koob, rotor cylinders, thiab mantle blocks.
Thermal Shock Endurance:Vim tias kev pub noj gob cuam tshuam nrog kev siv tshuab nrawm nrawm thiab sib cuam tshuam nrog cov cua txias txias, cov khoom siv tiv taus huab cua kub hnyav. Sillimanite-mullite formulations tiv taus cua kub ceev los ntawm ambient mus rau 1250℃yam tsis muaj kev puas tsuaj micro-cracking.
Thaum thermal rwb thaiv tsev yuav tsum tau tom qab sillimanite channel blocks, cov txheej txheem rov qab yog insulated nrog tsawg-conductivityceramic fiber boardlos yog monolithic backings siv qis-cementrefractory catsable.
Comparative Matrix: Sillimanite vs Andalusite vs Fused Mullite
Cov pab pawg muab khoom lag luam nquag soj ntsuam peb cov khoom siv aluminosilicate nrog rau hluavtaws fused mullite:
| Performance Parameter | Sillimanite Cib (SAL75) | Andalusite Cib (JA70) | Fused Mullite Cib (JML70) | Standard High Alumina Cib |
|---|---|---|---|---|
| Al2O3 Cov ntsiab lus (%) | 76% mus rau 78% | 68% mus rau 70% | 72% mus rau 76% | 65% mus rau 75% |
| Mullitization Kub | 1500℃rau 1550 degree | 1380℃rau 1420 degree | Pre-synthesized (>1800 degree) | Ib nrab (1300℃txog 1400 degree) |
| Volume nyhuv thaum cua sov | +6% rau +8% Expansion | +3% rau +5% Expansion | Nruab nrab (Zero Linear Expansion) | -1.5% mus rau -3.0% Shrinkage |
| Refractoriness nyob rau hauv Load | Ntau dua lossis sib npaug li 1650 degree | Ntau dua lossis sib npaug li 1610 degree | Ntau dua lossis sib npaug li 1680 degree | 1480℃rau 1520 degree |
| Creep Rate (50h @ 1500 degree) | Tsawg dua lossis sib npaug li 0.20% | Tsawg dua lossis sib npaug li 0.35% | Tsawg dua lossis sib npaug li 0.15% | 0.8% txog 1.5% |
| Thermal Shock Resistance | >30 Cycles (Air Quench) | >40 Cycles (Dej Quench) | 20 mus rau 25 Cycles (Air Quench) | 8 mus rau 12 Cycles |
| Tus nqi txheeb ze | Nruab nrab-siab | Nruab nrab | Siab | Kev lag luam |
Xaiv txoj cai ntawm tus ntiv tes xoo:Xaiv andalusite rau cyclic thermal shock units hauv qab 1450℃(kub moj tej tawg qhov cub, torpedo ladles); xaiv sillimanite rau nruam load-bearing creep kuj thiab molten iav tiv tauj mus txog 1600 degree; xaiv fused mullite rau cov tshuaj phem tshaj plaws.
Precision Machining, Assembly Inspection & Export Ntim
Sillimanite feeder blocks thiab engineered channels thov sub-millimeter dimensional tolerances kom ntseeg tau tias tus nplaig-thiab-groove sib koom ua ke:
Pre-Assembly thiab Dry-Fitting:Intricate forehearth channels, expendable spouts, thiab burner blocks undergo Hoobkas pre-assembly ntawm precision granite leveling rooj. Cov pob qij txha raug suav nrog, tshuaj xyuas nrog cov ntsuas ntsuas ntsuas los txheeb xyuas qhov sib txawv hauv qab 0.5 hli, thiab sib tw-cim ua ntej qhov kawg crating.
Machined Tolerances:Qhov tseem ceeb mating nto yog pob zeb diamond-hauv av kom kam rau ua nyob rau hauv ± 0.5 hli ntawm qhov ntev thiab dav, thiab ± 0.3 hli ntawm thickness.
Export Ntim:Muab qhwv rau hauv cov yeeb yaj kiab tiv thaiv polyethylene, haum nrog kev cai ua npuas ncauj tiv thaiv, thiab ruaj ntseg hauv lub luag haujlwm hnyav, fumigated ISPM-15 ntoo crates ntxiv nrog galvanized steel strapping. Moisture-absorbing desiccant packs tiv thaiv kev ya raws dampness.
Commercial Supply & Delivery Terms:
MOQ:5 Metric Tons rau cov qauv duab; kev cai cuab yeej muaj rau engineered feeder poob lawm.
Lub Sijhawm Ua Haujlwm:15 mus rau 20 hnub rau cov qauv cib series; 25 mus rau 30 hnub rau CNC pob zeb diamond-machined feeder sib dhos.
FOB Export Ports:Qingdao / Tianjin Chaw nres nkoj, Suav teb.
Cov ntaub ntawv pov thawj zoo:Certified Mill Test Certificate, seem soj ntsuam daim ntawv ntsuam xyuas, ultrasonic crack nrhiav kom tau daim ntawv qhia, thiab tag nrho cov tshuaj ntsuam xyuas (XRF).
Cov lus nug nquag nug (FAQ)
Dab tsi ua rau iav feeder channels ua los ntawm cov khoom tsis zoo rau blister lossis qaum?
Inferior alumina bricks muaj qib siab alkaline fluxes (Na2O, K2O) thiab hlau impurities (Fe2O3> 1.5%). Thaum raug cov iav molten, cov fluxing agents yaj nyiam dua, tsim cov viscosity sib txawv hauv zos (cov hlua) thiab tso cov pa roj carbon dioxide npuas npuas (hlawv). Peb cov cib SAL75 thiab SAL80 tuav Fe2O3 qis dua 0.8% mus rau 1.0%, tiv thaiv tsis muaj xim thiab cov noob tsis xws luag.
Vim li cas sillimanite tiv taus qhov kub thiab txias zoo dua li cov qauv bauxite cib?
Cov txheej txheem bauxite refractories muaj ntau cov silica tsis sib xyaw thiab cov impurities uas ua rau qis-melting glassy kua theem ntawm qhov kub siab tshaj 1350 degree. Nyob rau hauv compressive loads, cov glassy theem nyem tawm, ua rau structural sagging. Sillimanite hloov mus rau hauv interlocking acicular mullite crystals uas tshem tawm cov yeeb yaj kiab ua kua dawb, muab lub peev xwm thauj khoom hnyav txog li 1670 degree.
Topower puas tuaj yeem tsim kev cai orifice rings thiab plungers raws li CAD kos duab?
Yog lawm. Peb tuav precision hydraulic nias, plam-casting, thiab 5-axis CNC pob zeb diamond sib tsoo cov chaw. Cov neeg siv khoom tuaj yeem muab CAD (.dwg / .step) kos duab rau txhua lub tais feeder, stirrer, rotor, lossis burner block configuration.
Thov Engineered Sillimanite Drawings & Factory Direct Quotation
Topower Refractory muab ntawv pov thawj sillimanite cib thiab precision-machined iav feeder blocks rau thoob ntiaj teb iav thawv manufacturers, metallurgical nroj tsuag, thiab kiln engineering cog lus.
Direct Factory Technical Inquiry:inquiry@topower.tech
Teb cog lus:Cov ncauj lus kom ntxaws engineering, kev pom zoo ntawm qhov ntev, thiab cov lus hais ua lag luam xa hauv 4 teev ua haujlwm.
