PDF Low Carbon MgO C Refractories for Clean Steel
HMOR 1400°C/30 min 31 51 58 Kg/cm2 Table 1 Chemical composition and basicity of Spalling cycles 15 18 18 the slag chemistry of ladle slag 1400°C to Air Oxidation resistance at CaO SiO2 Al2O3 MgO Fe2O3 1400°C/3 hrsBlack 41 3 44 2 49 8 CaO/SiO2 = 6 02 surface remaining 54 34 9 02 30 84 3 50 0 99 CaO/Al2O3=1 76 Induction slag
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RefractoriesIndMin
parts for steel making Al2O3 C ZrO2 C MgO C basedmainly for continuous castingladle shrouds monobloc stopper submerged nozzles central role in steel making heavy duty parts 10 Graphite and Carbon bricks Usually precursors like PET Coke Anthracite Coke or Synthetic Graphite are used
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Corrosion behavior of MgO–C ladle refractory by molten
On the basis of this fact the corrosion behavior of MgO–C refractory in contact with molten slag during the steel refining process is experimentally studied in this work Rotating and static dipping tests of MgO–C refractory in CaO–SiO2–Al2O3–MgO–FeO slags are conducted and the effects of composition of slag carbon in refractory
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Steel Ladle Refractory CastableRongsheng Refractory
Al2O3 MgO C castable can produce magnesia alumina spinel and significantly enhance corrosion resistance and spall resistance of refractory material greatly prolong the service life of steel ladle 6 Steel Ladle Alumina Magnesia Castable To shorten construction time improve working condition and reduce refractory material consumption
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TECHNOLOGIES OF ALUMINA MAGNESIA REFRACTORIES FOR STEEL
In this article technologies of unburned Al2O3 MgO UAM refractories are demonstrated in terms of microstructure evolution During operation Mg diffuses from MgO to Al2O3 through the liquid phase to form spinel MgAl2O4 network Molten slag tends to penetrate along the voids in the spinel network structure and spinel dissolves in the penetrated slag
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Refractory Materials for Steel LadleRongSheng Kiln
Above is the simple introduction ladle refractory material steel enterprises smelting steel used by different refractory material types material also different rongsheng is a professional manufacturer of refractory material and can accord to your requirements for you to customize the ladle refractory materials used guarantee use the ladle
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Al2O3 MgO C and MgO Al2O3 C Brick PRCO
These are ideal products for ladle bottoms and side walls PN series of MgO C bricks are widely applied in large and medium sized plants like Capital Steel Xinyu Steel and Anyang Steel At the same time they are well accepted by customers from Thailand Ukraine India Russia and South Korea etc
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Review Control of MgO Al2O3 Spinel Inclusions in
less steel Fe–16wt Cr deoxidised by aluminium 5 Quan titative analysis by EPMA showed that the oxide particle was composed of 34wt MgO and 66wt Al 2 O 3 Refer ring to the corresponding phase diagram 6 spinel forms solid solution with relatively wide region MgO content takes ranging from 6 5 to 39wt at 2000°C at which the
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Wear mechanisms of Al2O3 MgO spinel forming refractories
Wear mechanisms of Al2O3 MgO spinel forming refractories used in steel ladle impact padsVolume 110 Issue 6 to control volume expansion in order to avoid the formation of cracks and limit the penetration of secondary metallurgy steel ladle slag Keywords
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Steel Ladle Refractory Mateial CatalogueRongsheng
C Magnesia carbon brick used in working layer for the steel ladle Magnesia carbon refractory brick is mainly used for the steel ladle slag line magnesia carbon fire bricks is especially suitable for multi furnace continuous casting The MgO content in refractory bricks is generally around 76 and the C content is between 15 and 20
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Materials Free Full Text Optimization of Properties
The slag resistance of magnesia carbon MgO C bricks for steel ladle linings was significantly improved with CMA aggregates addition as a consequence of an in situ formation of a protective layer on the surface of bricks 14 15 The corrosion mechanism of alumina spinel castables with CMA aggregates addition has been demonstrated by
Get PriceCorrosion Mechanism of MgO C Ladle Refractory in Contact
Abstract The corrosion resistance and corroded microstructure of MgO C refractory in molten slag are investigated by immersion test in muffle furnace at 1600 °C The microstructure and chemical compositions of the specimens after erosion experiment are characterized by scanning electron microscope SEM and energy dispersive X ray EDX
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MgO C MgO Al2O3 C/Al2O3 MgO C Brick for
Al2O3 MgO ≥75 ≥70 ≥76 ≥74 ≥72 C ≥10 ≥10 ≥8 ≥8 ≥7 MgO ≥18 ≥21 Al2O3 ≥14 ≥12 ≥10 /Apparent porosity ≤6 0 ≤7 0 ≤8 0 ≤9 0 ≤10 0 /Bulk density g/cm3 ≥2 95 ≥2 95 ≥2 90 ≥2 85 ≥2 80 /Cold crushing strength MPa ≥40 ≥40 ≥50
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Interaction between MgO–C bricks and ladle slag with a 1 1
The interaction between the industrial ladle lining bricks carbon = 5 13 mass and secondary metallurgical slag CaO/Al 2 O 3 ratio = 1 SiO 2 = 1–20 mass was evaluated under laboratory conditions using finger testing between 1550 and 1650 °C The thermophysical properties including viscosity density and surface tension of the three slags were measured and compared with
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Chapter 3 Steel Plant Refractories
6300Graphite C pure 5430Thoria ThO2 pure sintered 5070Magnesia MgO pure sintered 4890Zirconia ZrO2 pure sintered 4620Beryllia BeO pure sintered 4080Silicon Carbide SiC pure 3980Magnesia 90 95 3960Chromite FeO Cr2O3 3880Chromium Oxide 3720Alumina Al2O3 pure sintered
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1 Introduction As smart refractories the Al 2 O 3 MgO C refractories AMCR s development has brought a significant evolution in the history of refractories used in the steel industry These refractories made new way to the steel industry in the 1990s due to their favorable properties being selected as proper replacements for MgO C refractories MCR s in the molten metal
Get PriceReoxidation of Al–Ti Containing Steels by
Reoxidation of steel after finishing refining causes a major problem for the production of clean steels refractories in the ladle and tundish The oxidation reac tion results in formation of non metallic inclusions such as Al 2 O 3 TiO x and Al–Ti–O oxides which might cause process 2 and Mg chips at 450°C
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MgO Al2O3 C Series RefractoriesAllied Metallurgy
Using top quality bauxite or corundum as aggregates phenolic resin as binding agent and emphasizing matrix Horton series of Al 2 O 3 MgO C bricks are offered in a range of MgO contents They can be applied for ladle wall bottom and other parts showing the features of good corrosion resistance and spalling resistance as well as high strength etc
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Investigations on the properties of Al2O3–MgO refractory
Nowadays steel ladle linings below the slag line are usually casted by the calcium aluminate cement bonded Al 2 O 3 –MgO refractory castables due to their improved corrosion resistance and slag penetration resistance associated with the in situ formation of MgAl 2 O 4 spinel in the refractory castables 1–4 but the other parts are constructed with MgO–C refractory bricks
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Fracture behavior and microstructure analysis of Al2O3–MgO
Three different castables based on the Al 2 O 3 –MgO–CaO system were prepared as steel ladle purging plug refractories corundum based low cement castable C LCC corundum spinel based low cement castable C S LCC and corundum spinel no cement castable C S NCC hydratable alumina ρ Al 2 O 3 bonded
Get PriceFracture behavior and microstructure analysis of Al2O3–MgO
Three different castables based on the Al2O3–MgO–CaO system were prepared as steel ladle purging plug refractories corundum based low cement castable C LCC corundum spinel based low cement castable C S LCC and corundum spinel no cement castable C S NCC hydratable alumina ρ Al2O3 bonded The fracture behavior at room temperature was tested by the method of
Get PriceFracture behavior and microstructure analysis of Al 2 O 3
Abstract Three different castables based on the Al 2 O 3 MgO CaO system were prepared as steel ladle purging plug refractories corundum based low cement castable C LCC corundum spinel based low cement castable C S LCC and corundum spinel no cement castable C S NCC hydratable alumina ρ Al 2 O 3 bonded The fracture behavior at room temperature was tested by the method of wedge
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Review Control of MgO Al2O3 Spinel Inclusions in
less steel Fe–16wt Cr deoxidised by aluminium 5 Quan titative analysis by EPMA showed that the oxide particle was composed of 34wt MgO and 66wt Al 2 O 3 Refer ring to the corresponding phase diagram 6 spinel forms solid solution with relatively wide region MgO content takes ranging from 6 5 to 39wt at 2000°C at which the
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Steel Ladle Al2O3 MgO C RefractoryRS Kiln Refractory Bricks
Steel Ladle Al2O3 MgO C Refractory Description With the rapid development of steel smelting technique especially with the application of continuous casting and out furnace refining techniques the requirement on ladle refractory material is much higher So
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Chapter 3 Steel Plant Refractories
6300Graphite C pure 5430Thoria ThO2 pure sintered 5070Magnesia MgO pure sintered 4890Zirconia ZrO2 pure sintered 4620Beryllia BeO pure sintered 4080Silicon Carbide SiC pure 3980Magnesia 90 95 3960Chromite FeO Cr2O3 3880Chromium Oxide 3720Alumina Al2O3 pure sintered
Get PriceInteraction between MgO–C bricks and ladle slag with a 1 1
The interaction between the industrial ladle lining bricks carbon = 5 13 mass and secondary metallurgical slag CaO/Al 2 O 3 ratio = 1 SiO 2 = 1–20 mass was evaluated under laboratory conditions using finger testing between 1550 and 1650 °C The thermophysical properties including viscosity density and surface tension of the three slags were measured and compared with
Get PriceThe Role of Graphite in Refractories such as Al2O3/MgO/C
MgO C AMC refractories for steel ladle lining 16 10 13 page 15 RF A/C = 12 9 Better packing of microstructure smaller pore size Higher conc of graphite lead to best packing bulk density App porosity Lin dim change Cold crushing strength Hot modulus of rapture Refractoriness under load
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Refractories for Steel Ladle Refractory Mortar MgO C Bricks for Ladle Al2O3 MgO C and MgO Al2O3 C Brick Alumina Magnesia Spinel Bricks MgO CaO C Bricks MgO Cr2O3 Bricks Purging Plugs Porous Purging Plugs Twin Purging Plug System Well Blocks
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Refractories for Tundish
High temperature fired Al2O3 C and Al2O3 ZrO2 Slide plates Lightly fired metal composited Al2O3 C and Al2O3 ZrO2 Slide plates MgO C and MgO Spinel C Sliding Plates Unfired Al2O3 C and Al2O3 ZrO2 Slide plates Mechanism for steel industry Slide gate plate mechanism for steel ladle Quick changing mechanism for tundish Slag dam mechanism
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Refractory Materials for Steel LadleRongSheng Kiln
9 rows Above is the simple introduction ladle refractory material steel enterprises smelting steel
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