reaction behavior of slag and spinel in steel ladle castables

Improvement in Slag Resistance of No-Cement Refractory

 · (low cement castables (LCCs)) have been widely used for steel ladles 1 . Many publications have also highlighted that the in-situ spinel forming LCCs exhibit better slag resistance compared to the pre-formed spinel containing LCCs due to the fine and well distributed spinel grains derived from the reaction between MgO and Al2O3 during

Corrosion of spinel clinker by CaO–Al2O3–SiO2 ladle slag

 · Based on three kinds of spinel clinkers containing 47 69 and 94 wt. Al 2 O 3 the corrosion mechanism of each spinel clinker by a CaO–Al 2 O 3 –SiO 2 ladle slag was investigated and the corrosion and penetration behavior of castables containing each spinel clinker in fine parts were examined. 1. The layer of MgO· (Al Fe) 2 O 3 complex

Reaction behavior of slag and spinel in steel ladle castables

Reaction behavior of slag and spinel in steel ladle castables Yoshitaka SADATOMI ³ Naoya ENOMOTO and Junichi HOJO Technical Research Laboratories Krosaki Harima Corporation 1–1 Higashihama-machi Yahatanishi-ku Kitakyushu 806–8586

Fracture behaviour and microstructure of refractory

 · Fracture behaviour and microstructure of refractory materials for steel ladle purging plugs in the system Al 2 O 3-MgO-CaO. The corrosion resistance against iron oxide slag and the properties of cement- and hydratable alumina-bonded corundum-spinel castables have been discussed in detail in a previous paper . Thermodynamic evaluations based

Influence of Cr Content in Steel on the Behavior of MgO·Al

 · MgO·Al2O3 spinel inclusion (from here "Mg–Al inclusion") is harmful to the properties of steel products. Many efforts have been made to control the composition of harmful inclusions during ladle treatment where the complex reactions among molten steel slag refractory deoxidation products and alloying elements occur simultaneously. It is well known that the pure Al2O3 inclusion

Thermal characteristics of Al2O3–MgO and Al2O3–spinel

 · 1.. IntroductionBoth Al 2 O 3 –MgO and Al 2 O 3 –spinel castables have been widely used as steel ladle linings below the slag line because of increasing labor costs and the severe secondary steelmaking environment in the ladle. In Al 2 O 3 –MgO castables MgO reacts with Al 2 O 3 to form in situ spinel during the service while in Al 2 O 3 –spinel castables spinel are added to the

BEHAVIOUR OF ALUMINA-SPINEL SELF-FLOWING

 · the use of self-flowing castables. Hence alumina-spinel self-flowing castables have been used as steel ladle lining below the slag line because of increasing labor costs and the severe secondary steel-making environment in the ladle 3-5 . The present work describes the effect of nano-alu-mina particles which are the extremely fine particles on

Slag Resistance of Al2O3–MgO Refractory Castables in

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Role of spinel composition in the slag resistance of Al2O3

 · 1.. IntroductionBoth Al 2 O 3 –spinel and Al 2 O 3 –MgO castables have been widely used as steel ladle linings below the slag line because of increasing labor costs and the severe secondary steelmaking environment in the ladle. In Al 2 O 3 –spinel castables spinels are added to the mixes as a grain phase while in Al 2 O 3 –MgO castables MgO reacts with Al 2 O 3 to form in situ spinel

Spinel s springIndustrial Minerals

 · Alumina-rich spinel castables are widely used in steel ladle linings below the slag line and as pre-cast shapes such as purging plugs and well blocks. Shanmugam Vridhachalam Pichai head of research and development at Saudi Refractory Industries said "Addition of spinel at around 25 in the castable system ultimately improves the life of

Role of spinel composition in the slag resistance of Al2O3

 · 1.. IntroductionBoth Al 2 O 3 –spinel and Al 2 O 3 –MgO castables have been widely used as steel ladle linings below the slag line because of increasing labor costs and the severe secondary steelmaking environment in the ladle. In Al 2 O 3 –spinel castables spinels are added to the mixes as a grain phase while in Al 2 O 3 –MgO castables MgO reacts with Al 2 O 3 to form in situ spinel

Microstructure and physical properties of steel-ladle

Three different castables were prepared as steel-ladle purging-plug refractory materials corundum-based low-cement castable (C-LCC) corundum-spinel-based low-cement castable (C-S-LCC) and no-cement corundum-spinel castable (C-S-NCC) (hydratable alumina ρ-Al 2 O 3 bonded). The properties of these castables were characterized with regard to water demand/flow ability cold crushing strength

Corrosion of spinel clinker by CaO–Al2O3–SiO2 ladle slag

 · Based on three kinds of spinel clinkers containing 47 69 and 94 wt. Al 2 O 3 the corrosion mechanism of each spinel clinker by a CaO–Al 2 O 3 –SiO 2 ladle slag was investigated and the corrosion and penetration behavior of castables containing each spinel clinker in fine parts were examined. 1. The layer of MgO· (Al Fe) 2 O 3 complex

Spinel In situ versus PreformedClearing the Myth

 · different zones of a steel ladle. 1 Introduction Since beginning of the 1990s alumina-spinel castables are widely used as steel ladle lining below the slag line and as pre-cast shapes like purging plugs and well blocks. A great deal of studies has been conducted on the effect of spinel-types spinel grain size and amount of spinel on the

CHEMICAL REACTIONS AT PHASE INTERFACES OF

 · spinel like MgAl 2O 4 and dicalcium silicate(Ca 2SiO 4) form as the interface. Reaction of CaO-MgO-Al 2O 3-SiO 2 ladle slag glazed on high alumina refractory with Al-deoxidized molten steel was investigated with focus on the variation of microstructure and chemistry of the glazed refractory. Thermodynamic analysis was carried out simultaneously

Improvement in Slag Resistance of No-Cement Refractory

 · (low cement castables (LCCs)) have been widely used for steel ladles 1 . Many publications have also highlighted that the in-situ spinel forming LCCs exhibit better slag resistance compared to the pre-formed spinel containing LCCs due to the fine and well distributed spinel grains derived from the reaction between MgO and Al2O3 during

Microstructure and physical properties of steel-ladle

Three different castables were prepared as steel-ladle purging-plug refractory materials corundum-based low-cement castable (C-LCC) corundum-spinel-based low-cement castable (C-S-LCC) and no-cement corundum-spinel castable (C-S-NCC) (hydratable alumina ρ-Al 2 O 3 bonded). The properties of these castables were characterized with regard to water demand/flow ability cold crushing strength

Composition Changes of Inclusions by Reaction with Slag

Nishi et al. 45) and Okuyama et al. 46) investigated the supplying behavior of Mg from refining slag to Al-killed steel. They found that the Mg content in steel increased with the reaction time as shown in Fig. 3 46) and MA spinel was observed in the steel after the reaction. Some researchers 15 47 48 49 50) conducted similar experiments with slag of different compositions and the supplying

Slag/refractory and metal/refractory interactions during

 · SLAG/REFRACTORY AND METAL/REFRACTORY INTERACTIONS 425 Results and discussion Black refractories The Al 2O 3-SiO 2-C refractories have a range of 51 to 61 Al 2O 3 10 to 16 SiO 2 and 24 to 3 C.The depth of penetration of the refractory by the steel is shown in

CHEMICAL REACTIONS AT PHASE INTERFACES OF

 · spinel like MgAl 2O 4 and dicalcium silicate(Ca 2SiO 4) form as the interface. Reaction of CaO-MgO-Al 2O 3-SiO 2 ladle slag glazed on high alumina refractory with Al-deoxidized molten steel was investigated with focus on the variation of microstructure and chemistry of the glazed refractory. Thermodynamic analysis was carried out simultaneously

Microstructure and physical properties of steel-ladle

Three different castables were prepared as steel-ladle purging-plug refractory materials corundum-based low-cement castable (C-LCC) corundum-spinel-based low-cement castable (C-S-LCC) and no-cement corundum-spinel castable (C-S-NCC) (hydratable alumina ρ-Al 2 O 3 bonded). The properties of these castables were characterized with regard to water demand/flow ability cold crushing strength

Fracture behaviour and microstructure of refractory

 · Fracture behaviour and microstructure of refractory materials for steel ladle purging plugs in the system Al 2 O 3-MgO-CaO. The corrosion resistance against iron oxide slag and the properties of cement- and hydratable alumina-bonded corundum-spinel castables have been discussed in detail in a previous paper . Thermodynamic evaluations based

Effect of CaO/Al2O3 Ratio of Ladle Slag on Formation

Ca transfer from slag to molten steel. Also the starting and finishing points of the modification of spinel into the liquid oxides were delayed as the content of SiO 2 in the ladle slag increased from 7 to 19 wt . There are many investigations regarding the effect of slag composition on the spinel

Thermal characteristics of Al2O3–MgO and Al2O3–spinel

 · 1.. IntroductionBoth Al 2 O 3 –MgO and Al 2 O 3 –spinel castables have been widely used as steel ladle linings below the slag line because of increasing labor costs and the severe secondary steelmaking environment in the ladle. In Al 2 O 3 –MgO castables MgO reacts with Al 2 O 3 to form in situ spinel during the service while in Al 2 O 3 –spinel castables spinel are added to the

Slag Resistance of Al2O3–MgO Refractory Castables in

The full text of this article hosted at iucr is unavailable due to technical difficulties.

Ceramics Free Full-Text Improvement in Slag Resistance

The corrosion resistance of spinel containing cement bonded castables has been extensively investigated in the past. However corrosion of no-cement refractory castables (NCC) has not been widely studied since the use of NCC has been relatively limited up till now. This paper focuses on the slag resistance of NCCs and the often-used spinel containing low cement castable (LCC) is used as the

Composition Changes of Inclusions by Reaction with Slag

Nishi et al. 45) and Okuyama et al. 46) investigated the supplying behavior of Mg from refining slag to Al-killed steel. They found that the Mg content in steel increased with the reaction time as shown in Fig. 3 46) and MA spinel was observed in the steel after the reaction. Some researchers 15 47 48 49 50) conducted similar experiments with slag of different compositions and the supplying

Corrosion resistance of alumina-magnesia castable to

into slag penetration of molten slag into refractory and formation of reaction products. The deterioration by slag penetration and chemical reaction leads to spalling of the surface layer of refractory. The authors have studied on the reaction behaviors of alumina-magnesia and alumina-spinel castables with molten slag.

BEHAVIOUR OF ALUMINA-SPINEL SELF-FLOWING

 · the use of self-flowing castables. Hence alumina-spinel self-flowing castables have been used as steel ladle lining below the slag line because of increasing labor costs and the severe secondary steel-making environment in the ladle 3-5 . The present work describes the effect of nano-alu-mina particles which are the extremely fine particles on

The dynamic wetting characteristics of ladle slags on spinel

 · reaction and/or a change in the physical characteristics of the slag with increasing alumina. To understand inclusion reactivity with slag a similar technique as used by Choi and Lee 19 has been developed to study wetting behavior of a ladle type slag on alumina spinel calcium aluminates and iron sulfide substrates.

Corrosion of spinel clinker by CaO–Al2O3–SiO2 ladle slag

 · The free MgO and spinel minerals in each spinel clinker mainly trapped Fe 2 O 3 from the slag. CaO–Al 2 O 3 compounds were formed at the slag-clinker interface by the reaction between free Al 2 O 3 in the Al 2 O 3 -spinel clinker and CaO from slag. Slag penetration into the spinel clinkers was retarded by these compounds.

Influence of Cr Content in Steel on the Behavior of MgO·Al

 · MgO·Al2O3 spinel inclusion (from here "Mg–Al inclusion") is harmful to the properties of steel products. Many efforts have been made to control the composition of harmful inclusions during ladle treatment where the complex reactions among molten steel slag refractory deoxidation products and alloying elements occur simultaneously. It is well known that the pure Al2O3 inclusion