study on slag resistance of refractories in
Corrosion resistance of refractories exposed to molten
Chemical reactivity with the slag at the slag-refractory interface was noted with alumina alumina-chrome and magnesia chrome refractories. Increased chromia content in the aforementioned refractories resulted in increased corrosion resistance.
Chat Online
Wear Mechanisms of Carbon-Based Refractory Materials in
carbon-based refractory and slag or metal in the tap hole of a SiMn furnace can contribute to wear of tap-hole refractory. The results of the study are reported in two parts 1. Part I presents the results of thermodynamic calcu-lations of the potential for chemical reaction between carbon-based refractory material and slag or metal
Chat Online
Study on the slag corrosion resistance of unfired Al2O3
Jan 01 2014 · Generally the slag erosion resistance of the unfired Al 2 O 3 –SiC/β-Sialon/Ti (C N)–C refractories made was excellent according to the method of static crucible and fractal dimension calculation. Ti (C N)/β-Sialon powders (specimen L1) were able to improve the slag corrosion resistance of the composite refractories.
Chat Online
Alert Refractories (January 2017)metallon
in metal and slag phase at 1873 K (1600 C) for the desulfurization reaction which was measured in the present study. Because the dissolution rate of MgO from the refractory to slag phase is one of the key factors affecting the slag composition the mass transfer coefficient of MgO in the ladle slag was also experimentally determined.
Chat Online
Study on the corrosion mechanism between MgO-CaO
Study on the corrosion mechanism between MgO-CaO refractories and refining slag Yanwen YU and Yuxi ZHAO Baoshan Iron Steel Co Ltd. Shanghai 201941 China Abstract The refining AOD and VOD slag corrosion and penetration resistance of Magnesia-Calcia materials with
Chat Online
Zinc Slag Resistance Proven for Refractory Lining
Zinc Slag Resistance Proven for Refractory Lining. An alumina-bonded silicon carbide can be formed into intricate and precise shapes and resists oxidation and thermal shock. Zinc is an excellent metallic material for diecasting because of its fluidity and viscosity but these factors also present problems for molten metal containment its
Chat Online
Wear Mechanisms of Carbon-Based Refractory Materials in
carbon-based refractory and slag or metal in the tap hole of a SiMn furnace can contribute to wear of tap-hole refractory. The results of the study are reported in two parts 1. Part I presents the results of thermodynamic calcu-lations of the potential for chemical reaction between carbon-based refractory material and slag or metal
Chat Online
Laboratory study of the interaction mechanisms between
exposed direct-bonded magnesia-chromite refractories to different slags and found that chromite was more resistant than periclase in an acid slag (CaO/SiO 2= 0.5) while periclase was more resistant in basic slags (CaO/SiO 2= 2).
Chat Online
Use of phase diagrams in studies of refractories corrosion
Jul 18 2013 · The compatibility between refractories and slags indicates the corrosion resistance of different refractories assisting refractories selection for specific applications. Finally phase diagrams can be used to assist design of refractories composition. Repeated experimental corrosion test results show good agreement with phase diagram predictions.
Chat Online
Increase in the Slag Resistance of Refractories Based on
The technology for manufacturing corundum-carbide-silicon refractories with increased slag resistance has been developed. It is shown that one of the directions for improving the quality of carbon-containing products is the creation of protective antioxidant coating on the surface of particles.
Chat Online
A Study on the Influence of Steel Slag or Gas on
study showed that refractory materials that were impregnated with carbon had a much better slag resistance than the refractory that contained no carbon. This is due to the higher wetting angle between carbon and slag. Corrosion of MgO-C refractories in different gas atmospheres consisting of air Ar CO or Ar/CO was also studied.
Chat Online
Increase in the Slag Resistance of Refractories Based on
The technology for manufacturing corundum-carbide-silicon refractories with increased slag resistance has been developed. It is shown that one of the directions for improving the quality of carbon-containing products is the creation of protective antioxidant coating on the surface of particles.
Chat Online
Comparison study of slag corrosion resistance of MgO–MgAl
May 30 2020 · The results showed that the order of the good slag resistance of as-tested refractories was MgO–C > MgO–CaO > MgO–MgAl2O4. The EMF accelerated the corrosion and penetration of slag to the refractories which caused the molten slag to be easier into the refractories by natural convection and Marangoni effect.
Chat OnlineSTUDYING REFRACTORY BRICKS STRUCTURE IMPACT ON
V. YU. KULIKOV et al. STUDYING REFRACTORY BRICKS STRUCTURE IMPACT ON THEIR PERFORMANCE PROPERTIES METALURGIJA 58 (2019) 3-4 the reference the difference in the depth of penetration between the center and the periphery has been about 8 for the experiment 3 . The carried out studies of slag resistance and poros-
Chat Online
Steelmaking Refractories-Chapter 4 Steelmaing and
ing on the basis of a careful study of the wear patterns. In a balanced lining the refractories are oxidation resistance and slag resistance are necessary for good performance. tenance practices that involve gunning of refractories and coating with slag
Chat Online
Application of Electromagnetic Field Theory in the Study
In order to further study the morphology and characteristics of Mn-doped MgFe 2 O 4 spinel the experiments were respectively carried out in medium-frequency induction furnace and resistance furnace. MgO-C refractories containing 6 wt. carbon and iron-rich slag containing 53.62 wt. Fe 2 O 3 were used. The results show that the penetration
Chat Online
A Study on the Influence of Steel Slag or Gas on
study showed that refractory materials that were impregnated with carbon had a much better slag resistance than the refractory that contained no carbon. This is due to the higher wetting angle between carbon and slag. Corrosion of MgO-C refractories in different gas atmospheres consisting of air Ar CO or Ar/CO was also studied.
Chat Online
(PDF) Study on Slag Resistance of " In Situ Spinel Based
Study on Slag Resistance of " In Situ Spinel Based ULC Castable Refractories October 2003 Conference UNITECR 2003 Congress 8th Biennial Worldwide Conference on Refractories ECO Refractory
Chat Online
(PDF) SURVEY OF LITERATURE ON SLAG TESTS FOR REFRACTORY
The slag action in an electric furnace by Endell and Wens 4z resistance of the refractory to slag attack is indicated who conclude that slag attack increases with decreasing by the increase in the cross-sectional area of the crucible slag viscosity and is almost independent of the melted cavity after the test.
Chat OnlineSLAG CORROSION TEST OF REFRACTORIESIDC-Online
SLAG CORROSION TEST OF REFRACTORIES Slag attack is particularly important. The structural strength of the refractory may be critically reduced by the solvent action of liquid slags. The slag attack on the refractories in contact may be in the two ways CorrosionIt is the wear and tear of refractories caused by static chemical attack of slag.
Chat Online
Properties of Refractories
This is a measure of the resistance of a refractory body to the This test helps to study the behavior of a refractory product when subjected to a constant load under conditions of progressively rising temperature. The slag resistance is very high particularly to lime and iron rich slags. 5) Chromite Refractories
Chat Online
The Effect of Carbon Nanoparticles and Calcined Alumina on
strength and corrosion resistance against slag in mag-nesia carbon refractories was studied. 1. Experimental Procedure Table 1 shows the raw materials used in this study. Purity of the sintered magnesia and calcined alumina was 97 and 98 respectively. Chemical composi-tion of the convertor steel slag is shown in Table 2.
Chat Online
EVALUATION OF REFRACTORY BRICKS FOR TITANIA SLAGS J
The bricks and the slag were taken to a third party test laboratory for rotary slag tests. The rotary slag test gives an indication of the resistance of the refractory material against slag attack. A total of three rotary slag tests were preformed one that was run for 10 cycles and two that were run for 15 cycles.
Chat Online
Effect of Cr2O3 on Slag Resistance of Al2O3–SiO2 Refractories
Refractory bodies of 65 wt Al 2 O 3 were prepared from a mixture of calcined alumina and raw kaolin with the addition of Cr 2 O 3 up to 15 wt . The Cr 2 O 3 addition effectively enhances slag resistance and reduces mullite formation. Petrographic analysis of the refractories after the slag test suggests that Cr 2 O 3 increases the viscosity of both the glassy phase in the refractory as well
Chat Online
Effect of Addition of Non-oxides on the Slag Corrosion
1 . In this study various non-oxides such as SiC Si. 3. N. 4. and AlN were added to MgO-Al. 2. O. 3. refractory and the effect on the slag corrosion resistance was investigated. 2. Experimental . Among the Cr-free refractories MgAl. 2. O. 4. was chosen. In the authors group the corrosion resistance of MgAl. 2. O. 4. and the effect of ZrO. 2
Chat OnlineEffect of Cr2O3 on Slag Resistance of Al2O3–SiO2 Refractories
The Cr 2 O 3 addition effectively enhances slag resistance and reduces mullite formation. Petrographic analysis of the refractories after the slag test suggests that Cr 2 O 3 increases the viscosity of both the glassy phase in the refractory as well as the slag thereby retarding slag penetration and reaction at elevated temperature.
Chat Online
Effect of Cr2O3 on Slag Resistance of Al2O3–SiO2 Refractories
The Cr 2 O 3 addition effectively enhances slag resistance and reduces mullite formation. Petrographic analysis of the refractories after the slag test suggests that Cr 2 O 3 increases the viscosity of both the glassy phase in the refractory as well as the slag thereby retarding slag penetration and reaction at elevated temperature.
Chat Online
Analysis and Prediction of Corrosion of Refractory
Oct 23 2020 · A thermodynamics method was used to study the thermodynamic properties of three common sodium salts (NaCl Na2CO3 and Na2SO4) on the corrosion of refractory materials (MgO·Cr2O3 MgO·Al2O3 Al2O3 MgO and Cr2O3). The results determined that MgO has the best corrosion resistance and is not corroded by the three sodium salts.
Chat OnlineComparison study of slag corrosion resistance of MgO–MgAl
May 30 2020 · The results showed that the order of the good slag resistance of as-tested refractories was MgO–C > MgO–CaO > MgO–MgAl2O4. The EMF accelerated the corrosion and penetration of slag to the refractories which caused the molten slag to be easier into the refractories by natural convection and Marangoni effect.
Chat Online
BF Refractories.pdfBF Refractories Refractories in
BF Refractories_____ Refractories in Blast furnace Refractory Features Withstand high temperatures and sudden changes Withstand action of molten slag glass hot gases etc Withstand load at service conditions Withstand abrasive forces Conserve heat Have low coefficient of thermal expansion Will not contaminate the load Properties High Temperature resistant • Size Affects stability of
Chat Online
