• ### STUDY ON SLAG RESISTANCE OF REFRACTORIES IN

1673K 1873K range. It could be known from Fig. 3 (a) that alumina-chrome brick has a better slag corrosion resistance property. From Fig.3 (b) magnesia-chrome brick has a better slag permeation resistance. Furthermore the corrosion and permeation depth of these two refractories increases with the temperature increase. The corrosion and permeation

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• ### Cold Crushing StrengthReStaR

The higher the CCS of a material is the greater should be the resistance to abrasion. Refractories with high CCS are also expected to have higher resistance to slag attack. The determination of cold crushing strength (CCS) is also highly important in case of refractory insulating bricks where bricks have to be porous as well as strong.

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• ### Use of Phase Diagrams in Studies of Refractories Corrosion

Only MgO-spinel refractories exhibited resistance to the slag. The thermodynamic equilibrium calculations were able to predict the experimental behavior

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• ### Enhanced slag resistance of magnesia refractory castables

Oct 15 2020 · At the end of slag resistance experiments the corroded crucibles were cut into two parts perpendicular to the diameter then the slag resistance properties were evaluated by calculating the corrosion index (IC) and penetration index (IP) 13 (1)Ic= (Sc/S0) 100 (2)Ip= (Sp/S0) 100 Where the S0 is the original area of the crucible aperture SC is the corroded area of the crucible and

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• ### CORROSION MECHANISMS OF ZIRCONIA/CARBON BASED

identify the controlling step in refractory corrosion. For steels with low carbon levels the dissolution of the oxides in the slag is the rate determining step because carbon dissolution into the steel is very rapid. This can explain the better performances in term of corrosion resistance of zirconia respect to alumina.

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• ### (PDF) The Wear of Tundish Stopper Refractories by

good resistance to slag attack. The refractory pe rformed poorly in the plant trials suggesting . that internal carbon oxidation is one of the important properties determining the stopper .

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• ### Wear Mechanisms of Carbon-Based Refractory Materials in

examples of slag and metal attack of carbon refractories were reported 12 implying that the slag metal and carbon refractories were not at chemical equilibrium. The purpose of the study presented here was to determine to what extent chemical reactions between carbon-based refractory and slag

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• ### Wear Mechanisms of Carbon-Based Refractory Materials in

examples of slag and metal attack of carbon refractories were reported 12 implying that the slag metal and carbon refractories were not at chemical equilibrium. The purpose of the study presented here was to determine to what extent chemical reactions between carbon-based refractory and slag

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• ### 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.

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• ### Determining the resistance of refractories in a slag

Jul 01 1967 · A method is proposed for testing refractories for slag resistance at 1500–1600°C. The results of investigation into high-grade refractories showed that their resistance is variable and in the main is extremely low. Only silicon carbide nitride-bonded silicon carbide and carbon specimens will resist convective slag at 1500–1550°C. The other refractories were destroyed in varying

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• ### Use of Phase Diagrams in Studies of Refractories Corrosion

Only MgO-spinel refractories exhibited resistance to the slag. The thermodynamic equilibrium calculations were able to predict the experimental behavior

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• ### FURNACES AND REFRACTORIESModern Eq

Cold crushing strength The cold crushing strength is the resistance of the refractory to crushing which mostly happens during transport. It only has an indirect relevance to refractory performance and is used as one of the indicators of abrasion resistance. Other indicators used are bulk density and porosity.

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• ### 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

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• ### Basic Shaped RefractoriesIspatGuru

Basic refractories containing chrome has excellent slag resistance superior spalling resistance and good hot strengths. With the use of high purity raw materials in combination with high firing temperatures it is possible to produce direct bonded bricks where a ceramic bond between the chrome ore and periclase particles exists.

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• ### Enhanced slag resistance of magnesia refractory castables

Oct 15 2020 · At the end of slag resistance experiments the corroded crucibles were cut into two parts perpendicular to the diameter then the slag resistance properties were evaluated by calculating the corrosion index (IC) and penetration index (IP) 13 (1)Ic= (Sc/S0) 100 (2)Ip= (Sp/S0) 100 Where the S0 is the original area of the crucible aperture SC is the corroded area of the crucible and

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• ### To the metodics of determining the slag resistance of

To the metodics of determining the slag resistance of refractories . By Петр Петрович

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• ### Effect of Addition of Non-oxides on the Slag Corrosion

same rate. A simulated waste slag synthesized was placed on the top surface of the specimen. After the corrosion test the penetration depth was measured by microscopic observation and XRD measurement was done for the depth direction. Wettability tests were carried out to determine the wettability of slag on the refractories.

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• ### High Performance Castable Refractories for Cupola Applications

replenished over the duration of the test. In all cases the results give some relative indication of the resistance to slag corrosion of the refractories being tested. SLAG CUP TESTING Slag cup testing is a static test procedure whereby the materials are exposed to slag and iron for a prescribed period.

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• ### 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.

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• ### Basic Shaped RefractoriesIspatGuru

Basic refractories containing chrome has excellent slag resistance superior spalling resistance and good hot strengths. With the use of high purity raw materials in combination with high firing temperatures it is possible to produce direct bonded bricks where a ceramic bond between the chrome ore and periclase particles exists.

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• ### (PDF) SURVEY OF LITERATURE ON SLAG TESTS FOR REFRACTORY

Slag melted to determine the slag resistance of the refractory tests and the methods used to measure the extent of In addition to observing the depth of slag penetra- slag attack have been classified and awanged in outline tion Chesters and Howie 17 Chesters and Lee 18 and form.

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• ### Slag Resistance Scientific.Net

A technique has been developed that makes it possible to determine the degree of interaction of a refractory with metal (slag) in ground samples under the binocular microscope MBS-9. The proof of high slag resistance is the depth of penetration of metal and slag into the structure of the sample by not more than 1 to 2 mm without changing the

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• ### Corrosion resistance of Al–Cr-slag containing chromium

Aug 01 2018 · Al–Cr slag is the solid waste generated by the smelting of Cr metal. It presents a range of environmental hazards. This study addressed the corrosion resistance of Al–Cr slag containing chromium–corundum refractories to slags with different basicity. Herein we provide suggestions for the use of Cr–corundum of different basicity in kilns.

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• ### SLAG 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.

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• ### Enhanced slag resistance of magnesia refractory castables

Oct 15 2020 · At the end of slag resistance experiments the corroded crucibles were cut into two parts perpendicular to the diameter then the slag resistance properties were evaluated by calculating the corrosion index (IC) and penetration index (IP) 13 (1)Ic= (Sc/S0) 100 (2)Ip= (Sp/S0) 100 Where the S0 is the original area of the crucible aperture SC is the corroded area of the crucible and

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• ### Pyrometallurgy_Lecture_14_RefractoriesLearning

11-5 Refractories Slag Resistance The resistance of refractories towards slags is determined first of all by equilibrium relations. It is clear that a slag that is already saturated with a compound cannot further attack a refractory that consists of the solid phase of that compound. Thus for example acid steel-making slags that have high silica content are melted in silica lined furnaces.

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• ### Refractory Material Testing Laboratory Sigmatest

This test helps in determining the deformation behaviour of refractory ceramic products subjected to a constant load and increasing temperature. Test Method ISO 1893 Abrasion Test This test helps in determining the relative abrasion resistance of refractory bricks at room temperature. This test method can be performed for castable refractories.

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• ### To the metodics of determining the slag resistance of

To the metodics of determining the slag resistance of refractories . By Петр Петрович

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