Research on the Wetting and Corrosion Behavior Between Converter Slag with Different Alkalinity and MgO-C Refractories

Liu, Jihui; Sheng, Hongyuan; Yang, Xiulun; Hou, Xinmei

doi:10.1007/s11085-021-10083-2

Cited by 24 publications

(7 citation statements)

References 16 publications

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“…Moreover, the formation of low melting point phases such as MgSiO 3 and CaZrO 3 that occupied voids and porosities in sintered samples also caused more condensation. 26,27…”

Section: Resultsmentioning

confidence: 99%

“…Moreover, the formation of low melting point phases such as MgSiO 3 and CaZrO 3 that occupied voids and porosities in sintered samples also caused more condensation. 26,27 The density measurements demonstrate that the optimal amount of SiC addition is 2.5 wt.%, as it results in the formation of optimal phases that increase the density of the samples and create a strong bond within their structure. However, if the amount of SiC is increased to 5 wt.%, the densification decreases, most likely due to the improper distribution of SiC particles, their agglomeration within the structure, and an inadequate compaction and annealing process.…”

Section: Bulk Densitymentioning

confidence: 99%

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Mechanical behavior and slag corrosion resistance of ZrSiO₄/SiC reinforced MgO-C refractories

Zandi

Manafi

Limooei

2023

Proceedings of the Institution of Mechanical Engineers, Part L:

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This investigation proposes a novel solution to enhance the thermal shock and slag corrosion resistance of low-carbon MgO-C refractories by integrating yttria-stabilized zirconium silicate (YSZS) and silicon carbide (SiC) powders in them. The results of this study revealed that incorporating YSZS and SiC particles in low-carbon MgO-C refractories improved the overall qualities of the refractories synergistically and increased the thermal shock resistance (TSR) from 11 cycles (for MgO) to 18 and 15 cycles, respectively, owing to their lower coefficients of thermal expansion (CTE) compared to magnesite. The addition of YSZS caused the cold compressive strength (CCR) of the MgO-C refractories to increase from 450 to 480 kg/cm2. The mechanical properties of the refractories were elevated as a result of fracture toughness enhancement and crack propagation within and between grains on the fracture surface. CaZrO3, Mg2SiO4, and MgSiO3 phases developed in the grain boundaries and served as corrosion-resistant materials, thereby resulting in reduced porosity and pore closure. Additionally, the TSR of the reinforced bricks was significantly improved due to their low CTE as compared to MgO, while slag resistance enhancement was caused by the formation of the CaZrO3, Mg2SiO4, and MgSiO3 phases.

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“…Moreover, the formation of low melting point phases such as MgSiO 3 and CaZrO 3 that occupied voids and porosities in sintered samples also caused more condensation. 26,27…”

Section: Resultsmentioning

confidence: 99%

Section: Bulk Densitymentioning

confidence: 99%

Mechanical behavior and slag corrosion resistance of ZrSiO₄/SiC reinforced MgO-C refractories

Zandi

Manafi

Limooei

2023

Proceedings of the Institution of Mechanical Engineers, Part L:

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“…Alkalinity [12,13] is one of the critical factors affecting the performance of desulphurization slag. To explore the rationality of the binary slag melting process, and fix the content of other components within a reasonable range, the content of Al 2 O 3 is fixed at 12.6%, the content of MgO is fixed at 9.5%, and the content of S is fixed at 1.2%.…”

Section: Experimental Results and Analysismentioning

confidence: 99%

A new method for evaluating the melting performance of the slag

Jiang

Tian

Hao

et al. 2023

Ironmaking & Steelmaking

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Aiming at the shortcomings of traditional slag use of height to represent melting temperature, the melting performance of desulfurization slag under different binary alkalinity is tested, and any time image in the melting process is binarized to obtain the realtime area of slag heating and melting process.The area change rate is obtained from the real-time area and the initial area, and the melting performance of the slag is evaluated by the area change rate. The results show that using the change of the whole area of the slag instead of the change of the height to evaluate the melting performance of the slag can comprehensively evaluate the melting process of the slag, which not only improves the accuracy and universality of the evaluation of the melting performance of the slag but also shows the change rule of the low-temperature slag expansion process.

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“…Corrosion resistance of various MgO-C refractories was investigated too. Authors [17][18][19][20][21][22][23] described the corrosion mechanism of MgO-C materials in different conditions. All mentioned researches pointed out that chemical purity of MgO-C bricks magnesia part is crucial for providing excellent corrosion resistance.…”

Section: Introductionmentioning

confidence: 99%

Method of raw materials selection for production of the MgO‐C bricks of comparable properties using PCA and K‐medoids

Sado

2023

Int J Applied Ceramic Tech

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MgO‐C refractories are zonally installed in most of the key heat devices of steel and iron metallurgy with the exposure to various corrosive factors. One of the most significant factors is low‐temperature decarburization resulting in the oxidation of carbon in MgO‐C refractories and loss of its properties. Moreover MgO‐C materials are exposed for direct attack of liquid slag or steel melt which easily infiltrate the porous, decarburized hot face of the bricks. Cost of MgO‐C materials of high quality is important for refractories user. For this reason researches try to develop materials of high quality but with lower cost by substituting fused raw materials with sintered ones or with recycled MgO‐C. In this article method of selecting the raw materials for production of MgO‐C bricks with comparable properties is shown. 20 different variants of MgO‐C materials were prepared with the use of various quality raw materials. Basic properties of the industrially produced MgO‐C bricks were measured. To select recipes with similar quality PCA method and K‐medoids algorithm were applied. To verify the results corrosion resistance of selected MgO‐C materials were tested with the use of induction furnace of medium frequency.This article is protected by copyright. All rights reserved

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Research on the Wetting and Corrosion Behavior Between Converter Slag with Different Alkalinity and MgO-C Refractories

Cited by 24 publications

References 16 publications

Mechanical behavior and slag corrosion resistance of ZrSiO₄/SiC reinforced MgO-C refractories

Mechanical behavior and slag corrosion resistance of ZrSiO₄/SiC reinforced MgO-C refractories

A new method for evaluating the melting performance of the slag

Method of raw materials selection for production of the MgO‐C bricks of comparable properties using PCA and K‐medoids

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Research on the Wetting and Corrosion Behavior Between Converter Slag with Different Alkalinity and MgO-C Refractories

Cited by 24 publications

References 16 publications

Mechanical behavior and slag corrosion resistance of ZrSiO4/SiC reinforced MgO-C refractories

Mechanical behavior and slag corrosion resistance of ZrSiO4/SiC reinforced MgO-C refractories

A new method for evaluating the melting performance of the slag

Method of raw materials selection for production of the MgO‐C bricks of comparable properties using PCA and K‐medoids

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Product

Resources

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Mechanical behavior and slag corrosion resistance of ZrSiO₄/SiC reinforced MgO-C refractories

Mechanical behavior and slag corrosion resistance of ZrSiO₄/SiC reinforced MgO-C refractories