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Comparison of the Hazardous Waste Slag Corrosion Resistance of SioxX-Zero and Cement-Bonded Al2O3–Cr2O3 Castables

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Al2O3–Cr2O3 castables are one of the important refractories for hazardous waste incinerators. In this work, the hazardous waste slag corrosion resistance of Calcium Aluminate Cement (CAC) and SioxXZero bonded Al2O3–Cr2O3 castables were comparatively investigated. The results showed that the slag corrosion and penetration resistance were related to the adopted slags (SiO2-rich, CaO-rich slag, and Fe2O3-rich) … Weiterlesen …

Evaluation of Test Methods for Refractory Bricks: A Comparison and Validity Study of some Cold Crushing Strength Standards

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Following Part 1 of this publication series which dealt with the procedure and the determination of precision of Cold Crushing Strength (CCS) data on several refractory brick grades, part 2 deals with the comparison of ISO 10059-1/EN 993-5 and ASTM C133. This includes the influence of specimen shape (50 mm cylinders and 50 mm cubes) … Weiterlesen …

Microstructural and Microscopic Investigations of MgO–C Bricks – Relationships between Gas Permeability and Apparent Porosity or Pore Size by Controlling Relative Density

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Changes in pore morphology from measurements of gas permeability, apparent porosity and pore size distribution of MgO–C bricks with controlled relative density were investigated. When the apparent porosity of the MgO–C bricks with increased relative density was decreased, the gas permeability was also decreased. In addition, with decreasing average pore size, MgO–C bricks decreased their … Weiterlesen …

Three Decades of Alphabond 300: An Overview of its Technical Advantages

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Alphabond 300 has been used in many applications since it was developed three decades ago. In this paper an overview is presented of the different technical advantages for applications where Alphabond 300 is used. Alphabond 300 is a calcia-free hydratable alumina based on pure alumina. In castables containing components such as silica and magnesia, the … Weiterlesen …

H2-Change: Refractories under Attack of Challenging Atmospheres during Transformation Process

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Common and advanced lining materials for gas driven DRI shaft furnaces are discussed. Based on reformed natural gas as a standard a closer look is taken to the transformation route via hydrogen boosted coke oven gas in an integrated steel plant up to the pure hydrogen use in a pilot plant, especially by using different … Weiterlesen …

Development of Microsilica-Gel Bonded Castable for Nose Ring Application

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Refractory castables with improved thermomechanical properties are necessary in the nose ring areas of cement production rotary kilns to withstand thermal cycling and clinker particle abrasion. However, commonly used low- and ultra-low cement castables have limited thermal shock and abrasion resistance due to lime presence in the binders. This study investigates the potential of a … Weiterlesen …

Sustainable Approaches to Monolithics

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Innovative ideas and technologies represent, on a more holistic level, a contribution to a self-sufficient, resource-efficient implementation of the company’s own raw materials with reference to new applications of the Eisenberger Luting Sand with its fractionable and defined finest grain fractions in micrometre and sub-micrometre scales. Above all, mineral raw materials such as Eisenberger Luting … Weiterlesen …

Energy Reduction in Refractories

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Between lower-than-normal gas reserves and the war in Ukraine, energy prices skyrocketed in 2022 and are expected to continue to fluctuate in 2023. This is hitting refractories hard, where temperatures upwards of 1800 °C are required and shutdowns can cost millions. Now, the entire industry is rethinking how things have always been done to offset the rising costs.

RHI Magnesita and Australian cleantech MCi Carbon Enter Longterm Strategic Cooperation to Decarbonise Refractories

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RHI Magnesita/AT has completed a multimillion-dollar investment in the awardwinning cleantech and is expected to significantly advance MCi’s Carbon Utilisation Technology (CCU). RHI Magnesita is investing several millions into research and development for innovative technologies abating carbon emissions to achieve its goal of becoming a CO2 neutral business.