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Five refractory raw materials that are indispensable for the development of new refractory materials

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Refractory raw materials No matter how the technology develops, refractory raw materials are the basis of refractory materials. Refractory raw materials directly determine the quality of refractory materials and affect the development of refractory materials. All the development of new refractory materials cannot be separated from the support of refractory raw materials. For example, magnesia-alumina …

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How to add water to refractory castables during construction

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Refractory castables are a type of unshaped refractory materials. They are a mixture of refractory aggregates, binders and admixtures, which can be used as mud after adding water (or liquid binder) and mixing. Refractory castables have a certain coagulation and hardening time after construction. Therefore, after casting and forming, they need to be cured for …

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Requirements for refractory mortar in refractory brick masonry

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(1) The working conditions of the mud in the joints of refractory masonry bricks are exactly the same as those of refractory bricks. Therefore, the main technical indicators of the two, refractoriness and chemical composition, should also be the same or compatible.(2) The type and brand of mud should be selected by the designer according …

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Factors affecting the life of refractory bricks in ladle slag line

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The ladle slag line is the part where the molten steel is in direct contact with the air. At present, most of the ladle slag line masonry uses magnesia carbon bricks. Due to the temperature difference and the existence of oxygen-rich environment, the erosion rate of this part is significantly faster than other parts. In …

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Technological progress of refractory materials for tundish of continuous casting of molten steel

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The tundish is a container for holding molten steel after the steelmaking ladle equipment and for diverting the molten steel for continuous casting. The tundish is the last container in the continuous casting system that contacts the refractory material before the molten steel is formed. It is an important part of the continuous casting process …

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How to make refractory bricks and special shaped refractory bricks

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Production process of refractory bricks The production of refractory bricks goes through multiple production processes and procedures. Each Zhengyuan refractory brick undergoes strict quality control. Today, the editor will introduce to you how refractory bricks are made. Refractory brick production process introduction: raw material selection, high temperature calcination, sorting and grading, crushing and grinding, scientific …

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Selection and laying methods of refractory bricks in various parts of blast furnace

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1.Furnace bottom There are three structural forms: full ceramic, full carbon brick and integrated furnace bottom. In the past, when designing the furnace bottom, heat dissipation and cooling conditions were not taken seriously, which was a typical corrosion-inhibiting full ceramic design. At present, this form is only suitable for the furnace bottom structure of small …

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Basic requirements for quartz sand lining materials for medium frequency induction furnaces

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Quartz sand is an acidic furnace lining material, due to the low price and wide range of sources. Once the silica sand after the first furnace high-temperature sintering to complete its phase change, volume expansion changes, the late melting of the furnace lining volume change is very small, thermal stability and anti-ferrous liquid leakage performance …

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The development and performance of magnesia carbon bricks and the advantages of ladle aluminum carbon bricks

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Aluminum carbon bricks are mainly composite refractory materials produced by combining alumina (such as sintered/fused white corundum, sub-white corundum, brown corundum, plate-shaped alumina, sintered bauxite, etc.) and carbon/graphite raw materials. In most cases, additives (such as SiC, Si, Al, etc.) are also added to improve their performance. According to the production method, Al2O3-C refractories can …

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Uses and application parts of magnesium carbon bricks in steel mills

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1.Overview of magnesium carbon bricks for steel mills Steel mill magnesium carbon brick is a high-performance refractory material, made of graphite, graphite coke, calcium raw materials, aluminum and other raw materials and magnesium raw materials, hot forming at high temperature. The material is characterized by good chemical stability, good thermal conductivity, etc. It can be …

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