In modern cast iron production, cupola furnaces are being phased out due to environmental concerns, and most foundries have switched to medium-frequency induction furnaces for melting. Compared to cupolas, the medium-frequency melting process is relatively simple; the chemical composition and temperature of the molten iron are easily controlled, and the absence of carbon or sulfur […]
中频炉铸铁原材料的选用原则及炉料配比 Read More »
In converter steelmaking, the durability of tapping bricks is crucial for improving production efficiency and reducing costs. While traditional magnesia-carbon tapping bricks exhibit excellent slag resistance and thermal shock stability, decarburization under high-temperature and highly oxidizing environments remains a major factor limiting their service life. This paper proposes a low-carbon composite converter tapping brick, significantly
Installing a gas-permeable plug at the bottom of a steel ladle allows for the injection of inert gas to stir the molten steel; this process promotes the flotation of inclusions into the slag layer and homogenizes the steel’s composition and temperature. Consequently, the gas-permeable plug serves as a critical functional component in ladle refining. As
In modern steelmaking processes, the gas-permeable brick is a crucial functional component in ladle refining technology. By injecting inert gases—such as argon—into the molten steel through the gas-permeable brick located at the bottom of the ladle, the system generates the agitation necessary to homogenize the alloy composition and temperature of the melt. These bricks are
影响钢包透气砖座砖使用寿命的因素和改进方向 Read More »
In the continuous casting process, the submerged nozzle is located below the ladle and above the mold, serving as a passageway for molten steel and regulating its flow. The submerged nozzle directly influences the flow velocity and flow field distribution of molten steel within the mold. When producing high-quality steel grades such as aluminum-killed steel,
With temperatures dropping recently, many construction projects have been affected. While refractory products are generally less affected, today we’ll focus on unshaped refractory castables. We’ve previously discussed precautions for installing refractory castables in winter. Some companies may consider these less important, but in fact, several national standards contain specific regulations regarding the winter installation of
Refractory materials actually have different applications in various industries! However, their most common applications are in the following five areas. (I) Steelmaking system The steelmaking system includes equipment such as converters, electric furnaces, off-site refining furnaces, ladles and tundishes. In electric furnaces, dry vibrating materials, prefabricated or cast-in-place furnace covers or furnace cover triangles and
The strength of granular materials in castables is generally higher than the strength of the hardening body of the bonding agent and the bonding strength between the granules, so the room temperature strength of castables actually depends on the strength of the hardening body of the bonding agent. Changes in strength at medium and high
Types of refractory castables Read More »
Many customers do not know what properties they need to know when buying refractory bricks, and they are afraid that their questions are not professional enough and they cannot buy the right refractory bricks or other refractory materials. In fact, usually refractory bricks and other refractory materials only need to pay attention to the following
Refractory castables are a type of unshaped refractory materials. They are a mixture of refractory aggregates, binders and admixtures, which can be used for construction 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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