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

Refractory News / By

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

Refractory News / By

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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Raw materials for manufacturing magnesium carbon bricks

Refractory News / By

Magnesia carbon brick is an unburned carbon composite refractory material. It is made of magnesium oxide, an alkaline oxide with a high melting point (2800°C), and a high melting point carbon material. The material is difficult to be corroded by slag and has added Various non-oxide additives and carbon binders. As a composite refractory material, …

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Analysis of the causes of ladle bottom blowing purging plug without outgassing

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With the continuous improvement of variety and product quality in metallurgical industry, all steel companies are increasing their investment and research on extra-furnace refining. A steel company is equipped with three LF furnaces, one VD furnace refining equipment, and the key to its process is the refining ladle bottom blowing purging plug permeability. Refining ladle …

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Magnesium carbon brick design structure should follow these principles

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Magnesium carbon brick is a composite material composed of magnesium sand, graphite, phenolic resin binding agent and anti-oxidant; In order to make the magnesium carbon brick to play its maximum performance, its design needs to take into account the structural matching and refractory raw material properties and so on. The main principles followed in terms …

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Three common ways to reduce high temperature erosion of magnesium carbon bricks

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Currently common methods to reduce the high temperature erosion of magnesium carbon bricks can be summarised in the following three points: 1. Selection of high-quality materials with stable compositions to improve the erosion resistance, thermal shock resistance and structural spalling resistance of the materials Selection of high-purity and high-quality electrofused magnesia, which has the advantages …

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How to ensure that the service life of neutral ramming mass is not damaged when doing lining

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The tamping process of neutral furnace lining is a relatively complicated process, and the knotting process is a very important link, which can affect the service life of the furnace. So, what should we pay attention to during the knotting process to ensure that the service life of the stove is not affected? There are …

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Magnesium carbon brick future research and development direction

Refractory News / By

Magnesium carbon bricks due to its outstanding properties will continue to develop in the field of iron and steel metallurgy, for this reason, through the summary and analysis of its research status quo, the next step in the development of magnesium carbon bricks, the direction and focus of the refining: Magnesium carbon bricks due to …

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