The tundish is a refractory container that first receives the molten steel poured from the ladle and then distributes it to each crystallizer through the tundish water outlet. Its functions are: (1) Reduce the static pressure of the molten steel, maintain a stable molten steel level in the tundish, and inject the molten steel into …
Refractory materials, as their name suggests, can maintain their physical and chemical stability at extremely high temperatures. Not only are these materials resistant to high temperatures, they are also effective against thermal shock and chemical erosion, making them the preferred materials for heating furnace linings and working surfaces. However, refractory materials are not a single …
Classification and selection of refractory materials used in heating furnaces Read More »
During the pouring process of refractory castables, how to leave expansion joints mainly depends on the following 5 key points: 01 Contraction and expansion of refractory castables During the first heating process, refractory castables will shrink twice during dehydration at 50℃～200℃ and sintering at 900℃～1000℃. In other temperature ranges, heating will cause the castable to …
Expansion joints during pouring of refractory castables Read More »
By analyzing the composition of refractory materials in the tundish and the refractory damage problems that occur in daily work, we have identified the causes and proposed solutions to ensure the safe use of refractory materials. In continuous casting, a tundish is used to hold and transfer molten steel. The molten steel from the ladle …
Use and management of tundish refractory materials Read More »
There are many types of unshaped refractory materials, such as refractory castables, refractory plastics, refractory ramming materials, refractory spray coatings, refractory projection materials, refractory mud, etc. Although they are all unshaped refractory materials, they have different material formulas, different particle ratios, different construction methods, different application parts, different target functions, and even more different refractory …
The difference between refractory castables and refractory plastics Read More »
What are the functions of the tundish? What are the requirements for refractory materials? (1) The tundish is a container that mainly receives, stores and redistributes ladle water. Tundish metallurgical technologies such as adjusting temperature, adjusting trace alloy elements, and improving inclusions are now gradually developed. (2) The requirements for refractory materials are that the …
What refractory materials are used in continuous casting tundish？ Read More »
(1) Chemical attack, including silicon dioxide (SiO2), iron oxide (FeO), and carbon (C). Since the source molten iron contains a large amount of silicon, it is oxidized to produce acidic oxide silicon dioxide after blowing. When a new furnace is opened for smelting, it takes a certain temperature and time for the lime to melt …
Analysis of chemical and physical erosion mechanism for AOD lining refractories Read More »
After shoveling the material flat with a shovel, step on it with your foot to remove the air, insert the steel drill into the material and shake it repeatedly, and then use your foot to further solidify. The thickness of each layer of the dry ramming material should be 150~200mm. , And then use a …
Construction steps of dry ramming material at the bottom of electric furnace Read More »
In order to further promote the research on converter steelmaking technology, exchange the application experience of converter high-efficiency and low-cost steelmaking furnace protection technology, and promote new long-life, high-efficiency and environmentally friendly converter furnace protection materials and technologies, we invited well-known experts in the steelmaking industry and enterprise expert representatives to discuss and discuss hot …
New furnace protection technology to increase converter production and efficiency Read More »
Refractory materials are basic materials for high-temperature technology. They are closely related to the development of high-temperature technology, especially the high-temperature smelting industry. They are interdependent, mutually promoted, and developed together. So what are refractory materials? It generally refers to materials and products that are mainly composed of inorganic non-metallic materials and have a refractoriness …
Crucible furnace lining is a key component of medium frequency furnace, crucible furnace lining can be divided into three categories of acidic furnace lining, alkaline furnace lining and neutral furnace lining according to the composition, and the use of which kind of furnace lining should be fully considered the production process and the composition of …
Generation and prevention of neutral lining defects in 20t medium frequency furnace Read More »
The construction of refractory plastic is rammed with a tamping machine or a pneumatic pick. The construction of refractory ramming materials is similar to it. 1.Construction preparation According to the design requirements, the furnace steel structure, reference line and holes and other parts shall be fully inspected and accepted, and construction can only be carried …
Indefinite refractory material is a kind of refractory material that can be used directly without firing, which has the advantages of fast construction, simplified process, energy saving, good integrity, easy to replace, etc., and is widely used in metallurgical field. Among them, pummeling material is a kind of indefinite refractory material which is constructed by …
Theoretical basis for the application of magnesium refractory pounding materials Read More »
High-aluminum refractory materials have high stability against blast furnace slag, molten iron erosion, and wear at high temperatures, and are inert to carbon monoxide. However, in alkaline media, when working under high temperature conditions, it is found that corundum is converted into β-alumina. This conversion is accompanied by a 20% increase in volume, which leads …
How to choose refractory materials for blast furnaces in ironmaking production Read More »
Refractory raw materials refer to a product made of a variety of high-temperature resistant materials under specific process conditions. During use, refractory materials will be affected by various external conditions alone or in combination. Therefore, a variety of refractory materials with different properties are required to meet specific use conditions. The types and properties of …
Several classifications and application ranges of refractory materials Read More »
Refractory castable is a new type of refractory material that has good fluidity after adding water and stirring without calcination. It is an important variety of amorphous refractory materials. It is a mixture composed of refractory aggregate, refractory powder and binder (or other additives) in a certain proportion. It can be shipped in bulk form …
Performance, proportion and application of 12 different refractory castables Read More »
In the traditional production process of ductile iron, about 10% of carbon scrap steel is generally used for batching. This article only involves some issues that should be paid special attention to in the production process when increasing the proportion of carbon scrap steel when producing ductile iron in an induction furnace. Based on production …
How to choose the silica ramming mass? What are the key points of silica ramming mass? Read More »
Around New Year’s Day 2025, some genuine refractory raw materials experienced significant price fluctuations; affected by this, the market prices of waste refractory materials also experienced varying degrees of price fluctuations. Here is a simple analysis and forecast of several popular products on the market. 1.Waste ladle magnesia carbon brick In 2024, the overall market …
The refractories of ferroalloy electric furnace include three parts: furnace roof refractories, furnace wall refractories and melt pool refractories (furnace slope and bottom). In the process of ferroalloy smelting, different parts of the refractories are in different working conditions. Furnace top refractories are mainly subject to the erosion and impact of high temperature furnace gas …
Electric furnaces refractories often used in the production of ferroalloys Read More »
Magnesium carbon brick in use in addition to withstand high temperature, oxidation and slag erosion, but also need to withstand the impact of steel and scouring effect, which requires magnesium carbon brick has a high high temperature strength. High-temperature flexural strength that has become a measure of high-temperature strength of magnesium-carbon bricks indicators, but also …
