(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 …

Definition and types of refractory materials Read More »

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 …

The most comprehensive introduction to the construction of refractory plastics and ramming materials Read More »

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 …

Analysis of waste refractory market in 2025 Read More »

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 »

Cause analysis 1. The red fire at the roof expansion jointsFurnace top expansion joints in the red fire in the transverse and longitudinal expansion joints, basically along the direction of the expansion joints in a line. Furnace top pouring construction, expansion joint plate is generally blocked with wooden square, wooden square end size 100mm × …

Heating furnace roof anchoring brick redness and corrective measures Read More »

Heating furnace refractory function Heating furnaces are divided into continuous heating furnaces, pusher heating furnaces, regenerative heating furnaces and roller bottom heating furnaces. According to the different conditions of heating capacity, material grade and material shape, the appropriate heating furnace type is selected. The heating furnace used for metal heat treatment is also called a …

Long life solution for heating furnace lining refractory materials Read More »

Medium frequency furnace use process, the thickness of the refractory material used for the furnace lining is only 70-110mm, the inner side of the contact with the high temperature metal liquid, the outer side of the water-cooled coils close to the refractory material inside and outside temperature difference is very large, in the use of …

How to improve the life of medium frequency furnace lining Read More »

Converter steelmaking is currently one of the most widely used steel production methods globally. It has become the mainstream approach due to its high efficiency, short smelting cycle, low production costs, and adaptability to various steel grades. Statistics show that converter steelmaking accounts for over 70% of the world’s total crude steel production. In China, …

Analysis of the types of converter steelmaking and the damage mechanism of the refractory lining used Read More »

Types of refractory bricks Currently, the most common classification of refractories is the chemical composition classification, which can be divided into silica, aluminosilicate, magnesium, dolomite and carbon composite refractories. 1.Silica Refractories Silica refractory is a refractory material with SiO₂ as the main component and SiO₂ mass fraction not less than 93%, which can be either …

What refractories are used in crude copper smelting side blowing furnace Read More »

Continuous casting intermediate ladle is one of the key equipments in continuous casting process, which has the function of stabilizing and diverting the flow, and plays a very important role in the continuous casting operation and assuring the quality of molten steel. The stable pouring of the intermediate package is conducive to prolonging the residence …

Several measures to effectively improve the service life of continuous casting tundish Read More »

At present, there are 3 billet continuous casting machines, the varieties cover common building materials and industrial wire rod, compared with similar domestic steel mills, billet intermediate packages of refractory material exists in the intermediate package of low age, refractory accidents, etc., which has a greater impact on the production and quality stability. With the …

Configuration and construction method of refractories for intermediate package of billet continuous casting Read More »