The purpose of ladle cover: Controlling the temperature drop of molten steel during transportation, refining and pouring has become a key factor in the innovation of the steelmaking industry in recent stages. The change of ladle thermal state is also one of the important factors for the converter to formulate the temperature compensation system of … Read more
Lightweight and high-strength refractory materials, using microporous mullite, mullite fine powder, alumina powder, alumina hollow balls and silica powder as raw materials, and cement as binder, were prepared to prepare lightweight mullite castables. The effect of the amount of alumina hollow balls added (addition mass fraction was 0, 3%, 6% and 9% respectively) on the … Read more
Sintering aids (SA) have great potential in enhancing the thermodynamic properties of refractory materials at medium temperatures (6001 200°C). Boron-based compounds are suitable because the phase transformations (i.e., decomposition, oxidation, etc.) they undergo at relatively low temperatures can lead to the generation of a boron-rich liquid phase and transient liquid phase sintering. 5 Sintering Aids The … Read more
The aggregate particles of self-flowing castables are spherical, and the construction method is pumping. It relies on its own gravity to flow and degas, so it is called self-flowing castables. Because the aggregates of self-flowing castables are spherical and have low water absorption, a suitable proportion of water reducer is added during construction to improve … Read more
Neutral linings for induction furnaces are usually made of acidic (silicon dioxide) or basic (magnesium oxide) compounds. It is very important to select the right refractory material for a given melting or holding application. The choice of refractory lining depends on many factors, such as melting temperature, holding time, volume, induction stirring, additives and alloying … Read more
Binder is a kind of amorphous refractory material, which is a material that binds refractory aggregates and powders and makes amorphous refractory materials strong. Aluminate cement is a kind of inorganic binder, which mainly makes amorphous refractory materials strong through the hydration of cement. Furnace Cement, aluminate cement is divided into calcium aluminate cement, barium … Read more
What material is used for the ramming material of the medium frequency furnace lining? The selection of ramming material for the medium frequency furnace lining depends on the atmosphere in the furnace. Because the atmosphere of the medium frequency furnace lining is divided into neutral, acidic, alkaline, and composite, and there are core induction and … Read more
Refractory plastics are made of 70~80% granular and powdery materials, 10~25% plastic clay, and other binders and appropriate plasticizers. They are in the form of hard mud paste and maintain high plasticity for a long time. Refractory plastics are mainly used in various heating furnaces that are not in direct contact with the melt. The … Read more
10%, 15%, and 20% (w) andalusite was introduced into low-cement high-aluminum castables to study the effect of andalusite addition on the high-temperature performance of the castables. The results show that the addition of andalusite can improve the volume stability of low-cement high-aluminum castables. With the increase of andalusite addition, its load softening temperature and high-temperature … Read more
Low-cement aluminum-magnesium Spinel Refractory Castable is an important material for ladle lining. It is mainly made of corundum, special grade alumina clinker, fused magnesia or high purity magnesia and magnesium-aluminum spinel, and is prepared using low cement technology. It is also called corundum or high aluminum-magnesium spinel refractory castable, also called composite aluminum-magnesium spinel refractory … Read more
