Ladle porous plug system essentially consists of a plug, sleeve, block, shell, C clamp,tie-down system. Sleeves provide stability to the plug and the air setting plastic provides good strength and minimal shrinkage in service to prevent any joints or looseness in the material. Mortar is added to compensate for the horizontal expansion of the plug.
Made from high-purity, high-density, high-strength corundum based materials and a matrix-adjusted system (MAS), Our series of purging plugs, with unique radiated through-slots structure, show the features of stable structure, high and adjustable gas-flow, high purging rate, good corrosion/erosion resistance and long service life.
Ladle Porous Plug Application:
Different types of purging plugs are being used for steel ladles, which include directional models (slot type plugs, segment type plugs) and non-directional ones (porous plugs, hybrid plugs); preinstalled (non-changeable) and replaceable (changeable) sets. Ladle Purging plugs, especially porous plugs and slit plugs, are essential for efficient steel production. By promoting effective stirring, they enhance steel quality and contribute to a successful steelmaking process. Secondary steelmaking using gas stirring in ladles improves steel cleanliness, facilitates alloy trimming and homogenisation of composition and temperature, and promotes sulphur removal when required . With the increased demands from ladle metallurgy, gas purging plugs have become increasingly popular as a method for introducing stirring gases into the ladle. In order to reach these objectives, however, the purging plug has to be reliable, safe and cost-effective.
Secondary metallurgy has become an essential step for high quality steel production. For the processes in secondary metallurgy-which are mainly performed in the steel teeming ladle, purging plug is a critical component in ladle bottom purging system. The major goal of the ladle gas purging system is to stir molten steel, aiming for:
- Fine adjustment of temperature, steel and slag chemistry
- Removal of non-metallic inclusions
- Desulfurization
- Steel cleanliness
Ladle Porous Plug Benefit:
Ladle Gas Purging System is equipped with standard accessories like withdrawal jack adaptor, wear indicator, multiple slits that are made of 316 grade stainless steel and ceramic plate. This system can resist slag and molten steel. Designed by skilled technocrats, offered Ladle Gas Purging System is appreciated for its optimum strength and long lasting quality. Standard of this product has been tested on the basis of its design precision, performance, service life, operating cost etc.
The installation of the porous plug on the ladle bottom is useful in homogenizing temperature and chemistry, better slag/metal interaction for impurity removal, faster processing through ladle metallurgy stations, higher yields. However, stirring is associated with increased bottom wear and shorter campaign life due to the abrasion of the bottom. Vigorous purging leads to bath turbulence which causes wear of the side walls. Thus ladle stirring is detrimental from the refractory point of view. The position and the number of plugs are also essential in determining the effectiveness of the purging. Although, ladle stirring can also be brought about by the use of electromagnetic stirring.
