Shandong Sinorefractory New Materials Co.. Ltd

SNREF brand permeable bricks are characterized by high strength, excellent erosion and corrosion resistance, large air flow rate, and superior safety. The products are widely used in continuous casting and refining ladles. SNREF permeable brick categories include: slotted permeable bricks, porous permeable bricks, composite permeable bricks, and integral permeable bricks.
-Slot Plug(slit plug)
Slot plug is the most common structure in purging plug.
The gas channel could be designed and customized according to actual on-site using conditions, including refining steel grade,
refining workmanship, ladle capacity, temperature, hydrostatic pressure of liquid steel etc.
This can achieve the best blowing effect for purging plugs, ensure the longest service life, safety, stability and best air
permeability.
-Porous plug
Porous plug has better porosity and permeability.
Production technology is adding carbon-containing compound into mixture, since carbon-containing compound can burn out without
residue at low temperature, so we adopt low temperature burning out intermediate materials to get the initial porosity.
In porous type plug, inside distributes interpenetrating gas channels in different sizes.
When blowing stop, the steel and slag from ladle will infiltrate into the deep areas of the plug, to form a secure layer on working surface.
-Segment Plug
The segment plug is preferably made of good anti-stripping materials, the block body is not easy to occur fracture, with longer  service life. The cracks between different plates will not expand, so this segment plug design can avoid failure of bottom blowing  caused by tranverse brick fracture.

Application characteristics: In order to adapt to more and more strict refining conditions(especially special steel), and to meet the requirements of increasing  ladle life, the volume of plug becomes bigger and bigger. However the traditional slit type plug has single material and single  structure, easy to cause the phenomenon of tranverse fracture and failure of air blowing. Our researched segment plug has successfully soved the problem of fracture existing in traditional slit plug. Significantly increasing  the stability of refining process, ensuring the realization and improvement of quality refined steel.