Kimia Ceram Zarin's Refractory Setting Retarder is a specialized additive for extending the working time of refractory castables and mortars. By controlling the hydration reaction of calcium aluminate cements (CAC), it extends the workability of refractory castables and prevents premature setting. This additive is essential for large-volume castable pours, working in high ambient temperatures, and preventing cold joints. Available in ready-to-use liquid form, it is compatible with various alumina refractory systems.
Enables larger volume castable pours per batch
Prevents cold joints in refractory linings
Improved surface quality of cast linings
Enables work in high ambient temperature conditions
Reduced refractory material waste
Refractory castables with extended working time
Refractory mortars for brick installation
Large-volume refractory castable linings
Kiln lining repairs in high ambient temperatures
Preformed refractory materials
When should a refractory retarder be used?
A refractory retarder is used when extended working time is needed, such as large-volume castable pours, working in high ambient temperatures (summer or near hot furnaces), or when there is a long distance between mixing and installation locations.
Does the retarder negatively affect the final strength of refractory castables?
No, Kimia Ceram Zarin's refractory retarder only delays the onset of setting and does not negatively impact final compressive strength or hot strength. Once setting begins, the hardening process continues normally.