When building a kiln, a bonding agent is used, which is called refractory mortar or joint material (after adding water, it is called refractory mud). It is the main auxiliary material for kiln building and also the joint filler for refractory bricks. Refractory mortar can play the role of firmly bonding the initial masonry furnace body and preventing it from falling off.
Characteristics of Refractory Mortar
Kerui kiln refractory material mortar has good plasticity, convenient construction, high bonding strength and strong corrosion resistance. According to chemical properties, it is divided into acidic refractory mud, neutral refractory mud and alkaline mud. In addition, there are refractory muds for special occasions. Contact Kerui, we will customize the refractory mortar that best suits your kiln.
The particle size of refractory mortar varies according to the customer’s requirements. Its limit particle size is generally less than 1mm and some are less than 0.5mm or finer. In addition to being used as a joint material, customers can also use refractory mortar as a protective coating for linings by spreading or spraying.
Choose Refractory Mortar Based on the Fire Bricks Used
Refractory mortar should be selected according to the material of the refractory bricks used for masonry and cannot be mixed. Refractory mortar is divided into clay, high alumina, silica, magnesia, carbon, corundum and mullite according to the material. For example, high alumina mortar is used for the masonry of high alumina bricks, magnesia refractory mortar is used for the masonry of magnesia bricks and silica refractory mortar is used for the masonry of silica bricks.
Refractory mud is supplied in dry powder form. When used, add liquid gelling agent and mix evenly to form a slurry with moderate viscosity. This type of slurry is collectively called high-temperature refractory mud or high-temperature binder. According to the combination of liquid gelling agents, we divide it into water glass combined refractory mud, phosphoric acid combined refractory mud, aluminum phosphate combined refractory mud, etc.
