Burntstone
CERAMIC LIMITED

Plastic refractories

Plastic refractories are compositons which ram to a high density (low porosity) and good strength. They are either air setting, heat setting or chemically bonded. They do not use cement and are not free-flowing cement-less castables. They are installed by ramming, usually with pneunatic rammers, and develop properties after firing whch are similar to the related brick composition. They are much less sensitve to initial heating rates than castables and because the strength development is usually temperature dependent they are resistant to crack propogation. This means that they show more resistance to mechanical impact and thermal shock in service than castables.

Although plastic refractories are produced in slabs and can be installed in many places without formwork, it is generally possible to obtain similar compositions as a granular ramming material. In this condition the material can be installed behind formwork for quick installation of large areas such as troughs and ladles in metallurgical applications. In non-metallurgical work it is less common to find places where ram mixes are beneficial. The major exception is when installing in metal grids in FCCU installations.

Listed here are a few types of plastic material by way of example. For further information please telephone or E-mail us.