Refractory clays are a type of clay that are able to withstand high temperatures without breaking or cracking. They are used in a variety of applications such as ceramics, kilns, and furnaces. There are several synonyms for the term refractory clay, including fire clay, ceramic clay, high-alumina clay, and heat-resistant clay. Each of these terms describes a type of clay that is able to withstand high temperatures without losing its structural integrity. Fire clay, for example, is a type of refractory clay that is used in the construction of fireplaces and chimneys. Regardless of the term used, refractory clays are an essential material for many industries that rely on high-temperature processes.