Calcined alumina is a form of alumina treated at high temperatures to remove water, which increases its stability and strength in ceramic applications. This material is mainly used to reinforce clay bodys, increasing their structural strength and minimizing deformation during firing. Thanks to its stability, calcined alumina is essential in the manufacture of large ceramics and sculptural pieces, where it helps maintain the shape of the piece and prevents cracking during drying and firing.
Calcined alumina also provides hardness and abrasion resistance, which is beneficial in functional and technical ceramics. In glazes, its addition allows better shape retention and stability during the firing process, especially in high-temperature techniques. This material is essential in ceramic formulations that seek precision and durability, such as those used in high-strength tableware, architectural elements and industrial components that must withstand demanding conditions.
Interesting Fact
This type of alumina is also used in the manufacture of industrial products such as abrasives, thanks to its extreme resistance and its ability to withstand very high temperatures.
Helpful Tip
Incorporate calcined alumina into your clay bodys if you are working on large-scale projects that require structural stability. Test to ensure that it does not compromise the plasticity of the clay.
