Ball clay, China clay, Feldspar, Silica, Dolomite, Talc, Calcite and Nepheline are the common materials used for most of the ceramic products. Each raw material contributes a certain property such as dry strength, plasticity, shrinkage, etc. to the ceramic body. Therefore, by careful selection of materials, desired properties are acquired for the final output. Powder preparation is a major consideration in the ceramic industry. Surface area, particle size and distribution, particle shape, density, etc. each have their own effect on production. Powder has to be prepared to meet required particle size, particle shape, and other requirements for a particular industry. Milling is done to get the desired particle size. Unlike in the ,advanced ceramics industry the purity of ceramic powder is not an issue in traditional ceramics.
The traditional ceramics industry originated long ago. Even thousands of years ago it was a well established practice in many parts of the world. Today there are many divisions of this industry. Pottery, tableware, sanitaryware, tiles, structural clay products, refractories, blocks, and electrical porcelain are some of the products of traditional ceramics.