Clay Technology in Ceramics

Abstract

Clays are used in the ceramics industries largely because of their contribution to the moulding and drying properties of the wares being produced; many clays, such as the flint clays, are used because of favorable behavior during firing or because they produce favorable properties in fired ware. To assure the most effective use of a clay, the ceramic technologist must meet problems of purification, aging, bacterial action, and the improvement of the working properties of clays and bodies through additions of non-plastic materials or chemicals. He deals with flocculation and deflocculation, thixotropy, and related phenomena in casting slips. Control of drying behavior is important. Finally, the ceramist is concerned with the influence of the clay content of ceramic bodies on their behavior during firing.

Physical Properties of Porous Clay Ceramic-Ware

“…Behavior of manufactured ceramic is controlled by mineral composition, phase change, particle size, environment, and volumetric constituents, particularly decomposable minerals [12]. Sawdust decomposes to charcoal which helps in the production of light weight frustum shaped PCCW.…”

“…From a potter's perspective, physical properties can be affected by manipulating compositions of clay and plant by-products [11,12]. Clay pottery and clay ceramics discussed herein are brittle [4].…”

Changes in technological properties and microstructure of clayey raw materials from the Corumbataí Formation upon drying: Relevance to dry route tilemaking process

“…Dondi, 1999;Celik, 2010;Galos, 2011;Medhioub et al, 2012;Dondi et al, 2014;Gliozzo et al, 2014;Lahcen et al, 2014;Ouahabi et al, 2014;Oikonomopoulos et al, 2015). Characterization of clayey raw materials (mineralogy, chemistry and surface properties) and investigation of their behavior and changes in technological properties at elevated temperatures are essential to study in order to succeed in the ceramic business (Henry, 1952;Dondi et al, 2014).…”