Before firing, quartz acts as an inert raw material that can modify the plasticity of the ceramic body. The particles of quartz typically exhibit polygonal sharp edges, which facilitate the rapid release of moisture from the green body, thereby increasing its water permeability. This characteristic is advantageous for the glazing process, as it can reduce drying time, minimize drying shrinkage, and help prevent deformation of the green body.

In porcelain production, quartz significantly affects the mechanical strength of the green body. The inclusion of appropriately sized quartz particles can substantially enhance the strength of the porcelain body; conversely, unsuitable particle sizes may have detrimental effects. Additionally, quartz contributes to the transparency and whiteness of the porcelain blank.

Within the glaze, silicon dioxide is the primary component responsible for creating a vitreous structure. An increase in quartz content within the glaze can elevate its melting temperature and viscosity while lowering the thermal expansion coefficient. Furthermore, quartz is a key factor in imparting high mechanical strength, hardness, abrasion resistance, and chemical resistance to the glaze.