Kaolin Clay, which is also known as China Clay, is a type of clay mineral that is commonly used in the production of ceramics. It is a white, fine-grained material that is composed primarily of the mineral kaolinite.
In the ceramic manufacturing process, Kaolin Clay is used as a key ingredient in the formation of ceramic bodies, which are the raw materials used to make various ceramic products such as porcelain, bone china, and pottery. The clay is typically mixed with other materials such as feldspar, quartz, and ball clay to form a ceramic body.
Kaolin Clay is valued for its unique properties, which include high plasticity, good green strength, and low firing temperature. These properties make it an excellent ingredient for ceramic bodies, as it can be easily molded into various shapes and fired at lower temperatures than other types of clays.
During the firing process, Kaolin Clay undergoes a chemical transformation in which water molecules are released, leaving behind a hard, durable ceramic material. This process is essential for achieving the desired physical and chemical properties of the ceramic, such as strength, hardness, and translucency.
Overall, Kaolin Clay is a versatile and widely used material in the ceramic industry due to its ability to improve the plasticity and strength of ceramic bodies while lowering firing temperatures.