= China Clays = China Clays - What are the Differences?
Ceramics? Stoneware? China? Bone China? The properties of clays include plasticity, shrinkage under firing and under air drying, fineness of grain, color after firing, hardness, cohesion, and capacity of the surface to take decoration. From these properties clays are divided into classes or groups; products are generally made from mixtures of clays and other substances. The purest clays are the china clays or kaolins. "Ball clay" is a name for a group of plastic, high-temperature clays used with other clays to improve their plasticity and to increase their strength.
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Its is first made out f clay then polished to become china. China is a type of pottery.
They made the clay soldiers to Guard the first emperor of china's tomb. Farmers discovered the underground tomb when trying to dig a hole for a well.
A pinch pot is a small clay pot, made by starting with a ball of clay and pressing a hole on it, then pinching the sides until it becomes a pot.
Hard and dry clay dose not
Pottery is mainly of three types. Earthenware used for pottery tableware and decorative objects with a composition of 25% ball clay, 28% kaolin, 32% quartz and 15% feldspar. Stoneware, used in making hotelware, kitchenware, cookware, garden products, electrical, chemical and laboratory ware, will be having a composition of plastic fire clays 0-100% , ball clays 0-15%, quartz, 0-30% feldspar and chamotte 0 -15%. Porcelain is also considered as pottery made by heating raw materials, generally including clay in the form of kaolin, in a kiln to temperatures between 1,200 °C (2,192 °F) and 1,400 °C (2,552 °F).