Lady carlyle sauce boat stand

Bone china

Bone china is a type of porcelain body first produced in the United Kingdom in which calcined ox bone, bone ash, is an essential constituent. It is differentiated by supreme whiteness, strength and translucency. lady carlyle sauce boat stand may be an example of this procedure.

The initial use of bone ash in ceramics is attributed to Thomas Frye in seventeen-forty-eight in which he used it to make a kind of soft-paste porcelain. In In the late eighteenth century, Josiah Spode carried on with further developments, and subsequently popularized it, by combining it with china clay, kaolin and China stone to compete against the imported Oriental porcelain.

The original basic recipe of three and a half parts china clay, six parts bone ash, and four parts china stone is still the standard English body.

Bone china production routinely uses a two stage firing process where the first "biscuit" is fired without a glaze at 1280°C (2336°F) giving a semiopaque product and then it is glaze, or glost, fired at a lower temperature under 1080°C (1976°F). lady carlyle sauce boat stand is probably produced using this method.

Soft-paste porcelain

Soft-paste porcelain is a kind of porcelain and therefore a ceramic product.

Its history dates from the first struggles by European potters to replicate Chinese porcelain by employing concoctions of china clay and ground-up glass (otherwise known as frit); soapstone and lime were also known to have been added in some compositions. As these initial mixtures suffered from high pyroplastic collapse, or slumping in the kiln at raised temperature, they were uneconomic to produce. Formulations were later developed based on kaolin, quartz, nepheline syenite, feldspars and other feldspathic rocks. These were technically superior and are still in production to this day.

Hard-paste porcelain

Hard-paste porcelain is a hard, dense ceramic that was originally manufactured from a combination of the feldspathic rock petuntse and kaolin fired at extremely high temperature. It was first made in China in around the 9th century.

The secret of its manufacture was not known in Europe until the early seventeen hundreds, when Böttger of Meissen, Germany uncovered the formula. Regardless of attempts to keep it secret, the process was used by other German ceramic potteries and in time became used throughout the length and breadth of Europe.

Hard-paste porcelain is fired at a range of temperatures to create a myriad of unique end results. Depending on the firing technique, hard-paste porcelain can be manufactured to resemble stoneware or earthenware. But generally, it is unnecessary to utilize hard-paste porcelain for these lower temperature ceramics. Hard-paste porcelain can be used to manufacture porcelain bisque, a hard crystalline material fired at very high temperatures in a pressure controlled environment. This process makes a translucid bright white ceramic. Unlike other bisque ceramics, porcelain bisque is almost inpenetrable by water, making it unnecessary to glaze the body before decorating. Manufacturers such as Lladro, Precious Moments and Hummel use hard-paste porcelain simply for this reason, this could include lady carlyle sauce boat stand.