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Manufacturing Process

What is porcelain?

Porcelain is obtained from an elaborate paste made with kaolin, quartz and feldspar. The result is a white, compact, hard and translucent ceramic product. These product properties allow for an infinity of usages in gastronomy, decoration, art objects, and even in technical and sanitary contexts.


From raw material to porcelain:

The manufacturing process of porcelain is divided into the following phases:

> mixing of the paste
> moulding of the pieces
> firing at a temperature of 900ºC ("biscuit" base product)
> glazing
> firing at a temperature of 1.400ºC (finished product)
> decoration (optional)
> firing at 900ºC (finished decorated product)

At first, all of the components are mixed with water to create a mouldable paste that can be worked into a specific shape using moulds or a press.

These shapes go through a first firing at a temperature of 900ºC for 20 hours, the water in their composition will evaporate, the organic substances will burn and the kaolin will be transformed into metakaolin. The material will have become unmouldable, with a 25 % porosity, ideal for the glazing process. The base porcelain we have obtained is known as "biscuit".".

The next step is to glaze the "biscuit" porcelain piece, firing it again at a temperature of 1.400ºC for 24 hours.

The result will be a finished white porcelain product, with a shiny or matt finish and very resistant, ready for any of its possible usages.
Finally, we can decide whether or not to decorate the piece, by hand or tracing, using pigments obtained from calcined metal oxides.
A last firing will be needed at a temperature of 900ºC so that these oxides are completely integrated and the colours develop their full liveliness.

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