Cerámica Wiki
Advertisement





español: Arcilla de bola

Ball clays are kaolinitic sedimentary clays, that commonly consist of 20-80% kaolinite, 10-25% mica, 6-65% quartz. Localized seams in the same deposit have variations in composition, including the quantity of the major minerals, accessory minerals and carbonaceous materials such as lignite.[1] They are fine-grained and plastic in nature.

Ball clays are relatively scarce deposits due to the combination of geological factors needed for their formation and preservation. They are mined in parts of the Eastern United States and from three sites[2] in Devon and Dorset in South West England.[3] They are commonly used in the construction of many ceramic articles, where their primary role is to either to impart plasticity or to aid rheological stability during the shaping processes.

History[]

Se cree que el nombre "arcilla de bola" deriva del tiempo en que la arcilla se extraía a mano. Se cortó en cubos de 15 a 17 kilogramos y durante el transporte las esquinas de los cubos se redondearon dejando "bolas". [1]

El uso cerámico de las arcillas de bolas en Gran Bretaña se remonta al menos a la época romana . El comercio más reciente comenzó cuando se necesitaba una arcilla para construir pipas de tabaco en los siglos XVI y XVII. ☃☃ En 1771, Josiah Wedgwood firmó un contrato de 1400 toneladas al año de arcilla con Thomas Hyde de Purbeck, lo que le permitió tornear cerámicas con revestimiento más delgadas.[4]

See also[]

Notes and references[]

  1. 1,0 1,1 What is ball clay?. Industrial Minerals Association - North America. Retrieved on 2008-08-05.
  2. The Bovey Basin in South Devon, the Petrockstowe Basin in North Devon and the Wareham Basin in South Dorset.
  3. Highley, David; Bloodworth, Andrew; Bate, Richard (2006). Ball Clay - Mineral Planning Factsheet (pdf file). British Geological Survey. Retrieved on 2008-08-05.
  4. History of Ball Clay - Swanage Railway. The Purbeck Mineral & Mining Museum. Retrieved on 2008-08-05.


Accessories-dictionary: Diccionario[]

¨

English:

 : Ball clay *

français :

 : Ball clay :

español:

 : Arcilla de bola

Advertisement