English China Clays PLC, or ECC, was a mining company involved in the extraction of china clay, based in St Austell, Cornwall. It was once a constituent of the FTSE 100 Index but in 1999 was acquired by Imetal .

English China Clays Ltd. is perhaps best known as the world's largest producer of kaolin, a fine white clay used primarily for finishing glossy paper. This product as well as other specialty mineral pigments and chemicals produced by the company are used in the manufacture of high-quality printing and writing paper as well as in the manufacture ...

2022年1月12日 · By 1910, Cornwall was producing some fifty per cent of the world's china clay, something in the region of one million tonnes every year, seventy-five percent of which was exported. In 1919 the three main producers merged, calling themselves English China Clay , which continued to dominate the market until it was bought by French company, Imerys ...

2021年1月2日 · The mineral china clay (kaolin) is found in partially decomposed granite, an igneous rock which in its original hard state, forms the prominent moorland tors of Devon and Cornwall. In some areas, partial decomposition of granite masses took place millions of years ago when pressure created by disturbances in the Earth’s interior forced hot ...

Grolleg is the industry name for this blended English china clay, which features moderate plasticity, low titania content and relatively high flux content, low shrinkage and blue-white fired color. It is excellent for making translucent throwing or casting porcelains.

Grolleg, also known as English china clay, is a kaolin that is mined in Cornwall. Kaolins are also called china clays because the word kaolin stems from the name of a Chinese mountain where the high-quality clay was first mined.

ECC or English China Clays was primarily a mining company involved in the extraction of Kaolin, based in St Austell, Cornwall. See also - Formed in 1919 by the merger of West of England China Clay Co, Martin Brothers and North Cornwall China Clays. The three companies accounted for around half the output at the time.

The China Clay History Society is holding a drop-in event on Tuesday 9 April at Wheal Martyn Clay Works, to commemorate 100 years since the formation of English China Clays (ECC Ltd) on 9 April 1919. Did you or your relatives work in the china clay industry? Are you interested in investigating the role your ancestors had in china clay mining?

Kaolin, or ‘china clay’ as it is commonly called, is a hydrated aluminum silicate crystalline mineral formed over many millions of years by the hydrothermal decomposition of granite rocks. Hydrous kaolin is characterized by its fine particle size, plate-like or …

English china clay typically contains 75-85% kaolinite in ceramic grades and up to 94% for paper-coating grades. The most abundant other constituent is mica (5-20%), with small amounts of smectite, quartz, tourmaline and feldspar in ceramic clays.