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Rock salt mineral resources refer to the ancient solid salt mineral deposits formed prior to the Quaternary in general. For China’s ancient salt mineral deposits, the essential salt-forming epochs are the Sinian, Triassic, Cretaceous and Tertiary and those of secondary importance are the Middle Ordovician, Early Permian, and Jurassic. According to such factors as the […]

About 80% of kaolin is used in the ceramic industry, while kaolin used in the papermaking industry occupies a small proportion. In 1997 the supply of China’s kaolin was about 1.50 million tons if poor-quality products of some small enterprises and stocks were deducted, and the consumption exceeded one million tons. The structure of consumption […]

In recent years, ceramic-grade kaolin products have been more than self-sufficient in China. Although the exports increase somewhat, a small amount is still kept in stock and paper coating-grade kaolin cannot meet the demand and needed to be imported. Now the construction of concentrated dressing factories is being accelerated in Guangdong, Fujian, Jiangsu, Hunan and […]

The term ‘kaolin’ is derived from kaoling (meaning ‘high hill’ in Chinese), a village in Jingdezhen City, Jiangxi Province, China, where kaolins were first discovered. Kaolin ore is clay (or claystone) in which the content of the kaolinite-subgroup clay minerals attains the usable content. According to the quality, plasticity and sand content, koalin ore may […]

Kaolin resources are abundant in China. More than 600 kaolin occurrences have been found and their resources are estimated at over 1.2 billion tons. Moreover, according to the prediction of the coal department, the prospective resources of sedimentary kaolins in coal measures of northern China may attain 18 billion tons. Thus it follows that the […]