Cement
Cement is composed of clinker, gypsum and additives with different contents. The basic properties of cement are determined by the cement clinker.
As we all know, the mineral of Portland cement clinker consists of tricalcium silicate (C3S), dicalcium silicate (C2S), tricalcium aluminate (C3A), and tetra-calcium ferroaluminate (C4Af), which requires us to mix corresponding materials when producing cement. Therefore, as an important source of Si and AI, clay powder is essential for cement production.
Pottery
Clays develop plasticity when wet. It’s the foundation of the formation of ceramic blank bud. Besides, clay makes the grouting mud and glaze have suspension and stability. Clay is the main body of ceramic body sintering. The content of Al2O3 and impurities in clay are the main factors that determine the degree of sintering temperature and softening temperature of ceramic body.
Paper-making
The main content of clay is kaolin. For paper making, the clay must be bleached first.
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