Engineering
5 years ago

High magnesium content in limestone hinders gypsum dewatering in power plants.

IOP Conference Series Earth and Environmental Science
Chemical Analysis of High Moisture Content of Flue Gas Desulfurization Gypsum
Yin Li, Yuehua Feng, Yanyan Wang, Lin-hao Li

Paper Summary

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The high moisture content of flue gas desulfurization gypsum in coal-fired power plants is mainly due to the high magnesium content in limestone. This leads to faster crystal formation of gypsum and makes it harder for the crystals to come together and grow. This makes it difficult to remove water from the gypsum using a dewatering belt.