The coal washing process demands a closed water circuit and efficient tailings disposal to satisfy both economic and environmental demands. Our Ciba® MAGNAFLOC® reagents are used to clarify the wastewater prior to recycling.

Often fine clays are present with the coal and these may require specialist products such as our dry addition polydadmac technology to maximize the water clarity. Ciba’s in process filtration aids improve the recovery of fine coal.

Tailings disposal is rapidly becoming a key environmental problem for the coal industry which has traditionally used lagoons or expensive filtration systems to remove clay waste from the process.