METHOD AND DEVICE FOR TREATING PURGE DUST

摘要

The invention relates to a method and a device for treating the purge dust (2) which is produced during a manufacturing process, especially a clinker production process, and which contains i.a. chlorinated compounds and calcic compounds. The inventive method comprises the following steps: mixing the purge dust (2) with water (4); separating the mixture (7) into a liquid phase (8) comprising the water and i.a. the soluble chlorinated compounds, and a solid phase (9) consisting of the non-water soluble substances, including the rehydrated calcic compounds; and neutralising the liquid phase (8) until it reaches the desired pH.