RUNNING RESULTS OF THE SPL DETOXIFYING PILOT PLANT IN CHALCO

摘要

A new process to detoxify SPL had been developed in Chalco in December 2003, and the first SPL detoxifying pilot plant of China had been established in Chalco by the end of 2004. During the past five months of 2005, the pilot plant has been put into running. Till the end of May 2005, 104 tons SPL have been detoxified, and 119 tons innoxious solid residue has been received for processing. The average soluble F~- and CN~- in the solid residue are respectively 39.7mg/l and 0.053mg/l, which are lower than China national permitted discharge standard 50.0mg/l and 1.0mg/l, the final product is benign. Now the pilot plant is working well, and experiments on how to make use of the benign SPL solid residue are processing.