Method for reducing the leachability of granular material...

B - Operations – Transporting – 09 – B

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23/374, 261/45,

B09B 3/00 (2006.01) B01J 2/00 (2006.01) B09B 1/00 (2006.01) C02F 11/00 (2006.01) C04B 18/04 (2006.01) C04B 20/10 (2006.01)

Patent

CA 2031091

This invention relates to a method for reducing the leachability of granular material, which essentially consists of an inorganic binder and a filler, which contains contaminants. According to the invention the granular material prepared is coated with a closed coating of water-insoluble and water-repellent material. Said coating being preferably a watertight and/or water- repellent polymer composition.

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