C - Chemistry – Metallurgy – 22 – B
Patent
C - Chemistry, Metallurgy
22
B
C22B 3/06 (2006.01) B09C 1/02 (2006.01) C02F 9/00 (2006.01) C04B 7/24 (2006.01) C22B 3/46 (2006.01) C22B 43/00 (2006.01) C21C 5/46 (2006.01) C21C 5/52 (2006.01) A62D 3/00 (2006.01)
Patent
CA 2117754
This invention relates to a hydrometallurgical process for the treatment of mercury contaminated muds. More particularly, this process pertains to a hydrometallurgical process for the treatment of Environmental Protection Agency designated K106 muds discharged from a mercury chlor-alkali plant. A hydrometallurgical process for the treatment of mercury containing solids comprising: (a) treating the solids in a first leach with acid and sodium hypochlorite to produce a leached product; (b) transferring the product from the first leach to a first washing thickener and thickening the leached product from the first leach; (c) transferring the underflow from the wash thickener to a second leach and treating the underflow product with acid and sodium hypochlorite to yield a second leached product; (d) transferring the product from the second leach to a second washing thickener and thickening the leached product from the second leach; and (e) transferring the product from the second wash thickener to a final dewatering process to yield a low mercury content.
Rockandel Michael A.
Twidwell Larry G.
Oyen Wiggs Green & Mutala Llp
Universal Dynamics Limited
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