METHOD TO CONTROL EMISSIONS OF ALCALINE SOLUTIONS ACROSS BAYER CIRCUITS

摘要

Patent invention summary: "method for controlling emissions". The present invention refers to a method for controlling mercury emissions from aqueous alkali solutions in the Bayer circuit, the method comprising the steps of: introducing a source of copper ions to an aqueous alkaline solution containing the sulphide ions; preci Add a kind of copper; and precipitate a kind of mercury; thus facilitating the removal of mercury from the aqueous alkaline solution.