The rapid and selective dissolution of magnesium alloy

摘要

Magnox, including any magnesium hydroxide and magnesium carbonate present, is dissolved in a solution of magnesium hydrogen sulphate (or magnesium and sodium bisulphate). Nimonic alloy and some other alloys do not dissolve thereby allowing separation. Approximately half of the magnesium sulphate produced can be disposed of to sea or by another disposal route. The remaining half is recycled and reacted with sulphuric acid to produce fresh magnesium bisulphate reagent. The process cycle is then repeated and more Magnox dissolved. For sodium bisulphate dissolution the whole of the magnesium sulfate and sodium sulfate produced is discharged to sea.