Method for the treatment of metals
AssigneeGlobal Ecoprocess Services Oy
InventorVesa Rissanen
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Abstract
A method for precipitating metal waste is characterized in that the waste which contains one or more dissolved metal salts, is mixed with a boron compound, and the pH is adjusted to a value at which precipitation takes place in the presence of precipitation nuclei necessary for the formation of metal borates.
Claims15
A method for precipitating metal waste in form of metal borates, wherein the waste which contains dissolved metal salts, is mixed with a boron compound, and the pH is adjusted to a value at which hydroxide precipitates of a first metal are formed to act as precipitation nuclei for formation of the metal borates, and
- wherein the pH is further adjusted to increase gradually for precipitating a second or further metals contained in the waste in form of metal borates.
Dependencies are inferred from the claim text.