Method for recovering metal from metal element-containing substance
AssigneeIHI Corporation
InventorYasuyuki Fukushima
Life of this patent
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Abstract
A method for recovering a metal from a metal element-containing substance includes: bringing a metal element-containing substance into contact with a dissolving solution containing nitric acid and a salt to obtain a solution containing a metal ion or metal complex ion; and immersing an alga in the solution containing a metal ion or metal complex ion to produce a metal, wherein the concentration of nitric acid in the dissolving solution containing nitric acid and a salt is 2 to 50 mass %, and wherein the concentration of the salt in the dissolving solution containing nitric acid and a salt is 0.5 mass % or more.
Claims9
A method for recovering a metal from a metal element-containing substance, comprising steps of:
- bringing the metal element-containing substance into contact with a dissolving solution comprising nitric acid and a salt to obtain a solution comprising a metal ion or metal complex ion;
- and
- immersing an alga in the solution comprising a metal ion or metal complex ion to produce a metal,
- wherein a concentration of nitric acid in the dissolving solution is 2 to 50 mass %, and
- wherein a concentration of the salt in the dissolving solution is 0.5 mass % or more.
Dependencies are inferred from the claim text.