Method of leaching copper from copper sulfide ore and method of evaluating iodine loss content of column leaching test of the copper sulfide ore
AssigneeJX Nippon Mining & Metals Corporation
InventorsShintaro KAWASHIRO, Akira MIURA
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Abstract
A method of leaching copper from a copper sulfide ore which includes adding a potential adjustment agent for lowering a potential of a leaching solution obtained after leaching copper from the copper sulfide ore by using iodide ion and iron (III) ion, the leaching solution being stored in a tank for storing the leaching solution.
Claims20
A method of leaching copper from a copper sulfide ore comprising adding a potential adjustment agent for lowering a potential of a leaching solution obtained after leaching copper from the copper sulfide ore by using iodide ion and iron (III) ion, the leaching solution being stored in a tank for storing the leaching solution.
A method of leaching copper from a copper sulfide ore comprising:
- a copper leaching step for leaching copper from the copper sulfide ore by using iodide ion and iron (III) ion;
- a step for adding a potential adjustment agent for lowering a potential of a leaching solution obtained by the copper leaching step and storing the leaching solution;
- a step for recovering a solution containing iodine from the leaching solution in which the potential adjustment agent is added;
- and
- a step for supplying a solution containing recovered iodine to the copper leaching step.
A method of evaluating iodine loss content of a column leaching test of copper sulfide ore comprising:
- conducting a column leaching test by supplying a leaching solution including iodide ion and iron (III) ion into a column in which copper sulfide ore to be examined is filled;
- and
- evaluating iodine loss content in the column leaching test based on a difference between an amount of total iodine content supplied to the column and an amount of total iodine content in a leaching solution discharged from the column, wherein a potential adjustment agent for lowering a potential of the leaching solution is added to the leaching solution discharged from the column.
Dependencies are inferred from the claim text.