Copper Sulfide Leaching Potential Control to Reduce Iodine Loss
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Iodine volatilization loss during the leaching of copper sulfide ore containing iodide ion and iron (III) ion leads to increased iodine consumption and makes it difficult to accurately evaluate iodine loss in column leaching tests, especially when the electric potential of the leaching solution is high, posing challenges for efficient resource use and cost-effectiveness.
Innovation Solution
Adding a potential adjustment agent to lower the electric potential of the leaching solution, using iron (II) ions, sulfurous acid, or sulfite solutions, and controlling the iron (III) ion concentration to reduce iodine volatilization and improve recovery rates, while also evaluating iodine loss in column leaching tests by comparing initial and discharged iodine content.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If iodide ion and iron (III) ion are used for leaching copper from copper sulfide ore, then the leaching rate is improved, but iodine volatilization loss increases
Solution Approach 1:
The patent changes the electric potential parameter of the leaching solution by adding a potential adjustment agent. This parameter change suppresses iodine volatilization loss while maintaining the leaching rate improvement achieved by using iodide ion and iron (III) ion, thus resolving the technical contradiction between productivity and substance loss.
2Productivity
If the electric potential of the leaching solution is high, then the leaching process is more effective, but iodine volatilization rate increases
Solution Approach 1:
The patent introduces a potential adjustment agent to modify the electric potential parameter of the leaching solution. This creates an optimized potential range that maintains leaching effectiveness while suppressing iodine volatilization, resolving the contradiction between leaching effectiveness and iodine loss.
3Productivity
If iodine is continuously supplied to maintain high leaching rate, then the leaching efficiency is improved, but the cost and resource consumption increase
Solution Approach 1:
By adjusting the electric potential parameter through adding a potential adjustment agent, the patent reduces iodine volatilization loss. This parameter change decreases the amount of iodine that needs to be continuously supplied, thereby reducing iodine consumption and cost while maintaining leaching efficiency.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The method effectively reduces iodine volatilization loss, enhances iodine recovery rates, and improves the overall efficiency of the copper leaching process by controlling the electric potential and iron (III) ion concentration, allowing for more accurate iodine loss evaluation in column tests.
Implementation Method 1
a copper leaching step for leaching copper from the copper sulfide ore by using iodide ion and iron (III) ion
Implementation Method 2
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
Implementation Method 3
The potential adjustment agent includes a solution containing iron (II) ion
Data Source
AI summary
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.