Method for removing iron impurities and gathering cupric ions in copper sulfate solution
A technology of iron impurities and copper sulfate, applied in the direction of copper sulfate, etc., can solve the problems of affecting the working exchange capacity of ion exchange resin, resin poisoning failure, high process cost, etc., and achieve good iron removal effect, low production cost and simple process.
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[0035] Example 1: A way to remove CuSO 4 Iron impurities in the solution and enrichment of Cu 2+ The method includes the following steps:
[0036] CuSO with a concentration of 2.5g / L 4 Adjust the PH value of the crude solution to 2~4 with sulfuric acid, and use the corrosion-resistant infusion pump to reduce the CuSO 4 The crude solution is injected into a column equipped with 001×7 strong acid cation resin to remove Fe 3+ , Fe 2+ , CuSO during processing 4 The flow rate of the crude solution is 8BV / h, and low-iron CuSO is obtained after treatment 4 Solution
[0037] Pass the low-iron copper sulfate solution into the macroporous strong acid cation exchange resin column at a flow rate of 2BV / h to adsorb and enrich Cu 2+ , Cu in solution 2+ Ion exchange reaction with macroporous strong acid cation resin, Cu 2+ All are absorbed by the macroporous strong acid cation resin;
[0038] Adsorption of Cu by macroporous strong acid cation resin 2+ After saturation, backwash the resin with 18% s...
Example Embodiment
[0040] Example 2: A way to remove CuSO 4 Iron impurities in the solution and enrichment of Cu 2+ The method includes the following steps:
[0041] CuSO with a concentration of 3.0g / L 4 For crude solution, adjust the PH value to 2~4 with sulfuric acid, and use corrosion-resistant infusion pump to remove CuSO 4 The crude solution is injected into a column equipped with 001×7 strong acid cation resin to remove Fe 3+ , Fe 2+ , CuSO during processing 4 The flow rate of the crude solution is 10BV / h to obtain low iron CuSO 4 Solution
[0042] Pass the low-iron copper sulfate solution into the macroporous strong acid cation exchange resin column at a flow rate of 4BV / h to adsorb and enrich Cu 2+ , Cu in solution 2+ Ion exchange reaction with macroporous strong acid cation resin, Cu 2+ All are absorbed by the macroporous strong acid cation resin;
[0043] Adsorption of Cu by macroporous strong acid cation resin 2+ After saturation, backwash the resin with 18% sulfuric acid at a flow rate ...
Example Embodiment
[0045] Example 3: A way to remove CuSO 4 Iron impurities in the solution and enrichment of Cu 2+ The method includes the following steps:
[0046] CuSO with a concentration of 4.5g / L 4 For the crude solution, adjust the PH value to 2~4 with sulfuric acid, and use a corrosion-resistant infusion pump to drive into a column equipped with 001×7 strong acid cation resin to remove Fe 3+ , Fe 2+ , CuSO during processing 4 The flow rate of the crude solution is 12BV / h to obtain low iron CuSO 4 Solution
[0047] Pass the low-iron copper sulfate solution into the macroporous strong acid cation exchange resin column at a flow rate of 5BV / h to adsorb and enrich Cu 2+ , Cu in solution 2+ Ion exchange reaction with macroporous strong acid cation resin, Cu 2+ All are absorbed by the macroporous strong acid cation resin;
[0048] Adsorption of Cu by macroporous strong acid cation resin 2+ After saturation, backwash with 18% sulfuric acid at a flow rate of 3BV / h for desorption to obtain the desorptio...
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