Impurity removal in an iron conversion system

A system for producing iron, the system comprising:

• a dissolution subsystem having a first dissolution tank;
• wherein the first dissolution tank comprises a solid feedstock having one or more iron-containing ores and one or more non-iron impurities;
• wherein the first dissolution tank further comprises an acidic iron-salt solution for dissolving at least a portion of the one or more iron-containing ores to generate dissolved non-iron impurities and dissolved first Fe3+ ions in the acidic iron-salt solution;
• a reduction subsystem configured to reduce the first Fe3+ ions in the acidic iron-salt solution to produce formed Fe2+ ions in an iron-rich solution;
• a first impurity-removal subsystem configured to receive the iron-rich solution and to remove at least a portion of the one or more non-iron impurities from the iron-rich solution, thereby forming a treated iron-rich solution having at least a portion of the formed Fe2+ ions;
• wherein the first impurity-removal subsystem is configured to raise a pH of the iron-rich solution from an initial pH to an adjusted pH to precipitate the removed portion of the one or more non-iron impurities;
• an iron-plating subsystem having an electrochemical plating cell, the iron-plating subsystem being configured to receive at least a first portion of the treated iron-rich solution from the first impurity-removal subsystem;
• the electrochemical plating cell comprising a plating cathode configured for reducing at least a portion of the delivered formed Fe2+ ions to Fe metal;
• and
• an iron removal system configured for removing the Fe metal from the electrochemical plating cell.