Hertha Metals, Inc.

[[the Goal of the Project Is to Build a Strong Technical Foundation Regarding Slag Design for the Development of the Hertha Green Iron & Steel Production Process. Ensuring the Optimal Slag Medium Is Fundamental to Successful Process Implementation.]] 3.1 Objectives [[the Project Has a Number of Objectives Stemming From the Role That the Slag Plays in Ensuring an Efficient and Effective Smelting Process.]] 3.1.1 Slag Composition Optimization [[the Core Objective Is to Optimize the Composition of the Slag Bath for Hydrogen Reduction of Iron Oxide in a DC Eaf. This Requires Attention to a Number of Specific Sub-objectives:]] 3.1.1.1 Iron Oxide Assimilation in the Bath [[to Design a Slag With the Ability to Quickly Assimilate the Iron Oxide Feed Through Dispersion and Dissolution.]] 3.1.1.2 Iron Oxide Reduction Rate [[to Optimize the Slag Composition for Rapid Hydrogen-slag Reaction Kinetics to Make Most Efficient Use of the Hydrogen Reductant.]] 3.1.1.3 Slag Heat Transfer [[to Ensure the Slag Has Appropriate Properties to Effectively Transfer Heat From the Area of Concentrated Heat Generation at the Electric Arc to the Iron Oxide Feed and Hydrogen Reductant.]] 3.1.1.4 Slag Bath Containment [[to Develop a Slag Composition That Allows for a Sustainable Slag Freeze Lining Compatible With the Desired Refractory Furnace Lining.]] 3.1.1.5 Slag-metal Separation [[to Optimize Conditions for the Separation of Metal and Slag Within the Constraints of Process Fluid Dynamics.]] 3.1.2 Evaluation of Refractory Compatibility [[to Understand the Reaction Mechanisms Between Different Refractory Materials and Slag Compositions. This Work Will Be Conducted by Idaho National Laboratory.]] 3.1.3 Integrated Slag-process Model [[to Construct a Process Model of the Slag Bath Which Integrates All Critical Features Covered in This Project to Quantitatively Predict the State of Each as a Function of Slag Composition and Operating Conditions.]] 3.1.4 Pilot Testing [[to Demonstrate 300 KG Per Day Scale Operation of Green Iron Production Through the Novel Hydrogen-electric Smelting Reduction Furnace. Success Will Be Demonstrated by Pilot Tests Which Assess Slag Design for the Integrated Process Where All Phenomena Are Present.]]