QUESTION 1. [12] 1.1 What reagents are used for S removal from hot metal 1.2 Describe how S is removed from hot metal using: 1.2.1 Soda ash 1.2.2 Calcium carbide QUESTION 2. [8] Why is pre-treatment of Hot Metal important? QUESTION 3. [6] Draw a neat well labelled diagram of cross section of BOF top blown vessel showing refractory lining. QUESTION 4. [14] Describe the removal of Si in the BOF process. Section B - Ferro Alloy Production QUESTION 5. [14] 5.1 Write the names and formulas of four of the Manganese minerals found. 5.2 Discuss the theoretical considerations for the production of Ferro-Manganese