Electromagnetic separation is used in the concentration of : (a) Copper pyrite (b) Bauxite (c) Cassi — Metallurgy and Isolation of Elements Chemistry Question

💡 Solution & Explanation

Step 1: Electromagnetic separation is suitable for ores where either the value mineral or the associated impurities have magnetic properties. Step 2: Cassiterite (SnO2) is a non-magnetic tin ore, but it frequently occurs alongside highly magnetic wolframite (FeWO4 and MnWO4) as an impurity. Step 3: Passing the crushed ore over magnetic rollers separates the magnetic wolframite from the cassiterite, thereby concentrating the tin ore (option c).