Question

________ is the process used to concentrate magnetic ores.

• A. Roasting
• B. Magnetic separation
• C. Leaching
• D. Froath floatation

Answer 1

The correct option is B Magnetic separation

• Magnetic separation method is used for concentrating ores that contain impurites that have magnetic properties.
• Froath floatation process is used to concentrate sulphide ores.
• Leaching is a process used to concentrate ores that can be dissolved in a chemical solvent.
• Roasting is the process of converting a sulphide ore to an oxide ore by heating it in the presence of oxygen at higher temperatures. This is generally done after concentation of the ore.