Question

While extracting iron from its ore, out of slag and molten iron, which one floats at the surface?

Answer 1

During smelting, while the ore is uncovered to excessive temperatures, those impurities are separated from the molten metallic and may be eliminated. Slag is the gathering of compounds that might be eliminated.

Complete Answer:
Slag is lighter than molten ore so it's going to floats on the surface. Slag is often an aggregate of metallic oxides and silicon dioxide. However, slags can include metallic sulfides and elemental metals. Slags are used to cast off the waste in metallic smelting, consisting of helping withinside the temperature manages of the smelting, and minimizing any re-oxidation of the very last liquid metallic product earlier than the molten metallic is eliminated from the furnace and used to make strong metallic. In a few smelting processes, consisting of ilmenite smelting to provide titanium dioxide, the slag is the treasured product in place of the metallic. In nature, iron, copper, lead, nickel, and different metals are located in impure states referred to as ores, frequently oxidized and jumbled together with silicates of different metals. During smelting, while the ore is uncovered to excessive temperatures, those impurities are separated from the molten metallic and may be eliminated. Slag is the gathering of compounds that might be eliminated. In many smelting processes, oxides are added to govern the slag chemistry, helping withinside the elimination of impurities and defensive the furnace refractory lining from immoderate wear. In this case, the slag is called synthetic.

Note:
A precise instance is steelmaking slag: quicklime ($CaO$) and magnesite ($MgCO3$) are added for neutralizing the alumina, refractory protection, and silica separated from the metallic, and help withinside the elimination of sulfur and phosphorus from the steel.