Question

which non metal are used in the steel industries to remove impurities​

Answer 1

Answer:

In steelmaking, impurities such as nitrogen, silicon, phosphorus, sulfur and excess carbon (most important impurity) are removed from the sourced iron, and alloying elements such as manganese, nickel, chromium, carbon and vanadium are added to produce different grades of steel

Answer 2

Answer:

Calcium oxide also plays an important part in the Basic Oxygen Steelmaking furnace. Here it helps to remove impurities such as phosphorus and sulphur from the steel. Phosphorus is a non-metal and produces an acidic oxide, P2O5.