What chemical equations are used in the production of steel and the removal of impuritys?

Question

Paticualy the removal of silicates using calcium carbonate

Answer 1

Steel is an alloy, meaning a mixture of 2 solids. It is not a compound.

In the case of simple carbon steel, iron is "reacted" with carbon. The carbon atoms are encased in a matrix of iron atoms, like a bird in a cage. In more complex steel alloys, e.g. stainless steel, nickel, chromium and other elements are added into the matrix to achieve different properties.

Impurities are removed by heating them out of the system