Q. Slag forms as a waste product in the production of iron. What is slag?
Solution:
Flux is the material or substance thats is added to molten metals to bond with impurities that can be readily removed whereas slag is the waste material which is removed. Fluxes are used during the refining of metals.
Limestone is commonly used for this purpose in smelting iron ores.
Silica is the impurity present along with iron and it combines with lime stone to form calcium silicate as slag.
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