Identify the incorrect statement from the following:

Explanation

Option A is correct because closed circuit grinding is indeed more economical than open circuit grinding. Option B is accurate since cod oil, beef tallow, and aluminum stearates serve as grinding aids in cement production. Option C is incorrect because a classifier is used to separate particles based on size, not to remove traces of solids from liquids. Option D correctly states that size enlargement is a mechanical operation, as seen in tablet manufacturing.