In the line of emery stones, you can find this circular flour mill round emery stone. As the very name implies, it is used in flour mills for the purpose of grinding the cereal grains into flour. The stone is installed in an emery stone mill, which can be used for grinding wheat, barley, peas, coffee, and spices. Such mill can also be used for splitting lentils. This stone is made by blending magnesium chloride and magnesium oxide slurry, adding that into a mould and let it set in it. The resultant solidcircular flour mill round emery stone is hard and durable.