Bricklayer Joseph Aspdin of Leeds England first made portland cement early in the 19th century by Lime and silica make up about 85 of the mass Two different processes quot dry quot and quot wet quot are used in the manufacture of portland cement

Criteria Dry process Wet Cost of production High Low

manufacturing process of cement Flow Diagram of Dry Method of Manufacturing of Cement

Mar 30 2018 Wet process 1 Mixing of Raw materials in wash mill with 35 to 50 water 2 Materials exiting the mill are called slurry and have flow ability characteristics 3

and storage Gypsum Figure Manufacturing of Cement by Dry Process stored separately Powdered lime stone and wet clay are allowed to flow in channel