· Cement making process ... Cement Manufacturing Process. Cement Manufacturing Process. Cement Manufacturing Process. CaO SiO 2 Al 2 O 3 Fe 2 O 3 MgO Loss Limestone (chalk) Highsilica limestone Cement rock Blastfurnace slag Shale Sand .
The following figures illustrate the precast concrete process: 1. Production of reinforced cages and main connections: The precast factory often has specialist workshops for the manufacture and maintenance of moulds, and for the production of jigbuilt reinforcing cages and connections. 2. Assembly of moulds: The reinforced cage is positioned in the partly assembled mould, then the .