Overview (nhìn sơ đồ chữ và mô tả khái quát quy trình)
|1. limestone, clay -> crusher -> powder
2. power -> mixer -> ...
3. ... -> rotating heater -> ...
4. ... -> grinder -> cement
5. cement -> be packaged -> bags
Overall, it is clear that there are five stages in the production of cement, beginning with the input of limestone and clay and ending with packaging the products in bags.
|1. cement, water, sand, gravel -> % prepare -> ...
2. ... -> concrete mixer -> concrete
To produce concrete, four different materials are mixed together.