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About CEMEX
  • Company Profile
  • Our Approach
  • CEMEX Values
  • Ethics and Compliance
  • Our History
  • CEMEX Projects
  • Global Projects
  • Suppliers
CEMEX Go
Products & Services
  • Ready Mix Concrete
  • Cementitious
  • Building Solutions
  • Paving Solutions
Contact
  • Contact Us
  • Customer Feedback
Sustainability
  • Sustainable Construction
  • Health and Safety
  • Conservation Book
Media
  • Press Releases
  • News & Events
  • Promotions
  • Documents and Dowloads
Careers
  • Current Vacancies
  • Job Application
  • Submit a CV
  • Introduction to CEMEX
  • What We Do
  • Career Progression
  • Employee Development
  • Our People
  • What to expect from us?
  • What do we expect of you?
  • Application Tips
  • Diversity
How Cement is Made
  • CEMEX UAE
  • Products & Services
  • Cementitious
  • Cement
  • How Cement Is Made
View the interactive animation of the cement production process to learn how cement is made by CEMEX.

 

1. Mining the raw material
 

Limestone and clay are blasted from rock quarries by boring the rock and setting off explosives with a negligible impact of the environment, due to the modern technology employed.

2. Transporting the raw material
 

Once the huge rocks have been fragmented, they are transported to the plant in dump trucks or by conveyor belt.

3. Crushing
 

The quarry stone is delivered through chutes to the crushers, where it is reduced by crushing or pounding to chunks approximately 1 ½ inches in size.

4. Prehomogenization
 

Prehomogenization is the proportional mix of the different types of clay, limestones, or any other required material.

5. Raw material storage
 

Each of the raw materials is transported separately to silos, where it later will be added in specific amounts according to the particular type of cement being produced.

6. Raw material mill
 

This takes places in vertical steel mill, which grinds the material through the pressure exerted by three conical rollers. Which roll over a turning milling table. Horizontal mills, inside which the material is pulverized by means of steel balls, are also used in this phase.

7. Raw meal homogenization
 

This process takes place in silos equipped for obtaining a homogenous mix of the material.

8. Calcination
 

Calcination is the core portion of the process, in which huge rotary kilns come into play. Inside, at 1400 degrees C, the raw material is transformed into clinker: small, dark gray nodules 3-4 centimeters in diameter.

9. Cement milling
 

The clinker is ground by different-size steel balls while it works its way through the mill’s two chambers, with gypsum being added to extend cement setting times.

10. Cement packaging and shipping
 

The cement is then housed in storage silos, from where it is hydraulically or mechanically extracted and transported to facilities where it will be packaged in sacks or supplied in bulk. In either case, it can be shipped by rail car, freighter truck or ship.

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