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Schematic of cement production process

The whole cement manufacturing process
The whole cement manufacturing process
This is a schematic presentation of the whole cement manufacturing process.

  • Raw materials such as limestone, shale and marl are collected at the quarry and transported to the crusher where they are crushed.
  • From here it is conveyed to the mixing bed where it is mixed to a homogeneous material by means of stack and rake.
  • Additives such as high grade limestone, sand and iron ore are added and then conveyed to the raw mill where it is dried and ground to a fine powder.
  • The raw meal is transferred to the pre-heater were the material is pre-heated. RDF, coal and woodchips are used to heat the preheater after which it enters the rotary kiln where it is burned to produce clinker.
  • The clinker is cooled down with air in a grate cooler and then stored in the clinker silo.
  • Additives such as gypsum and limestone are added to the clinker before being milled in the cement mills to the final cement product.
  • The cement powder is stored in the cement silos. From here the final stage is the bagging or bulk dispatch of the cement.
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Ohorongo (Pty) Ltd. is one of the first of Namibia's cement manufacturers and owns one of the most modern cement plants in Africa. It was constructed over the course of two years by leading international engine...

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Tel: +264 67 235 7000



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