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A brief history of Portland Cement

If you’ve never heard of Portland cement, you may be surprised to learn that it is one of the most important ingredients ever produced by man, created and patented by Joseph Aspdin in 1824.

Aspdin heated lime cement powder mixed with clay in a furnace, and then ground the clinker that was left into a powder. He named the substance “Portland cement” because of similarities it had with Portland rock, a kind of rock excavated on the Isle of Portland in England.

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Aspdin’s cement business continues today with Aspdin’s son William at the helm. To this day, Portland cement remains the most commonly used cement throughout the world. For your cement needs, consider Ready Mix Concrete Derby at a site like Best Mix, suppliers of Ready Mix Concrete Derby.

Cement is usually produced by two processes – wet and dry

The dry process is basically the same as the wet, except that in the wet, water is mixed in with the raw materials before being placed into the kiln. Although there is little difference in efficiency between the two processes, the wet process has the disadvantage of CO2 emissions and fuel consumption to evaporate the water. Most of the manufacturing processes where cement is produced is done using the preferred dry process.

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Crushing and Grinding: The raw materials such as limestone and clay, which are obtained from the mine are then crushed into fine powder form.

Raw materials are crushed and mixed in the right proportions to form what is called “raw food” or “kiln feed”. Next, the clinker is formed – a new substance emerged that comes from the kiln known as ‘clinker’.

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