As part of my initiative to help you enhance your “circle of competence”, I am starting on a new series on analyzing key industries that can offer you profitable, long-term investment opportunities. I start this series by analyzing the Cement industry.
1. About Cement
Wikipedia defines ‘cement’ as…
…a binder, a substance that sets and hardens as the cement dries and also reacts with carbon dioxide in the air dependently, and can bind other materials together. The word “cement” traces to the Romans, who used the term opus caementicium to describe masonry resembling modern concrete that was made from crushed rock with burnt lime as binder. The volcanic ash and pulverized brick additives that were added to the burnt lime to obtain a hydraulic binder were later referred to as cementum, cimentum, cäment, and cement.
At the basic level, cement is a binding substance that is intended for use in building or construction material and can withstand varying environmental conditions. The four elements necessary for its creation are iron, aluminum, silicon, and calcium.
These elements are burned together in a kiln and are finely pulverized to create the powder and used as an ingredient of mortar and concrete we then call cement. This powder hardens once it is mixed with water but water does not break the bond once it is formed.
The manufacturing process of cement consists of mixing, drying, and grinding or limestone, clay, and silica into a composite mass. The mixture is then heated and burnt in a pre-heater and kiln to be cooled in an air-cooling system to form clinker. This is the semi-finished form of cement. This clinker is cooled by air and subsequently ground with gypsum to form cement.