The production process for cement consists of drying, grinding and mixing limestone and additives like bauxite and iron ore into a powder known as “raw meal”. The raw meal is then heated and burned in a pre-heater and kiln and then cooled in an air cooling system to form a semi-finished product, known as a clinker. Clinker (95%) is cooled by air and subsequently ground with gypsum (5%) to form Ordinary Portland Cement (OPC). Other forms of cement require increased blending with other raw materials. Blending of clinker with other materials helps impart key characteristics to cement, which eventually govern its end use.

Cement is a substance which brings hardness and binds the other material too. The word cement is derived from a roman word that describes modern concrete and is made up of crushed rock and burnt lime as binder. The main component of concrete that is cement is economical high-quality construction material used in construction projects worldwide. The product is made by heating the mixture of clay and lime stone at a temperature of 1450 C.

The production of concrete is 5 billion cubic yards per year which means 1.25 tons of cement. The invention of the product was done by ancient Greeks and roman when they mixed volcanic ash with slaked lime. There are different process through which cement is produced Wet process, Dry process (through which 74% of the cement is produced) and preheated process. Wet process is better for moist material and easiest to control whereas dry process kilns requires less fuel. These kilns are at high temperature, and are at natural alkaline environment. A cement kilns are excellent for the environment as it recycle the waste products.

All SS Trade Solutions plants are dry process plants. Limestone is crushed to a uniform and usable size, blended with certain additives (such as iron ore and bauxite) and discharged to a vertical roller mill/Ball Mill, where the raw materials are ground to fine powder. An electrostatic precipitator dedusts the raw mill gases and collects the raw meal for a series of further stages of blending. The homogenized raw meal thus extracted is pumped to the top of a preheater by mechanical transport /FK pumps. In the preheaters the material is heated to 750C. Subsequently, the raw meal undergoes a process of calcination in a precalcinator (in which the carbonates present are reduced to oxides) and is then fed to the kiln. The remaining calcination and clinkerization reactions are completed in the kiln where the temperature is raised to between 1,450C and 1,500C. The clinker formed is cooled and conveyed to the clinker silo from where it is extracted and transported to the cement mills for producing cement. For producing OPC, clinker and gypsum are used and for producing Portland [Pozzolana] Cement (PPC), clinker, gypsum and fly ash are used.

The basic purpose of creating the material like cement is to provide strong support for the buildings and a long lasting construction. The roof most important part of the house or building. The vital part which provides protection and shelter. But with the purpose of providing the support it has to face the brunt of air pollution and other environmental hazards. So nowadays there are various other products mixed with cement and construction material