What is the major source of raw material for the cement industry?
The most important raw materials for making cement are limestone, clay, and marl. These are extracted from quarries by blasting or by ripping using heavy machinery.
Where do the raw materials for cement come from?
But cement isn’t some sort of naturally occurring organic material – it’s manufactured through the chemical combination of 8 main ingredients during the cement production process. These ingredients are generally extracted from limestone, clay, marl, shale, chalk, sand, bauxite, and iron ore.
What are alternative raw materials?
The term, ‘Alternative raw materials’ is generally used to refer to materials which are the byproducts or wastes of another industry but in fact the same rules apply in economic and chemical terms if a natural alternative to a material initially selected for a particular plant is considered as a replacement.
What are the three main raw materials used in the manufacturing of cement?
The most important raw materials for making cement are limestone, clay and marl. These are extracted from quarries by blasting or by ripping using heavy machinery.
Which rock is used for cement production?
Limestone comprises 95% of core raw material for cement production. No wonder then that the cement sector governs demand, supply and pricing of limestone (as well as coal) to some extent.
What are the raw materials of concrete?
Concrete is a hardened building material created by combining a chemically inert mineral aggregate (usually sand, gravel, or crushed stone), a binder (natural or synthetic cement), chemical additives, and water.
What is alternative fuel and raw material?
However, in most cases, alternative fuels are made up of mixtures of different waste materials, and it is difficult to determine their energy value or composition. Specifically, materials like municipal wastes, oils, plastics, wood, tyres, or sludges are often proposed as alternative fuels for the cement industry.
How is clinker produced?
Cement clinker is a solid material produced in the manufacture of Portland cement as an intermediary product. It is produced by sintering (fusing together without melting to the point of liquefaction) limestone and aluminosilicate materials such as clay during the cement kiln stage.