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Cement clinker is a solid material produced in the manufacture of portland cement as an intermediary product. Clinker occurs as lumps or nodules, usually 3 millimetres (0.12 in) to 25 millimetres (0.98 in) in diameter.
Clinker production is the most energy-intensive stage in cement production, accounting for more than 90% of total industry energy use and virtually all the fuel use. The main kiln type used throughout the world is the large-capacity rotary kiln.
Key strategies to cut carbon emissions in cement production include improving energy efficiency, switching to lower-carbon fuels, promoting material efficiency (to reduce the clinker-to-cement ratio and total demand), and advancing innovative near zero emission production routes.
Portland cement clinker production is the most energy-intensive stage in cement production, accounting for over 90% of total energy use, and virtually all of the fuel use. Approximately 5% of global carbon emissions originate from the manufacturing of cement.
However, the clinkerization process, which is the basis of cement production, is responsible for an approximate annual global CO2 emission of 2 billion tons. As part of CEMBUREAU’s 5C strategy, the European cement industry aims to achieve carbon neutrality throughout the cement-concrete value chain by 2050.
6 de jun. de 2023 · Clinker is a nodular material that is an essential component in the production of cement. Clinker is composed primarily of calcium silicate and other materials which give it exceptional binding properties that lend strength and durability to cement applications.
Clinker is produced by heating crushed limestone and a mix of other materials (clay and sand) to 1450 °C in a rotary kiln. Clinker is later ground down to a fine powder and mixed with gypsum and other ingredients to make cement.
