New tertiary crushing unit
Apeco Group OÜ has successfully completed the project Kunda Nordic Tsement AS for the construction of the tertiary crushing unit. As part of the project, the previous GP-type cone crusher was replaced by a new Metso Outotec HP3-type cone crusher. It is the first crusher of this type in the entire Baltic region. The new production unit started working at the end of September this year.
Apeco’s work as the main contractor covered the entire process, from the design of the complete technical solution to the successful commissioning of the equipment. During the project, the foundation of the equipment was built out, and a new screen chamber with a special valve system, a loading conveyor, a silo with a dosing unit, and a collection conveyor to the existing line was procured and installed. Avesco AS, which is the official representative of Metso Outotec in Estonia, helped in procuring the crusher.
The productivity of the new crushing unit is higher than before, the quality of the construction aggregate (grain size up to 16 mm) is better, and the working process of the entire unit is more flexible. As the Metso Outotec HP cone crusher is evenly filled thanks to the 50 m3 silo, the quality of the grain composition of the crushed aggregate is also significantly improved. The distribution chamber exiting the screen was also rebuilt, which makes the entire production process even more flexible; for example, it is now possible to switch off the tertiary unit if necessary. This is useful if the aggregate needed for cement raw material is produced in which the physical and mechanical properties are not important, but the quality is primarily determined by the chemical composition of the aggregate. Such flexibility also provides significant savings at the expense of electricity. It is also now possible, to smoothly choose which material to produce at any given time: either aggregate or cement.
The new tertiary crushing unit is part of Kunda Nordic Tsement AS’s resource efficiency project, the implementation of which is supported by the Environmental Investment Center.