Applications

The Aspire High Density Cleaner (HDC) reliably removes contaminants suspended in pulp up to 5% consistencies, which are heavier than fibers in the pulp. As a result, the stock will be cleaned and downstream machines like screens, refiners, deflakers etc. will be protected.

Working Principle

An inlet head designed for high turbulence breaks up existing flocks and prevents the formation of new flocks. Centrifugal forces created by the pulp rotation inside the cleaner facilitate the separation of contaminants with minimal fiber loss. In order to ensure a long service life, the HDC is made of stainless steel. The heavy reject trap is also designed and automatically controlled in order to minimize fiber loss. It also has sight glass to see the process during operation. A continuous reject flow can be achieved if it is installed as a first stage cleaner in a two-stage system. It is equipped with a contaminate trap that can be set to discharge rejects automatically and thoroughly flush the chamber with clean water when used as a single stage or second stage cleaner. A double stage water dilution in the reject chamber facilitates better separation of heavy density particles with minimal fiber loss.