High density cleaners (sometimes referred to as Coarse Cleaners) are normally vertical in design. The stock enters the cleaner tangentially in the head piece. This causes the stock to rotate in the cleaner at high speed. This rotational action causes the parts in the suspension that are denser to be pushed out to the walls of the cleaner. These contaminants will work their way down the walls of the cleaner where they are rejected by a junk trap valve arrangement. Coarse cleaners are generally found after the pulping system and are mostly run at higher consistencies (around 3%) depending on the following equipment. The efficiency of a coarse cleaner at removing small contaminants is compromised because of the higher consistency and larger diameters. Coarse cleaners often have wearing sections made of ceramic to increase the lifetime as they are subject to heavy wear. Often the reject valves need to be of a special design to handle the wear rates involved.

PURPOSE

This HD cleaner will clean up and remove such impurities as metal, sandy particles, etc., the density of which is greater than that of the pulp fiber, so as to obtain a high quality of paper pulp and to ensure the smooth processing of other subsequent operations.

CHARACTERISITICS & FEATURES

This cleaner is characteristic for the following economical features:

1. This cleaner which is featured for its high degree of concentration ranging within the scope of 2-3.5%.
2. Impurities can be continuously removed by only having the pump to-gather with an equivalent volume of clean water.
3. It is made of stainless steel featuring for its durability against acid and loss, as well as for its long life.
4. The stuff and thinner water balancing section is made of glass and its interior is visible.
5. Converting for a new use. It is capable of processing impurities up to as high as 5-6% of high degree of concentration, as well as capable of handling the micro particles contained in 2-2.5% of degree of concentration.