Method for removing solid matter from a fibrous material suspension by means of flotation
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United States of America Patent
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Jan 6, 2015
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Apr 23, 2012
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Oct 23, 2009
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Abstract
The invention relates to a method for removing solid matter, in particular impurities, by means of flotation from a fibrous material suspension (S), wherein the fibrous material suspension (S) is mixed with gas (L), and wherein in at least two flotation chambers (1, 2, 2′, 2″, 2′″, 2″″) flotation foam (3, 4) is formed that collects solid matter and removes it from the flotation chamber. The flotation foam (4) of at least one flotation chamber (1, 2, 2′, 2″, 2′″, 2″″) is at least partially conducted into at least one other flotation chamber (1), in particular in the flotation foam (3) formed therein. According to the method, the complexity can be reduced, even with high requirements regarding effect and yield.
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