In pigment precipitate filtration, the slurry is 10% solids (solids per batch is 700 kgs) having primary particles of 1 micron. Recess filter press is used, but a lot of pigment yield is lost in filtrate -- even after re-circulation of the filtrate many times. Time for filtration is high due to re-circulation. What other type of filtration can we use?
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Ernest Mayer Forum Moderator 52 Posts
Re: What type of filter would prevent pigment loss?30 July 2012 at 1:29pm Last edited: 20 February 2013 at 4:24pm
I would stay with press but use a tighter cloth, use a gentle pump, and a slow pressure ramping profile.