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Filter Aid And Its Role In Purification Of Filtration

- Mar 05, 2018-

Filter aid and its role in purification of filtration

Able to change the filter material particle distribution and filtration characteristics, thereby improving the filtration effect of the auxiliary powder called filter aid. Filter aid is a loose, porous, adsorption capacity, with small particles, a narrow range of particle size distribution, the particles are more rigid, dispersible, suspension, chemical stability and the formation of filter cake porosity are good, low prices, Source of rich material. It has to filter out small particles, to prevent clogging filter media, filter equipment to extend the operation time, to obtain the role of completely clear filtrate.

The sediment deslagging and ferrous sulfate filtered titanium solution, there are still very fine colloidal solid phase impurities. If the general method of plate and frame filter, the initial filter easy to filter, the resulting filtrate clarity is still poor, and as the filter continues, these colloidal solid phase impurities will gradually accumulate in the filter hole, leading to filter Clogging layer, so difficult to continue to pass the titanium solution, greatly reduced filtration rate. In order to overcome the above difficulties, the filter aid can be dosed into a frame press before the filter press, so that the filter cloth is first adhered to a layer of a filter aid, and then the titanium liquid is added to the frame Pressure filtration, so that you can prevent colloidal solid impurities clogging the filter, so that the pressure filtration process goes on smoothly.


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