FILTRATION
REDEFINNING QUALITY

PIALITE EXPANDED PERLITE

PIALITE EXPANDED PERLITE

Pialite ™Filter Aid

FILTRATION is the process of separation of solids from liquids. This process is one of the most widely used operations in industrial processing. The wanted material may be either the liquid or the solids, depending on the finished product.

Filter aid is a filtering medium which is created to assist in making the process of filtration in removing substantially 100% impurities/unwanted solids more efficient and economical. The filter aid will form a porous layer on the septum (cloth, screen, porous stone or metal) and traps the unwanted solids/impurities and prevent them from binding the septum.

Filter aid are mostly used commonly in the process where the clear liquid is the target product to obtain. However, there are cases where filter aid is also used to capture the solid such as pigment filtration. Such case is usually used to extend the filtering cycle and reduce the tendency of clogging in the septum.

PHYSICAL PROPERTIES
Hydroscopic Moisture 0%
Surface pH 6.5-7.5
Color White to off white
Fusion Point (°C) 1260

Characteristic of good filter aid

Form a Very Porous Cake:

Structure of the particles must be such that they will not pack together closely but will form cakes that are 85% to 90% pores. This not only permits high initial liquid flow but also provides pore spaces to trap and contain the filterable solids and leave a high percentage of channels remaining open for flow.

Have Correct Particle Size Distribution:

Because fine particles having higher surface area cut down flow, and coarse particles give poor clarity, the narrowest possible range of particle sizes (within a given grade of a series of filter aids) is best.

Deviate from Uniform Sizing:

Particle size distribution must be “Tailored” to include enough very coarse particles to permit precoating on coarse wire and synthetic screens. The percentage of coarse particles necessary for precoating is small and does not adversely affect flowrate or clarity.

Available in a Number of Grades:

Grade of filter aid must range from fine to coarse to suit various solids removal requirements. Various industries may have different requirement of flow rate and clarity from the filter aid. Flow rate and clarity are determined by how course and fine are the particle of the filter aid. Thus, a good filter aid should have various grades with different level of coarseness and fines.

Table Of Filter Aid
Grade Bulk density (kg/m3) Wet Density Darcy
Slow flow rate Pialite 81c 140 335 0.065
Pialite 81c 140 335 0.13
Pialite 82 125 310 0.13
Pialite 83 120 280 0.44
Medium flow rate Pialite 87 120 230 0.9
Pialite 87SP 120 230 1.05
Pialite 810 120 220 1.35
Fast flow rate Pialite 815 115 210 1.8
Pialite 815c 115 210 2.5
Pialite 816 100 190 3.0
Pialite 816c 100 190 3.0
Pialite 817 90 175 4.0 - 5.0
Pialite 817ct 90 175 4.0 - 5.0
Pialite 818 80 160 5.0 - 7.0
Pialite 818ct 80 160 5.0 - 7.0
Benefit of Pialite Filter Aid :
  • Sterile
  • Inert
  • Non-hazardous
  • No color, taste or order
  • Various packaging options
  • Increased filter cloth/screen backwashing capacity
  • Cost Advantage in comparison to Diatomaceous earth due to its bulky nature
  • Kosher Certified
  • Halal Certified
  • Classified as having GRAS status by FDA
Industry that uses filter aid :

Acid

Beer

Bio Diesel

Jelly

Corn Sweetener & Starch

Drinking Water

Fruit juices & Concentrates

Pharmaceutical

Pigments

Refined oil

Resins

Sugar Refinery

Swimming pool water

Vegetable Oil

Wastewater

Candle

Suitable system :

Filter rotary drum

Filter pressure leaf

Filter press

Filter Candle