Introduction of Perlite filter aid
Perlite filter aid is a powdered chemical product with a certain particle size obtained by selective expansion of selected small-sized ore sands, heated by purified gas, in a vertical shaft kiln, expansion, and grinding and purification.
Details of Perlite filter aid
The perlite filter aid is white in color, and the bulk density of the product is 230～460kg/m3. The different bulk density, particle size matching, and the pore diameter formed by the expansion of the product variety are the standards.
Compared with filter aids such as silica bath soil, this product has the advantages of less harmful metals and non-metal components, light bulk density, fast filtration speed, and good filtration effect.
Application of Perlite filter aid
This Perlite filter aid has been widely used in the rapid filtration production practice of beer and other beverage industries, pharmaceutical industries, paint and coating industries, and petroleum industries.
Process of Perlite filter aid
Ore---Classification---Drying---Feeding---Calcination/Melting---Cooling---Crushing---Multi-stage Air Separation---Selection---Degranulation---Bagging
Remark
After the perlite is expanded and then passed through the grinding and winnowing, it is carefully and gently ground through many levels to make the surface of the particles uneven. The filter cake forming process can squeeze each other. The final product surface is jagged and they will bite each other. The connection forms a rough filter gap, in which there are many inline channels, which are small enough to block micron-sized particles, but at the same time have a porosity of 80%-90%, and retain a high continuous penetration force.
Perlite filter aid is a white solid powder composed of inert amorphous glass particles. The main ingredients are potassium, sodium, and aluminosilicate. It does not contain organic matter. It is sterilized by high-temperature combustion during the production process, and its bulk density is 20% lighter than diatomaceous earth.
GK-110 perlite filter aid particles are very irregular curved sheets, the formed filter cake has a porosity of 80%-90%, and each particle has many capillary pores, so it can be filtered quickly and can be captured Ultra-fine particles below 1 micron. The special advantage of perlite filter media is that it retains solids while maintaining a high liquid flow rate. It has good chemical stability and no potential contaminants. Its heavy metal ion content is generally 0.005%, so it can be used for food-grade filtration.
Perlite filter aid Parameters
| Item |
Model |
|
K(fast) |
Z(medium) |
M(low) |
| Bulk density(g/cm) |
|
|
|
| Relative flow rate(s/100ml) |
|
30～60 |
60～80 |
| Permeability(Darcy) |
10～2 |
2～0.5 |
0.5～0.1 |
| Suspended matter(%) |
≤15 |
≤4 |
≤1 |
| 102um(150目)Sieve residue(%) |
≤50 |
≤7 |
≤3 |