Perlite in the natural state is a dense, glassy rock formed by volcanic action. When crushed and treated under proper conditions, it pops like popcorn, expanding to 20 or more times its original volume. A special milling and classification process gives Dicalite® perlite filter aids the structure and correct particle size range distribution needed for optimum performance.
Perlite is an amorphous mineral consisting of fused sodium potassium aluminium silicate.
Dicalite® perlite filter aids are processed at temperatures exceeding 800 °C (1500 °F) which eliminates organic matter. They have extremely low solubility’s in mineral and organic acids at both low and high temperatures.
Solubility’s in strong alkalis will vary according to temperature and time of contact.
Dicalite® perlite filter aids do not impart taste or odour to liquids being filtered.
A major advantage of
Dicalite® perlite filter aids is that most weigh less per unit volume than standard diatomite filter aids. Pound for pound, this gives up to 20% greater filtering capacity resulting in comparable savings in filter aid usage, especially on rotary vacuum pre-coat filters.
Chemical Analysis Perlite
Major Elements Typical Range in %
SiO2 72 %
Al2O2 14 %
Fe2O3 0.7 %
Na2O 4 %
K2O 8.8 %
CaO 0.3 %
MgO 0.1 %
TiO 0.1 %
Please do not hesitate to contact us should you have any inquiry,
Pham Dinh Khang, Ken
Sales Representative
Seaward Chemicals Pte Ltd
65 Upper Paya Lebar Road
#06-01 Guang Ming Industrial Building
Singapore 534817
TEL: 65 63826660 FAX: 65 63828011
M: (65) 8281 9675
E:
ken@seawardchemicals.com
W:
www.seawardchemicals.com