Production of brake padsZeolites are used in the production of brake pads as friction modifiers. Zeolites adsorb moisture from the brake pad surface, consequently reducing the noise from the friction between the brake pad and the disc.
Water treatmentAs ion exchangers, zeolites are used to remove organic compounds, heavy metal and radioactive substances from water or contaminated soil.
ConstructionConstruction is another important application field of zeolites. Zeolites are mostly used in the production of various types of concrete. Zeolites are used as a foaming agent in asphalt production, where they reduce the required production temperature and reduce gas emissions.
AgricultureZeolites are used in agriculture in the production of fertilisers as a flowability-enhancing agent and for slow and uniform release of active ingredients in the soil. They prevent the washing out of nutrients from the soil and regulate soil humidity.
Adsorbents and molecular sievesPowdered zeolites are used in the preparation of granule- or pellet-shaped adsorbents, in the production of zeolite-coated pharmaceutical and food packaging and in the production of polymer adsorbents.
Other application fieldsZeolites are used: • as fillers in the manufacturing of paints, coatings and paper, • as odour removal agents in households (e.g. pet litter additive), • as catalysts in acid-catalysed reactions (cracking, isomerisation, alkylation).
|Type of Product||ZP-4A||ZP-4A-TSR||ZP-4A-LD||ZP-4A-HD||ZP-4AM|
|Na2O||%||17 - 19|
|Al2O3||%||28 - 30|
|SiO2||%||31 - 34|
|H2O||%||18 - 22|
|Na2SO4||%||0||1.5 - 2.5|
|Anhydrous solids content (1h/800˚C)||%||78 – 82||79 - 85|
|Reflectance (R 460)||%||min. 94|
|Bulk density||g/l||280 – 380||-||-||450 - 550|
|Tapped density||g/l||-||-||max. 500||min. 630||-|
|pH (5% Slurry)||11 – 12||10 – 12|
|Calcium ion exchange capacity||mg CaO / g anhydrous||min. 160|
|Static water adsorption *||%||-||-||-||min. 25||-|
|Water adsorption capacity (WAC)**||%||-||-||min. 24||-||-|
|Tenzide absorption||g/100g||-||-||-||-||45 - 55|
|Particle size distribution:|
|> 10 microns||%||max. 10||-|
|< 1 micron||%||max. 10||-|
|Average particle size d50||µm||3 – 5||-|
|Wet sieve residue (on 45 µm)||%||0.2||0.0||0.2||-|
|Characteristics||Fine white powder with no visible impurities|
*(25˚C, RH=55%, 24h)-climate chamber
**(23˚C +/-2˚C, RH=55%, 24h)-desiccator