Plaster für Ram Prozess

PFR is a formulated hemihydrate plaster (CaSO4.1/2H20) produced from naturally occurring gypsum mineral. It is white in colour. This product is used in the ceramic industry to produce high performance moulds for the RAM Press Process, where consistent mould life and porosity are important.Typical Physical PropertiesVicat ring spread@ pwr, by weight,of 2.5:1, 100/4020 to 25 cmKnife setting time@ pwr of 2.5:1:19 to24 minsData at pwr of2.5:1Compressive strength, dry :37.5 MN/m2Flexural strength, dry:13.6 MN/m2Brinell hardness, dry :124 MN/m2Pore volume:26.0% Typical Particle Size Data Sieve% weight retained+ 109 micronsmax. 0.04 %+58 micronsmax.3.0%