Bed material specifications for cfbc boiler Chemical properties Less than 1% Physical properties Bulk density 1500 - 1800 kg/m³ Initial deformation temperature > 1300° c Particle size distribution Less than 1mm 100% Less than 180 to 200 micrometer 80% Less than 150 to 170 micrometer 50% Less than 63 micrometer 3% Note : other sizes also available on request 40-50 kg plastic waterproof bags