The production technological parameters is depend on the raw material,fuel,capacity condition etc. Here list a typical glazed clay roofing tile production technological parameters from a clay roofing tile plant in Shangdong,China.
I Raw material preparation:
1. Jaw crusher: feed granularity <150mm, give granularity <20mm.
2. Roller crusher: The first time crushing clearance 1.8-2mm
The second time crushing clearance 0.8-1mm
II Drying
Max.Temperature 60~75℃
Drying period>=40 hours
III Firing:
1. Max.Temperature:1025℃
2. Car-in speed: 20.2min/car
3. Firing period: 19.6 hours
4. Water absorption rate: 3.5-4%
IV Glazed production technology
1. Add water 800kg, grinding 10 hours, and granularity pass 325 mesh
2. Glaze viscometer: 730
3. Glaze water absorption rate: 35-40%
4. Glaze proportion: 1.64-1.66