Presentation on theme: "Ceramite The Wear Resistant Material"— Presentation transcript:
1 Ceramite The Wear Resistant Material Coal Fired Power GenerationApplications
2 INTRODUCTION TO CERAMITE Elkem Fiskaa, todayElkem Fiskaa, 1969Ceramite® is a technology developed by Elkem Materials during research and devlopment of Elkem Microsilica®20 years of lab testing and coordinated industrial trialsToday: Significant applications in several industries; primarily aluminium, cement and ferrous metals
3 Ceramite® Microsilicia® & Cement The Key to High Strength Bond Phase Microsilica - amorphous SiO2 fume, (D= micron)Improves particle packing efficiency in castable - fills in voids between larger aggregates.Less water needed for casting.Dense castables with low porosityExtreme Wear ResistanceImpervious to Gas and Chemicals
4 *A 7.1 cm cube sample is pressed with a 300 N force against a grinding wheel that is coated with a fine grade corundum sand. The sample is rotated 22 times (1 campaign) after which it is cleaned and weighed. The grinding machine is cleaned after each campaign and new media is distributed on the grinding wheel. The test requires 18 campaigns.The Bohme Test results are expressed as the volume of material lost from the specimen in cm3 from the surface area exposed to wear.
5 Ceramite in Power Applications Pulverizer RepairCoal Chute RepairBurner Vortex RepairOff Take BoilerCoal Chute LiningFan HousingCyclonesBaghouse Systems
13 Customer uses Nitrite Bonded SiC tiles The ProblemCustomer uses Nitrite Bonded SiC tilesTiles routinely crack and must be repaired every six monthsCeramite Trowelable has been used as repair material for past 18 monthsBased on Ceramite performance, customer decided to trial complete vortex burner