Castables for CFB Boiler
Wear-resistant castables
The wear resistant castables, prepared using fused corundum and special bauxite as starting materials, is featured with easy construction, good wear resistance, unease spalling, high strength at medium and high temperature.
For dense phase area and transition area of combustion chamber, bottom elbow of water-cooling wall, exit turning chamber of cyclone cartridge, tail vertical shaft and boiler roof.
Steel fiber reinforced wear-resistant castables
This material, based on optimizing wear resistance castables, is added into steel fibers to enhance the wear resistance, strength and thermal shock resistance of castables further. This castables is used at the cutting direction entrance of cyclone separator and ‘target area’ on cartridge of circulating fluidized bed boiler.
For straight part and cone-shaped part of separator, entry and exit, refeeder and dipleg, etc.
Wear-resistant plastic refractories
Compared with the traditional refractories plastic materials, the wear resistant plastic refractories is featured with good plastic ability, long shelf life, high strength and good wear resistance. By adopting composite binder, its intensity enhances as the increasing temperature. The wear-resistant plastic refractories, using fused corundum, mullite and special bauxite as main starting materials, isusitable to repair CFB and construct the wear resistant linings. For wear resistant parts, such as dense phase area, etc.
Thermal shock resistant castables
Circulating fluidized bed (CFB) requires refractories with good thermal shock resistance and high refractoriness since most CFBs are ignited under bed and the temperature rises and drops rapidly, especially in the areas such as wind room, lighter, water cooling wind room, etc. Therefore, the thermal shock resistance castables is the best choice.
Fireclay castables
The fireclay castables, prepared using clay clinker ad aluminate cement as main starting materials, is featured with high refractoriness and good thermal shock resistance.
For ignition duct, coal economizer beam.
High alumina cement vermiculite insulating castables
The insulting castables, prepared using vermiculite and aluminate cement as main starting materials, is featured with good insulating property and high refractoriness.
For wall and channel of the coal economizer.