The wear of the heavy medium cyclone is concentrated in the feed volute, column section, cone section, and bottom flow port (sand settling port), which are the components with the highest losses in the coal preparation plant; The mainstream use is 92% and 95% alumina ceramics, with arc-shaped fan-shaped ceramic blocks assembled for lining. Zibo, Shandong is the main production area in China.
Fan shaped arc-shaped ceramic block pasting (most commonly used on site)
Mold according to the curvature of the cyclone cylinder and cone, staggered layout, and no direct passage through gaps is allowed; Using inorganic high-temperature wear-resistant adhesive for bonding.
Advantages: Moderate cost; Partial wear can be replaced individually, without the need for overall replacement; The shell of the old cyclone can be retrofitted with porcelain on site.
Disadvantages: Afraid of large pieces of iron impact, which can easily cause porcelain to break and pieces to fall off; Iron tools are strictly prohibited from entering the cyclone.
Three in one composite lining plate (ceramic+rubber+steel plate)
Ceramic vulcanized composite rubber steel plate, fixed with bolts, has better impact resistance than pure ceramic paste, high cost, and is mostly used in large impact snail shell parts.
Integrated ceramic sleeve
Small caliber cyclones can use integrated ceramic tubes; The large-diameter heavy medium cyclone (1000/1300/1500) is almost impossible to make a complete set and can only be pieced together.
Thickness zoning design (critical)
Feeding snail shell, lower section of cone, bottom outlet: 18-20mm thick 95 ceramic (with the most severe wear)
Upper section of cylindrical body: 12-15mm thick 92/95 porcelain, reducing costs.
Ceramic blocks must be sewn incorrectly, and direct through seams are prohibited; Gap ≤ 0.3mm, filled with special ceramic adhesive to prevent the entire piece from falling off due to slurry drilling.
Adhesive: Inorganic adhesive is preferred under heavy medium conditions, while ordinary epoxy adhesive is prone to delamination due to long-term slurry erosion.
Acceptance: Tap each ceramic piece with a clear and crisp sound; Dull represents internal cracks and is prohibited from going online.
Maintenance: Regular inspections should be carried out, and if a single piece of porcelain breaks, it should be replaced in a timely manner. If the slurry penetrates between the steel shell and the ceramic, it will fall off in a large area.
https://www.chenyiceramic.com/ceramic-lined-cyclone/silicon-carbide-lined-cyclone.html
https://www.chenyiceramic.com/alumina-ceramic/ceramic-tile/92-95-alumina-ceramic-tube-tile.html