Reinforced ceramic sleeve lined elbow

Description

The backpack wear-resistant ceramic sleeve lined elbow is also called the reinforced ceramic sleeve lined elbow. The ceramic sleeve lined backpack ceramic elbow is based on the wear-resistant ceramic elbow, and a layer of anti-wear backpack is added. The special ceramic is pasted on the inner wall of the pipe with a high temperature resistant inorganic adhesive, and after heating and curing, it forms a strong anti-wear. Therefore, the wear-resistant ceramic backpack elbow realizes double-layer wear resistance, which is suitable for working conditions with serious wear.

The high alumina ceramics are installed onto the internal surface of the pipe properly by welding, pasting or inter-locking system. With the brilliant properties of resistance to wear, corrosion and heat, the pipe is widely used in materials handing of coal industry, electric power, metallurgy, mining and chemical industry and it is one ideal wear resistant pipe.

The most common applications of ceramic sleeve lined pipes

Industry	Material
1. Abrasive products	Grinding wheel granules
2. Aluminium plants	Calcined alumina, bauxite, electrode, carbon, crushed bath
3. Iron & Steel	Sinter dust, limestone, lime injection, coal, iron carbide, alloy additives
4. Mineral wool & insulation products	Perlite, stone dust, refractory fibers, production wastes, dust from sawing operations
5. Foundries	Molding sand, dust collection
6. Glass plants	Batch, cullet, quartz, kaoline, feldspar
7. Breweries, grain processing, feed mills	Corn, barley, soy beans, malt, cocoa beans, sunflower seeds, rice hulls, malting plants
8. Cement	Clinker dust, limestone, cement, fly ash, coal, blast furnace slag
9. Chemical plants	Caustic lime, fertilizers, lime dust, chrome ore, paint pigments, plastic pallets with glass fi bers
10. Mineral mining plants	Kiln feed, ore concentrate, coal tailings, dust
11. Coal fired power stations	Coal, fly ash, pyrites, slag, ash, limestone
12. Coal mines	Coal dust, mine waste for backfi lling
13. Technical carbon products	Technical carbon, dust, graphite for electrodes

Wear resistant alumina ceramic sleeve welded in steel pipes

These ceramic sleeves are identical to the ones we use in our production, so high quality, consistency, and uniformity are assured.

Alumina ceramic specifications

Items	92%	95%
Al2O3	≥92%	≥95%
SiO2	0.0451	0.028
Fe2O3	0.0001	0.0001
TiO2	0.0005	/
CaO	0.018	0.0045
MgO	0.011	0.0051
K2O	0.0004	0.0003
Na2O	0.0031	0.0063
Volume Density	3.62 g/cm3	3.65 g/cm3
Water Absorption (%)	≤0.02%	≤0.02%
POROSITY	≤1	≤1
Hardness	9 Mohs	9 Mohs
Flexural strength	≥2000 Mpa	≥2250 Mpa
Abrasion	≤0.02	≤0.02

The combination of high rigidity of ceramic and high elasticity of steel gives the pipe unmatchable features as an abrasion resistant, heat resistant and corrosion resistant material for use in the fields of power generation, metallurgy, mining, and chemical industry etc. It has many advantages over steel pipes, cast stone pipes, and steel-plastic compound pipes.

Layer size of ceramic sleeve lined pipe

Item	Material	Thickness	Diameter
Steel pipe	normal carbon steel or stainless steel	3-10mm	DN30-DN400mm
Adhesive	Epoxy adhesive	2-3mm
Ceramic sleeve	92%,95%,99%	5-20mm	DN30-DN400mm

The ceramic sleeve lined pipe has a smooth inner wall, excellent tightness as well as good wear and chemical resistance ability.

Benefits

• The coal will bring great impact to the equipment during transportation in the coal handing system of power station, so the alumina ceramic tiles s not available and they will fall of by large area.
• The valve in the desulfurization system can change the follow during the switching process, sot he slurry with grain at high speed will wear out the pipe at the ends of valves. The liquid in the tube contains much sulfite which is very corrosive, so usually nonmetallic pipes like rubber tubes and PVC pipes are used to avoid corrosion, but the wear resistance of these tubes are poor that the straight pipe at the ends of valves always worn out. The alumina ceramic lined tube/elbow is one piece, the slurry couldn’t permeate through it, moreover, the alumina tube/elbow has high hardness and the process by isostatic pressing dry power is favorable to the uniformity of ceramic crystal structure, so its wear resistance is better than ceramic tiles with the same materials.
• The weakest place is the gap between each sticked tiles during material handing. The material grains not only wear the pipe but also have impact on it. This is why the pipelines lined by tiles are easily worn out and fallen off.
• The experiment shows that the service life of ceramic tube/elbow is at least 5 times longer than ceramic tiles of the same thickness.