News
- 2011-07-15 11:41:35
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High Alumina Ceramics which are mainly composed of at least 90% Al2O3 are the most widely used oxide ceramic materials in the world today. Borun’s products are made from strictly selected alumina powder with uniform particle sizes. High-quality alumina ceramics can be made by getting blanks through common or isostatic pressing process and then calcining them at high temperature. They are desirable lining materials for high wear equipment due to precise dimensions, high density and stable quality.
Main technical data
Detailed specification
No. Shapes Dimensions (mm) Photos 1 Square-end 65 X 12.7 X 12.7 
2 Rectangular 65 X 12.7 X 12.7
76.2 X 25.4 X 6.4
100 X 100 X 13
100 X 100 X 25
101.6 X 25.4 X 6.4
130 X 12.7 X 12.7
130 X 25 X 12.7
130 X 35 X 25
150 X 100 X 25
150 X 100 X 13
325 X 325 X 25
3 Arch 150 x 75 x 12.7 R200
150 x 50 x 44 x 25 R4
77 x 51 x 10 R100
4 Diamond 20 x 20 x 10
20 x 20 x 6
20 x 20 x 4
24.4 x 21.3 x 12.7
5 Rectangular
with whole130 x 12.7 x 12.7
130 x 25 x 12.7
130 x 35 x 25
150 x 100 x25
6 Cylinder Ø80 x Ø105 x 60
Ø100 x Ø130 x 40
Ø150 x Ø176 x 60
Ø200 x Ø226 x 50
Ø225 x Ø251 x 50
Ø250 x Ø276 x 50
Ø300 x Ø326 x 40
Ø220 x Ø240 x 600
7 Grooved 150 x 50 x 50 x 50 R5
150 x 50 x 45 x 50 R5
150 x 50 x 47.5 x 25 R4
150 x 50 x 50 x 25 R4
150 x 50 x 47.5/50 x 25 R5
150 x 50 x 44 x 25 R4
150 x 29.25 x 23.5 x 25 R4
150 x 29.25 x 26.5 x 25 R4
8 Ball Ø30 - Ø80 
9 Trapezoid 65 X 35 X 32 X 12.7
65 X 50 X 47 X 12.7
130 X 35 X 32 X 12.7
130 X 50 X 44 X 25
130 X 50 X 47 X 12.7
130 X 50 X 47 X 20
130 X 50 x 47 X 25
228.6 x 47.3 x 40 25
Features:
High Hardness 
Rockwell hardness of high alumina ceramics is up to HRA80-90 which is second only to diamond and far exceeds wear-resistant steel and stainless steel.
Excellent wear resistance The wear resistance of high alumina ceramics is 266 times that of manganese steel and 171.5 times that of high chromium cast iron. According to our investigation & follow-up to the clients. the service life of equipment can be prolonged over 10 times under the same working conditions.
Corrosion resistance High alumina ceramics are inorganic oxides with extremely stable molecular structure and no electrochemical corrosion, thus they can resist erosion of acid, alkali, salt solutions and organic solvents.
Thermonstability Working temperature of high alumina ceramics can be as high as 1400 degree celsius.
Good self-lubricity Hgih alumina ceramics have the properties of self-lubricity and inadhesion, the roughness is only 1/6 that of steel pipes thus less flow resistance.
Light weight The density of high alumina ceramics is about 3.6 g/cm3, which is only half that of steel, thus easy for construction and installation.
Application of high alumina ceramics
Industries Easy-to-wear equipment Coal Preparation Heavy medium pipes and cyclones Chemical Soilds-slurry pipes Coal-fired Power Plants Cinder flushing pipes and mixer linings Cement Feeding chutes for raw material kiln and belt discharging chutes Steel Plants Cinder flushing pipes, silo linings and mixer linings 
Cyclone linings Pipe linings Chute linings Service area
Mine Power Plant Steel Cement Conclusion
With very excellent properties of wear-resistance, anti-corrosion and heat-resistance, Borun’s High Alumina Ceramics are widely applied for coal mines, electric power, cement, steel and other high wear industries. They can be used as linings to protect equipment from anti-corrosion and abrasion caused by abrasive particles like coal powder, coal slurry, ash and other corrosive mediums.
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