Silicon-molybdenum bricks are refractory materials made of high-alumina bauxite clinker, silicon carbide and appropriate binders as the main raw materials, formed by high-pressure molding and high-temperature sintering.
Ultrafine oxide powder and specific additives are added to form a dense glaze film on the surface at high temperature, which prevents the refractory lining from reacting with the material and slows down the penetration erosion rate, making the product have high resistance to chemical erosion and excellent wear resistance.
It is the preferred material for the transition zone and preheating zone of large cement kilns. The thermal conductivity of silicon-molybdenum bricks is lower than that of alkaline products, so the product has good high-temperature insulation effect.
(1) Good wear resistance
(2) High temperature resistance
(3) Compact organizational structure
(4) Excellent thermal shock resistance
(5) Strong corrosion resistance
(6) Strong high temperature pressure resistance
(7) Straight lines on the product appearance
(8) Convenient construction and a protective layer formed during use
(1) Preheating zone
(2) Tertiary air duct
(3) Five-stage preheater
(4) Lime kiln unloading chute
(5) Transition zone of large cement rotary kiln
|
Item |
ZJAS-1680 |
ZJAS-1650 |
ZJAS-1550 |
|
|
Chemical composition（%） |
Al2O3 |
≥65 |
≥63 |
≥60 |
|
|
SiC+SiO2 |
≥30 |
≥30 |
≥30 |
|
Volume density（g/cm3) |
≥2.65 |
≥2.60 |
≥2.50 |
|
|
Apparent porosity（%） |
≤16 |
≤17 |
≤18 |
|
|
Compressive strength at room temperature（MPa) |
≥90 |
≥90 |
≥80 |
|
|
Load softening temperature（℃） |
≥1680 |
≥1650 |
≥1550 |
|
|
Thermal shock stabilit（次） （1100℃，water cooling） |
≥15 |
≥15 |
≥15 |
|
|
Wear resistance coefficient（A/C) |
≤6 |
≤7 |
≤8 |
|
