Wearback cast basalt lined bends with wearback arrangement offers better life as compared to normal wearcoat / cast basalt lined bends in pneumatic conveying system for fly ash, cement, coal etc where abrasion is more. Wearback cast basalt lined bends are composed of steel pipe tee, cast basalt pipe and cement mortar concrete. Wearback cast basalt lined bends are used too many industrial areas where the abrasive, chemical and hot materials transported and which are commonly lined steel elbows. At the same time cement mortar is selected as the filling material and this can make the inside surface of steel pipe in alkali mediums. So the surface of steel pipe generates purifying films these films can prevent being rusted.
Material | Thickness(mm) | Approx life ( Months ) |
---|---|---|
Mild Steel | 10 | |
Cast Iron | 20 | |
Ni-Hard | 20 | |
Cast Basalt | 30 | 20-25 |
Ceramic | 10 | 35-40 |
Basalt is a dark, dense-looking rock, often with small porphyritic crystals, and weathering to a brown colour on exposed surfaces. It is the commonest of all lavas, the basalt flows of the world being estimated to have five times the volume of all other extrusive rocks together. Basalt also forms small intrusions.
Basalt casts are considered the best lining materials for industries dealing with abrasion resistance.