Wearback Cast Basalt Lined Bends
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.
Comparision Chart
Comparison of Ceramic lines with few other materials under standard conditionsMaterial | 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.
Chemical substance ( weight %) of cast basalt
SiO2 | Al2O2 | Fe2O3 | TiO2 | CaO | MgO | K2O | Na2O | FeO | P2O5 |
---|---|---|---|---|---|---|---|---|---|
43.13-41.12 | 12.5-13.52 | 8.64-9.5 | 2.02-2.62 | 9.05-10.22 | 8.65-10.47 | 1.4-1.75 | 4.62-5.28 | 4.82-6.25 | 1.1-1.38 |
The excellent performance of cast basalt lined steel pipe is that it sets tenacity of steel pipe, abrasive resistance of cast basalt pipe, concreteness of cement mortar in one.
This greatly improves the products adaptive capacity in complicated operation conditions. 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.
Physical performance of cast basalt products
Category | Attribute |
---|---|
Density | 3g/cm3 |
Compressive Strength | ≥ 450MPa |
Bending strength | ≥ 60MPa |
Impact strength | 1.76KJ/M2 |
Abrasive strength | 0.07g/cm2 |
Vickers scale | ≥ 720kg/mm |
Elasticity modulus | 1.67x105MPa |
Dilatation coefficient (60℃) | 8.92x10-6 |
Chemical Attack Resistance | |
95%-98% H2SO4 | ≥ 98% |
20%H2S4 | ≥ 94% |
20 %NaOH | ≥ 98% |
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