Cast basalt lined steel pipe ash handling with flange and coupling
is composed by lined with cast basalt pipe, outside steel pipe and
cement mortar filling between the two layers. It combines the
advantages of cast basalt and steel pipe, wear resistance,
corrosion resistance, anti-high-pressure, transportation and easy
installation. Water transport in plant ash and metal mine tailings
pipeline hydraulic conveyance system appling this product can life
up to 30 years. Cast basalt lined steel pipe is divided into
straight tube, elbow, tee, reducer pipe.
Cast basalt pipe can be divided into straight pipe, elbow,
three-way (four-way) pipe and variable diameter pipe, etc.
Comparision Chart
Comparison of Ceramic lines with few other materials under standard
conditions
| 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.
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% |
