By AZoM Editors
Table of Contents
Secondary Aluminium SmeltingProblems Encountered in Secondary Aluminium MeltingANH Products for Different Applications Aluminium Contact Belly Band Upper Sidewall & Roof Doors & Flue Jambs & Lintels Sills Burner Safety Lining Repair / MaintenanceANH Refractories
Secondary Aluminium Smelting
Secondary aluminium smelting differs from primary smelting in that it uses recycled aluminium from scrap, rather than refining it from ore. Producing one ton of aluminium from scrap uses about 5% of the energy of that required to produce it from bauxite. As aluminium is readily recycled, producing aluminium from scrap is becoming increasingly popular.
Other than that, both primary and secondary aluminium producers refine the alloys, melt it and pour it into bars called ingots.
Problems Encountered in Secondary Aluminium Melting
Different parts of the melting and holding furnaces face different issues as detailed below:
| Upper Side Walls |
Non-metal contact
High salt and alkali fluxing
Abusive cleaning |
| Sill and Ramp |
Abusive cleaning/dross removal
Dross removal
Thermal shock |
| Ramp and Hearth |
Metal contact, high salt or alkali fluxing
Heavy charging and corrosion
High chlorine and acid fluxing |
| Door Jambs/Lintels |
Mechanical damage
Abusive cleaning
Thermal shock |
| Repair and Maintenance |
Rapid fire/ rapid cure products
Hot repair |
| Roof |
High temperature stressing
Abusive cleaning |
|
|
.jpg)
To minimize such problems, appropriate refractory products that suit specific furnace environments and applications need to be used. These products help in extending furnace lifetimes while ensuring minimal maintenance.
ANH Products for Different Applications
Aluminium Contact
Belly Band
Upper Sidewall & Roof
Doors & Flue
Jambs & Lintels
Sills
Burner
Safety Lining
Repair / Maintenance
ANH Refractories
ANH Refractories Europe is a member of the ANH Refractories family of companies headquartered in Pittsburgh, USA.
ANH Refractories Europe is the primary contact for the European and Middle Eastern markets and is able to supply a comprehensive range of refractories for variety of applications.
.gif)
Primary information source, ANH Refractories Europe.
For more information on this source please visit ANH Refractories Europe.