Great Western Minerals Group Ltd. - becoming a fully integrated rare earth producer
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Co-Reduced
The manufacture of samarium cobalt alloys via the co-reduction of an oxide mix is a specialised process yielding very fine-grained high performance alloy powders. Co-reduction has now become the industry standard for SmCo5 production; the capability of this process also extends to the manufacture of Sm2Co17 powders, where the product type can provide significantly improved processing performance for customers.
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| Compositions and Purity | ||
| (Weight %) | SmCo5 | Sm2Co17 |
| Sm | 33.0 - 42.0 | 24.0 - 30.0 |
| Fe | 14.0 - 19.0 | |
| Cu | 4.0 - 8.0 | |
| Zr | 1.5 - 3.5 | |
| Co | Balance | Balance |
| Calcium | <0.15 | <0.15 |
| Nickel | <0.20 | <0.20 |
| Iron | <0.20 | |
| Aluminium | <0.05 | <0.05 |
| Silicon | <0.05 | <0.05 |
| Magnesium | <0.03 | <0.03 |
| Boron | <0.0005 | <0.0005 |
| Oxygen | <0.30 | <0.30 |
| Carbon | <0.030 | <0.060 |
Individual compositions are usually set by the end-user, with alloys manufactured and supplied to specifications agreed between LCM and the customer.
Alloying additions
Praseodymium and Gadolinium are common rare-earth additions to these Sm-Co based alloy systems.
Form
A dark grey powder, particle size 100% <300µm
Quantity
Batch sizes range from 200kg to 2000kg
Packaging
Inner:
Vacuum-Sealed multilayer aluminised laminate packs. This packaging provides excellent shelf life with protection from oxygen and humidity.
Outer:
UN Steel drums 50-100kg net weight
Quality assurance
Production processes are part of our quality management system – certified to ISO9001: 2000 standard. Each batch is supplied with a Certificate of Conformance detailing the results from full chemical analysis and, if required, powder size distribution.