Products Refractory Industry Sintered-MA-Spinel

Product Information - Sintered-MA-Spinel


Sintered spinel MgAl2O4 is a synthetically produced raw material available with an excess of either Al2O3 or MgO and used in many refractory applications.

MgO rich spinels are mainly used as alternative to magnesia chrome bricks in MgO-based refractory products, e.g. in cement rotary kilns, in order to avoid the emission of CrVI during the break-out of bricks, which may be dangerous for the health of the workers and the environment.
Al2O3 rich spinels are mainly used in Al2O3-based refractories, e.g. in monolithics for steel ladles, non-ferrous metallurgy and glass production.
Origin (local): China
Production process: Spinels are synthetically produced by the sintering of caustic Magnesia and alumina or bauxite in briquetted form in the required ratio in rotary kiln. The firing temperature is approx. 1,800°C. The briquettes have a size of approx. 30mm and can be crushed and milled in order to achieve the required grain sizes.
Processing method: Sintered spinel can be supplied in typical refractory sizes such as
- 'run of kiln', i.e. 0-approx. 30mm
- crushed grain sizes, e.g. 0-6mm, 0-3mm, 0-1mm, 1-3mm, 3-6mm etc.
- milled material, e.g. 0-200mesh, 0-325mesh, 0-20µ and other sizes
Packing: Several packing types are available:
- big bags, with or without pallets
- 25kg bags, with or without pallets
- loose
Hazardous goods: No hazardous material.
Properties: Spinel increases thermal shock resistance and is resistant against slag corrosion.


Possehl Erzkontor GmbH & Co. KG
Beckergrube 38-52
23552 Lübeck

Phone:  +49 - (0) 451 - 148 0
Fax:  +49 - (0) 451 - 148 355