The 150 t/h jigging plant at Transalloys, Souith Africa.

 

 

Transalloys Pty Ltd, South Africa (BOO)

Transalloys, established in 1998, recovers the ferroalloys contained in a 7 million ton slag dump located near Witbank in Mpumulanga, South Africa. This was the first ‘own-and-operate’ arrangement entered into by Atoll.

The slag dump contains between 3 % and 4 % ferro-manganese and silicon-manganese, of which about 95 % is recovered. In the process the slag is converted into an inert coarse tailings material. In addition to this environmental advantage, the non-metallic discards are deposited in the space vacated by the treated slag, obviating the need for a new dump.

The plant has a nominal 150 t/h capacity and is designed to operate 24 h/day with an availability of 80 %. It comprises a crushing, screening and jigging process. The latter is done using coarse and fine APIC jigs with underbed air pulsation to provide sufficient energy to pulse the large dense metal particles to separate them from the slag particles.