Journal of Sustainable Metallurgy

, Volume 5, Issue 2, pp 181–194 | Cite as

Design and Operation of Dry Slag Granulation Pilot Plant

  • Mark CookseyEmail author
  • Adrien Guiraud
  • Benny Kuan
  • Yuhua Pan
Thematic Section: Slag Granulation
Part of the following topical collections:
  1. Slag Granulation


CSIRO has been working on a dry granulation process, integrated with heat recovery, since 2002. It involves a rotary disc that atomizes molten slag to produce liquid droplets, which are rapidly quenched to become solid granules. The hot granules are fed to a counter-current moving packed bed heat exchanger, where they are further cooled and finally discharged at close to ambient temperature. Air is used in both units to recover the heat. Development has proceeded through proof-of-concept tests, a prototype and now a pilot plant, capable of processing 100 kg/min of slag. Extensive CFD modeling was used to predict disc and granulator performance as a function of design and operating parameters. Experimental results on the dry slag granulator pilot plant have demonstrated that the process can effectively produce glassy slag granules from molten iron blast furnace slag, and recover significant heat, and that the CFD model can be used to predict process performance. Work continues to scale-up the process and extend the operation to other metallurgical materials, such as non-ferrous slags and mattes.


Ironmaking Steelmaking Slag Granulation Heat recovery 



The authors gratefully acknowledge contributions to the project by Sharif Jahanshahi, Dongsheng Xie, Peter Witt, Jason Donnelly, Steve Sanetsis, Bernie Washington, Michael Somerville, and Dylan Marley.

Compliance with Ethical Standards

Conflict of interest

The authors declare that they have no conflict of interest.


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Copyright information

© The Minerals, Metals & Materials Society 2019

Authors and Affiliations

  1. 1.CSIROClayton SouthAustralia
  2. 2.Flowmatic Pty LtdDoncaster EastAustralia
  3. 3.School of Materials and MetallurgyUniversity of Science and Technology LiaoningAnshanChina

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