Monday 1 april 2019


09.00Workshop carbonation

10.30Coffee break

11.00Workshop carbonation


14.00Workshop inorganic polymers

15.30Coffee break

16.00Workshop inorganic polymers

18.00Visit St. Rumbold’s tower with workshop participants



09.00Welcome word

09.10Plenary Lecture

Karen Hanghøj – EIT RawMaterials

Raw materials sourcing in a Circular Economy framework – why understanding the raw materials value chain matters

09.50Exhibitor pitch presentations

10.10Coffee break

10.40Plenary Lecture

Waltraud M. Kriven – University of Illinois

23Na and 27Al MAS-NMR on slag-fly ash binders and slag-metakaolin binders

11.20Plenary Lecture

Hiroyuki Shibata – Tohoku University

Thermophysical properties of silicate melts and glasses

12.00Lunch and visit museum Hof van Busleyden


Session 1: Slag valorisation and thermodynamics

15.00David Algermissen – FEhS – Building Materials Institute

Valorisation of EAF slag through a defined reduction method

15.20Visa Saari – Boliden Harjavalta

Boliden Harjavalta copper and nickel smelter – Review of smelter operations, slags and slag valorisation studies

15.40Moritz to Baben – GTT Technologies

Thermochemistry of vanadium containing slags

16.00Hugo Lucas – IME-RWTH Aachen University

Thermodynamics of conditioning MSWI bottom ash using SAF for usage in minerals products

16.20Buhle Xakalashe – IME-RWTH Aachen University

Towards red mud valorisation: EAF smelting process for iron recovery and slag design for use as precursor in the construction industry


Session 2: Alternative cements and aggregates

15.00Jo Van Caneghem – KU Leuven

Leaching of heavy metals from concrete pavers containing waste-to-energy bottom ash as an aggregate

15.20Abel Danezan – CNRS CEMHTI

Study of the kinetics of hydration of industrial granulated blast furnace slags: a structural investigation

15.40Andreas Ehrenberg – FEhS – Building Materials Institute

Glass structure of granulated blast furnace slag and its reactivity – A new approach

16.00Yubo Sun – Microlab, TUDelft

Investigation on the potential application of MSWI bottom ash as cement substitutes

17.00Pitch presentations posters

18.00Poster reception


08.30Plenary Lecture

Jan Bollen – Arcelor MIttal

Slags valorisation in the EU: tapping the full potential

09.10Plenary Lecture

Vincent Basuyau – European Commission

Legal and environmental bottlenecks and opportunities for slag-based products valorisation

09.50Coffee break


Session 3: Slag properties at high temperature

10.20Sander Arnout – InsPyro

Fluoride emissions from furnaces and relevance of slag fluoride capacity

10.40Suguna Varanasi – RINL-Visakhapatnam Steel Plant

Effect of physico-chemical properties of ladle furnace slag on sulphide capacity and slag valorisation options

11.00Ling Zhang – KU Leuven

In-situ study on CaO-Al2O3-SiO2-MgO (CASM) slag solidification by using electrical conductivity measurements

11.20Rodrigo Lencina – Imerys Aluminates

Prefused calcium aluminate flux vs. fluorspar for slag conditioning of stainless steel – a comparative life cycle assessment study

11.40Joon Sung Choi – Yonsei University

Structure-property prediction model via phase stability analysis of slags for reducing flux


Session 4: Slag storage conditioning and leaching

10.20Ajay Kumar Gupta – Tata Steel

Identify factor to accelerate forced weathering rate for LD slag at Tata Steel to improve its availability

10.40Maud Herbelin – Laboratoire Magmas et Volcans Saint-Etienne

Evolution of chemical, mineralogical and magnetic properties of electric arc furnace slag over weathering

11.00Mathieu Scattolin – Ecole des mines de Saint-Etienne

Use of organic amendment and Endomycorrhizal fungi for steel slag phytostabilisation

11.20Simone Neuhold – Montanuniversitaet Leoben

Minimising the leaching of V and Cr from electric arc furnace slags by decreasing the FeO/SiO2 ratio

11.40Jakob Kero – Luleå University of Technology

A study on the leachability of metals from modified copper slag for added value applications



Session 5: Metal recovery

13.30Shin-ya Kitamura – Tohoku University

Separation of phosphorus and manganese from steelmaking slag by selective reduction

13.50Frantisek Kukurugya – VITO

Recovering chromium from stainless steel and ferrochrome slags

14.10Gisele Azimi – University of Toronto

Valorisation of electric arc furnace slag for the recovery of niobium and titanium

14.30Zhongfu Cheng – KU Leuven

An effective equilibrium reaction model for the submerged plasma fuming process using ChemApp


Session 6: Slag valorisation as ceramics and insulation materials

13.30Eun Jin Jung – Research Institute of Industrial Science & Technology

A study on the utilisation of slag as insulation material with excellent fire resistance

13.50Maria Francisca Quereda Vazquez – Instituto De Technologia Ceramica

LIFE FOUNDRYTILE: valorisation of iron foundry sands and dust in the ceramic tile production process

14.10Patricia Rabelo Monich – Università degli Studi di Padova

Porous glass-ceramics from alkali activation and sinter-crystallisation of vitrified bottom ash

14.30Giovanna Sauve – KU Leuven

Life cycle assessment of novel technical routes to valorise MSWI bottom ash

14.50Youngjae Kim – Korea Institute of Geoscience and Mineral Resources

Evaluation of the applicability of slag and mining wastes for producing glass fibre

15.10Coffee break


Session 7: Innovation, business models and case studies

15.40Boudewijn Piscaer – Pantheon Performance Foundation

Removing prescriptive barriers to innovation implementations

16.00Pedro Borges – ArcelorMittal Brasil

Steel aggregate business plan – A case of success in Brazil

16.20Sotya Astutiningsih – Universitas Indonesia

Ni slag valorisation in Indonesia: a case study

16.40José Palacios – Universidad de Playa Ancha

New resources: studies on slag reprocessing and utilisation in Chile


Session 8: Metal recovery and internal use of slags

15.40Abdoulay Maihatchi – CNRS – Université de Lorraine

Beneficiation of iron-rich tailings from the mining industry

16.00Jihye Kim – University of Toronto

Valorisation of blast furnace slag to recover rare earth elements utilizing a pyro-hydrometallurgical process

16.20Mattia De Colle – KTH Royal Institute of Technology

Optimising the use of EAF stainless steel slag to neutralise acid baths

16.40Christiaan Zeilstra – Tata Steel Nederland

18.00Dinner at Salons van Dijck


08.30Plenary Lecture

Mansoor Barati – University of Toronto

Dry granulation and heat recovery from metallurgical slags

09.10Plenary Lecture

Patrick Ammerlaan – SQAPE

Commercialising geopolymers and gaining trust in the Dutch market through the patented SQAPE technology

09.50Coffee break


Session 9: Alternative heating, cooling and reactivity

10.20Willem Deleu – MEAM

Heat recovery for an efficient microwave process

10.40Irene Ruiz-Oria – Atlantic Copper S.L.U.

Dry copper slag atomisation: on site laboratory-pilot scale trials at copper smelter facility

11.00Jan Peter Schupsky – Forschungszentrum Jülich GmbH

Influence of parameters on the crystallisation behaviour of oxidic slag systems determined by CLSM investigations

11.20Ruben Snellings – VITO

Reactivity of non-ferrous metallurgical slags and sludges measured by the RILEM R3 test

11.40Pavel Lopez – KU Leuven

The impact of amorphous-crystalline content in the hydration kinetics of a modified-BOF slag


Session 10: Alkali-activation

10.20Dimitrios Panias – National Technical University of Athens

Utilisation of slag for the development of fire resistant geopolymers

10.40Lars Cuyvers – Metallo Belgium N.V.

KORANEL®: a clean synthetic mineral for sustainable building applications

11.00Christina Siakati – KU Leuven

Binary, ternary and quaternary Fe-rich slags: influence of Fe and Si substitution by Ca and Al on the atomic structure and reactivity

11.20Alexander Wetzel – University of Kassel

Alkali-activated slag with low water/binder-ratio

11.40Tim Schade – University of Kassel

Setting behaviour of alkaline activated face concrete for paving slabs


13.00Debate – Q&A session

14.00Closing speech by organisers

14.30Closing reception & networking


08.00Plant visit Orbix or Metallo

Poster pitch presentations

Fernando Pereira – Mines Saint-Etienne

Hydrometallurgy and Phytomanagement Approaches for Steel Slag management

Seyed Majid Feghhi – Mobarakeh Steel Company (MSC)

EAF Slag Processing in Mobarakeh Steel Company in Iran

Andreas Ehrenberg – FEhS – Institut für Baustoff-Forschung

Potentials of new cements made from granulated blast furnace slag, fly ash and clinker

Jagmeet Singh – National Institute of Technology, Jalandhar

Effect of alkali content on compressive strength and efflorescence of NaOH activated copper slag mortar

Mark Cesnovar – ZAG

Alkali activated foams from slag

Bram Mast – Hasselt Univerisity

Mechanical and microstructural properties of inorganic polymers in a gamma radiation field

Hiromichi Takebe – Ehime University

Temperature and composition dependences of viscosity for FeOx-SiO2 slag melts under magnetite formation control

Katrijn Gijbels – UHasselt

Development of cementitious materials for successful radon immobilization

Aparna Nedunuri – Department of Civil Engineeering, Indian Institute of Technology Bombay

Effect of composition of precursor and solid content on rheological behaviour of alkali activated binders

Guilherme Ascensão – Italcementi S.p.A, HeidelbergCement group

The effect of CaO-rich admixtures on controlling the drying shrinkage of alkali-activated materials

Yannan Wang – KU Leuven

Mixing characteristics of additives in slag pot

Elise François – Department of Materials Engineering, KULeuven

In-situ monitoring of additions to liquid slag using laser-induced breakdown spectroscopy (LIBS)

Michiel Giels – KU Leuven

Alkali-activation of vitrified bauxite residue: the effect of MgO

Michiel Giels – KU Leuven

Heavy metal release from porous inorganic polymers made from Fe-rich slag: effect of al content and curing time

Sabrina Van Winkel – KU Leuven

Microstructural changes in freeze linings during zinc fuming processes

Somnath Basu – Indian Institute of Technology Bombay

Interaction between oxygen steelmaking slag and water contaminated with metalloid ions

Samant Nagraj – Metallo Belgium

Submerged plasma zinc fuming process

Zhuangzhuang Liu – KU LEUVEN

Rheological transitions of the solid-bearing BOF slag during cooling process

Roberto Murillo Alarcón – KU Leuven, Department of Materials Engineering

Open-cell porous inorganic polymers for sound absorption

Zhongfu Cheng – KU Leuven

ZnO and PbO reduction from slag particles in ICP fuming process

Guixuan Wu – GTT Technologies

Inclusion of P2O5 and VOx in the viscosity model for molten slag in multicomponent oxide systems

Jorn Van De Sande – VUB

Engineering of CaO-Al2O3-FeOx-SiO2 slags for high-performance hybrid cements

Yi Jiang – Hunan University

Valorization of steel slag through pelletization and CO2 sequestration: CO2 uptake, leaching and mechanical properties

Arne Peys – KU Leuven Department of Materials Engineering

Sustainable Resources’ Database: the demise of the concept “residue”

Tobias Hertel – KU Leuven

Synthesis of inorganic polymers from vitreous slags produced by EAF smelting of bauxite residue

Glenn Beersaerts – KU Leuven

Developing a 3D-printable inorganic polymer, derived from an Fe-rich slag

Christina Siakati – KU Leuven

Binary, ternary and quarternary Fe-rich slags: influence of Fe and Si substitution by Ca and Al on the atomic structure and reactivity

Georgia Flesoura – KU Leuven

Alkali activation of synthetic SiO2-CaO-FeOx-Al2O3-MgO glass

Ahmet Dok – KU Leuven, Department of Materials Engineering

Optimization of hydraulic properties of a C4AF – C3A rich metallurgical residue

Jennifer Astoveza – Imerys Aluminates (Kerneos)/ KU Leuven/ Université de Lorraine

Assessing the Reactivity of Industrial By-Products in Calcium Aluminate Cement-Based Formulations

Vincent Hallet – KU Leuven/UGent

High-volume OPC replacement by iron-rich non-ferrous metallurgy slag

Vincent Hallet – KU Leuven/UGent

Alkali-activation of Fe-rich slag using mixed Na-K solutions

Pithchai Pandian Sivakumar – KU Leuven/UGent

Valorising Combined Residues Towards a Calcium Sulfoaluminate Cement

Youva Tyagi – Greencem

Zero carbon emissions from a waste wood based light weight eco-friendly concrete system through Mecalithe

Arnaud Boonen – KU Leuven, Faculty of Engineering Technology Campus Group T, 3000 Leuven, Belgium

Tailoring properties of porous inorganic polymers: effect of the precursor

Olivier Lippens – KU Leuven

Carbonation resistance of cement from iron-rich slag

Youva Tyagi – Greencem

Minimisation of carbon dioxide emission by reducing cement in a concrete system through Mecalithe® technology

Lu Lin – Metallurgical Technology Institute, Central Iron and Steel Research Institute, China

Influence of distribution behaviour of phosphorus between P-rich and matrix phase in CaO-SiO2-FetO-P2O5 slag

Rensheng Chu – Shougang Group Co.

Industrial application of aluminium slag in steelmaking process


The transition towards a sustainable world is emerging and global measures are required. One of the major goals outspoken at the UN climate conference in Paris (2015) is “to keep the global temperature rise this century well below 2°C above pre-industrial levels and to pursue efforts to limit the temperature increase even further to 1.5°C”. Sustainable Materials Management (SMM) is one of the core concepts to reach this global need. As a resource-poor and import-dependent continent, the European Union seeks to produce materials and products through environmentally friendly methods based on resource efficiency, recovery and recycling. The valorization of residues from high-temperature processes is an essential element of this SMM strategy.

The “International Slag Valorisation Symposium” is a benchmark in the domain of slag engineering and zero-waste slag valorisation. It aims at contributing towards near zero-waste processing and processes and closed material loops by offering to researchers, industrial actors and entrepreneurs the opportunity to share knowledge and critically discuss the challenges and opportunities in the field of slag valorisation. To that end, specialists and/or high-level representatives of the key institutes in this field from both academia and industry are invited to give a lecture covering a specific topic in a relatively detailed way, striking a balance between scientific depth and relevance as regards industrial application in pursuit of a sustainable world. The content of the Symposium provides a rich overview of the contemporary trends in the worldwide research and innovation strategies as regards the valorisation of ferrous and non-ferrous slag, fly ash, bottom ash and numerous other high-temperature (metallurgical) residues.

The objectives of the sixth edition of the International Slag Valorisation Symposium – with Science, innovation and entrepreneurship in pursuit of a sustainable world as subtheme – is to communicate and discuss the latest advances in the fields of high temperature slag engineering, slag cooling and solidification, metal recovery, valorisation of slags in building materials and other novel/niche applications, life cycle analysis and legislative requirements. Within these categories covering the whole slag production and treatment chain, from the high temperature molten state to end-products, sustainable materials management and entrepreneurship are the common thread. Therefore, in this edition of the International Slag Valorisation Symposium, dedicated speeches on the principle of a sustainable future for high-temperature (metallurgical) residues with respect to legislation and entrepreneurship will be conducted.


The sixth edition of the International Slag Valorisation Symposium is sponsored by ArcelorMittal, Imerys, Inspyro and the affiliates within the Centre for High Temperature Processes and Sustainable Materials Management.

Previous editions