SUSTAINABLE PROCESS INDUSTRY

1. SPIRE-7 SPIRE Brokerage event October 22nd 2013 SUSTAINABLE PROCESSINDUSTRY EUROPEAN INDUSTRIAL COMPETTIVENESS TROUGH Resource and energyefficiency Project Idea Presentation Tenaris idea – Horizon 2020 SPIRE Call 7 07. October 2013

2. Tenaris Global industrial System

3. Project Idea Concept By-products of the steelmaking industry shall be considered as a secondary raw material source due to their high content of iron and other metal oxides. Today metallurgical treatment/extraction methods, such as pyro-metallurgical processes, are aimed to recover the metal oxides contained in different mediums: from ores to waste. In Steel industry most of these are devoted to the recover of Zn from filter dusts, thus representing an example of a waste stream generated by an industrial sector and recovered by another one. The project concept is to extend this approach to the recovery of other valuable metals, including Fe contained in industrial by-products or waste. This will contribute to the 2030 target reduction (up to 20%) of the non-renewable primary raw material intensity. The plasma technology (electrical arc furnace), presently limited to the treatment of dusts from high alloyed steel production, can be widely employed and further developed to effectively recover raw materials in an economic and eco efficient way. This responds to SPIREKA 4.3: Technologies for (pre)treatment of process and waste streams (gaseous, liquids, solids) for re-use and recycling

4. Project Idea Concept ZnO to Zn smelter Scrapsubstitute Metal oxide (non-ferrous) C-based residuals (petro-chemical) Si-based residuals (glass, ceramic, refractory) EAF in reducing conditions Inert slag to cement

5. Idea Impact The plasma technology can treat a large variety of waste streams: • The by-product coming form steel industry: • slag, scale, dust, sludge • Nonferrous waste: • Incinerator ashes • Catalyst for vanadium (V, Ni, Mo. Co) • Mn-sludge • Ni-dust from FeNi-production • Fayalite slag • Residuals containing C (i.e. chemical and petro-chemical industry) • Residual containing Si (i.e. ceramic, refractory and glassindustries)

6. Idea Impact The project the idea is related to the SPIRE 7 call topics: • development of new approach for the design and scale up of industrial process for metals recovery from waste solids (TRL 7) • integration with the currently existing plant/technology taking into account the links with primary process • prove industrial relevance and feasibility of proposed technology by demonstration activities in industrial environment The expected impact are: • significant improvement of the resource efficiency increasing the recovery of material up to 40% by: • maximum flexibility in the materials charged • tailor made according to the production size as well as market requirements. • energy recovery from flue gas (steam o electrical energy generation) • cross sectorial technology transfer

7. Existing Project Consortium • Tenaris:installation and operation of an electrical arc reduction furnace - EARF (industrial size demo plant) for Fe-alloy recovery from different EAF steel and rolling mill waste streams and from metals containing wastes/by-products generated by other process industries • Centro SviluppoMateriali: process development and modellingfor the recovery of iron and valuable metals • Tenova: engineering and plant supplier

8. Looking for partners… • Companies with residual containing valuable metals, C and/or Si (chemical, petro-chemical, ceramic, glass, non-ferrous, ….) • Final user of recovered valuable metals and slag (non-ferrous, cement, …) • Company with LCA capability for process and product environment impact analysis

9. Contact details Tenaris Dalmine Piazza Caduti 6 luglio 1944 1, I-24040 Dalmine, Italy • Caterina Epis, Institutional Relations Manager Tel. +39 035 5603505 Mail: cepis@tenaris.com • Fabio Praolini, Environment Regional Manager Tel. +39 035 5603374 Mail: fpraolini@tenaris.com