Beneficiation of pvc wastes in iron oxide reduction

Ndue Kanari (1) , Nour-Eddine Menad (2) , Frédéric Diot (1) , Lev Filippov (1) , Fabien Thomas (1) , Jacques Yvon (1)

1 LEM - Laboratoire Environnement et Minéralurgie
2 BRGM - Bureau de Recherches Géologiques et Minières (BRGM)

This study aims at using wastes of Polyvinyl Chloride (PVC) as alternative reducing agents in iron metallurgy. Thermal behaviors, in air atmosphere, of PVC waste and pure PVC were studied between 225 and 900 °C. Mixtures of hematite with both the PVC samples, were isothermally treated between 300 and 1050 °C for different durations. Solid reaction products were subjected to scanning electron microscopy, X-ray diffraction and infrared spectroscopy. The direct reduction of hematite into metallic iron, at 1000-1050 °C, by PVC hydrocarbon was proved. The reduction steps, the possible reaction mechanisms and the impact of formulation additives were also discussed.

Mots clés: PVC; thermal treatment; hematite; reduction

Domaines: Génie des procédés; Matériaux; Autre; Chimie inorganique

Ndue Kanari, Nour-Eddine Menad, Frédéric Diot, Lev Filippov, Fabien Thomas, et al.. Beneficiation of pvc wastes in iron oxide reduction. 43 ème international october conference on mining and metallurgy, Oct 2011, Kladovo, Serbia. ⟨hal-02572801⟩