Study of physico-chemical properties of diatomiteAlgeria: Application to the thermal insulation ofliquid steel bath

Auteurs :  H. MERADI, L. Bahloul, K. Bedoud, S. BENAYACHE
Année : 2017
Domaine : Sciences des matériaux
Type : Article de journal
Revue : Proceedings of Engineering and Technology – PET
Résumé en PDF :  (résumé en pdf)
Fulltext en PDF :  (.pdf)
Mots clés : diatomite, fluorine, Tundish, steelwork, thermal insulation, DSC

Résumé : 

The purpose of this paper is to characterize and to evaluate the diatomite powder of Sig region (West Algeria) withoutfluorine by powder generally used in tundish to thermal insulation of steel bath contain fluorine, that affecting the environment andhealth of workers. Thermal and physicochemical characterization showed different endothermic and exothermic peaks. Thescanning microscopy method was used and a large porosity was observed, which is very beneficial for improving the thermalconductivity of the product. The trial industrial in steelwork with diatomite powder, showed a weak loss temperature of steel (10 °Cmax), and filled fully function in thermal insulation of the steel bath.