1,720,961 research outputs found
Plastic strain effect on metallurgical properties of A533-gr.B steel at high temperature
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A Hydrometallurgical way to recover zinc and lead from EAF dusts
No full textIn 1996 the Italian Agency for Environmental Protection (ANPA) has initiated a study of the environmental impact of the industrial sector of steel produced by Electric Are Furnace (EAF). Within the framework of this study a hydrometallurgical process to treat EAF dusts was considered and developed.
The paper describes the zinc and lead recovery from fumes coming from carbon steel production. The zinc extraction consists in acidic leaching followed by SX-EW steps. The leaching sludge containing lead sulfates was treated to obtain pure lead salt and inert solid residue.
The whole process, that minimizes effluents by recycling the main liquid streams, has been developed to obtain marketable products.
The solid waste, containing spinels, was subjected to elution tests in order to verify its compatibility with environmental regulation.
The process, that has been set-up and tested in the laboratories of the University of Pome, will be transferred and studied on a pilot plant in order to assess its industrial and economical feasibility
Cleavage fracture predisction and KIC assessment of a nuclear pressure vessel carbon steel using local approach criteria
No full textLocal approach criteria. An application of cavity growth theory to ductile fracture in low alloy steel.
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Influence of casting defects on fatigue crack initiation and fatigue limit of ductile cast iron.
No full textGoing Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
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