Eventos Anais de eventos
COBEM 2017
24th ABCM International Congress of Mechanical Engineering
Assessment of mill scale formation in steel industries using thermogravimetric analysis
Submission Author:
Lívia Maria Rédua Nunes da Costa , SP
Co-Authors:
Gretta Larisa Aurora Arce Ferrufino, Ivonete Ávila, João Carvalho, Lívia Maria Rédua Nunes da Costa
Presenter: Lívia Maria Rédua Nunes da Costa
doi://10.26678/ABCM.COBEM2017.COB17-0581
Abstract
The high productivity in the steel industry consequently generates a high amount of waste, so it is necessary to join the environmental guidelines with the world reality of the companies. In this way, we seek to reduce expenses with waste treatment and storage and also transform it in a co-product generating revenue for companies. Mill scale is a co-product from the oxidation of the steel surface, when subjected to the thermal gradient or to the simple action of time, is generated in some processes such as casting, lamination for profile and rebar, lamination and welding to produce trusses among others. The mill scale must be stored according to the relevant environmental standards, due to its classification as hazardous waste. (Class I, NBR 10004: 2004) There are few studies that show and model their training and how to add value to the co-product in question. In this sense, operations of morphological and structural analysis of the steel before and after the oxidation are adopted, as well as chemical and physical characterizations and thermo-gravimetric analyses allowed the deep investigation of mill scale formation of the and a potential use for it.
Keywords
hazardous waste, thermogravimetric analysis., mill scale, steel industries
