Analysis of the mechanical behavior of an alternative sand for foundry molding

Abstract

The exploration and beneficiation of iron ore result in a substantial generation of waste, predominantly directed towards tailings dams, heightening environmental concerns. Faced with this environmental challenge, numerous studies have been devoted to seeking sustainable solutions, aiming at the utilization of waste in various sectors of the economy. In this context, this study focuses on the technical feasibility investigation of using sandy iron ore waste as molding sand in foundry processes. Foundry molding sand, crucial in casting, must meet specific requirements and exhibit particular characteristics to effectively fulfill its function. To address this issue, test specimens were fabricated using three distinct types of sands: Standard Sand, Sand 01 (without magnetic separation), and Sand 02 (subjected to magnetic separation), combined with two binders (bentonite and sodium silicate). Subsequently, the test specimens underwent mechanical tests for tension, flexure, and compression, with the aim of evaluating their ability to withstand applied forces. The results of these tests revealed that Sand 02, when combined with sodium silicate, demonstrated satisfactory performance, in accordance with established standards and studies for obtaining sands intended for molding in foundry processes.