The ecological aspect of moulding sands with new inorganic binders in the process of pouring moulds with liquid metal

One of the factors which influence development tendencies within the scope of moulding sands used in foundry practice is environmental protection. Hence, while assessing technologies, the composition of utilised materials and emissions of harmful substances during particular stages of the production process should be taken into account. Binders used in foundry practice undergo constant transformations which result from the needs of achieving casts of higher quality, from improved efficiency and environmental protection. These challenges are met by our newly developed inorganic binder, which is designated for making casts of non-ferrous metal alloys. In the article presented are the results of research on pollution emissions in the process of making casts of aluminium and brass, with the use of moulding sands with new inorganic binders. Determined concentrations of released chemical compounds were the basis to calculate exposure indicators which were compared with allowable values. It allowed the assessment of the impact of the utilised moulding sands on the work environment. The results of our research were compared against results achieved with the use of moulding sands with organic binders. The research was conducted within the project POIG.01.01.02-00-015/09 "Advanced materials and technologies".

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