Abstract
The aim of the research was to explain reasons of fluctuation in magnetic susceptibility of cement dusts and the consequences for the environment. The research comprised measurements of magnetic susceptibility and Fe content in dusts, and also in raw materials, additives, fuels, mixtures and clinkers used for cement production. The samples were taken in four cement plants located in Opole Province (southern Poland). In addition to this, the influence of two production methods (dry and wet) on magnetic susceptibility of dusts and some aspects of ferrimagnetic minerals formation in the process of clinker burning were considered. It was proven that magnetic susceptibility of dusts depends on raw materials and fuels but especially on additives used for cement production, method of production and the carbon monoxide content in gases from clinker rotary kilns. Statistically important linear correlations between magnetic susceptibility and Fe suggest that during clinker burning, ferrimagnetic minerals may be formed.
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