A two-step technological scheme for removing iron from porcelain stone is presented: a combination of biological and chemical reduction of iron in stagnant and washing water regimes. The whiteness of porcelain stone increases after aging as well as after subsequent iron-removal operations with differing contributions: washing with ammonia oxalate > magnetic separation > washing with water.
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Translated from Steklo i Keramika, No. 1, pp. 30 – 37, January, 2014.
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Platova, R.A., Platov, Y.T. Biochemical Method of Iron Removal and its Effect on the Color Characteristics of Porcelain Stone. Glass Ceram 71, 28–34 (2014). https://doi.org/10.1007/s10717-014-9609-y
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DOI: https://doi.org/10.1007/s10717-014-9609-y