Bauxite residue is also known as red mud, Bayer process tailings or bauxite process tailings (Evans, 2015) and it may be split further into two fractions. The fine fraction, ‘red mud’ and the coarse fraction ‘process sand’ (>106μm or >150μm) (Courtney and Timpson, 2005).
Courtney, R.G., Timpson, J.P., 2005. Reclamation of fine fraction bauxite processing residue (bauxite residue) amended with coarse fraction residue and gypsum. Water Air Soil Pollut. 164 (1–4), 91–102. https://doi.org/10.1007/s11270-005-2251-0
Evans, K., 2015. Successes and challenges in the management and use of bauxite residue. Proceedings of the Bauxite residue Valorisation and Best Practices Conference. 5–7, October 2015, Leuven, Belgium. Available at: http://conference2015.redmud.org/wp-content/uploads/2015/10/Ken-EVANS-secure.pdf. Accessed 3rd February 2016.