Use of Alkaline Solid Wastes from Kraft Pulp and Paper Mills, Dregs and Grits in Cement Production C.M.M.E. Torres, L.G. Pedroti, C.M. Silva, W.E.H. Fernandes, N.G. Viana, R.O.G. Martins, G.E.S. Lima, L.M. Sathler, I.K.R. Andrade and M.A. Caetano Abstract In Brazil, kraft pulp mills are rapidly expanding and industrial waste generation is increasing. Technical feasibility of using solid wastes from kraft pulp mills as raw material in other industries may be an interesting approach to manage environmental and economic aspects of the industry. This paper proposes the incorporation, in different proportions (0, 2.5, 5 and 7.5%), of alkaline solid wastes from pulp mills, namely dregs and grits, to clinker in the Portland cement industry. The research was carried out in two steps: (i) characterization of dregs, grits and clinker; (ii) laboratory testing (determination of soundness by the Le Chatelier method, determination of setting times, determination of water content of the paste with normal consistency, determination of compressive strength and static modulus of elasticity). The results showed that the addition of dregs and grits to the clinker up to 2.5% were feasible according to the Portland cement Brazilian standards. Keywords Kraft pulp mills Á Dregs Á Grits Á Waste management Á Clinker Introduction Bleached kraft pulp mills are rapidly expanding in Brazil. Currently, Brazil is the 4th largest pulp producer of the world, with 17.37 million produced tons. The expectation is that by 2017, Brazilian production exceeds 19 million tons and will occupy the 3rd position in the world ranking [1]. C.M.M.E. Torres (&) Á L.G. Pedroti Á C.M. Silva Á W.E.H. Fernandes R.O.G. Martins Á G.E.S. Lima Á L.M. Sathler Á I.K.R. Andrade Á M.A. Caetano DEC—Civil Engineering Departament, UFV—Universidade Federal de Viçosa, Av. PH Rolfs, Viçosa, Minas Gerais 36570-900, Brazil e-mail: caiomiquelino@yahoo.com.br N.G. Viana UniViçosa—União de Ensino Superior de Viçosa, Av. Maria Paula Santana, 3815, Silvestre, Viçosa, Minas Gerais 36570-000, Brazil © The Minerals, Metals & Materials Society 2017 S. Ikhmayies et al. (eds.), Characterization of Minerals, Metals, and Materials 2017, The Minerals, Metals & Materials Series, DOI 10.1007/978-3-319-51382-9_92 843