Diseño de un sistema de molienda para reciclaje seco en la producción de láminas de fibro cemento.

Abstract

The design of a milling system for dry recycling in the production of fiber-cement sheets in the TUBASEC C.A. Company installations was developed. By means of this study is seen how to take full advantage of dry recycling generated at the plant. With the inductive method, the factors influencing to achieve the goal of this research work were considered, such as characteristics, treatment and its use of recycling. By applying the experimental method is conducted laboratory tests which provide insight into the material-technical manner. It was studied the physical characteristics such as hardness through volumetric method of Le Chatelier, with procedures INEN standards, and chemical composition analysis in X-ray equipment, in laboratories of Cemento Chimborazo Company. Carrying out tests mills, it was found that treatment time will be given to the material to obtain mix cement with appropriate solids concentration. Assay plates using testing bending resistance was determined which is the ideal rate may be incorporated in the process, following assay techniques URALITA standards Spain. Then, the following results were obtained: the hardness of the material is in the middle range, density 2.58 g/ml, in the chemical composition magnesium oxide has a 4.42 %, load in the ball mill will be 2047.50 Kg, material loading 200 Kg, volume of water 830 L, and the equipment will operate with an engine of 20.3 rpm. It was concluded that material to recycle has a hardness which can be treated in ball mill wet strength with a time of 40 minutes and it can be added to the composition 7.5 % of the mix cement obtained. It was made the calculations and considering all elements, indicating ends that the milling system will cost approximately $ 15000. It is recommended that the material passes through a pre-shredding process before entering the mill and control the fineness and solids concentration for entry into production.