Diseño, construcción e implementación de un sistema para controlar la expansión de polvo generada por un molino pulverizador de cal

Abstract

The main purpose of the project was to carry out the design, construction and implementation of a system to control the expansion of dust generated by a lime pulverizing mill, which will be incorporated to improve the quality conditions in the work of the limestone and mineral company DUCHICORP OXIMICRON CIA.LTDA located in the Calpi parish, Bayushi San Vicente neighborhood, province of Chimborazo. The methodology that was used had as its first point to determine the existing problem in the company, for which measurements of particulate matter were carried out to know the level of exposure of the operators, after carrying out a bibliographic research, three alternative solutions were proposed to the control system, for which a morphological matrix of weights was made, obtaining the winning system, resulting in a standard pitch helical screw conveyor. Using Solidworks software, the main components of the system were designed; in addition, ASTM A-36 steel was used for construction. Subsequently, with the help of software specialized in finite elements, the deflection in the main elements was analyzed, as well as the safety factor and buckling. Obtaining as a result a total power of 2.74 HP, a speed of 74.66 RPM, a deflection of 0.1225 in, a screw length of 9ft and a deflection calculated in Ansys of 0.18549 in. Finally, particulate matter measurements were taken after the system was implemented, resulting in a measurement of 10.267 mg/ m ^3, which is within the permissible limit of the NIOSH regulations.