Plano de manutenção preventiva em uma planta de beneficiamento de carvão mineral

Abstract

Mineral coal is of great importance to the world economy, according to the International Energy Agency it is estimated that 41% of the world's electricity is generated through the process of burning coal. The CGT ELETROSUL thermal plant located in the mu nicipality of Candiota, RS, receives crude mineral coal from CRM (Companhia Ri ograndense de Mineração). This raw coal is conveyed through conveyor belts to the coal beneficiation plant where the beneficiation process known as dry coal jigging takes place, which consists of separating the mineral coal from other elements such as sulfur and other minerals not used in the process. burning. This separation process is based on the density of the materials present in the raw coal which, in a first moment, is conveyed by conveyor belts to a crusher. After this process, the crushed coal is taken by a conveyor belt to the vibrating table, where the material separation process takes place. After this separation process, where the material is divided into three parts, the first is the processed coal, the second the intermediate coal and finally the by-product called Ganga. The processed coal is sent to the boiler burning process to generate electricity. This coal processing plant consists of four cells with a production capacity of 120 tonnes / hour each, totaling 480 tonnes / hour to meet the demand for the boiler. The work in development aims to increase the efficiency of the coal pro cessing system of CGT ELETROSUL. Currently, the system is not being operated at full capacity because the maintenance sector has been facing numerous difficulties, as the equipment present in the system is imported and the absence of technical man uals, list of components and information related to the operation of the system associ ated with the system. premature wear of some components, is causing a high number of corrective maintenances. With the development of a preventive maintenance plan, it is expected to reduce the number of corrective maintenances by increasing the avail ability of the system under study.