Avaliação da eficiência e produtividade dos fornos da empresa MIDAL CABLES na Província de Maputo, e seus impactos na qualidade dos produtos

Abstract

Reducing production costs by eliminating waste and improving process control is crucial for enhancing productivity and efficiency within organizations. This research project primarily aims to evaluate the productivity and efficiency of the furnaces at Midal Cables Lda, and their impact on product quality and the environment. The goal is to identify potential causes of low productivity and efficiency, the production of non-conforming products leading to diminished customer expectations in terms of quality, and the environmental impacts resulting from the process. In this context, routine monitoring of the production process in the study area was conducted over a period of 45 days. The process of producing aluminum rods was examined. The quantity of raw materials received and the products produced were analyzed, enabling the calculation of productivity and efficiency. The mass balance of the solid streams was then analyzed to determine the quantity of slag formed and the relationship between productivity and efficiency. Finally, the chemical characterization of the aluminum slag was performed using the X-ray Fluorescence Spectrometry (XRF) method on samples 1 and 2. The productivity results showed that monitoring II surpassed monitoring I, yielding 527,845 kg and 369,925 kg respectively. The efficiencies obtained were 58.78% and 66.76% in monitoring I and II respectively. A total of 96,136 kg of slag was obtained in monitoring I and 29,865 kg in monitoring II, concluding that higher productivity leads to higher efficiency and less slather results obtained in sample 1 showed that elements such as Iron (Fe) 0.265%, Silicon (Si) 0.025%, and Boron (B) 0.078% were above the optimum composition. The results of sample 2 showed that Silicon (Si) 0.411% and Iron (Fe) 0.275% were also above the expected levels, which directly affected the production of non-conforming products. The observed environmental impacts include the accumulation of contaminants and soil acidification, groundwater contamination, and the release of CO, NO x , SO 2 , and HC. These are responsible for the generation of acid rain, smoke, exacerbation of the greenhouse effect, and atmospheric pollution.