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Escrubagem da bauxita de Paragominas - PA: Parte 1: influência de variáveis operacionais na desagrega??o da bauxita

DOI: 10.1590/S0370-44672012000200015

Keywords: scrubbing, bauxite, drum scrubber.

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Abstract:

the aim of this study was to investigate the bauxite scrubbing process on samples from miltonia 3, a vale operation in the state of pará, brazil. the experimental program included the design of a standard laboratory test, from which parameters were derived for predicting the operation of a scrubber in steady state conditions. three main variables were selected for the laboratory experimental program using the factorial design technique. these were load fraction, residence time and rotation speed. the amount of fines was determined through screening both the feed and the product of the scrubbing test. the former was considered to be a characteristic material, while the second was the dependent variable, i.e. the result of the scrubbing process. according to experiments, the load fraction was the most important variable for the scrubbing process.

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