SciELO - Scientific Electronic Library Online

 
vol.65 issue2Mix grinding simulation by artificial neural networkGrade variability analysis and its use in mine planning author indexsubject indexarticles search
Home Pagealphabetic serial listing  

Rem: Revista Escola de Minas

Print version ISSN 0370-4467

Abstract

COSTA, Jaime Henrique Barbosa da  and  DELBONI JUNIOR, Homero. Scrubbing process of the Miltonia 3 Bauxite - Part 1: influence of operating variables on bauxite disintegration. Rem: Rev. Esc. Minas [online]. 2012, vol.65, n.2, pp. 257-262. ISSN 0370-4467.  http://dx.doi.org/10.1590/S0370-44672012000200015.

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.

Keywords : Scrubbing; bauxite; drum scrubber.

        · abstract in Portuguese     · text in Portuguese     · pdf in Portuguese