Estudo em escala laboratorial da degradabilidade do amil xantato de potássio

Abstract

The Sossego Mine is located about 37 km from the town of Canaã of Carajás, in Pará State. The copper found in this region is predominantly calcopirítico and concentrated by flotation for subsequent hydrometallurgical treatment. The project has two pits, processing plant, storage of waste and a tailings dam. The plant, in turn, is composed mainly of crushing operations, comminution, classification, flotation, regrind, thickening and filtering. The control additions of reagents is the most important part of the flotation. The relevance of the performance of the reagents on the efficiency of the process is shown indispensable. In this paper we present a study on the degradation of potassium amyl xanthate, classified as a collector used in flotation of copper ore, a function of time. Following this reasoning, samples were collected from the feeding of the flotation process plant with the Sossego Mine for the testing of flotation in the UFPA in Maraba. From the tests of degradability of the collector and flotation and also through the XRD and XRF analyzes, we observed the decomposition of potassium amyl xanthate with time and its influence on the yield of the flotation process. The present study suggests a closer look at industrial scale, because contrary to the procedure for disposal of reagents, perhaps these can be used for a shorter period of time, compared to the current used resulting in lower costs with these chemicals.