外文翻译---浅淡铝土矿生物选矿.docx

附录A Research Advances in the Biobeneficiation of Bauxites Abstract: The recent research advances and current trends in the bio-beneficiation of bauxite were briefly outlined in this paper. Some suggestions for promoting research work in this field were proposed. Keywords: Bauxite; Biotechnology Beneficiation Bauxite according to their use can be divided into metallurgical grade production of alumina, refractory grade abrasive grade, chemical products level four categories. With the high quality bauxite resources are increasingly scarce, bauxite beneficiation has been widely accepted. Over the years, the bauxite beneficiation impurity (desilication, de-ilmenite) and the physical method and chemical method. For example, the re-election, magnetic separation, flotation, chlorine chloride, hydrochloric acid leaching. As the bauxite mineral crystallization in small scattered and disseminated with the gangue, dissociation degree of difference between the impurity effect, using physical methods is not ideal. Chemical impurity satisfactory, but because of the high cost and environmental pollution, which is generally not used. The physical method and chemical France impurity defects, study of foreign the bauxite biological dressing to carry out more active. The basic principles of a bauxite biological dressing Biological beneficiation biology, chemistry, and other engineering disciplines in the field of mineral processing applications. Biological beneficiation of the 1950s in the United States with biological leaching of copper in copper and 1960s, Canada successfully leaching of uranium ores, scientists around the world have been committed with great enthusiasm to carry out low-grade, finely dispersed refractory ore study. Biological beneficiation of bauxite is the use of certain microorganisms or their metabolites and bauxite interaction, resulting in oxidation, reduction, dissolution, adsorption, reaction and thus removal of the unwanted components in the ore or recover th