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You choose the topic - Research Paper Example obsolescent state elements are not high-flown as suggested by the name but are abundant in the humanitys crust even more than some metals (see table 1). However, they are dispersed and their concentration on the earths crust is very low and therefore they cannot be easily exploited. In addition, each rare earth deposit is unique and contains antithetical ore bodies which contains several rare earth elements in varying proportions. Rare earth elements do not occur naturally in elemental state as nigh metallic elements but are found in a large number of minerals types including halides, oxides, carbonate, phosphate and silicate (Eriksson and Olsson 5). In this project we want to address ore processing as one of the aspects of chemical process of obtaining rare earths function the naturally occurring ores.Beneficiation is the second step of mining after the ore is removed from the ground. Beneficiation process is separate into two st eps i.e. physiologic beneficiation and chemical beneficiation. Chemical beneficiation is applied after the physical beneficiation. Depending on the composition of the ore, different chemical techniques can be applied to separate the rare earth elements from other minerals contained in the ore. There are various types of ore bodies which include monazite, euxenite, gadolinite, xenotime, bastnasite, and Elliot lake uranium (Gupta and Krishnamurthy149). Different ore bodies have different compositions and hence different chemical beneficiation processes.There are two different chemical beneficiation ways of obtaining rare earth elements from monazite ore. This difference comes from the fact that either sulphuric acid or hydrated oxide can be used to first attack the ore (Gupta and Krishnamurthy 149).Acid treatment. In this treatment (see fig.1), concentrated sulphuric acid is used to heat the monazite sand up to a temperature of between 120 and 150C ( Bongaerts 67). Both thorium and