Abstract
This paper presents the results of the beneficiation of a phosphorus-bearing mineral through selective flotation process. The chemical examination showed that the sample contain a low content of P2O5 12.5 % and significant amounts of rare earth elements (REE), %: yttrium - 0.01, lanthanum - 0.06, cerium - 0.09, neodymium - 0.03. The particle size distribution of the sample was performed, and each separated fraction was chemically analyzed. A detailed examination of the mineralog ical characteristics was conducted using automated mineral liberation analyzer (MLA). It has been shown that the apatite particles are mostly liberated in all fraction sizes. The maximum percentage of apatite polymineral aggregate was recorded in the grain size of -0.5 + 0.2 mm, mainly with nepheline and pyroxenes. The maximum percentage of apatite binary aggregate was noted in the grain size of -0.16 + 0.071 and -0.071 + 0.045 mm. Based on the obtained results, the size of the flotation feed was predetermined, which allowing the complete liberation of phosphorusbearing mineral (apatite) and avoiding over-grinding of the ore.
Highlights
Phosphorus-bearing minerals are widely used as raw materials in the production of fertilizers, and as a promising source for the extraction of rare earth elements (REE) [1,2]
The results showed that the content of aluminum, calcium and phosphorus oxides did not show significant variation in the size fractions (Al2O3 – from 14 to 16.06 %, CaO – from 12.92 to 16.88 % P2O5 – from 6.96 to 9.27 %)
The paper presents the results of a study of selective flotation enrichment of phosphorusbearing ores
Summary
Phosphorus-bearing minerals are widely used as raw materials in the production of fertilizers, and as a promising source for the extraction of rare earth elements (REE) [1,2]. Various types of reagents are used to change the surface properties of minerals [4]. The addition of chemical reagents during the grinding process makes it. Possible to increase the selectivity of flotation enrichment due to the continuous positive influence of these reagents on the newly created mineral surface [8,9]. A promising direction for research in this subject is selective disintegration using modern software to analyze the mineral liberation [10,11,12]. In this regard, increasing the flotation selectivity of Phosphorus-bearing minerals is very essential
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