Double reverse flotation of a very low grade sedimentary phosphate rock, rich in carbonate and silicate

Mohammadkhani, Mina; Noaparast, Mohammad; Shafaei, Sied Ziaedin; Amini, A.; Amini, E.; Abdollahi, Hadi

doi:10.1016/j.minpro.2011.06.001

Cited by 109 publications

(46 citation statements)

References 12 publications

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“…There are two main raw materials used for phosphorus fertilizers production: phosphorite (sedimentary rock) and apatite rock (volcanic sediment) [6]. Processes responsible for the formation of phosphorus ore-phosphogenesis are based on integral physical phenomena and chemical reactions, that last for thousands of years [4].…”

Section: Introductionmentioning

confidence: 99%

Valorization of Bones to Liquid Phosphorus Fertilizer by Microbial Solubilization

Saeid

Labuda

Chojnacka

et al. 2013

Waste Biomass Valor

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Problem of decreasing resources of phosphate rock for phosphorus fertilizers production, can be mitigated by biological degradation of low quality substrates, performed by bacterial species able to produce mineral and low molecular organic acids. It was found that Bacillus megaterium was able to solubilize phosphorus incorporated with organic matter-biogenic apatite-bones. Using the microbial treatment (by acids produced by microorganisms) it was possible to produce liquid phosphorus fertilizers. At the same time the problem with utilization of noxious wastes can be solved. Two materials were used: bones and phosphorite. Two times higher solubilization factor for bones were achieved when compare to phosphorite. It was possible to obtain the organic liquid fertilizer with the content of P 2 O 5 0.09 % (m/m). It is necessary to evaluate the utilitarian properties of obtained fertilizer in the germination test.

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Section: Introductionmentioning

confidence: 99%

Valorization of Bones to Liquid Phosphorus Fertilizer by Microbial Solubilization

Saeid

Labuda

Chojnacka

et al. 2013

Waste Biomass Valor

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“…In the meantime, there are two typical flotation processes for the removal of silicate gangues from phosphate ores with different types of collectors. A reverse flotation process with cationic collectors is used to float silicate gangue minerals, while the phosphate minerals are depressed in a weak acidic medium environment [8]. However, this method always generates a froth concentrate with a high viscosity caused by the common cationic collectors, resulting in the difficulty of filtrating the float products [9,10].…”

Section: Introductionmentioning

confidence: 99%

Ambient Temperature Flotation of Sedimentary Phosphate Ore Using Cottonseed Oil as a Collector

et al. 2017

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Abstract:The mid-low grade sedimentary phosphate ore, abundant in silicate and carbonate gangue minerals, exhibits a poor processability. It is conventionally enriched using high temperature flotation to remove silicate gangues with fatty acid as a collector. Cottonseed oil has been proved to be an efficient collector for achieving ambient temperature flotation of the sedimentary phosphate ore used in this study. Flotation kinetics was investigated to ascertain the excellent collecting performance of cottonseed oil, as compared with oleic acid, and the phosphate flotation fitted well with the first-order flotation model. Based on the analysis of flotation reagent effect on the direct flotation process using the response surface methodology (RSM), a closed circuit of direct-reverse flotation for stepwise removing silicate and carbonate gangues from the sedimentary phosphate ore was established. Consequently, a required high quality of phosphate concentrate containing 30.16% P 2 O 5 was obtained, with a recovery of 90.90%. Scanning electron microscopy (SEM) and X-ray diffraction analysis (XRD) of the flotation products confirmed that the majority of silicate and carbonate gangues were effectively removed from the concentrate products.

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“…About 95% of the phosphate produced as a raw material is consumed in the fertilizer industry. A large proportion of the world's phosphate reserves are sedimentary deposits containing a considerable amount of carbonate minerals, which cannot satisfy the industrial requirements for phosphates to produce superphosphates and phosphoric acid [1]. Although many measures were investigated for beneficiating phosphate minerals, flotation is energy saving and low cost in alumina production.…”

Section: Introductionmentioning

confidence: 99%

Novel Sulfo Fatty Acid for Flotation Separation of Carbonates Against Phosphate Rocks

Liang¹,

Yang²,

Pan³

2017

Topics in Civil, Environmental &Amp; Building Engineering (TICEBE)

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We designed and synthesized a novel sulfo fatty acid (SSA) which demonstrated high selectivity and strong collecting capacity for the beneficiation of phosphate ore by reverse flotation. The SSA collector was investigated to float single minerals and real phosphate ore. The collecting performance on minerals was interpreted by means of adsorption amount measurement, zeta potential measurement, scanning electron microscopy (SEM) and energy dispersive X-ray spectroscopy (EDX) analysis. The appropriate pH value for the single minerals flotation was close to pH 5 at which dolomite presents quite good floatability while apatite exhibit very poor floatability. The performance of SSA and oleic acid used for the real phosphate ore flotation was compared, and the critical factors of phosphate ore flotation were investigated. It was found that the novel SSA achieved superior results, causing dolomite adsorbing reagent in larger amount than apatite.

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Double reverse flotation of a very low grade sedimentary phosphate rock, rich in carbonate and silicate

Cited by 109 publications

References 12 publications

Valorization of Bones to Liquid Phosphorus Fertilizer by Microbial Solubilization

Valorization of Bones to Liquid Phosphorus Fertilizer by Microbial Solubilization

Ambient Temperature Flotation of Sedimentary Phosphate Ore Using Cottonseed Oil as a Collector

Novel Sulfo Fatty Acid for Flotation Separation of Carbonates Against Phosphate Rocks

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