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  • The Occurrence of Robertsite in a Sedimentary Phosphate Ore …

    The Occurrence of Robertsite in a Sedimentary Phosphate Ore from Thailand - Volume 52 Issue 367. Skip to main content Accessibility help We use cookies to distinguish you from other users and to provide you with a better experience on our websites.

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  • Beneficiation of a Sedimentary Phosphate Ore by a …

    Apr 20, 2016· In China, direct-reverse flotation is proved to be applicable to most phosphate ores. However, because the ratio of froth product is generally high, current direct-reverse technology faces challenges in terms of high reagent …

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  • Beneficiation of a Sedimentary Phosphate Ore by a …

    Apr 20, 2016· The sedimentary phosphate ore sample used in this work was collected from Yihua Group Co., Ltd., Yichang, China. The results of chemical composition analysis and mineral composition are shown in Table 1 and Table …

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  • Review of the reagents used in the direct flotation of phosphate ores ...

    Dec 27, 2021· Different pH modifiers can be used in apatite flotation, including sodium hydroxide (NaOH) or sodium carbonate (Na 2 CO 3 ). When comparing the both reagents in the direct flotation of phosphate ore within the pH range 8-11, Abdel-khalek et al. ( 2014) indicated that NaOH is a suitable for the flotation of apatite.

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  • Rare earth elements in sedimentary phosphate deposits: Solution …

    Abstract. The critical role of rare earth elements (REEs), particularly heavy REEs (HREEs), in high-tech industries has created a surge in demand that is quickly outstripping known global …

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  • [PDF] Beneficiation of a Sedimentary Phosphate Ore by a …

    A new gravity and flotation combined process has been developed for the recovery of collophanite from sedimentary phosphate ore from the beneficiation plant of Hubei, China. In this …

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  • [PDF] Beneficiation of a Sedimentary Phosphate Ore by a …

    In China, direct-reverse flotation is proved to be applicable to most phosphate ores. However, because the ratio of froth product is generally high, current direct-reverse technology faces challenges in terms of high reagent consumptions and cost. A new gravity and flotation combined process has been developed for the recovery of collophanite from sedimentary phosphate …

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  • Phosphate Rock - USGS

    In 2020, phosphate rock ore was mined by five firms at 10 mines in four States and processed into an estimated 24 million tons of marketable product, valued at $1.7 billion, free on board (f.o.b.) mine. ... The largest sedimentary deposits are found in northern Africa, China, the Middle East, and the United States. Significant igneous ...

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  • Phosphate Rock - an overview | ScienceDirect Topics

    Rock phosphate. Rock phosphate is a naturally occurring ore of marine sedimentary origin. It may have a composition of 0-30-0, but the grade is noted as 0-3-0, since rock phosphate is …

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  • Beneficiation of a Sedimentary Phosphate Ore by a Combination …

    Apr 20, 2016· In China, direct-reverse flotation is proved to be applicable to most phosphate ores. However, because the ratio of froth product is generally high, current direct-reverse technology faces challenges in terms of high reagent consumptions and cost. A new gravity and flotation combined process has been developed for the recovery of collophanite from …

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  • WO2019089927A1 - Reagent scheme for sedimentary phosphate …

    A process of phosphate flotation comprising: pulping phosphate ore with water to about 55% to 75% solids to produce an ore slurry; conditioning the ore slurry with a new reagent scheme to produce a conditioned slurry; subjecting the conditioned slurry to flotation to produce an underflow and an overflow; and collecting the overflow as phosphate concentrate.

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  • Figure 3 from Beneficiation of a Sedimentary Phosphate Ore by a ...

    DOI: 10.3390/MIN6020038 Corpus ID: 17524246. Beneficiation of a Sedimentary Phosphate Ore by a Combination of Spiral Gravity and Direct-Reverse Flotation @article{Liu2016BeneficiationOA, title={Beneficiation of a Sedimentary Phosphate Ore by a Combination of Spiral Gravity and Direct-Reverse Flotation}, author={Xin Liu and Yimin Zhang …

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  • Mineral Resource of the Month: Phosphate Rock - EARTH …

    Jan 28, 2015· Phosphate rock deposits can be sedimentary or igneous, but more than 80 percent of the world's current production of phosphate rock is mined from sedimentary …

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  • The beneficiation method of phosphate rock,classification …

    Oct 18, 2022· Such mines are the phosphate mines with the greatest industrial value. Sedimentary rock type phosphate rock: It is the main type in all countries in the world. The reserves of this type of ore in my country account for 70% of the total reserves, mainly distributed in the central and southwestern regions.

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  • (PDF) Beneficiation of a Sedimentary Phosphate Ore …

    Apr 20, 2016· The sedimentary phosphate ore sample used in this work was collected fr om Y ihua Group Co., Ltd., Y ichang, China. The r esults of chemical composition analysis and mineral composition are shown.

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  • Phosphite ore deposits - SlideShare

    Nov 19, 2015· 6. Types of Phosphorite Deposits: Phosphate deposits are of three main types: 1) Igneous Phosphate Deposits 2) Biogenic (or Guano ; or Island) Deposits 3) Marine Sedimentary Phosphate Deposits 21 November 2015 Prof. Dr. H.Z. Harraz Presentation Phosphate Deposits 6 Economic and potentially economic phosphate deposits of the world …

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  • Phosphorite Ore Mining Solution - Mineral Processing

    Process advantages: can process ore of various properties. 1. Positive flotation can remove siliceous gangue from the ore, and can treat siliceous phosphorite and sedimentary metamorphic silicon-calcium apatite; 2. A single reverse flotation can remove calcium (magnesium) gangue, can deal with sedimentary calcium (magnesium) phosphate rock; 3.

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  • Phosphate Rock - USGS

    Some world reserves were reported only in terms of ore tonnage and grade. Phosphate rock resources occur principally as sedimentary marine phosphorites. The largest sedimentary …

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  • Rare earth elements in sedimentary phosphate deposits: Solution to …

    Nov 26, 2015· The critical role of rare earth elements (REEs), particularly heavy REEs (HREEs), in high-tech industries has created a surge in demand that is quickly outstripping known global supply and has triggered a worldwide scramble to discover new sources. The chemical analysis of 23 sedimentary phosphate deposits (phosphorites) in the United States demonstrates that …

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  • Phosphorite - Wikipedia

    Deposits which contain phosphate in quantity and concentration which are economic to mine as ore for their phosphate content are not particularly common. The two main sources for phosphate are guano, formed from or bat droppings, and rocks containing concentrations of the calcium phosphate mineral, apatite. As of 2006, the US is the world's leading producer and exporter of phosphate fertilizers, accou…

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  • Environmental impact of phosphate mining and …

    Figure 1 Mining and beneficiation of sedimentary (A) phosphate ore (B) Igneous phosphate ore 51. Association of toxic metals and radioactive elements in phosphate rock. ... Reclaimed basins backfilled with clay commonly are rich …

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  • Beneficiation of Phosphate Ore - Society for Mining, Metallurgy ...

    Jan 20, 2014· Beneficiation of Phosphate Ore examines various methods for processing phosphate rock, an important mineral commodity used in the production of phosphoric acid. ... Beneficiation of High-MgO Sedimentary Phosphate Ores; Beneficiation of Igneous Phosphate Ores; ISBN #: 978-0-87335-391-5: Pub. Date: 01/20/2014: Author: S. Komar Kawara and J.T ...

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  • Sedimentary: Phosphates | Request PDF - ResearchGate

    Dec 31, 2017· Phosphate ore slurry is a suspension of insoluble particles of phosphate rock, the primary raw material for fertilizer and phosphoric acid, in a continuous phase of water.

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  • Characterization and Separation Studies of a Fine …

    distribute in Yichang region. Over 88% of the phosphate ore resources in Yichang are medium- or low-grade phosphate ore, the average grade of P2O5 is 22.2%, and most ores are characterized as siliceous-calcareous phosphate ore [1]. To meet the requirement of fertilizer industry, phosphate ore should be enriched to near 30% P2O5 [2]. Thus, the ...

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  • Rare earth elements in sedimentary phosphate deposits: …

    The critical role of rare earth elements (REEs), particularly heavy REEs (HREEs), in high-tech industries has created a surge in demand that is quickly outstripping known global supply and has triggered a worldwide scramble to discover new sources. The chemical analysis of 23 sedimentary phosphate deposits (phosphorites) in the United States demonstrates that they …

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  • (PDF) PHOSPHITE ORE DEPOSITS - ResearchGate

    Oct 01, 2016· sedimentary, marine phosphate rock deposits, 15-20 % from igneous and weathered deposits, and only 1-2% from biogenic resources, largely and bat guano accumulations.

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  • The beneficiation method of phosphate rock,classification …

    Oct 18, 2022· Sedimentary rock type phosphate rock: It is the main type in all countries in the world. The reserves of this type of ore in my country account for 70% of the total reserves, …

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  • Direct flotation of low-grade Moroccan phosphate ores: a …

    Nov 23, 2020· Based on the mineralogy of Moroccan phosphate ore to be beneficiated, three pure natural specimens to be used in micro-flotation tests were collected from localities in Morocco: calcite, apatite pebbles, and quartz. ... Luo H, Xiao C, Zhou F, Ruan C (2017) Ambient temperature flotation of sedimentary phosphate ore using cottonseed oil as a ...

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  • Beneficiation of a Low-grade Phosphate Ore Using a Reverse …

    Aug 13, 2020· This work aimed to upgrade a low-grade sedimentary phosphate ore through attrition scrubbing/desliming and an anionic/cationic reverse flotation technique. The mineralogical and chemical examination showed that the sample contained low-grade apatite minerals (P 2 O 5 ~ 22.5%), and the main associated gangue minerals were gypsum and quartz. The ...

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  • Phosphorite - an overview | ScienceDirect Topics

    13.5.7.5 Flotation of Rock Phosphate Ore. Rock phosphate, the primary raw material for fertilizer and phosphoric acid, occurs as high-grade ore (+30% P 2 O 5 ), medium-grade ore (20%–30% P 2 O 5 ), and low-grade ore (15%–20% P 2 O 5 ). The very high-grade ore blends with medium-grade ore for direct sale. The high-grade ore is mined, crushed ...

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