phosphate minerals in goethite ores
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phosphate minerals in goethite ores

Characterisation of phosphorus and other impurities

2019-11-1  The goethite forms during supergene metasomatic enrichment of BIF-derived ores and the phosphorus is typically associated in goethite with other impurity elements such as Si and Al. The current study focusses on determining the distribution and association of phosphorus within goethite present in a high-P Brockman type iron ore from the Pilbara region of Western Australia.

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Bio-extraction of phosphorus from goethite ore with

2019-9-1  Further, the mechanism of bio-extraction of goethite ore was proved to be the phosphorus uptake for bacterial cell growth rather than the apatite dissolution, as phosphorus mainly embedded within the goethite matrix and not soluble in acids (Zhang et al., submitted for publication). So these produced organic acids are of no importance with respect to bio-extraction of phosphorus from goethite ores.

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Evidence for Surface Precipitation of Phosphate on

2019-5-25  Recent studies have suggested that the interaction between phosphate and goethite includes ternary adsorption/surface precipitation as well as surface complex formation. The ternary adsorption/surface precipitation process envisioned involves the dissolution of the goethite crystal and subsequent adsorption of iron on the surface-bound phosphate. Further evidence to support the

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Minerals Free Full-Text Interfacial Precipitation of ...

An obvious decrease in the dissolved phosphate concentration in the soil solution is due to increased phosphate adsorption and subsequent precipitation on goethite or hematite. The bioavailability of phosphate will be rapidly reduced at high salt (AlCl 3) concentrations due to phosphate

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Detection of carbonate, phosphate minerals and ...

2021-4-5  Raman spectra of apatite, goethite, hematite and sulfides were also obtained. The association between cyanobacteria and the phosphates has been noted. Cyanobacteria exhibited Raman modes at 1520–1517 cm −1 which are characteristic of the pre-resonance spectra of carotenoids, namely the ν 1 mode of the C C bond and the ν 2 mode of C C bond in conjugation, respectively.

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Minerals Free Full-Text Minerals of Rare Earth ...

LREE-phosphate is included in ferruginous ooids, peloids, and oncoids and forms a consistent mineral association with Fe-hydroxides (goethite and its hydrated amorphous derivatives) and Fe-rich layered silicates (Fe-illite-smectite, chamosite, berthierine).

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‘Gorceixite’, a Ba-Al phosphate mineral, from Mn-ores

2019-6-13  These manganese ores are of low-grade type and contain appreciable amount of phosphorous (> 1%). Due to the phosphorus contents, the ores are unsuitable for use in metallurgical industries. Apatite was reported to be the sole contributor of phosphorous in these manganese ores (Acharya et al. 1994).

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XANES Investigation of Phosphate Sorption in Single

2005-2-22  Phosphate sorption on Fe- and Al-oxide minerals helps regulate the solubility and mobility of P in the environment. The objective of this study was to characterize phosphate adsorption and precipitation in single and binary systems of Fe- and Al-oxide minerals. Varying concentrations of phosphate were reacted for 42 h in aqueous suspensions containing goethite, ferrihydrite, boehmite,

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Phosphate Minerals - an overview ScienceDirect Topics

Phosphate rock (phosphorite or rock phosphate) contains 15–20% phosphate bearing minerals. The phosphorus is present as fluorapatite—Ca 5 (PO 4) 3 F—or as hydroxyapatite (apatite)—Ca 5 (PO 4) 3 OH. Another source is dissolved phosphate minerals from igneous and metamorphic rocks.

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Interaction Between Mineral Phases in a Goethitic Iron

2021-2-12  The major mineral phases in the goethitic ore include goethite, hydrohematite, and quartz. Goethite phase containing finely distributed quartz forms the matrix of the goethitic ore. Other minerals are present in the matrix as core particles, including quartz, hydrohematite, quartz-dispersed goethite, and quartz-dispersed hydrohematite. (2)

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Characterisation of phosphorus and other impurities

The goethite forms during supergene metaso-matic enrichment of BIF-derived ores and the phosphorus is typically associated in goethite with other impurity elements such as Si and Al.

More

Evidence for Surface Precipitation of Phosphate on

2019-5-25  Recent studies have suggested that the interaction between phosphate and goethite includes ternary adsorption/surface precipitation as well as surface complex formation. The ternary adsorption/surface precipitation process envisioned involves the dissolution of the goethite crystal and subsequent adsorption of iron on the surface-bound phosphate. Further evidence to support the

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Developments in chemical separation of iron ore ...

2015-1-1  Phosphorus can occur as phosphorus-containing minerals (e.g., apatite) and being finely dispersed in hematite in oolitic ironstones or in goethite in goethite–hematite banded iron formation ores. An acid leach can remove phosphate present as discrete minerals and

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‘Gorceixite’, a Ba-Al phosphate mineral, from Mn-ores

2019-6-13  Gorceixite, a rare Ba-Al phosphate mineral that belongs to the alunite supergroup, has a simplified formula DG 3 (TO 4) 2 (OH, H 2 O) 6. For gorceixite, the D-site is represented by Ba, G-site by Al and T-site is dominated by P (Dzikowski et al. 2006).Gorceixite forms a continuous series of solid solutions with related minerals including arsenogorceixite, goyazite, arsenogoyazite ...

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Interaction Between Mineral Phases in a Goethitic Iron

2021-2-12  The interaction between the minerals in a goethitic iron ore (goethite, quartz, hydrohematite, quartz-dispersed hydrohematite, and quartz-dispersed goethite) and pure flux materials (CaO, MgO, SiO2, and Al2O3) was studied by heating ore–flux interaction couples to different temperatures under 0.5 kPa O2 partial pressure when the samples were loaded into the hot zone of a furnace preheated to ...

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Main minerals of abnormally high-grade ores of the

2015-6-1  The highest-grade ores are natural Nb and REE concentrates. The total REE content in some layers is > 10%. The morphologic features of the highest-grade phosphate ores from the northern part of the Burannyi site were studied. The ore-forming minerals belong to the pyrochlore group, crandallite group (goyazite), and monazite-Ce.

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XANES Investigation of Phosphate Sorption in Single

2005-2-22  Phosphate sorption on Fe- and Al-oxide minerals helps regulate the solubility and mobility of P in the environment. The objective of this study was to characterize phosphate adsorption and precipitation in single and binary systems of Fe- and Al-oxide minerals. Varying concentrations of phosphate were reacted for 42 h in aqueous suspensions containing goethite, ferrihydrite, boehmite,

More

(PDF) Concentration of phosphate ore by flotation

The sedimentary phosphate ores having carbonate-apatite as the main phosphate minerals and containing carbonates (calcite and/or dolomite) represent a challenge in the field of phosphate ...

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Mineralogical and Technological Aspects of

2019-8-28  Abstract. The article studies the mineralogical features of phosphate ores. In the conditions of declining industrial reserves of apatite-containing ores, issues of a more comprehensive and in-depth study of the mineral and material composition, as well as the improvement of existing technologies for the processing of this type of raw material, become topical.

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Phosphate Minerals - an overview ScienceDirect Topics

J.P. Attfield, in Encyclopedia of Materials: Science and Technology, 2001 4.9 Minerals. Several hundred phosphate minerals are known, virtually all of which are orthophosphates. The important mineral apatite, ideally Ca 5 (PO 4) 3 X (X=F, Cl, OH), is found in igneous pegmatite rocks and hydrothermal veins. Poorly crystalline or amorphous phosphorite sediments made from the hard remains of ...

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Characterisation of phosphorus and other impurities

The goethite forms during supergene metaso-matic enrichment of BIF-derived ores and the phosphorus is typically associated in goethite with other impurity elements such as Si and Al.

More

Evidence for Surface Precipitation of Phosphate on

2019-5-25  Recent studies have suggested that the interaction between phosphate and goethite includes ternary adsorption/surface precipitation as well as surface complex formation. The ternary adsorption/surface precipitation process envisioned involves the dissolution of the goethite crystal and subsequent adsorption of iron on the surface-bound phosphate. Further evidence to support the

More

Association between phosphorus and iron oxides in ...

2010-12-17  phosphate. On the other hand, the association between phosphorus and goethite was clearly observed in the other samples. Keywords: Manganese ore, phosphorus, selective dissolution introdu C tion Manganese ores are extensively used in industry, and over 40 million tons are annually produced. Most of the manganese

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XANES Investigation of Phosphate Sorption in Single

2005-2-22  Phosphate sorption on Fe- and Al-oxide minerals helps regulate the solubility and mobility of P in the environment. The objective of this study was to characterize phosphate adsorption and precipitation in single and binary systems of Fe- and Al-oxide minerals. Varying concentrations of phosphate were reacted for 42 h in aqueous suspensions containing goethite, ferrihydrite, boehmite,

More

(PDF) Concentration of phosphate ore by flotation

The sedimentary phosphate ores having carbonate-apatite as the main phosphate minerals and containing carbonates (calcite and/or dolomite) represent a challenge in the field of phosphate ...

More

Mineralogical and Technological Aspects of

2019-8-28  Abstract. The article studies the mineralogical features of phosphate ores. In the conditions of declining industrial reserves of apatite-containing ores, issues of a more comprehensive and in-depth study of the mineral and material composition, as well as the improvement of existing technologies for the processing of this type of raw material, become topical.

More

Main minerals of abnormally high-grade ores of the

2015-6-1  The highest-grade ores are natural Nb and REE concentrates. The total REE content in some layers is > 10%. The morphologic features of the highest-grade phosphate ores from the northern part of the Burannyi site were studied. The ore-forming minerals belong to the pyrochlore group, crandallite group (goyazite), and monazite-Ce.

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Phosphate Minerals - University of Wisconsin–Madison

2018-12-28  Phosphate minerals comprise only a fractional percentage of the soil mass, perhaps averaging 0.02% or so, which impedes their direct identification by optical microscopy and x-ray analysis unless their concentration has been locally increased by addition of phosphate fertilizers. In some cases, beneficiation of native phosphate minerals is ...

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Mineralogy, Microstructure, and Chemical

2010-1-12  The Joda–Barbil region of the Jamda–Koira valley is one of the most important sources of iron ores in India. The mineralogy, texture, and chemical composition of iron ore of the region have been analyzed to understand the presence of different types of goethite and their compositional variation with respect to Fe, Al 2 O 3, SiO 2, and P that are essential for upgrading the ores for iron ...

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9 Ore Deposits and Economic Minerals – Mineralogy

Ores and ore minerals vary greatly in quality. Ideal ores contain 100% ore minerals. Such ores do not exist, but some come close. Ideal ore minerals contain 100% of the commodity of interest. Native copper, for example, is an ideal copper ore mineral. Ideal ore minerals are, however, uncommon.

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