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magnesium separation from dolomite phosphate

Magnesium Separation from Dolomitic Phosphate by Acid

Magnesium Separation from Dolomitic Phosphate by Acid Leaching. 01-113-138Final. ... reported on in this paper treats the phosphate rock with a weak acid to solubilize the dolomite in the rock so that it can be removed as a solution. The magnesium can be recovered as a readily salable product that contributes to the economics of the process.

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Magnesium separation from dolomitic phosphate by

Our laboratory tests have demonstrated superior separation of magnesium from phosphate by a novel combination of 1) direct leaching with sulfuric acid, 2) accurate regulation of pH by automated control of acid flow, and 3) active removal of the carbon dioxide formed by acid reaction with carbonates.

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US5362460A - Magnesium separation from dolomitic

Process for dissolving unwanted magnesium from phosphate ores by leaching with dilute sulfuric acid at automatically controlled pH. Minerals so treated are more easily converted by the conventional "wet" process into phosphoric acid, and yield better quality phosphoric acid. Magnesium So leached is precipitated with lime or dolime in a second conventional processing

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SEPARATION OF DOLOMITE FROM THE SOUTH

2014-12-2  existence of dolomite, specifically magnesium, in Florida phosphate and to develop suitable techniques for separation of dolomite from apatite. Highlights of major accomplishments are briefly discussed below. Mineralogical Studies Quantitative X-ray diffraction analysis,combined with chemical analysis

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Preparation of magnesium hydroxide from leachate of ...

2014-2-1  1. Introduction. Magnesium in the form of dolomite constitutes a main impurity in sedimentary phosphate ores. Due to depletion of high-grade phosphate ore, the unexploited reserves of phosphate rock tend to contain less phosphate and more dolomitic carbonate (Zheng et al., 2001).The low-grade ores need beneficiation to be fit for subsequent processing.

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(PDF) Separation of dolomite from phosphate minerals by ...

PDF Commercial-grade dodecyl-N-carboxyethyl-N-hydroxyethyl-imidazoline, a new amphoteric surfactant, has been found to be a good collector for the...

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US2386027A - Method of separating magnesia from

US2386027A US519108A US51910844A US2386027A US 2386027 A US2386027 A US 2386027A US 519108 A US519108 A US 519108A US 51910844 A US51910844 A US 51910844A US 2386027 A US2386027 A US 2386027A Authority US United States Prior art keywords suspension dolomite magnesia oxides temperature Prior art date 1944-01-21 Legal

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Dolomite used in phosphate water treatment: Desorption ...

2019-5-1  Dolomite used in phosphate water treatment: Desorption processes, recovery, reuse and final disposition ... (a sedimentary rock composed mainly of calcium and magnesium carbonates), is an efficient adsorbent of phosphate from aqueous solutions containing other contaminants (Boeykens et al., 2017).

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Chemical processing of dolomite associated with the ...

2015-12-27  The process of production of magnesium sulfate from dolomite ore involves the following steps: ¾ Leaching the ore with sulfuric acid and purification of the magnesium sulfate from dissolved impurities ¾ Separation of precipitated impurities from magnesium sulfate solution ¾ Concentration and crystallization of magnesium sulfate solution

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Separating Magnesium And Calcium From Each Other (e.g ...

2018-5-9  Search for Separating Magnesium And Calcium From Each Other (e.g., Treating Dolomite, Etc.) Patents and Patent Applications (Class 423/169) Filed with the USPTO

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The Florida Institute of Phosphate Research was created

The Florida Institute of Phosphate Research was created in 1978 by the Florida Legislature (Chapter 378.101, Florida Statutes) and empowered to conduct research supportive to the

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"Separation of Dolomite from Phosphate at Low Cost and ...

Magnesium (MgO) in phosphate rock causes numerous problems in the phosphoric acid manufacturing process, including reducing filtration capacity, increasing sulfuric acid consumption, and making it difficult to meet product grade. MgO-containing minerals are fully dissolved and usually coexist in phosphoric acid by acid hydrolysis reaction to form Mg(H2PO4)2.

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Dolomite flotation of high magnesium phosphate ores

2020-10-13  magnesium phosphate ore samples containing 3.3% and 1.5% MgO. The test results showed that the surfactant DP could improve dolomite flotation at low dosages, and DSS1 could enhance the separation of dolomite from phosphate by improving both

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Reverse Flotation of Magnesite by Dodecyl Phosphate

Since phosphate and calcium ions interact stronger than magnesium ions, phosphate is a good depressant of the flotation separation process of magnesite and dolomite [13, 23,24]. ...

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(PDF) Separation of dolomite from phosphate minerals by ...

PDF Commercial-grade dodecyl-N-carboxyethyl-N-hydroxyethyl-imidazoline, a new amphoteric surfactant, has been found to be a good collector for the...

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A Review of Flotation Separation of Mg Carbonates ...

The separation of carbonate gangue minerals, such as dolomite and calcite, from phosphate ores, like apatite, is still a notorious problem in mineral processing (Wonyen et al., 2018; Yehia et al ...

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US2386027A - Method of separating magnesia from

US2386027A US519108A US51910844A US2386027A US 2386027 A US2386027 A US 2386027A US 519108 A US519108 A US 519108A US 51910844 A US51910844 A US 51910844A US 2386027 A US2386027 A US 2386027A Authority US United States Prior art keywords suspension dolomite magnesia oxides temperature Prior art date 1944-01-21 Legal

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Chemical processing of dolomite associated with the ...

2015-12-27  The process of production of magnesium sulfate from dolomite ore involves the following steps: ¾ Leaching the ore with sulfuric acid and purification of the magnesium sulfate from dissolved impurities ¾ Separation of precipitated impurities from magnesium sulfate solution ¾ Concentration and crystallization of magnesium sulfate solution

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DOLOMITE EXTRACTION FROM PHOSPHATE PEBBLE BY

phosphate deposits, south of those presently mined, are troublesome because of the problems caused by enhanced magnesium concentrations in the production of phosphoric acid through wet methods. The removal of dolomite from phosphate ore was studied using a buffer system, i.e., mixture of ammonium sulfate and carbonic acid.

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Separating Magnesium And Calcium From Each Other (e.g ...

2018-5-9  Search for Separating Magnesium And Calcium From Each Other (e.g., Treating Dolomite, Etc.) Patents and Patent Applications (Class 423/169) Filed with the USPTO

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The Florida Institute of Phosphate Research was created

The Florida Institute of Phosphate Research was created in 1978 by the Florida Legislature (Chapter 378.101, Florida Statutes) and empowered to conduct research supportive to the

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"Separation of Dolomite from Phosphate at Low Cost and ...

Magnesium (MgO) in phosphate rock causes numerous problems in the phosphoric acid manufacturing process, including reducing filtration capacity, increasing sulfuric acid consumption, and making it difficult to meet product grade. MgO-containing minerals are fully dissolved and usually coexist in phosphoric acid by acid hydrolysis reaction to form Mg(H2PO4)2.

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Dolomite flotation of high magnesium phosphate ores

The separation of dolomite from apatite has been recognized as one of the most difficult subjects in mineral processing due to the similarities in their physiochemical properties. In this study, selective surfactants were used with a fatty acid soap collector to improve the flotation performance of separating dolomite from high magnesium phosphate ores.

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Reverse Flotation of Magnesite by Dodecyl Phosphate

Since phosphate and calcium ions interact stronger than magnesium ions, phosphate is a good depressant of the flotation separation process of magnesite and dolomite [13, 23,24]. ...

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US2386027A - Method of separating magnesia from

US2386027A US519108A US51910844A US2386027A US 2386027 A US2386027 A US 2386027A US 519108 A US519108 A US 519108A US 51910844 A US51910844 A US 51910844A US 2386027 A US2386027 A US 2386027A Authority US United States Prior art keywords suspension dolomite magnesia oxides temperature Prior art date 1944-01-21 Legal

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Separating Magnesium And Calcium From Each Other (e.g ...

2018-5-9  Search for Separating Magnesium And Calcium From Each Other (e.g., Treating Dolomite, Etc.) Patents and Patent Applications (Class 423/169) Filed with the USPTO

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the Wettability of Apatite and Dolomite - MDPI

2020-2-29  the separation of dolomite from apatite for this kind of magnesium (calcium) phosphate ore, and an anionic collector, such as sodium oleate, is usually used in the acidic pulp for reverse flotation [1–3]. Flotation is a separation method based on the di erence of physical and chemical properties between valuable minerals and gangue minerals [4].

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Phosphate Rock Treatment for Waste Reduction

Separation of calcite and/or dolomite from phosphate rock by flotation is becoming the practice in several phosphate mining areas where higher carbonate contamination is encountered. In almost all cases, the phosphate rock must be ground to liberate the calcite and/or dolomite so that it can be separated from the phosphate rock.

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Preparation of high purity magnesium oxide from

2009-8-9  Preparation of magnesium oxide (MgO) from dolomite 261 RESULTS AND DISCUSSION . LEACHING . The effect of leaching time on the dissolution of dolomite was studied. The results are shown in Fig. 3. Clearly, the dissolution recovery increased with time, the initial dissolution rate of Ca. 2+ and Mg. 2+ being very rapid. The recovery reached 92 ...

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Minerals Free Full-Text Influence of Sodium Phosphate ...

2020-11-19  Since phosphate and calcium ions interact stronger than magnesium ions, phosphate is a good depressant of the flotation separation process of magnesite and dolomite [13,23,24]. The chain length of phosphate also has an important influence on the flotation separation of magnesite and dolomite.

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