In the direct flotation separation process between apatite and quartz, anionic collectors interact with the surface Ca 2+ ions of apatite, creating chemical bonds and adsorbing on apatite surface, thereby increasing the hydrophobic characteristics of the apatite surface [15]. As a result, the apatite particles with strong surface ...

The application of nanobubbles through flotation of coarse apatite tailings evidently improved the process' metallurgical responses compared to flotation by conventional bubbles only. The results indicated that nanobubble …

Phosphate rock is the main raw material for manufacturing the phosphorous-based fertilizers and chemicals. Phosphate rock is primarily composed of the apatite group that contains variable percentage of P 2 O 5 in a calcium matrix with gangue minerals [1].Most of phosphate rock minerals are of low P 2 O 5 grade in nature, which demands some beneficiation …

This article proposes a flotation circuit to recover apatite from tailings generated by mining in Chile, based on laboratory tests and using the "Split Factor" method. The iron tailings were characterized by granulometry, …

Global demand and consumption of rare earth elements and compounds have led to increasing research to further our understanding of their beneficiation and recovery. Monazite is the second-most important rare earth-bearing mineral that can be exploited. In this study, the surface chemistry of monazite in terms of zeta potential, adsorption density, and flotation …

The results presented in this work demonstrate that the reject from the phosphate concentration process of Bunge Brazil SA, which shows a concentration of 9.52 wt.% P 2 O 5, …

The disadvantage of this method is that it gives positive results on carbonate ore, in which dolomite and a high apatite content prevail (15-17%). With ore flotation, which contains, in addition to dolomite, 32% phlogonite, 16% amphibole and little apatite (9%), the selectivity of the process is not achieved.

determined. Apatite, ilmenite, quartz, rutile, and zircon are minerals that frequently occur with monazite among other minerals. Hence they were chosen as gangue minerals in this study. The Iso-Electric Point (IEP) of monazite, apatite, ilmenite, quartz, rutile, and zircon are 5.3, 8.7, 3.8, 3.4, 6.3, and 5.1 respectively.

Surface Chemistry and Flotation Behavior of Monazite, Apatite, Ilmenite, Quartz, Rutile, and Zircon with Octanohydroxamic Acid. January 2017 Journal of Sustainable Metallurgy 3(1):62-72

Findings. Reverse flotation double stage process was applied on two classes of phosphate ores (C1: 40–250 and C2: 250–500 m). The samples are constituted by phosphatic elements (apatite), cemented by a mixture of a great amount of dolomite with low amounts of quartz, clay and calcite.

Apatite mined from Eppawala (Eppawala Rock Phosphate-ERP) cannot be directly used as a fertilizer for annual crops such as paddy and vegetables because of its low water solubility.

An increase in the concentration of these contaminating ions in process water used in apatite flotation strongly decreased the apatite. Author contributions. All authors whose names are listed in this manuscript have contributed significantly to the work. The conception and design of the study has been done by Marcos A.S. Barrozo, Fabiano ...

If Pb-BHA present good collecting ability and fluoride ions do not depress apatite, a flotation separation of apatite and calcite may be achieved by combining Pb-BHA coordination …

In this work, GJBW, a fatty acid-based agent, was used as an efficient collector to separate dolomite from apatite to achieve high-purity apatite. The flotation performance of dolomite and apatite in the phosphate (H 3 PO 4) …

The main factors affecting the flotation process include ore properties (mineral composition, size distribution, ... which is exactly one of the reasons for non-selective floatation of slime. ... An apatite concentrator added a double-outlet device to an independent 5 m 3 flotation machine in the production flow. The semi-industrial research on ...

The apatite recovery of each flotation test was calculated by Eq. (2). R(%) = MF xap,F × 100 MA xap,A (2) where R is the apatite recovery, MA is the mass (g) fed into the column, MF is the mass (g) of the floated fraction, xap,A is the P2 O5 content of the feed, and xap,F is the P2 O5 content of the concentrate.

The effects of Ca²⁺, Mg²⁺, Al³⁺, and Fe³⁺ on the flotation behaviors of apatite, dolomite and quartz were investigated through a micro-flotation test, and the influence of calcium ions ...

Flotation process is the generic terms of the operations when slurry flows through, including grinding, classification, slurry mixing, and roughing, concentration, and scavenging operations in flotation. ... malachite, rare earth minerals, and uranium ore; nonmetallic minerals: apatite, fluorite, mica, graphite, sulfur, feldspar, barite ...

In the flotation separation process of apatite and dolomite, the purpose of adding the collector is to make it adsorbed on the surface of dolomite, enhance its surface hydrophobicity and float it.

However, applying the process circuit developed by the Center for the Development of Nuclear Technology (CDTN) without separation into coarse and fine streams, involving bulk flotation of calcite and apatite followed by apatite flotation using phosphoric acid as depressant, from a sample containing 15.8% P 2 O 5 and 24.4% calcite, led to a ...

The highest flotation selectivity of apatite was obtained with Flotol-7,9 collector, the main operating component of which are 1-oxyalkylidene-1,1-diphosphonic acids. ... floatation process used in magnetite mining Heavy media separation using magnetite and cyclones is used by two operations mining the Esterhazy member. This process produces a ...

Calcite Flotation The effects of apatite and calcite supernatants on calcite flotation is to depress the flotation markedly in the neutral to alkaline pH (pH < 13) range. A comparison of the …

Given that particle and bubble size, as well as their surface properties, are pivotal in froth flotation, surfactants have been extensively employed due to their impact on bubble size and froth stabilization. This study aimed to investigate the influence of surfactants on the performance of apatite flotation in column. Three different categories of surfactants were …

Sinking is just the opposite process of floatation which means the tendency of an object to go deep down to the lower levels of the fluid. The phenomenon of floatation totally depends on the density of the object placed in the fluid and the density of the fluid in which it is placed. A ship can only float or sail on the sea if its density is ...

The Phalaborwa world-class phosphate deposit (South Africa) is hosted by a Paleoproterozoic alkaline complex mainly composed of phoscorite, carbonatite, pyroxenitic rocks, and subordinate fenite. In addition, syenite and trachyte occur in numerous satellite bodies. New petrological and in-situ geochemical data along with O and Sr isotope data obtained on apatite …

This difference in reagent ratio is directly related to the surface tension of the bulk, making the apatite more or less hydrophobic, directly affecting the flotation performance. ... Applying 10% of L.1210 on an industrial scale, a more stable industrial process was observed to the oscillations of the processing plant, corroborating that by ...

In this work, selective flotation separation of microfine apatite and chlorite was achieved by using sodium oleate (NaOL) as a collector with a low dosage of acidified sodium silicate (ASS) as a depressant. The optimum ratio of sodium silicate to sulfuric acid for ASS was 5:3, and a good separation effect was also achieved in the mixed ore system. Compared to …

In this study, sedimentary (SD), igneous (IG), and sedimentary metamorphic (SM) apatite minerals are chosen as raw materials to investigate the relationship between the …

Phosphate ore is the dominating natural resource for the production of fertilizers and phosphorous chemical products. Flotation is the most widely employed technique to enrich apatite and remove the impurities for the separation of the phosphate ore. The flotation reagents play an important role in this efficient separation of phosphate ores. In the last few decades, …

In this study, there is 1.42% P2O5 in the P-containing V-Ti magnetite tailings in Miyi Region of China, with the valuable minerals mainly including apatite, and aluminosilicate minerals as the ...