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Mar 01, 2014 The article reports research findings on flotation of apatite from brazilite-apatite-magnetite ore by domestic and foreign manufacture reagents. The agents Phospholan PE65 and Arcomon SO exhibit higher selectivity as compared to saponified tall oil fatty acids. Download to read the full article text.
To elucidate how phosphoric acid H3PO4 as a depressant achieves selective separation of apatite and dolomite, the flotation response of these minerals was investigated using both single and ...
Atrac is seen to adsorb equally on apatite and magnetite, and the adsorption increased in the presence of calcium ions. The presence of water glass decreased the Atrac contact angle data on magnetite and also the flotation response demonstrating its role as magnetite depressant in flotation.
A process for beneficiating celestite, barite, scheelite, fluorite, calcite, magnetite, gypsum, anhydrite, and apatite is disclosed comprising froth floating a ground pulp conditioned with gangue depressant using tetrasodium N-1,2-dicarboxyethylN-octadecylsulfosuccinamate as collector.
May 19, 2021 A large apatite-iron tailings deposit is located north of Sweden in Kiruna and Malmberget, containing a substantial amount of P 2 O 5 48 from the previous magnetite recovery. Efforts are being made to ensure the efficient extraction of the minerals of interest with a minimum CO 2 footprint.
demonstrating its role as magnetite depressant in flotation. The presence of non-ionic surfactant enhanced the Atrac flota-tion of apatite with no flotation of magnetite. Bench-scale flotation tests showed that 50 of Atrac can be replaced with non-ionic collector without impairing the flotation results.
The observed flotation-depression by apatite supernatant was restored upon adding excess oleate further indicating that the depletion of oleate due to precipitation is indeed responsible for the decrease in flotation. 7. Flotation of apatite also was depressed by the supernatants of both calcite and apatite. 8.
In this paper, soluble starch has been studied as the depressant of hematite during flotation separation of apatite using sodium oleate as the collector. The interaction mechanism between the soluble starch and minerals hematite and apatite was studied with employment of Zeta-potential,
The process of claim 1 wherein the ore is apatite and the depressant is NaOH in an amount of about 0.5 lb. per ton. 5. The process of claim 1 wherein the concentrate obtained is repulped and subjected to further froth flotation with addition of suitable depressant, tetrasodium N-1,2-dicarboxyethyl-N
The apatite ore body at Beldih occurs as apatite-quartz-magnetite vein. Mineralogical examination indicated the presence of apatite as the chief phosphate bearing mineral while the major interfering iron oxide bearing mineral are magnetite, hematite, goethite limonite in association
apatite flotation from magnetite fines is depending on parameters like the hydrodynamics of the flotation pulp, pulp pH, temperature, collector concentration, level and speciation of ions e.g. Ca and mg in the process water. Furthermore the possible mineral interactions in the flotation pulp
Jan 02, 2012 With the depleting reserves of high-grade iron ore in the world, froth flotation has become increasingly important to process intermediate- and low-grade iron ore in an attempt to meet the rapidly growing demand on the international market. In over half a centurys practice in the iron ore industry, froth flotation has been established as an efficient method to remove impurities from iron ore.
ph needed for magnetite flotation process. The strength of our chemistry and process know-how lies in the ... but in all magnetite flotation, ... float apatite without any need for depressant. Read more
depressant in thc iron ore industry, the role of this reagent in the phosphate tlotation is not completely understood yet. In the present paper, adsorption isotherms of starch on apatite and magnetite are presented. The results show that corn starch adsorhs on magnetite at a
used in apatite flotation as a depressant and its depressant action is similar, or higher, than cornstarch. Conclusions Sorghum. 38 Since sorghum price is 70 to 80 lower than corn, the flotation results can be seen not only technically but also economically important. Conclusions.
There are several reasons for this but in all magnetite flotation, the collector must have the capability to float mixed magnetite-silica grains. ... Flotation of phosphateapatite. ... in this area and are the only company that can offer collectors that only float apatite without any need for depressant. Flotation of potash.
Lecture 6 Flotation 7 Depressants for semisoluble salts Sodium carbonate. Surface cabonation is an important reaction caused by CO ... With fluorite and apatite there is a minor effect, but with scheelite very little effect. The effect ... - Haematite, magnetite, goethite and siderite - Gangue minerals predominately silicates .
mainly of apatite, clay minerals, magnetite, barite, hydrated iron minerals, aluminum and iron secondary phosphates, titanium minerals and other minerals. The ore is processed in four physically distinct processing steps consisting of crushing and grinding, concentration flotation, high
New O and Fe stable isotope ratios are reported for magnetite samples from high-grade massive magnetite of the Mesoproterozoic Pea Ridge and Pilot Knob magnetite-apatite ore deposits and these results are compared with data for other iron oxide-apatite deposits to shed light on the origin of the southeast Missouri deposits. The 18O values of magnetite from Pea Ridge n 12 and Pilot Knob ...
We propose that the 18O and 56 Fe data for the Pea Ridge and Pilot Knob magnetite-apatite deposits are consistent with the flotation model recently proposed by Knipping et al. 2015a, which invokes flotation of a magmatic magnetite-fluid suspension and offers a plausible
Trace-element characteristics of magnetite from Kiruna-type iron oxide-apatite deposits indicate a magmatic origin. A possible scenario currently considered for the magmatic formation, apart from melt immiscibility, is related to degassing of volatile-rich magmas. Decompression, e.g., induced by magma ascent, results in volatile exsolution and the formation of a magmatic volatile phase.
Previous studies have shown that agglomeration of the magnetite concentrate after reverse flotation of apatite is negatively affected by the collector species adsorbed on the surface of magnetite. In this work, the effect of ionic strength, calcium ions and sodium silicate on the unwanted adsorption
floTaTion for The reCovery of Ultra-Fine PhosPhates harold e. Wyslouzil ... of Brazil is residual, consisting mainly of apatite, clay minerals, magnetite, barite, hydrated iron minerals, aluminum and iron ... reductions usually occur with depressants, where it is possible to
These magnetite inclusions . tite were in the form of finely disseminated particles. The liberation of apatite from calcite could not be determined microscopically due to the siroularity in colour and texture of the minerals. 2.2.2 Determination of the liberation of apatite and calcite To determine the liberation of apatite and calcite,
The effects of dissolved mineral species of calcite and apatite on the flotation of these minerals has been shown recently in our laboratory to be drastic under certain solution conditions 6. Flotation of calcite and apatite in mineral supernatants was drastically depressed due to the pre-sence of dissolved species.
US2466995A US636227A US63622745A US2466995A US 2466995 A US2466995 A US 2466995A US 636227 A US636227 A US 636227A US 63622745 A US63622745 A US 63622745A US 2466995 A US2466995 A US 2466995A Authority US United States Prior art keywords ilmenite apatite acid starch concentrate Prior art date 1945-12-20 Legal status The legal status is an assumption and is not a legal conclusion.
Two options were examined to control apatite flotation apatite flotation in the pyrite circuit using small amounts of tall oil, and use of NaF to depress the apatite during the ilmenite cleaning operation. Both methods were capable of lowering the apatite content of the ilmenite concentrate, with an appreciable loss of ilmenite.
Sep 01, 2020 The results from flotation experiments illustrated that PAMS effectively depressed the dolomite flotation whereas it exhibited weak influences on the floatability
Aug 01, 1998 In the absence of sodium silicate, the Atrac collector is found to be active for both apatite and magnetite flotation. A better selectivity between the apatite
To elucidate how phosphoric acid H3PO4 as a depressant achieves selective separation of apatite and dolomite, the flotation response of these minerals was
apatite flotation as a depressant and its depressant action is similar, or higher, than observed for cornstarch. Since sorghum price is lower than corn, the
depressants for the depression of iron oxides through the traditional reverse flotation. However, all these depressants adsorption mechanisms on the surface of
Calcite flotation-Coconut soap calcite collector-CO 2 bubble generator-pH 5.8 Apatite flotation-Sulphosuccinateapatite collector-Corn starch
Jan 02, 2012 Apatite minerals are readily floated using anionic collectors such as fatty acids. At LKAB Luossavaara-Kiirunavaara AB in Kiruna, Sweden, the dephosphorization of
A process for beneficiating celestite, barite, scheelite, fluorite, calcite, magnetite, gypsum, anhydrite, and apatite is disclosed comprising froth floating a