dolomite flotation concentrate

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  • Selective reverse flotation of apatite from dolomite in

    Closed-circuit reverse flotation tests using GOFA as the collector resulted in an excellent concentrate with 28.46 wt% P 2 O 5 and 0.65 wt% MgO, corresponding to a P 2 O 5 recovery of 87.2%. GOFA was demonstrated to exhibit outstanding selectivity for dolomite in the reverse flotation of collophanite ore.Effect of Sodium Chloride on Dolomite Flotation,With the conventional processing techniques, dolomite, usually reported as weight percent MgO, cannot be selectively removed from apatite, the phosphate mineral. More than 1% MgO in the final phosphate concentrate would present problems during chemical processing to manufacture phosphoric acid, an intermediate chemical used in the production of fertilizers.

  • REMOVAL OF DOLOMITE FROM PHOSPHATE PEBBLE

    PHOSPHATE PEBBLE CONCENTRATE BY ENHANCED JIGGING FINAL REPORT Prepared by Michigan Technological University Houghton, MI under a grant sponsored by March 2012. REMOVAL OF DOLOMITE FROM PHOSPHATE PEBBLE CONCENTRATE BY ENHANCED JIGGING . FINAL REPORT . S. K. Kawatra . Principal Investigator The ground slurry is subject to dolomite flotationDEVELOPMENT OF REAGENT SCHEMES FOR REDUCING MgO ,publication no. 02-179-246 . development of reagent schemes for . reducing mgo content in the flotation . concentrate for processing florida’s . high-dolomite phosphate deposits

  • Flotation Research on Dolomite-Containing Magnesite Ore

    As the solubility product of calcium oleate is bigger, the floatability of dolomite which compared to magnesite is much higher in the flotation system of sodium oleate. After the flotation experiments of pure minerals, a novel flotation system for recovering magnesite concentrate from low-grade magnesite ore was developed.Removal of Dolomite from Phosphate Pebble Concentrate by,« Back. Removal of Dolomite from Phosphate Pebble Concentrate by Enhanced Jigging. 02-181-242Final. Abstract. Dolomite [CaMg(CO 3 2] is an objectionable impurity in phosphate ores due to its MgO content.Separating dolomite from phosphate ores (apatite) has proven to be difficult due to very similar mineralogical properties.

  • DEVELOPMENT OF NEW TECHNOLOGY FOR BENEFICIATION

    4. Diluting the dolomite flotation concentrate and sizing to remove the concentrates finer than 400 mesh 5. Using an amine with kerosene as an extender, and soda ash to adjust pH, to float the sand in the oversize dolomite flotation concentrate to reduce the SiO 2 or insol content. 6. Combining the amine concentrate and the dolomite flotationFlotation of Dolomite from Apatite MDPI,The flotation process lasted 3 min for each test. Following this, the flotation recoveries were calculated based on the weights of concentrates and tailings. For artificial mixed minerals flotation experiments, the mass ratio of apatite and dolomite mineral was 1:1 for binary mixture. The flotation process was the same as single mineral tests

  • (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 separation of dolomite and phosphate by flotation.Effect and mechanism of phosphoric acid in the apatite,Oct 10, 2017· Effect and mechanism of phosphoric acid in the apatite/dolomite flotation system. Author links open overlay panel Xing Liu a Yaoyang Ruan b Chengxiu Li a Renju Cheng a. a concentrate with 27.32 wt% P 2 O 5 and 5.78 wt% MgO was obtained from the feed that contained 19.95 wt% P 2 O 5 and 10.27 wt% MgO.

  • (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 separation of dolomite and phosphate by flotation.Selective reverse flotation of apatite from dolomite in,Aug 10, 2017· As magnesium is a major constituent of dolomite, but not of apatite, GOFA was selectively chemisorbed onto the dolomite surface. Closed-circuit reverse flotation tests using GOFA as the collector resulted in an excellent concentrate with 28.46 wt% P 2 O 5 and 0.65 wt% MgO, corresponding to a P 2 O 5 recovery of 87.2%. GOFA was demonstrated to

  • Froth Flotation Principles

    Froth Flotation Process for Copper. Froth Flotation Cells are a big factor in the production of copper concentrates in various sections of the world. They are extensively used for producing a high-grade copper-sulphide concentrate low in iron.Calcite Processing by Flotation for Beneficiation,The Problem with Calcite Processing & Flotation The availability of high lime rock is often limited and it becomes necessary to use lower grade sources from quarries favorably located to cement plants. Beneficiation of the lime rock in such cases is necessary to remove impurities and to secure the proper ratio of calcite to other constituents for cement specifications.

  • Hydrochloric acid leaching for upgrading flotation

    Hydrochloric acid leaching of flotation concentrate Before the investigations, the main reactions that may occur in the leaching solution are briefly discussed. As mentioned above, the dominant impurity in the concentrate was determined as dolomite of a chemical formula of CaMg(CO 3) 2, and, as shown in Table 1, Al 2 O 3, TiO 2 and Fe 2 O 3Flotation separation of carbonate from sulfide minerals, I,The mixed depressant had no effect on the flotation of calcite, but it depressed dolomite flotation when its concentration was above 2 × 10 −4 M. Fig. 8 shows that the mixed depressant had little effect on the flotation of calcite and dolomite at 1 × 10 −4 M across the pH range tested. However, the mixed depressant caused strong

  • Fine particle flotation for Florida dolomitic phosphate

    tank flotation cell and 2-in ID packed flotation column aiming at achieving a phosphate concentrate containing more than 30% P2O5 and less than 1.0% MgO contents at high P2O5 recovery. The characteristics of fatty acid collector, FA-12 and a newly developed PA-31 collector were evaluated for frothability and dolomite flotation rate.Cobalt and Nickel Recovery From Missouri Lead Belt,COBALT AND NICKEL RECOVERY FROM MISSOURI lEAD BELT CHALCOPYRITE CONCENTRATES by R. K. Clifford 1 and L. W. Higley, Jr.2 ABSTRACT Chalcopyrite (CuFeSz ) concentrates produced on the Lead Belt of Missouri typically contain 28 pct Cu and from 0.5 to 1.5 pct each of nickel and cobalt.

  • Processing Florida Dolomitic Phosphate Pebble with

    serious of carbonate flotation collectors have been developed for phosphate ores from various origins. The topic will focus on processing Florida dolomitic phosphate pebble with Custofloat® carbonate collectors. INTRODUCTION Phosphate rock is a vital, nonrenewable and Development of an environmentally friendly flowsheet to,Jun 10, 2018· Acid grade fluorite concentrate (AGFC) is the most valuable product of fluorite processing units. In this study, an environmentally friendly flowsheet is developed for the production of AGFC. The ore of the Kamar Mehdi fluorite mine (Tabas, Iran) is considered as a case study with grade of 76.65% fluorite, 21.62% dolomite and 0.32% hematite.

  • US4364824A Flotation of phosphate ores containing

    A reverse flotation process for removing alkaline earth metal carbonate impurities particularly dolomite and calcite as the cell overflow from a flotation feed reagentized with water, a carbonate collector, a phosphate depressant and a pH regulator to about 20-30% solids and a pH of about 5.5-6.0. The phosphate concentrate is collected as the cell underflow.22 Flotation of Niobium,The calcite/dolomite in actual practice is recovered using fatty acid as a collector and starch or dextrin as the pyrochlore depressant during calcite–dolomite flotation. A number of studies have been conducted [1,2] in which different fatty acid modifica-tions were examined. High selectivity and high calcite–dolomite recoveries were obtained

  • To all who contributed and guided me in the accomplishment

    10. The concentrate is reconditioned (30 seconds) with sulfuric acid (maintains pH 4-5). This is followed by flotation to remove dolomite. Final processing involves cationic flotation of the fine silica from the dewatered dolomite flotation cell. Resulting phosphate concentrate contained ~ 28% P 2 O 5, ~ 1% MgO and 2.9% insolubles.Innovative RTS Technology for Dry Beneficiation of Phosphate,Innovative RTS technology for dry beneficiation of phosphate Ahmed Sobhy a,b,Daniel Tao a, * a The Department of Mining Engineering, University of Kentucky, 230

  • To all who contributed and guided me in the accomplishment

    10. The concentrate is reconditioned (30 seconds) with sulfuric acid (maintains pH 4-5). This is followed by flotation to remove dolomite. Final processing involves cationic flotation of the fine silica from the dewatered dolomite flotation cell. Resulting phosphate concentrate contained ~ 28% P 2 O 5, ~ 1% MgO and 2.9% insolubles.Cellulase as a new phosphate depressant in dolomite,oleic acid, a phosphate concentrate containing 0.89% MgO with a P 2 O 5 recovery of 75% was obtained from the phosphate ore containing 2.2% MgO. Keywords: flotation, cellulose, cellophane, dolomite, oleic acid Introduction The phosphate/oleic acid flotation system has been studied extensively since the beginning of the flotation reached.

  • Flotation separation of carbonate from sulfide minerals, I

    The mixed depressant had no effect on the flotation of calcite, but it depressed dolomite flotation when its concentration was above 2 × 10 −4 M. Fig. 8 shows that the mixed depressant had little effect on the flotation of calcite and dolomite at 1 × 10 −4 M across the pH range tested. However, the mixed depressant caused strongBENEFICIATION OF DOLOMITE AND MAGNESITE,concentrate assaying 2.7% insol. After one cleaning, the product analysed 30.4% CaO and 21.25% MgO with 1.75% insol. Cationic flotation tests using amine 220, at PH 9.7, the dolomite concentrate (flotation tailing) analysed 2.7% insolubles. MAGNESITE This is

  • Carbonate Phosphate Separation by Flotation

    The Mussoorie ore contained about 45 percent calcite, 35% francolite, 10% quartz, 5% dolomite with the remainder of the ore being constituted of pyrite, clay and organic matter. Flotation tests were carried out in 250 gram batches using a model D-1 Denver Laboratory Flotation Machine with froth flotation of dolomite hikeafrica.co.za,Removal of Dolomite from Phosphate Pebble Concentrate by . Contact angle experiments were conducted to determine whether existing froth flotation reagents could make dolomite sufficiently hydrophobic for a novel "flotation jigging" process.

  • Promising Options for Solving the Dolomite Problem of the

    Option 1 offers three methods for reducing MgO content in the concentrate from the Crago process, including adding a dolomite depressant in the rougher flotation step, dolomite flotation of the cleaner concentrate, and scrubbing the cleaner concentrate in quartz sand. These methods could reduce MgO content in the final concentrate by 20–40%.Flotation and Purification Research on Low Grade Magnesite,Low grade magnesite coexisting with dolomite was purified by flotation. A process of reverse flotation to remove silicate minerals- positive flotation to concentrate magnesite was explored after the systematic process mineralogical investigation. Influence of different conditions such as grinding fineness experiment, collector experiment and combined modifiers experiment was also investigated.

  • SEPARATING DOLOMITE FROM PHOSPHATE ROCK BY REACTIVE

    5 Efforts to concentrate high-dolomite Florida phosphate ores by flotation, using conventional fatty-acid/fuel-oil flotation [Liewellyn, 1982], showed that sodium silicate depression on dolomite was not enough to obtain a concentrate less than 1 % MgO. This may be due to the presence of silica in this ore in addition to dolomite.An Alternative Flotation Process for Apatite Concentration,An Alternative Flotation Process for Apatite Concentration of the Itataia Carbonaceous Uranium-Phosphate Ore Flotation carbonates Air Apatite concentrate Froth Conditioning-50% solids-Collector(sulphosuccinate) An Alternative Flotation Process for Apatite Concentration of the Itataia Carbonaceous Uranium-Phosphate Ore

  • The Desulfurization of Magnetite Ore by Flotation with a

    concentrate was calculated by the following equation: "m p 1 1.59 2q 0 1.59 3 (1) where #m is the magnetite recovery in concentrate, 1 is the Fe grade of concentrate, 2 is the S grade of concentrate, 0 is the Fe grade of raw ore, 3 is the S grade of raw ore, is yield of concentrate, and the rate of Fe to S is 1.59 in pyrrhotite.Flotation experiment research on a polymetallic sulfide ore of,Flotation experiment research on a polymetallic sulfide ore of and zinc can be obtained via flotation separation. The concentrate products of sulfur can be obtained only when the ore’s pyrite content is high. Gold and silver can be recovered from the dolomite, and chlorite. In addition, the most usable elements found in the

  • Elimination of the Adverse Effect of Calcium Ion on the

    dolomite enters into magnesite concentrate easily in the flotation process, thus affecting the grade Flotation Behaviors of Magnesite and Dolomite Figure 3 shows the effect of NaOL dosage on th e flotation recoveries of magnesite and dolomite.US4364824A Flotation of phosphate ores containing,A reverse flotation process for removing alkaline earth metal carbonate impurities particularly dolomite and calcite as the cell overflow from a flotation feed reagentized with water, a carbonate collector, a phosphate depressant and a pH regulator to about 20-30% solids and a pH of about 5.5-6.0. The phosphate concentrate is collected as the cell underflow.