Jul 01, 2010· The recovery and concentrate grade were 91.7% and 26.5%, respectively when the refined tall oil fatty acid was used at a dosage of 0.45 kg/t at pH 10.0 with a 9:8 (by mass) concentration ratio of fatty acid to diesel. High pulp pH was found to have positive effects on phosphate flotation.

The flotation separation on chlorite and hematite with the new modified fatty acid collector CY-23 was studied. The investigation included both flotation and reagent adsorption tests. And all the characteristics of chlorite surface before and after the adsorption of new collector CY-23 have been studied with X-ray photoelectron spectroscopy (XPS).

Jan 01, 2016· Fuerstenau and Palmer have reported the flotation of chromite using saturated fatty acids. For the shorter chain homologues (C8 and C10), plus lower additions of C12, flotation was only possible below the isoelectric point of the mineral, showing that only physical adsorption of collector species was occurring.

FLOTATION BEHAVIOR OF SUDANESE CHROMITE ORES 1 ... Flotation offers an alternative concentration process for the separation of the fine materials ... hydrofluoric acid, sodium fluoride or sodium silicofluoride in the flotation medium. ... fines, chromite the medium particles and olivine the coarse. ... chromite sample and a high grade serpentine using sodium oleate as the collector.

Chromium values are recovered from pulverized chromite ore by agitating and aerating an aqueous pulp of said pulverized chromite ore containing an amine collector at a pulp acidity less than 2.5; and recovering a chromite containing froth as a concentrate.

The flotation of chromite from "slime fraction" of the gravity circuit of Kemi concentrator, Finland was studied. The main gangue minerals are chlorite, tremolite and talc. Amines or fatty acid collectors are normally used for this sort of mineral composition.

Continuous hydrogenation of fats and fatty acids using suspended catalysts was studied in a vertical flow reactor packed with Raschig rings. A short time of reactive contact of the fat or the fatty acid with the catalyst and hydrogen is the unique feature of this system. A nickel catalyst used in the hydrogenation of soybean oil gave a reduction of 40-50 iodine value units per min, small ...

Chromium values are recovered from pulverized chromite ore by agitating and aerating an aqueous pulp of said pulverized chromite ore containing an amine collector at a pulp acidity less than 2.5; and recovering a chromite containing froth as a concentrate.

In the conventional phosphate flotation (Crago) process, 30–40% by weight of the silica present in the feed are floated twice, first by fatty acid, and then by amine.

The flotation separation on chlorite and hematite with the new modified fatty acid collector CY-23 was studied. The investigation included both flotation and reagent adsorption tests. And all the characteristics of chlorite surface before and after the adsorption of new collector CY-23 have been studied with X-ray photoelectron spectroscopy (XPS).

The slightly increased interaction energies as a function of fatty acid carbon chain length agree with the phosphate collector in the flotation of bastnaesite, 16 the amine collector in the ...

The flotation process is typically conducted by adding 0.5 to 5.0 pounds fatty acid, 0.1 to 10.0 pounds soluble fluoride ion and 1.0 to 11.0 pounds sulfuric acid per ton of ore to the aqueous treatment medium containing the chromite ore.

In the conventional phosphate flotation (Crago) process, 30–40% by weight of the silica present in the feed are floated twice, first by fatty acid, and then by amine.

Oct 24, 2012· Collector: fatty acid, fatty acid emulsion, fatty acid soap and/or organo-modified … Dolomite flotation of high magnesium phosphate ores using fatty … The separation of dolomite from apatite has been … In this study, selective surfactants were used with a fatty acid soap collector to improve the flotation … US Patent # 5,147,528.

May 01, 1996· The flotation of chromite from "slime fraction" of the gravity circuit of Kemi concentrator, Finland was studied. The main gangue minerals are chlorite, tremolite and talc. Amines or fatty acid collectors are normally used for this sort of mineral composition. Theoretically, a sufficient selectivity should be expected in the region where ...

FLOTATION BEHAVIOR OF SUDANESE CHROMITE ORES 1 ... This study is concerned with the processing of low grade chromite ores, ... Froth flotation was used to upgrade this chromite ore. ... fatty acid-amine collector. Read more

The flotation of chromite from "slime fraction" of the gravity circuit of Kemi concentrator, Finland was studied. ... Amines or fatty acid collectors are normally used for this sort of mineral ...

3 Microorganisms in Flotation and Flocculation of Minerals – An Overview ..... 109 Application of Jig in Preconcentration of Cassiterite-bearing Multi-metal Sulfide Ore ..... 249 Effect of Variability in Feed Characteristics on Fatty Acid Flotation of .... 335 Iron Removal from Kaolin by Using Organic Acids of Fungal Fermentation.

Jan 01, 2016· Fuerstenau and Palmer have reported the flotation of chromite using saturated fatty acids. For the shorter chain homologues (C8 and C10), plus lower additions of C12, flotation was only possible below the isoelectric point of the mineral, showing that only physical adsorption of collector species was occurring.

The application of fatty chemicals to flotation. Robert E. Baarson 1 & John R. Parks 1 ...

Aug 21, 2019· Under the appropriate flotation conditions (0.1% amylase, 5·10−4 mol/dm3 oleic acid, and temp. 30 °C), phospho-concentrate assaying 0.61% MgO, 13.14% SiO2, and 27.85% P2O5 with a P2O5 recovery of 55.45%, was finally obtained without the use of expensive depressants, e.g., phosphoric acid or sodium silicate.

Flotation of chromite and serpentine ... saturated carboxylic acids ... anionic flotation was successful using fatty acids to alkaline media. The chromite deposits of Greece occur exclusively in ...

The key operational steps in flotation involve the use of surfactants to ensure the detachment of the ink from the fibers (detergency) and the formation of a stable foam that can be separated from the pulp during the flotation stage. In a typical process the amount of surfactant used is about 0.025-0.25 % based on oven-dry fiber mass.

Detergent-range alcohols from natural feedstock can be produced by high pressure hydrogenation of either methyl esters or fatty acids. The increasing quantities of fats and oils on the world market secure a reliable and economically priced material. Although fatty acid is an abundant worldwide commodity, most alcohol producers hydrogenate methyl esters, because direct hydrogenation of fatty ...

The flotation process is typically conducted by adding 0.5 to 5.0 pounds fatty acid, 0.1 to 10.0 pounds soluble fluoride ion and 1.0 to 11.0 pounds sulfuric acid per ton of ore to the aqueous treatment medium containing the chromite ore.

flotation from quartz. In their extensive study, they concluded that fatty acids and their soaps are superior collectors for hematite flotation and among these, sodium oleate is the best collector. Rietz [2], Kihlstedt [3] and Kivalo et al. [4] have demonstrated the successful use of tall oil in hematite flota-tion.