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Flotation Talc Patent 24

To ensure proper flotation against entrapment of unwanted tremolite, the tremolite content in the talc was checked frequently with X-ray diffraction during an interval of one to two hours during the flotation period. The recovery data are as follows: Concentrate 64 lbs. 47.2% Middlings 33.5 24.7 Tails 38 28 Total 135.5 lbs

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  • The Art of Talc Flotation for Different Industrial
    The Art of Talc Flotation for Different Industrial

    May 23, 2016 Talc has found a steadily increasing number of uses such as cosmetics, steatite and cordierite ceramics, for pitch control in the paper industry and as a reinforcing filler in rubber, etc. In this research, the amenability of some Egyptian carboniferous finely disseminated talc ores to beneficiation by flotation was investigated on laboratory scale

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  • Method for the depressing of hydrous, layered silicates
    Method for the depressing of hydrous, layered silicates

    In the flotation of such hydrous, layered silicates as talc and pyrophyllite, depressants such as guar gum, starch, dextrin and carboxy methyl cellulose have been found to be useful commercially. Guar gum and carboxy methyl cellulose are the only two widely employed with the guar gum the most common depressant for talc by far

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  • TALC BENEFICIATION - WILLIAM H. ASHTON
    TALC BENEFICIATION - WILLIAM H. ASHTON

    TALC BENEFICIATION - WILLIAM H. ASHTON. Title: TALC BENEFICIATION. United States Patent 3684197. Abstract: A novel method of preparing talc powder compositions by selectively exfoliating platy talc ore to produce a unique, low bulk-density, platy, high slip and lusterous powder base composition. The delamination of the platy talc ore is

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  • Flotation with xanthate - WESTON; DAVID
    Flotation with xanthate - WESTON; DAVID

    A process for the flotation of copper minerals employing xanthates, wherein the copper minerals are strongly activated in at least one stage at a pH of 10 to 12 and then conditioned with a dispersing agent or a flocculating agent prior to flotation, the process showing marked improvement in grade and recovery in the case of refractory ores and ore containing talc and clay, and being effective

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  • Enhancing flotation separation of chalcopyrite and
    Enhancing flotation separation of chalcopyrite and

    Mar 18, 2021 As for the talc type Copper-Nickel Sulfide Ores, the talc entrained in flotation concentrate with foam will affect the grade of copper sulfide

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  • The selective flotation of pentlandite from a nickel ore
    The selective flotation of pentlandite from a nickel ore

    Jun 01, 1995 G.D. Senior et al. lint. J. Miner Process. 43 (1995) 209-234 213 ProcedJ~re Each test involved several stages in which conditions were arranged to separate pent- landite from either pyrrhotite or talc. Pre-flotation of talc. In this stage, fast floating talc was floated from the ore at pH 9. The time w~Ls 2 min. and the froth was scraped every 5 s

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  • Development and Use of Certain Flotation Reagents
    Development and Use of Certain Flotation Reagents

    Development and Use of Certain Flotation Reagents. Page: 81. 96 p. : ill. This report is part of the collection entitled: Technical Report Archive and Image Library and was provided to UNT Digital Library by the UNT Libraries Government Documents Department . View a full description of this report

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  • Patents Assigned to Imerys - Justia Patents Search
    Patents Assigned to Imerys - Justia Patents Search

    Sep 12, 2017 The first talc and the second talc may form a talc composition, and the talc composition may have a content ratio of the first talc to the second talc ranging from about 30:70 by weight to about 80:20 by weight. ... Date of Patent: December 24, 2019 Assignee: Imerys Talc America, Inc. Inventors: Edward F. Mccarthy, Saied Kochesfahani, Michele

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  • US3459299A - Talc beneficiation - Google Patents
    US3459299A - Talc beneficiation - Google Patents

    US3459299A US664934A US3459299DA US3459299A US 3459299 A US3459299 A US 3459299A US 664934 A US664934 A US 664934A US 3459299D A US3459299D A US 3459299DA US 3459299 A US3459299 A US 3459299A Authority US United States Prior art keywords talc flotation ore pulp alkanolamide Prior art date 1967-09-01 Legal status (The legal status is an assumption and is not a

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  • Processing nickel bearing sulphides - BHP Billiton SSM
    Processing nickel bearing sulphides - BHP Billiton SSM

    Jan 09, 2009 The invention claimed is: 1. A method of separating nickel bearing sulphides from mined ores or concentrates of mined ores that contain talc particles, the method comprising at least one flotation stage comprising decreasing an Eh of a slurry of mined ores or concentrates of mined ores by adding a reducing agent and making particles of nickel bearing sulphides in the ores or concentrates

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  • US3102856A - Platy talc beneficiation - Google Patents
    US3102856A - Platy talc beneficiation - Google Patents

    talc platy flotation percent content Prior art date 1960-06-24 Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no

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  • Selective separation of chalcopyrite and talc using
    Selective separation of chalcopyrite and talc using

    Aug 20, 2021 The pulp pH is usually a key factor that affects the flotation of sulphide ore. Herein, the flotation recoveries of chalcopyrite and talc were demonstrated as a function of pH with 20 mg/L NaBX in the absence and presence of pullulan, as shown in Fig. 3.The recoveries of both minerals exceeded 85% in the pH range of 2.5–11.5 in the absence of pullulan

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  • US3533821A - Talc treatment and talc ... - Google Patents
    US3533821A - Talc treatment and talc ... - Google Patents

    United States Patent Of 3,533,821 TALC TREATMENT AND TALC CONTAININ PIGMENTS John D. Lundquist, Clark, N.J., assignor to Georgia Kaolin Company, a corporation of New Jersey No Drawing

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  • A review of the beneficiation of copper-cobalt-bearing
    A review of the beneficiation of copper-cobalt-bearing

    Nov 01, 2019 The optimum pH for the flotation of oxidised Cu–Co ores with fatty acids is often between 8 and 10. For talc and dolomitic Cu–Co ores, flotation by means of xanthates after superficial sulphidisation is the preferred method because it allows good results to be obtained regardless of the nature of the gangue encountered

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  • EP2152426A1 - Treatment of talc in a solvent - Google Patents
    EP2152426A1 - Treatment of talc in a solvent - Google Patents

    The present invention is directed to a process for the treatment of talc, comprising the steps of (a) providing a talc having a first brightness value B1, measured according to ISO 2469, and forming a suspension of the talc in a liquid phase, the liquid phase of the suspension comprising at least one organic solvent, (b) delaminating and/or reducing the weight median particle size d50 of the

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  • US8323397B2 - Talc for paint products and ... - Google Patents
    US8323397B2 - Talc for paint products and ... - Google Patents

    US8323397B2 US13/128,564 US200813128564A US8323397B2 US 8323397 B2 US8323397 B2 US 8323397B2 US 200813128564 A US200813128564 A US 200813128564A US 8323397 B2 US8323397 B2 US 8323397B2 Authority US United States Prior art keywords talc slurry particle size talc slurry size distribution Prior art date 2008-11-11 Legal status (The legal status is an assumption and is not a

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  • Talc-molybdenite separation - PIMA MINING COMPANY
    Talc-molybdenite separation - PIMA MINING COMPANY

    United States Patent 3921810 ... A method of separating ore or concentrate having molybdenite and a substantial amount of a hydrophobic silicate talc containing magnesium by froth flotation to obtain a molybdenite enriched concentrate and hydrophobic silicate talc enriched tailings, which method consists essentially of: ... 24. forming a dual

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  • Leaching tremolite impurity from talc - Cyprus Mines
    Leaching tremolite impurity from talc - Cyprus Mines

    A flotation pulp is prepared by slurrying the talc ore in deionized water to make up a slurry of 10% solids. To assure complete wetting, the pulp is mixed at a high speed for at least 30 minutes. Flotation consists of a 2 stage operation, i.e., rougher flotation and a cleaner flotation

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  • (PDF) The Art of Talc Flotation for Different Industrial
    (PDF) The Art of Talc Flotation for Different Industrial

    The Art of Talc Flotation for Different Industrial Applications. January 2016. Journal of Minerals and Materials Characterization and Engineering 04 (03):218-227. DOI: 10.4236/jmmce.2016.43020

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