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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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US3102856A - Platy talc beneficiation - Google Patents

US3102856A US38428A US3842860A US3102856A US 3102856 A US3102856 A US 3102856A US 38428 A US38428 A US 38428A US 3842860 A US3842860 A US 3842860A US 3102856 A US3102856 A US 3102856A Authority US United States Prior art keywords 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.

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US3307790A - Flotation method and apparatus - Google Patents

US3307790A US266555A US26655563A US3307790A US 3307790 A US3307790 A US 3307790A US 266555 A US266555 A US 266555A US 26655563 A US26655563 A US 26655563A US 3307790 A US3307790 A US 3307790A Authority US United States Prior art keywords flotation froth mineral slurry tailing Prior art date 1963-03-20 Legal status (The legal status is an assumption and is not a legal

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Leaching tremolite impurity from talc - Cyprus Mines ...

A New York talc ore is ground to a fine particle size and then screened through a 200 mesh screen. The oversized materials are repulverized and rescreened repeatedly to secure 100 percent minus 200 mesh materials as a flotation feed. A flotation pulp is prepared by slurrying the talc ore in deionized water to make up a slurry of 10% solids.

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WO2013120689A1 - Mineral ore flotation ... - Google Patents

- Google Patents A flotation method for mineral processing is disclosed. The method for floating comprises a first step comprises using a first carboxymethyl cellulose (CMC) in a first flotation...

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US3844412A - Depressing reagent for mineral flotation and ...

US3844412A US30887472A US3844412A US 3844412 A US3844412 A US 3844412A US 30887472 A US30887472 A US 30887472A US 3844412 A US3844412 A US 3844412A Authority US United States Prior art keywords mineral algae powder flotation minerals alginic acid Prior art date 1969-06-25 Legal status (The legal status is an assumption and is not a legal conclusion.

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US3965241A - Leaching tremolite impurity from talc ...

A process for removing tremolite impurity from talc by subjecting finely ground talc to a combination of steps including froth flotation and pressure leaching with a strong acid at an elevated temperature. The recovered talc is characterized by a tremolite content of less than 1.0 percent by weight.

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Method for the production of mineral micronized talc ...

Patent registration. ... Flotation of talc carried out in the flotation devices with the use of chemical reagents. The disadvantages of the technological scheme is the need for multi-stage grinding, flotation of talc using chemical reagents, complex and energy-intensive process equipment, low quality of commercial products, because in the ...

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US Patent for Degradation of petroleum hydrocarbons with ...

Jun 07, 1995  The wax is paraffin wax or beeswax, and the microshell may be coated with talc or carbon powder to provide insulation and to prevent one microshell from sticking to another. When used for remediating an oil spill on water, the microshells are preferably contained in a buoyant container that acts as a flotation device.

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FLOTATION OF COPPER AND NICKEL SULFIDES FROM TALCOSE ...

My invention relates to the flotation of nickel and copper sulphide minerals from talcose bearing ores. Ores of the aforegoing minerals which contain substantial amounts of talc had heretofore been particularly resistant to economic treatment through flotation as the finely divided talcose materials have interfered with the differential activation and flotation of the minerals.

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BENEFICIATION OF NEW YORK STATE TALC - CYPRUS MINES

Froth flotation of the above-mentioned ores had been reported as early as 1939 [J.E. Norman et al., "Froth Flotation of Talc Ores from Gouverneur, New York,"

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Talc-molybdenite separation - PIMA MINING COMPANY

United States Patent 3921810 ... 11. 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

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Method of producing magnesium oxide from talc-magnesite ...

In the flotation recovery of talc telkominternet ore formed tailings talc, consisting mainly of magnesia, residual talc and impurities contained in the ore. The method includes the decarbonisation contained in raw materials MgCO 3 by firing at a temperature of 750-900°C, crushed to a particle size of 0.1 to 1.5 mm talcomagnesite (waste ...

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Chemically Specified Precipitant ... - Justia Patents Search

Jun 21, 2013  Justia Patents Liquid Purification Or Separation Patents Processes Patents Making An Insoluble Substance Or Accreting Suspended Constituents Patents Effecting Flotation Patents Including Chemical Addition (with Or Without Bouyancy Gas) Patents Chemically Specified Precipitant, Coagulant, Or Flocculant Patents (Class 210/705)

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Brian Judd Inventions, Patents and Patent Applications ...

Oct 30, 2010  Abstract: The present invention provides a method of separating nickel bearing sulphides from mined ores or concentrates of mined ores that contain talc particles is disclosed. The method comprises adjusting the Eh of a slurry of mined ores or concentrates of mined ores and making particles of nickel bearing sulphides less hydrophobic than talc particles and floating the nickel bearing ...

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Use of organic polymers in the flotation of polymetallic ...

Apr 01, 1999  Studies carried out on talcose mineral depression using CMC [21] showed that depression of talc with CMC was greatly influenced by the ionic strength and pH of the solution. Talc depression improved with either Use of organic polymers in flotation of polymetallic ores 349 an increased ionic strength of CMC or reducing pH of flotation.

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The Potential of Modified Starches as Mineral Flotation ...

Jan 18, 2021  Beattie DA, Huynh L, Kaggwa GB, Ralston J (2006) Influence of adsorbed polysaccharides and polyacrylamides on talc flotation. Int J Miner Process 78(4):238–249. Article Google Scholar 3. Booth RB (1939) Depression of carbonaceous material in flotation. US Patent

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Separation of talc and molybdenite: challenges and ...

Nov 01, 2019  Talc is a magnesium silicate clay mineral and when present in molybdenite concentrate, contributes to the acid-insoluble content. Talc has a laminar structure as shown in Fig. 4.As can be seen, talc is a tri-layered hydrated magnesium silicate with a chemical formula of 3MgO4SiO 2 H 2 O or Mg 3 (Si 2 O 5) 2 (OH) 2 (Xu et al., 2018, Yin et al., 2012), and its crystal structure is similar to ...

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Development and Use of Certain Flotation Reagents - Page ...

Acetoacetanilide, talc-collecting power, table . 64 Acetyldiethylamine, talc-collecting power, table. 64 Acid potassium dichromate, flotation tests, ferberite ore, results, table -----31 Acylation, of Ninols, effect on collecting proper-ties, table..-----68 Addition agents, effect on flotation, with anionic

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Selective depression behavior of guar gum on talc-type ...

Jul 29, 2017  The flotation results for monominerals, mixed minerals, and actual mineral samples indicated that guar gum exhibited much higher selective depression for talc than for scheelite. Bench-scale closed-circuit tests showed that a tungsten concentrate with a WO 3 grade of 51.43% and a WO 3 recovery of 76.18% was obtained.

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TALC BENEFICIATION - WILLIAM H. ASHTON

The platy talc content was then concentrated by froth flotation in a sub-aeration flotation cell, No. KC--52623--1. Froth flotation disclosed in U.S. Pat. No. 3,102,855 to W. E. Brown et al and U.S. Pat. No. 3,102,856 to W. E. Chase can be applied to separate the laminated platy talc crystals from the non-platy particles and non-talc ...

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US Patent for Mineral ore flotation using carboxymethyl ...

A flotation method for mineral processing is disclosed. The method for floating includes a first step of using a first carboxymethyl cellulose (CMC) in a first flotation cell, and a subsequent step includes using a second CMC in a subsequent flotation cell, the first and second CMCs having different characteristics. The first flotation cell may be used in at least one rougher stage and/or at ...

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Purification of talc - Engelhard Minerals Chemicals ...

The talc used in the examples was a commercial platy talc product. The talc was produced by wet processing an ore from a Vermont deposit. The wet processing included beneficiation by flotation an aqueous medium, drying and fine milling. The product was essentially 100% finer than 325 mesh and had an average particle size of 2.7 microns.

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The Art of Talc Flotation for Different Industrial ...

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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Preferential Patents and Patent Applications (Class 209 ...

Abstract: The present invention relates to a gravity/flotation circuit where a mineral stream, such as a flotation rougher or cleaner concentrate, undergoes a two stage size separation wherein: i) the screen of the first stage provides a coarse stream of particles greater than 110 microns and a fines stream of particles less than 110 microns; and ii) the fines stream of less than 110 microns ...

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Flotation of chalcopyrite, pentlandite, pyrrhotite ores ...

Nov 01, 1991  Talc is well known to be natu- rally hydrophobic and it is readily floated with only a frother. The talc content has a much greater influence on the flotation results than would be expected from its content in the ore. This is apparently related to the effect that the small amount of talc has on the properties of the froth.

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result of talc flotation

US3459299A - Talc beneficiation - Google Patents. talc flotation ore pulp alkanolamide Prior art date 1967-09-01 Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)

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US Patent for Deinking a cellulosic substrate using ...

Justia Patents With Alkali Metal, Alkaline Earth Metal, Or Ammonium Compound US Patent for Deinking a cellulosic substrate using magnesium silicate Patent (Patent # 8,133,350) Deinking a cellulosic substrate using magnesium silicate . Jul 9, 2008 - Nalco Company. A composition and method for deinking is disclosed. ...

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Current understanding of the mechanism of polysaccharide ...

Oct 19, 2007  In processing of these ores talc is depressed with the use of guar gum or carboxymethyl cellulose (Shortridge et al., 1999, Shortridge et al., 2000). In 1937, Brown obtained a patent to use starch as a molybdenite depressant in differential flotation of a Cu–Mo bulk concentrate (Brown, 1937).

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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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gyratory talc flotation machines brevetti

gyratory talc flotation machines brevetti Machines - Brevetti CEA,offers a complete range of automatic inspection machines for injectable pharmaceutical products contained in syringes, ampoules, vials, cartridges and bottles.

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Development and Use of Certain Flotation Reagents - Page ...

From Forward: "When the experiments described in this bulletin were begun many of the reagents were available only in trial quantities. Some of them are now available in commercial quantities and are of different compositions from those that were available for experimental work. It was not possible to determine the exact chemical composition of some of the reagents."

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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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The Potential of Modified Starches as Mineral Flotation ...

Jan 18, 2021  Beattie DA, Huynh L, Kaggwa GB, Ralston J (2006) Influence of adsorbed polysaccharides and polyacrylamides on talc flotation. Int J Miner Process 78(4):238–249. Article Google Scholar 3. Booth RB (1939) Depression of carbonaceous material in flotation. US Patent

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US Patent for Mineral ore flotation using carboxymethyl ...

A flotation method for mineral processing is disclosed. The method for floating includes a first step of using a first carboxymethyl cellulose (CMC) in a first flotation cell, and a subsequent step includes using a second CMC in a subsequent flotation cell, the first and second CMCs having different characteristics. The first flotation cell may be used in at least one rougher stage and/or at ...

Get Price

Purification of talc - Engelhard Minerals Chemicals ...

The talc used in the examples was a commercial platy talc product. The talc was produced by wet processing an ore from a Vermont deposit. The wet processing included beneficiation by flotation an aqueous medium, drying and fine milling. The product was essentially 100% finer than 325 mesh and had an average particle size of 2.7 microns.

Get Price

The Art of Talc Flotation for Different Industrial ...

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.

Get Price

Development and Use of Certain Flotation Reagents - Page ...

From Forward: "When the experiments described in this bulletin were begun many of the reagents were available only in trial quantities. Some of them are now available in commercial quantities and are of different compositions from those that were available for experimental work. It was not possible to determine the exact chemical composition of some of the reagents."

Get Price

Chemically Specified Precipitant ... - Justia Patents Search

Jun 21, 2013  Abstract: The invention relates to an electronic device comprising a compound having Formula (1): ABx (1), wherein A is a structural moiety that consists of at least two atoms and comprises a conjugated system of delocalized electrons, each B is independently selected from an imine functional group (1a), wherein R1, R2, R3, R4 are independently selected from C1-C30 alkyl, C2-C30 alkenyl,

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The Potential of Modified Starches as Mineral Flotation ...

Jan 18, 2021  Beattie DA, Huynh L, Kaggwa GB, Ralston J (2006) Influence of adsorbed polysaccharides and polyacrylamides on talc flotation. Int J Miner Process 78(4):238–249. Article Google Scholar 3. Booth RB (1939) Depression of carbonaceous material in flotation. US Patent

Get Price

Use of organic polymers in the flotation of polymetallic ...

Apr 01, 1999  Studies carried out on talcose mineral depression using CMC [21] showed that depression of talc with CMC was greatly influenced by the ionic strength and pH of the solution. Talc depression improved with either Use of organic polymers in flotation of polymetallic ores 349 an increased ionic strength of CMC or reducing pH of flotation.

Get Price

Current understanding of the mechanism of polysaccharide ...

Oct 19, 2007  In processing of these ores talc is depressed with the use of guar gum or carboxymethyl cellulose (Shortridge et al., 1999, Shortridge et al., 2000). In 1937, Brown obtained a patent to use starch as a molybdenite depressant in differential flotation of a Cu–Mo bulk concentrate (Brown, 1937).

Get Price

Patents Assigned to Cyprus Mines Corporation - Justia ...

Justia - Patents - Patents and Patent Application Resources. Abstract: Processes by which a mixture of two or more discrete particulate materials, each of said materials having a different sliding coefficient of friction, can be separated using methods which take advantage of velocity differences generated by the application of a force to said mixture to create movement of said mixture over a ...

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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.

Get Price

An Overview of Calcite Recovery by Flotation SpringerLink

Sep 23, 2020  The patents published on high-grade calcite beneficiation are either based on the development of the grinding process flowsheet or the reagent scheme used in flotation. This study is based on collector systems; thus, the different reagent schemes patented for calcite ore flotation are discussed below (Table 3 ).

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Mineral Flotation - International Mining

Nov 01, 2011  For more than a century now, flotation has been at the heart of the mineral processing industry. In this month’s SPOTLIGHT FEATURE ARTICLE, direct from the November issue of INTERNATIONAL MINING magazine, John Chadwick examines new technologies and applications from some of the key players in mineral flotation, a technique that is so important to the global industry.

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Gold Flotation - 911 Metallurgist

Jul 13, 2016  GOLD FLOTATION. The flotation process, which is today so extensively used for the concentration of base-metal sulphide ores and is finding increased use in many other fields. In 1932 flotation plants began to be installed for the treatment of gold and silver ores as a substitute for or in conjunction with cyanidation.

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De-inking Additives

Addition of talc and other detackifiers to the wet end can help keep stickies in check. The dosage of sizing agent may have to be increased to compensate for the adverse effects of increased surfactant levels on development of hydrophobicity. Defoamers and biocides may have to be increased or changed when de-inked pulp is first introduced.

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