منزل •patent graphite flotation

patent graphite flotation

  • Beneficiation of flake graphite - Harbison-Walker ...

    The rock containing the flake graphite must be ground to liberate the flake graphite and then the graphite is floated to separate the flakes from the rock and other impurities. Such flotation is accomplished by introducing an aqueous slurry of the ground mass into a stirred cell wherein the free graphite is separated from the gangue by oil ...

  • Effect of ultrasonication on the flotation of fine ...

    For each flotation group, 1 g of graphite powders was dispersed in the glass beaker for 2 min at an agitation speed of 500 r/min. After 2 min, the slurry was transferred into the Hallimond tube and continued dispersion on a magnetic stirrer (400 r/min) for another 1 min. Air was injected into slurry to form flotation bubbles with an aeration ...

  • FL's flotation REFLUX™ revolution - International Mining

    There is a big potential market across all the major flotation markets including, but not limited to, coal, gold tailings, graphite, iron ore, copper roughing, moly cleaning – where in every case the RFC is operating on the left hand side of the kinetics curve. "We are seeing recoveries beyond what is possible in a conventional benchtop ...

  • CN109604067A - A kind of separation method of graphite and ...

    The present invention relates to the separation methods of graphite in graphite ore and mica, contain mica in the graphite ore, during the flotation operation of graphite ore, addition includes the floating agent of cocounut oil acyl isethionic acid ester sodium and collecting agent, it realizes the separation of graphite and mica, obtains graphite concentrate.The present invention can ...

  • Evaluation of graphite depressants in a poly-metallic ...

    Synthetic dyes are commonly used for graphite depression in poly-metallic flotation circuits; however, these dyes can be very expensive. The aim of this study is to evaluate performance of certain low-cost alternative depressants for a complex lead-zinc (Pb-Zn) ore rich in graphite (Gr-C) on a conventional mini pilot-scale flotation circuit.

  • Flotation.pdf - 2019 10 02 Froth flotation Wikipedia Froth ...

    [3] Because the Bessel process was used on graphite not gold, silver, copper, lead, zinc, etc, their work has been ignored by most historians of the technology. Inventor Hezekiah Bradford of Philadelphia invented a "method of saving floating material in ore-separation" and received US patent No. 345951 on July 20, 1886. He had received his first patent in 1834, primarily invented machinery ...

  • 1 Froth Flotation – Fundamental Principles

    1 Froth Flotation – Fundamental Principles Froth flotation is a highly versatile method for physically separating particles based on differences in the ability of air bubbles to selectively adhere to specific mineral surfaces in a mineral/water slurry. The particles with attached air …

  • Molo Graphite Project, Toliara - Mining Technology ...

    Molo Graphite Project, Toliara. Located in the Fotadrevo village of Toliara province, Madagascar, the Molo graphite project is a superior-quality SuperFlake® graphite deposit, which is capable of achieving near battery-grade purity of 98% with simple flotation. The Molo graphite mine is a world-class SuperFlake® graphite mine being developed ...

  • US4533086A - Process for grinding graphite - Google Patents

    Disclosed is a process for grinding graphite comprising: (1) forming a mixture of graphite and a graphite grinding aid; (2) grinding the mixture of graphite and graphite grinding aid to reduce the size of the graphite; (3) forming an aqueous slurry of the graphite particles, graphite grinding aid and water; (4) adding an amount of hydrocarbon oil to the aqueous slurry with agitation to form ...

  • Graphite: Definition, Structure, Types, and Uses ...

    After graphite is mine, it usually requires a considerable amount of mineral processing like froth flotation to concentrate the graphite. Natural graphite is an excellent conductor of heat and electricity that is stable over a wide temperature range and is a high-strength material with a …

  • Ceylon Graphite Succeeds in Producing High-Performance ...

    Ceylon Graphite Corp. ("Ceylon Graphite") (TSX-V: CYL) (OTC: CYLYF) (FSE: CCY) is pleased to announce that it has achieved a significant breakthrough in the performance of its vein graphite anode material (C 99.995%) in coin cells for the lithium-ion ("Li-ion") battery market.

  • Minerals | Free Full-Text | Multi-Stage Flotation for the ...

    Graphite ore collected from Hunan province, south China was characterized by chemical analysis, X-ray diffraction, and optical microscopy. Rougher and multi-stage flotation tests using a mechanical flotation cell and a flotation column containing an additional centrifugal force field were carried out to promote its grade and economic value. In rougher flotation, both the mechanical flotation ...

  • CN101507948A - Cold condition fluorite flotation collector ...

    The invention discloses a collector for the floatation of fluorite at a low temperature. The collector comprises the following raw materials in weight portion: 35 to 45 portions of fatty alcohol polyethenoxy ether carboxylic acid sodium, 40 to 50 portions of sodium cetanesulfonate, and 8 to 12 portions of fatty acid methyl ester sodium sulfonate.

  • AMIT 145: Lesson 5 Froth Flotation – Mining Mill Operator ...

    Froth flotation is a physico-chemical separation process. Separation is principally based on differences in surface hydrophobicity. However, particle size and density have a significant impact. Initial flotation patent and application was developed for graphite by the Bessel brothers (1877). Similar to graphite, coal is naturally hydrophobic.

  • Flotation of graphite - ScienceDirect

    In graphite flotation, a variety of nonpolar oils such as kerosene and fuel oil are generally used in combination with frothers such as pine oil or higher alcohol. In many respects, graphite responds to flotation in a similar way to coal or molybdenite. The pH of the pulp is usually adjusted to about pH 8.

  • CN104961123A - Natural graphite ore ... - patents.google.com

    The invention discloses a natural graphite ore stripping and purifying method. The method includes: mixing, by mass, 30-50% of graphite ore powder, 1-5% of oxidant, 0.2-5% of organic intercalator and the balance water, and standing for soaking for 2-10h; stirring while illuminating for 1-2h; press-filtering, washing and drying; feeding 10-50% of graphite ore filter cake, 0.5-40% of organic ...

  • CN101973545A - Method for purifying high-purity graphite ...

    The invention discloses a method for purifying high-purity graphite, which aims to effectively remove impurities from the graphite and make 99.99 percent the fixed carbon content of the graphite. The method comprises the following steps of: performing the steps of crushing, ball-milling, sieving and the like on raw graphite ore and performing ore-dressing on the treated graphite ore by ...

  • Natural Deposits and Mining of Graphite - Chempedia - …

    In the flotation cells graphite flakes surrounded by air bubbles float to the surface, forming a graphite scum which is sucked off, centrifuged and dried. Purer graphite types with carbon contents > 99.5% require additional chemical refining, e.g. sodium carbonate digestion or hydrofluoric acid leaching.

  • SGS GRAPHITE CAPABILITIES

    flake (>80 mesh) graphite grading better than 95% carbon is suitable for use in lithium batteries. Flotation is a common means of processing graphite but other approaches can be necessary, depending on the concentrate grade required. Further upgrading of the flotation concentrate to grades greater than 99.5% carbon is generally achieved through

  • Froth Flotation | Hazen Research

    Froth flotation for separating discrete mineral particles from gangue was developed in the early 1900s and depends upon differences in the surface chemistry of the mineral species involved. At Hazen, our knowledge and experience in this field include the commonplace and the exotic. We have studied not only the flotation of sulfides, gold ores ...

  • Graphite Processing,Extraction,Crushing&Grinding Plant ...

    Expandable / expanded graphite making. Stage grinding-flotation process. It is necessary to undertake the lab test or even pilot test for determining primary flake size and liberation size, improving the TGC grade as high as possible, meanwhile to find the suitable grinding-flotation way to reserve the big flake size graphite. ...

  • Graphite ore flotation process introduction--CFCCARBON LTD

    Graphite ore flotation process is an efficient graphite ore deep processing technology, it can greatly increase the application of graphite ore area, selected graphite ore concentrate, can meet the diverse needs of various fields of production. In this case, Graphite natural floatability is very good, generally use the flotation method, with neutral oil can be harvested. But we should pay ...

  • US Patent for Process, apparatus, and system for ...

    A graphite product (e.g., graphite concentrate) is isolated via solid-liquid separation; for example, via centrifugation of the cleaner froth of Phase 2 flotation. The graphite product is potentially mixed with some plastic and paper, and may be further purified via: (i) low temperature chemical treatment involving multi-stage acid washing (e.g ...

  • Graphite flotation - GIESSEREILEXIKON.COM

    Graphite flotation. Graphite diffusing from cast iron melts rising to the top of the melt. In metallographic specimen floating graphite is very clearly identifiable even with low degree of magnification. At broken or machined surfaces, the diffused and floated spherolites can be identified as dark spots even with the unaided eye ( Figures 1 to 3 ).

  • Gratomic Provides Update on Aukam Vein Graphite Project ...

    The Company will be assisted by Robert Rice, the inventor and provisional patent-owner of the air-classification system that is being used in conducting the non-chemical refining process that is intended to upgrade the graphite concentrate from 99.38 to 99.98 %Cg for the purpose of achieving battery grade material.

  • Purification, application and current market trend of ...

    Graphite is a mineral exclusively composed of sp 2 p z hybridized carbon atoms with π-electrons, which is found in metamorphic and igneous rocks .It is an extremely soft slice and has a very low specific gravity, .Graphite is a good conductor of heat and electricity, and has a high regular stiffness and strength. Graphite (plumbago) can sustain its firmness and strength up to temperature ...

  • (PDF) Mineral Processing and Extractive Metallurgy Review ...

    In cleaning with attrition scrubbing could also be an effective 1877, this patent outlined a process for the flotation of gra- way to improve the selective separation of fine graphite phite from ores using 1 to 10% of oil and listing more than 16 (Grondin and St-Hilaire 1996; Lu and Forssberg 2001a, sources for the oil.

  • WO2009114404A2 - patents.google.com

    Disclosed herein are methods for removing discoloring impurities, such as carbon impurities, particularly graphite, from kaolin clay to enhance the brightness of the kaolin clays. The methods include reverse flotation processes. Also disclosed herein are high brightness kaolin products, and the uses thereof.

  • Flotation Reagents - Mineral Processing & Metallurgy

    This data on chemicals, and mixtures of chemicals, commonly known as reagents, is presented for the purpose of acquainting those interested in froth flotation with some of the more common reagents and their various uses.. Flotation as a concentration process has been extensively used for a number of years. However, little is known of it as an exact science, although, various …