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United Kingdom Patent Application GB 2171929 A, and The use of reagents in coal flotation, by Laskowski, J. S.; et al, Processing of Hydrophobic Minerals and Fine Coal, Proceedings of the UBC-McGill Bi-Annual International Symposium on Fundamentals of Mineral Processing, 1st, Vancouver, B. C., Aug. 20-24, 1995 (1995), pp. 191-197.
Sep 01, 2020· Carbonaceous material constituted by graphite in low and uneconomic quantities co-existing with copper sulphides ores is problematic to achieving selective flotation. The graphite surface properties are governed by the crystal structure characterised by covalent C C bonds (0.14 nm or 1.4 Å) in the hexagonal basal plane layer as illustrated in ...
Dec 31, 1995· The U.S. Department of Energy's Office of Scientific and Technical Information
3 · This patent application reiterates our engagement towards R&D, innovation, and environmental stewardship to drive greater sustainability into the battery value chain." Reducing the Environmental Impact of Graphite Purification . Graphite is the battery raw material that is currently the most dependent on China. Existing purification processes ...
Jul 17, 2018· Douglas H. Adamson has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO). Graphene/Graphite Polymer Composite Derived From Emulsions Stabilized by Graphene Kinetic ...
Apr 23, 2007· The present invention relates to the physical or chemical specific purification of natural mineral graphite. This purification is preferably applied to the surface of natural graphite in order to allow the formation of a passivation film during the first electrical discharge or the insertion of lithium in the graphite when the latter is used in a lithium-ion cell.
Graphite ore flotation is generally known and usually several purification steps are necessary to obtain a graphite ore concentrate. Shujuan and Meng, Adv. J. Food Sci. and Technology, 6 (2014), 989-993, disclose a process comprising three flotation steps of fine scaly graphite.
Several flotation methodologies like, pre graphite flotation, reverse graphite flotation are cited in literature, though could give good results with high grade ores, they failed with low grade ores containing high graphite content. Trials using different graphite depressants like nigrocene, depremin-c, Quebrecho were found not successful with ...
May 01, 1993· Dextrins are excellent depressants for hydrophobic coal flotation. In this work, the interaction of the dextrin with a hydrophobic solid, such as graphite, has been investigated through adsorption, electrokinetic, and flotation experiments. The …
[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 ...
Flotation column for low grade ores and coal fines. Beneficiation of low grade iron ores / fines / slimes. Beneficiation of BHQ to prepare pellet grade concentrate. Beneficiation of low grade chromites, Phosphates, antimony ores. Briquetting of fines and solid waste for recycling. Preparation of high purity graphite.
Jun 04, 1996· For example, U. S. Patent No. 4,912,068 describes the significant increase in hot strength made possible by using 99% pure flake graphite in magnesia-carbon brick. Flake graphite sold to certain battery markets requires a purity level of at least 99.9% carbon. Flake graphite sold to the expandable graphite market requires a purity of at least 96%.
We claim: 1. A method for manufacturing compacted graphite cast iron, comprising the steps of: (a) spraying a treatment alloy comprising graphite-modifying alloying agents, into a jet of molten low-sulfurous cast iron while discharging an amount of the molten low-sulfurous cast iron from a casting furnace or ladle, and thereby treating the amount molten low-sulfurous cast iron to provide a ...
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.
AMIT 145: Lesson 5 Froth Flotation – Mining Mill Operator Training . Initial flotation patent and application was developed for graphite by the Bessel High Aeration Rates; Low Energy Input; Typically Use for Deslime Circuit.
China Gold Flotation Separator Machine / Floatation Tanks For Sale .. Gold,Copper ore Floatation machine,Froth flotation,Floatation tank .. 0.15~ 24m3 Floatation Tank, Floatation Tank for Lead Silver Chrome Titanium Zinc. Get Price Froth flotation of ores Free Patents Online. Dec 07, …
patent graphite flotation - advasol. Graphite Flotation Techniques. this patent outlined a process for the flotation of graphite from ores using 1 to 10% of oil and listing more than 16 sources for Get Price > IM Graphite News in Brief 9 – 15 October | Industrial .
Jul 14, 2021· Toll milling and concentrate flotation of graphite ore derived from the Company's Vittangi project is underway with purification operations set to commence Q3 2021 to provide a feed for the EVA plant. Purified concentrate delivery is planned for Q4 2021, …
US Patent Application for Flotation Machine Rotor Patent. A rotor for flotation machines or flotation cells of flotation machines includes blades that are configured to provide improved bubble flow and bubble generation performance while also reducing the power requirements for rotating the rotor to generate bubble flow within a tank of a flotation cell used to generate froth.
Patents for B03D 101 - Specified effects produced by the flotation agents (940) 06/2013: 06/19/2013: CN101844112B Application of collecting agent in reverse floatation of bauxite : 06/19/2013 ...
Jan 18, 2021· Flotation. Figures 1 and 2 present lab scale batch flotation results from two separate studies, focusing on graphite and copper-activated pyrite, respectively. In Fig. 1, the baseline graphite recovery where no starch is used yields a recovery of 93.9 ± 0.5%.This decreases slightly to 82.3 ± 4.3% for NWS dosed at the lowest depressant dose of 120 g/t.
Lump-Vein graphite considered one of the rarest - Saint Jean Carbon. Given the carbon content typically found with lump/vein graphite recovery ... Lump/vein graphite is suitable for many of the same applications as flake ... of large concentrated samples to standard crushing, grinding, froth flotation and milling. Read more
The invention provides a flotation separation method of microcrystalline graphite and sulfide ore, which comprises the following steps: crushing raw ore, and performing ball milling to obtain 60-95% microcrystalline graphite ore powder with the fineness of-0.074 mm; adding water into the microcrystalline graphite mineral powder and stirring to obtain microcrystalline graphite ore pulp, …
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 ...
A method and apparatus system are disclosed for the beneficiation of kish to produce coarse high purity graphite wherein a concentrate containing at least about 90% carbon is formed, treated with a dilute acid solution, and the pulp then subjected to an adjuvant-assisted attrition to form a novel synthetic flake graphite of 99+ wt. % carbon with at least 70% of the mass retained on +100 mesh ...
Jan 04, 2017· A simple solution processing method is developed to achieve uniform and scalable stabilized lithium metal powder coating on Li-ion negative electrode. A solvent and binder system for stabilized lithium metal powder coating is developed, including the selection of solvent, polymer binder and enhancement of polymer concentration. The enhanced binder solution is 1% concentration of …
The flotation was effected in Fagergren flotation machines. In both cases the ore was 45 conditioned with soda ash and copper sulfate and the following flotation reagents used: secondary butyl xanthate, .36 lb./ton; a fifty-fifty mixture of sodium diethyl- and disecondarybutyl- dithiophosphates, 0.03 lb./ton; and pine oil, 0.123 lb./ton.
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, iron ores, coal, oil shale, and many other nonmetallics, but also soluble salts, oxides, and some uncommon materials from waste streams. Flotation techniques we have used in addition to the ordinary air-froth type include