the patent for the processing of iron ore

  • Microbial reduction of iron ore PatentDOE Patents

    A process is provided for reducing iron ore by treatment with microorganisms which comprises forming an aqueous mixture of iron ore, microorganisms operable for reducing the ferric iron of the iron ore to ferrous iron, and a substrate operable as an energy source for the microbial reduction; and maintaining the aqueous mixture for a period of time and under conditions operable to effect the

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  • METHOD FOR PROCESSING IRON ORE CONCENTRATESSTEEL

    METHOD FOR PROCESSING IRON ORE CONCENTRATES . United States Patent 3791595 . Abstract: A water slurry of an iron ore concentrate from concentration equipment, for example, magnetic separators in a primary circuit containing fine high grade mineral particles, coarse low grade middling particles and coarse high grade mineral particles, is pumped

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  • Iron Ore Agglomeration Processes and their Historical

    Dec 28, 2015Pelletizing of iron ore is a method of Swedish origin, patented in 1912 by AG Andersson Yamaguchi et al., 2010. The process was developed in the USA in the 1940s, and the first commercial plant started operation in Babbitt, Minnesota in 1952. The first iron ore pellet plant of the gratekiln type was established at Humboldt Mine, Michigan in

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  • US Patent Application for IRON ORE CONCENTRATION PROCESS

    Oct 25, 2013Justia Patents Liquids Added To Classify Or Separate Material US Patent Application for IRON ORE CONCENTRATION PROCESS WITH GRINDING CIRCUIT, DRY DESLIMING AND DRY OR MIXED DRY AND WET CONCENTRATION Patent Application Application #20140117125

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  • PDF Iron Ore Sintering: ProcessResearchGate

    Sintering is a thermal agglomeration process that is applied to a mixture of iron ore fines, recycled ironmaking products, fluxes, slagforming agents and solid fuel coke.

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  • Process for iron ore pellets productionCompanhia, Vale

    The present invention concerns a process for iron ore pellets production comprising at least one iron ore crushing stage in a roller press for the production of iron ore pellets. The crushing stages can be done prior or after grinding, or still defined by successive passages

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  • iron ore processing cost patent

    Since its establishment in 1987, we has always focused on the RD and manufacturing of largescale equipment required for national infrastructure construction projects such as mines, buildings, and energy.

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  • Microbial reduction of iron ore PatentDOE Patents

    Abstract. A process is provided for reducing iron ore by treatment with microorganisms which comprises forming an aqueous mixture of iron ore, microorganisms operable for reducing the ferric iron of the iron ore to ferrous iron, and a substrate operable as an energy source for the microbial reduction; and maintaining the aqueous mixture for a period of time and under conditions operable to

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  • iron ore processing cost patent

    Since its establishment in 1987, we has always focused on the RD and manufacturing of largescale equipment required for national infrastructure construction projects such as mines, buildings, and energy.

    Inquire Now
  • Processes and Procedures in the Extraction of Iron

    The extraction of iron from its ores is quite a technical process. The iron ore is first roasted in air to produce ironIII oxide which is mixed with coke and limestone and then further heated to a very high temperature in a blast furnace. These materials are loaded into the blast furnace from the top while a blast of hot air is introduced into it from beneath via small pipes known as tuyeres.

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  • PLASMA HEATED FURNACE FOR IRON OREJustia Patents

    Dec 03, 2012In the face of shrinking world reserves of highgrade iron ore, lowgrade ores are used, which must be concentrated before further processing. The concentrated iron ore fines obtained cannot be used as such, for example in a blast furnace to produce pig iron or to produce sponge iron in a direct reduction iron plant DRI.

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  • Brazilian company patents innovative dry iron ore

    Brazilian company patents innovative dry iron ore processing method in Brazil and in the US. Tuesday, May 10th, 2016. The new technique was awarded the Platts Global Metals Awards 2015, considered the Oscar of mining, in the innovation category.

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  • PDF Iron Ore Sintering: ProcessResearchGate

    Sintering is a thermal agglomeration process that is applied to a mixture of iron ore fines, recycled ironmaking products, fluxes, slagforming agents and solid fuel coke.

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  • How iron is madematerial, manufacture, making, history

    Iron ore is converted into various types of iron through several processes. The most common process is the use of a blast furnace to produce pig iron which is about 9294% iron and 35% carbon with smaller amounts of other elements.

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  • BINDER COMPOSITIONS AND PROCESSES OF PREPARING IRON

    Aug 06, 2012Binder compositions for agglomerating iron ore fines are provided, the compositions comprising: a about 30 to about 80% by weight one or more types of anionic or nonionic acrylamidecontaining polymer; b about 10 to about 35% by weight one or more types of inorganic or organic monomeric electrolyte; and c about 10 to about 35% one or more types of finely ground wood fiber.

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  • Process of producing pig iron from iron ore concentrate

    We claim: 1. In a process for producing pig iron by reducing iron ore concentrate in which solid prereduced iron ore, coal, oxygen gas, and slag formers are injected beneath the surface of a molten iron bath contained in a reactor vessel, and react to produce said pig iron, slag, and exhaust gases including CO 2, CO, H 2 and H 2 O, the improvement comprising:

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  • Iron Ore . Understanding Your Vision. We know that not all Iron Ore deposits are the same and changing commodities prices are placing higher demands on producers to sweat the assets through process improvements, and increase revenues by converting tailings. Thats why understanding your project objectives and opportunities is our

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  • US9315878B2System and method for iron ore byproduct

    This nonprovisional patent application claims priority under 35 U.S.C. Inquire Now

  • Iron ore refining methodThe BOC Company, Inc.

    An iron ore refining method in which a secondary reactor is employed for partly reducing iron ore and partly oxidizing a carbon containing substance to form partly reduced secondary iron ore, the coal char and a calorific containing carbon dioxide and carbon monoxide in a ratio of no less than about 0.25.

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  • Iron Ore Pelletizing Process: An OverviewIntechOpen

    Jul 10, 2017The iron ore production has significantly expanded in recent years, owing to increasing steel demands in developing countries. However, the content of iron in ore deposits has deteriorated and lowgrade iron ore has been processed. The fines resulting from the concentration process must be agglomerated for use in iron and steelmaking. This chapter shows the status of the pelletizing process

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  • Processes and Procedures in the Extraction of Iron

    The extraction of iron from its ores is quite a technical process. The iron ore is first roasted in air to produce ironIII oxide which is mixed with coke and limestone and then further heated to a very high temperature in a blast furnace. These materials are loaded into the blast furnace from the top while a blast of hot air is introduced into it from beneath via small pipes known as tuyeres.

    Inquire Now
  • Pig Iron Manufacturing Process

    Table of ContentsElectric Furnace Production of Pig SteelMaking Pig Iron by Electric Furnace Regulation of CarbonPig Iron ImpuritiesLoss of Iron in the SlagAdaptability of the Process to Continuous OperationCost of Production of Pig IronPig Iron At the beginning of the use of the electric furnace, for the manufacture of calcium carbide and ferroalloys, experimental work was conducted in it

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  • PLASMA HEATED FURNACE FOR IRON OREJustia Patents

    Dec 03, 2012In the face of shrinking world reserves of highgrade iron ore, lowgrade ores are used, which must be concentrated before further processing. The concentrated iron ore fines obtained cannot be used as such, for example in a blast furnace to produce pig iron or to produce sponge iron in a direct reduction iron plant DRI.

    Inquire Now
  • US2894831AProcess of fluidized bed reduction of iron

    US2894831A US624861A US62486156A US2894831A US 2894831 A US2894831 A US 2894831A US 624861 A US624861 A US 624861A US 62486156 A US62486156 A US 62486156A US 2894831 A US2894831 A US 2894831A Authority US United States Prior art keywords reducing particles zone preheating furnace Prior art date 19561128 Legal status The legal status is an assumption and is

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  • The Use of Hydrogen in the Iron and Steel Industry

    virgin iron added to dilute the tramp elements such as copper and zinc to improve final product qualityDRID irect R educed I ron is one of the iron products added to the scrap to increase purityDRI is iron ore that has been reduced to iron with syngas without meltingDRI processes in U.S. generally use natural gas to reduce

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  • Microbial reduction of iron ore PatentDOE Patents

    Abstract. A process is provided for reducing iron ore by treatment with microorganisms which comprises forming an aqueous mixture of iron ore, microorganisms operable for reducing the ferric iron of the iron ore to ferrous iron, and a substrate operable as an energy source for the microbial reduction; and maintaining the aqueous mixture for a period of time and under conditions operable to

    Inquire Now
  • Microbial reduction of iron ore PatentDOE Patents

    A process is provided for reducing iron ore by treatment with microorganisms which comprises forming an aqueous mixture of iron ore, microorganisms operable for reducing the ferric iron of the iron ore to ferrous iron, and a substrate operable as an energy source for the microbial reduction; and maintaining the aqueous mixture for a period of time and under conditions operable to effect the

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  • US4405588AProcess of removing ironGoogle Patents

    A process of removing iron impurities from ores, particularly useful for removing stains of iron impurities adhered to silica sand particles, comprises grinding the ore, washing and desliming the ground ore to remove the major part of the claytype binder, attritionscrubbing the deslimed particles to release further amounts of binder therefrom, washing and desliming to remove said binder

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  • William Kelly inventorWikipedia

    William Kelly August 21, 1811February 11, 1888, born in Pittsburgh, Pennsylvania, was an American inventor.He is credited with being one of the inventors of modern steel production, through the process of injecting air into molten iron, which he experimented with in the early 1850s. A similar process was discovered independently by Henry Bessemer and patented in 1855.

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  • Pig Iron Manufacturing Process

    Table of ContentsElectric Furnace Production of Pig SteelMaking Pig Iron by Electric Furnace Regulation of CarbonPig Iron ImpuritiesLoss of Iron in the SlagAdaptability of the Process to Continuous OperationCost of Production of Pig IronPig Iron At the beginning of the use of the electric furnace, for the manufacture of calcium carbide and ferroalloys, experimental work was conducted in it

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  • Hazer Group obtains patents for its hydrogen and graphite

    Dec 17, 2018Technology development company Hazer Group ASX: HZR has been granted two innovation patents and had the application for its first Australian patent accepted in relation to its lowemission hydrogen and graphite production process.. The company today announced acceptance by the Australian patent office of an application covering aspects of its Hazer Process, with the

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  • US Patent for Iron ore concentration process with grinding

    Oct 25, 2013US Patent for Iron ore concentration process with grinding circuit, dry desliming and dry or mixed dry and wet concentration Patent Patent # 10,207,275 issued February 19, 2019Justia Patents Search Iron ore concentration process with grinding circuit, dry desliming and dry or mixed dry and wet concentration Oct 25, 2013VALE S.A.

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  • Iron oreWikipedia

    Iron ore is the raw material used to make pig iron, which is one of the main raw materials to make steel98% of the mined iron ore is used to make steel. In 2011 the Financial Times has speculated that iron ore is more integral to the global economy than any other commodity, except perhaps oil .

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  • Frank M. Stephens, Jr. Inventions, Patents and Patent

    Abstract: The object of the invention is to provide a process for the recovery of iron and nickel from low iron content laterite ores.Said process comprises subjecting the ore to a carburizing step in the presence of a reducing agent and carbon supplying agent to convert the iron to iron carbide, followed by smelting the residue or product of

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  • US4556417AProcess for the direct reduction of iron ores

    Google Patents The present invention relates to a process for the production of metallic iron through direct reduction of iron ores and particularly to an optimized process which permits

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  • US3672579AProcess for beneficiating magnetite iron ore

    A process for upgrading lowgrade magnetitecontaining iron ore with minimum fine grinding. The dry ore is first comminuted to between about threefourths inch and 10 mesh particle size and magnetically separated. The dry tailing is discarded and the concentrate is ground to between about 20 and 100 mesh and again subjected to dry magnetic separation.

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  • Hazer Group obtains patents for its hydrogen and graphite

    Dec 17, 2018Technology development company Hazer Group ASX: HZR has been granted two innovation patents and had the application for its first Australian patent accepted in relation to its lowemission hydrogen and graphite production process.. The company today announced acceptance by the Australian patent office of an application covering aspects of its Hazer Process, with the

    Inquire Now
  • BINDER COMPOSITIONS AND PROCESSES OF PREPARING IRON ORE

    Binder compositions for agglomerating iron ore fines are provided, the compositions comprising: a about 30 to about 80% by weight one or more types of anionic or nonionic acrylamidecontaining polymer; b about 10 to about 35% by weight one or more types of inorganic or organic monomeric electrolyte; and c about 10 to about 35% one or more types of finely ground wood fiber.

    Inquire Now