Patent Of Iron Ore Process

Iron processing | Britannica

14-08-2020· First, in 1856, Henry Bessemer patented his converter process for blowing air through molten pig iron, and in 1861 William Siemens took out a patent for his regenerative open-hearth furnace.

US3672579A - Process for beneficiating magnetite iron ore ...

- Google Patents A process for upgrading low-grade magnetite-containing iron ore with minimum fine grinding. The dry ore is first comminuted to between about three-fourths inch and 10 mesh particle...

Microbial reduction of iron ore (Patent) | DOE 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 reduction of the ore.

Process for reduction of iron ores - Google Patents

ore temperature heating Prior art date 1962-10-16 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.) Expired - Lifetime Application number Inventor Greffe Andre Current Assignee (The listed assignees may be ...

Microbial reduction of iron ore(Patent) | DOE 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 reduction of the ore.

US3462263A - Reduction of iron ore - Google Patents

US3462263A US559865A US3462263DA US3462263A US 3462263 A US3462263 A US 3462263A US 559865 A US559865 A US 559865A US 3462263D A US3462263D A US 3462263DA US 3462263 A US3462263 A US 3462263A Authority US United States Prior art keywords iron slag reduction ore entities Prior art date 1965-08-11 Legal status (The legal status is an assumption and is not a legal …

CN101294243A - Pelletisation process for iron ore ...

2008-07-01 Priority to CN2008103024661A priority Critical patent/CN101294243B/en 2008-10-29 Publication of CN101294243A publication Critical patent/CN101294243A/en 2011-02-09 Application granted granted Critical ... Pelletisation process for iron ore concentrate sintered mix) (en) () ...

US3140168A - Reduction of iron ore with hydrogen - …

US3140168A US113817A US11381761A US3140168A US 3140168 A US3140168 A US 3140168A US 113817 A US113817 A US 113817A US 11381761 A US11381761 A US 11381761A US 3140168 A US3140168 A US 3140168A Authority US United States Prior art keywords hydrogen reduction iron step ore Prior art date 1961-05-31 Legal status (The legal status is an assumption and is not a legal …

Iron Ore Processing - Schenck Process

Working with Iron Ore industry to improve recovery. Products: Train Loading System, Vibrating screen, Vibrating feeder, etc. Schenck Process has been an international expert at iron ore processing. Our applications, ranging from weighing, feeding, screening and automation, are suitable for different kinds of iron ore processing to enhance the ...

Microbial reduction of iron ore(Patent) | DOE 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 ...

US4132546A - Smelting of iron ore with partially dried ...

Improved production of pig iron is effected with lump lignite or sub-bituminous coal that have been heated in hot water or steam under elevated pressure sufficient so that water does not change into steam. High moisture content lignite and sub-bituminous coal, which normally cannot be used in blast furnaces because of slacking, are partially dried by this treatment.

Production of iron sponge from iron ore (Patent) | …

OSTI.GOV Patent: Production of iron sponge from iron ore. Production of iron sponge from iron ore. Full Record; Other Related Research

Ore pretreatment process - EXXON ... - Free Patents Online

While the process of the present invention has been described in terms of preparing a feed material for a fluidized iron ore reduction process which contains below 0.2 wt. % sulfur, and below 0.10 wt. % phosphorus, it can be readily appreciated by those skilled in the art that the process is equally adaptable for preparing ore concentrates for other direct ore reduction processes.

US Patent # 4,206,878. Beneficiation of iron ore - …

Iron ore is beneficiated using separation steps based on mineral composition without the use of separation steps based entirely on size. ... At Patents you can conduct a Patent Search, File a Patent Application, ... recycling the tailings of the flotation process to the grinding step.

Process for the optimized production of iron ore pellets ...

WO 2014/015403 PCT/BR2013/000263 1 PROCESS FOR THE OPTIMIZED PRODUCTION OF IRON ORE PELLETS This application claims priority from U.S. Patent Application No. 61/674,633, titled "Process Optimized for the Production of Ore Pellets," filed on July 23, 2012, and which is incorporated herein by reference in its entirety. 5 FIELD OF THE INVENTION Aspects of the present invention …

Iron Ore Processing for the Blast Furnace

blast furnace process. The iron ore concentrate is now mixed and ready for the pelletizing process. Pelletizing A pellet plant contains a series of balling drums where the iron ore concentrate is formed into soft pellets, in much the same manner that one rolls a snowball, to make a pellet about the size of a marble (between 1/4" and 1/2").

Iron Ore Processing - Schenck Process

Working with Iron Ore industry to improve recovery. Products: Train Loading System, Vibrating screen, Vibrating feeder, etc. Schenck Process has been an international expert at iron ore processing. Our applications, ranging from weighing, feeding, screening and automation, are suitable for different kinds of iron ore processing to enhance the ...

Iron ore - Wikipedia

Iron ore being unloaded at docks in Toledo, Ohio. Iron ores are rocks and minerals from which metallic iron can be economically extracted. The ores are usually rich in iron oxides and vary in color from dark grey, bright yellow, or deep purple to rusty red. The iron is usually found in the form of magnetite (Fe 3 O 4, 72.4% Fe), hematite (Fe 2 O 3, 69.9% Fe), goethite (FeO(OH), 62.9% Fe ...

The Six Main Steps of Iron Ore Processing | Multotec Canada

When the iron ore is extracted from the mine, it must undergo several processing stages. Six steps to process iron ore 1. Screening We recommend that you begin by screening the iron ore to separate fine particles below the crusher’s CSS before the crushing stage. A static screen is used to divert...

Production of iron sponge from iron ore (Patent) | …

OSTI.GOV Patent: Production of iron sponge from iron ore. Production of iron sponge from iron ore. Full Record; Other Related Research

US Patent # 4,206,878. Beneficiation of iron ore - …

Iron ore is beneficiated using separation steps based on mineral composition without the use of separation steps based entirely on size. ... At Patents you can conduct a Patent Search, File a Patent Application, ... recycling the tailings of the flotation process to the grinding step.

Process for the production of pig iron - US Patent

Process for the production of pig iron Abstract. A process for the production of pig iron from iron ore is disclosed. The pig iron is firstly converted to sponge iron in a direct reduction shaft furnace (1) and then the sponge iron is converted to pig iron in a melt-down gasifier (2).

Process for the optimized production of iron ore pellets ...

WO 2014/015403 PCT/BR2013/000263 1 PROCESS FOR THE OPTIMIZED PRODUCTION OF IRON ORE PELLETS This application claims priority from U.S. Patent Application No. 61/674,633, titled "Process Optimized for the Production of Ore Pellets," filed on July 23, 2012, and which is incorporated herein by reference in its entirety. 5 FIELD OF THE INVENTION Aspects of the present invention …

dry magnetic separation of iron ore process

Patent US3672579 - Process for beneficiating magnetite iron ore ... A process for upgrading low-grade magnetite-containing iron ore with minimum fine ... about 20 and 100 mesh and again subjected to dry magnetic separation.

(PDF) Cold briquetting of iron ore fines for DRI ...

The third one-RECYRON®-is a patent-pending technology which has been developed in Austria. RECYRON® is a highly flexible process to utilize fine ore as well as ... The iron ore fines cannot ...

Patents Assigned to Process Research Ortech, Inc. - Justia ...

Abstract: A process for leaching a value metal from a titaniferous ore material comprising the step of leaching the ore material at atmospheric pressure with a lixiviant comprising magnesium chloride and hydrochloric acid is disclosed. Iron and titanium are leached into solution. Iron in the ferric state may be separated from titanium in solution using extraction with alkyl ketone.

Flow sheet Iron ore site - schenckprocess.com

Flow sheet iron ore site. Process steps shown in green are covered by the Schenck Process Group. Hover your mouse over the products shown in green to display more information. Download flow sheet as …

Iron ore mining - Schenck Process

Iron ore mining Working with Iron Ore industry to improve recovery. Schenck Process has been active in iron ore mining for more than 20 years by providing its special separation and vibrating solutions to enhance the iron ore recovery rate. We have built up deep relationships with largest iron ore producers.

Patents Assigned to BHP Billiton SSM Development Pty Ltd ...

The process includes providing a laterite or partially oxidized laterite ore wherein a substantial proportion of the iron present in the ore is in the ferrous state; acid leaching the ore to provide a product leach solution containing at least ferrous iron, nickel and cobalt together with acid soluble impurities; and recovering the nickel and cobalt from the product leach solution with a ...

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