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patent on iron ore processing

Home patent on iron ore processing

Dry Processing - Vale

Today, most of our iron ore production (about 60%) is through dry processing. The natural moisture processing is used at Carajás and Serra Leste mines, at S11D Eliezer Batista complex, in Pará, and at several plants in Minas Gerais.

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Process for the thermal treatment of granulated iron ore ...

1. A process for the thermal treatment of granular, moist iron ore prior to the reduction thereof, which comprises drying the moist ore by passing it through a drying zone, and heating the ore in said drying zone to a temperature in the range from 120 to 400° C., and then separating at least a portion of said dried ore into a course-grained fraction and a fine-grained fraction in a separator ...

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New dry iron ore processing technology developed ...

May 26, 2016· In doing this, the company can produce a highly pure iron ore concentrate in an industrial scale by obtaining a premium product of up to 68 per cent iron, as well as being able to make use of ...

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William Kelly (inventor) - Wikipedia

William Kelly (August 21, 1811 – February 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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US2799572A - Iron ore pelletizing process and product ...

US2799572A US346786A US34678653A US2799572A US 2799572 A US2799572 A US 2799572A US 346786 A US346786 A US 346786A US 34678653 A US34678653 A US 34678653A US 2799572 A US2799572 A US 2799572A Authority US United States Prior art keywords refractory material bodies pellets iron ore fines Prior art date Legal status (The legal status is an assumption and is …

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Iron Ore Processing - Schenck Process

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 recovery rate.

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Indian Patents. 265729:AGGLOMERATED STONE FOR USING IN ...

A detailed illustration of the prior art in the technique of pallatising metal oxide containing, fine-particle iron ore dust is to be found in German Patent DE 33 07 175 Al. With the pellets produced by pelletising a uniform particle size, compared with lump ore, constant quality ... In the extraction and processing of iron ore, large ...

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Iron processing - Ores | Britannica

Iron processing - Iron processing - Ores: Iron ores occur in igneous, metamorphic (transformed), or sedimentary rocks in a variety of geologic environments. Most are sedimentary, but many have been changed by weathering, and so their precise origin is difficult to determine. The most widely distributed iron-bearing minerals are oxides, and iron ores consist mainly of hematite (Fe2O3), which is ...

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Beneficiation of Iron Ore - Mineral Processing & Metallurgy

Brazilian pany patents innovative dry iron ore. New plants are in the process of getting environmental licenses in Brazil In the USA, negotiations to implement the new technology are underway Dry iron ore processing The mining activity produces lots of materials with no mercial value That is because the iron ore traded in the market must be posed of at least 58% of ore

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Iron Ore - Leaders in Mineral Processing Worldwide

Iron Ore Beneficiation Solutions Across Project Lifecycle. Metallurgical Testing. To be confident in investing in a project, you need to know that the separation process will work on start-up and throughout the life of the operation.

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Hydrogen Plasma Processing of Iron Ore | SpringerLink

Mar 16, 2017· Iron is currently produced by carbothermic reduction of oxide ores. This is a multiple-stage process that requires large-scale equipment and high capital investment, and produces large amounts of CO2. An alternative to carbothermic reduction is reduction using a hydrogen plasma, which comprises vibrationally excited molecular, atomic, and ionic states of hydrogen, all of which can reduce iron ...

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US9315878B2 - System and method for iron ore byproduct ...

Processing byproduct material from a direct reduction process of iron ore to reclaim iron and other materials from the byproduct. The systems and methods employ gravity separation tables to separate the iron from other byproduct material constituents. The byproduct material constituents may be size reduced, processed to remove dust, and sized prior to processing by the gravity separation.

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Gravity separation of ultra-fine iron ore in the REFLUXTM ...

The REFLUX™ Classifier is a recently developed water-based gravity separation technology that is already being used worldwide to beneficiate particles above 0.100 mm in size. This paper reports tests performed on an ultra-fine iron ore with nominal top size of 0.106 mm, but with 59 wt-% being below 0.038 mm in size. The REFLUX™ Classifier consists of a set of parallel inclined channels ...

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(PDF) Processing of Magnetite Iron Ores–Comparing Grinding ...

Kiruna iron ore deposit (Kiirunavaara) operated by LKAB is the world's largest and most modern underground iron mine (McNab et al., 2009; Poveromo, 2000). Mining in Kiruna started in 1902 shortly ...

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Patent of iron ore process - luebeckerbridgeclub.de

Brazilian pany patents innovative dry iron ore. New plants are in the process of getting environmental licenses in Brazil In the USA, negotiations to implement the new technology are underway Dry iron ore processing The mining activity produces lots of materials with no mercial value That is because the iron ore traded in the market must be posed of at least 58% of ore

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IRON ORE PROCESSING PLANT - YouTube

Oct 27, 2011· 700TPH Iron Ore Wash Beneficiation Plant in Australia - Simec Mining - CDE Projects - Duration: 2:53. CDE Global 3,256 views

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Magnetic Separation and Iron Ore Beneficiation – IspatGuru

Oct 04, 2018· Magnetic Separation and Iron Ore Beneficiation. Magnetic separation is an old technique for the concentration of iron ores and for the removal of tramp iron. Since 1849, a number of patents on magnetic separation have been issued in USA, and texts of some of the patents before 1910 describe a variety of magnetic separators for mineral processing.

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Processing of Lean Iron Ores by Dry High Intensity ...

Dry high intensity magnetic separation (DHIMS) is investigated to process a lean hematite ore. It was found the feed particle size and the drum rotation speed have significant influences on the ...

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Microbial reduction of iron ore (Patent) | DOE Patents

This patent provides a method of reducing sponge iron ore. The process consists of reacting a solid carbonaceous fuel with a gas containing at least 85% oxygen at temperatures suitable for the reduction of sponge iron ore to produce a reducing gas containing at …

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Iron processing | Britannica

Iron processing, use of a smelting process to turn the ore into a form from which products can be fashioned.Included in this article also is a discussion of the mining of iron and of its preparation for smelting. Iron (Fe) is a relatively dense metal with a silvery white appearance and distinctive magnetic properties. It constitutes 5 percent by weight of the Earth's crust, and it is the ...

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BETHLEHEM PATENTS IRON ORE PROCESS - The New York Times

BETHLEHEM PATENTS IRON ORE PROCESS. Oct. 13, 1961 ... The Bethlehem Steel Company said that millions of tons of previously unusable iron ores found in the Lake Superior region and in foreign ...

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Pilbara Iron Ore Processing Plant - YouTube

Jun 20, 2016· Pilbara Iron Ore Processing Plant. 25Mtpa iron ore plant complete with crushing, screening, fines & lump stacking and reclaim systems, and train loadout facilities. Worlds best iron ore processing ...

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patent of iron ore process - belgiumdivingschool.be

Patent US4301973 A commercial operation based on the above process is in operation in North America for processing a fine grained iron ore The process is a, Citerend patent...

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Introduction: overview of the global iron ore industry ...

Turning to iron ore exports and imports, the tonnages are summarized in Table 1.1 for 2012 and 2013 (BREE). China is also the largest iron ore-importing country and imported about 65% of the world's seaborne iron ore in 2013, followed by Japan (11%), Europe (10%), and Korea (6%) as shown in Figure 1.3.These imports are clear indicators of iron ore consumption and that the Asian countries ...

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Machine

Process of producing pig iron from iron ore . · We claim: 1. In a process for producing pig iron by reducing iron ore concentrate in which solid pre-reduced 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 ...

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Iron ore - The RuneScape Wiki

Iron ore is an ore that can be obtained through mining iron rocks, requiring level 10 Mining, in various places around RuneScape.. Iron is required to craft iron and steel bars, and is also a tertiary ingredient for creating granite crab pouches.As players increase their Mining level and use higher tier pickaxes, they are able to mine iron at quicker rates.

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Beneficiation of Iron Ore - Mineral Processing & Metallurgy

Beneficiation of Iron Ore and the treatment of magnetic iron taconites, stage grinding and wet magnetic separation is standard practice.This also applies to iron ores of the non-magnetic type which after a reducing roast are amenable to magnetic separation. All such plants are large tonnage operations treating up to 50,000 tons per day and ultimately requiring grinding as fine as minus 500 ...

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Iron Ore - 290 Mt/a infrastructure overview - YouTube

Sep 27, 2013· Rio Tinto has undertaken Australia's largest integrated mining project over recent years with the expansion of its Pilbara iron ore operations to 290 Mt/a capacity. The project has included ...

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Environmental impact of iron ore mining - Wikipedia

Introduction Iron ore. Iron ore is rock containing enough iron content, and in sufficient volume and accessibility to mining and transportation to be able to be economically mined. Iron in ore iron is most commonly found in the form of magnetite (Fe 3 O 4), hematite (Fe 2 O 3), goethite (FeO(OH)), limonite (FeO(OH)·n(H 2 O)) or siderite (FeCO 3).Roughly 98% of iron ore on the global market is ...

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Iron Ore,Production Process of Iron Ore,Iron Ore ...

Iron ore is an important raw material for iron and steel production enterprises. After crushing, grinding, magnetic separation, gravity concentration etc, gradually we can get iron from natural minerals (iron ore). It is the mineral aggregates that contain iron or iron compounds which can be used economically. Production Process of Iron Ore ...

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Iron Ore Beneficiation Process - 911metallurgist.com

The whole process of magnetic concentration as applied to the eastern Mesabi magnetites is a good illustration of the manner in which the various types of machines can be made to work together so as to produce a high-grade furnace product from an ore material containing only 25 per cent of iron …

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Australia reassures on China iron ore processing changes ...

May 21, 2020· Benchmark iron ore prices hit an eight-month high of $98.20 a tonne in Shanghai trade on Thursday. According to China customs data, 65% of China's iron ore …

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Processing - LKAB

The processing takes place in three stages: sorting, concentration and pelletizing. Once the iron ore concentrate has passed the pelletizing plant, the end product – small, round iron ore balls, known as iron ore pellets – is ready for onward transport to our customers.

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patent of iron ore process

patent of iron ore process - spitsid Iron ore is converted into Benjamin Huntsman took out a patent for the melting of The process of extracting iron from ore produces great Iron Ore Agglomeration Processes and their Historical Pelletizing of iron ore is a method of Swedish origin, patented in 1912 by AG Andersson (Yamaguchi et al., 2010).

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