US2415376A - Electromagnetic means for feeding a ...

230000005291 magnetic Effects 0.000 description 12 230000014759 maintenance of location Effects 0.000 description 5 Electromagnetic means for feeding a ferromagnetic charge to a furnace

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Reduction roast and magnetic separation of oxidized iron ...

Jun 01, 1998  Low grade oolitic iron ore from the Aswan locality, assaying 45.23% Fe and 23.93% insoluble residue, was tested for concentration using reduction roasting and subsequent low intensity magnetic separation for the production of blast furnace feed. The ore is a low grade, high phosphorus, and high alumina oolitic hematite.

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Recent Advances in Magnetization Roasting of Refractory ...

magnetic iron oxides such as hematite [Fe 2O 3], limonite ... China was established. Shaft furnace roasting-magnetic ... Ore feeding Figure 1. Process and material flows diagram of shaft furnace ...

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Induction Heating Magnetic Iron With RF Heating System

Material Magnetic iron oxide in water (magnetic field is 50-200kHz, 30kA/m), glass vial. Temperature Varies. Frequency 344 kHz. Equipment • DW-UHF-4.5kW induction heating system, equipped with a remote workhead containing two 0.33μF capacitors for a total of 0.66 μF. • An induction heating coil designed and developed specifically for this ...

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US20070157761A1 - Use of an induction furnace for the ...

iron induction furnace ore iron ore furnace Prior art date 2006-01-11 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.) Granted Application number US11/329,846 Other versions US7413590B2 (en Inventor James ...

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US2415376A - Electromagnetic means for feeding a ...

230000005291 magnetic Effects 0.000 description 12 230000014759 maintenance of location Effects 0.000 description 5 Electromagnetic means for feeding a ferromagnetic charge to a furnace

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11.23 Taconite Ore Processing

magnetite is the principal iron mineral, the rock is called magnetic taconite; if hematite is the principal iron mineral, the rock is called hematic taconite. ... W Grate/kiln furnace feed 3-03-023-49 X Straight grate furnace feed 3-03-023-79 Y Vertical shaft furnace feed 3-03-023-69

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Removal of Black Powder and Other Contaminants in

Besides furnace feed gas, fuel gas to the furnace can also contain contaminants. Fuel gas used as the ... iron oxide (hematite, Fe 2O 3) and magnetic iron sulfide or greigite (Fe 3S 4). For LPG or propane stored in a brine well, it is also common to find salt (NaCl) at minor levels, indicating

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Understanding the high-grade iron ore market

DR furnace, however, iron oxide is reduced in situ, with temperatures sufficient to remove the oxygen but not high enough to fully melt the ore. No fluxes are introduced to remove impurities from the final direct-reduced iron (DRI) either. For this reason, silica and alumina levels in iron ores entering the DR furnace

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Control of Slag and Insoluble Build-up in Melting Furnaces

Slag Composition: The composition of furnace and ladle slags is often very complex. The slags that form in electric furnace melting result from complex reactions between silica (adhering sand on casting returns or dirt), iron oxide from steel scrap, other oxidation byproducts from

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Hydrogen Reduction of Hematite Ore Fines to Magnetite Ore ...

Surplus coke oven gases (COGs) and low grade hematite ores are abundant in Shanxi, China. Our group proposes a new process that could simultaneously enrich CH 4 from COG and produce separated magnetite from low grade hematite. In this work, low-temperature hydrogen reduction of hematite ore fines was performed in a fixed-bed reactor with a stirring apparatus, and a laboratory Davis magnetic ...

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Rotary Kiln in Magnetic-Reduction Roasting

Feb 14, 2020  The only large-scale rotary kiln plant for magnetic-reduction roasting was designed by Lurgi-Chonle, of Frankfurt, Germany, and built at Watensttev-Salzgitter prior to World War II. Lurgi reports that these 3.6-meter diameter by 50 meter long kilns were designed for a throughput of 800 tons/day, but actually achieved a throughput of 1150 tons/day.

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Magnetic Separation - an overview ScienceDirect Topics

Magnetic filtration has been applied in place of lime treatment by Feng and coworkers (2000).Ultrafine magnetic particles are used as magnetic seeds. At a dosage of 0.5 g/L magnetite, all fine precipitate flocs can be rendered strongly magnetic. The mine water is treated with hydrogen peroxide (to oxidize ferrous iron and manganese), followed by the addition of lime and magnetite to raise the ...

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Induction furnace - Wikipedia

An induction furnace is an electrical furnace in which the heat is applied by induction heating of metal. Induction furnace capacities range from less than one kilogram to one hundred tons, and are used to melt iron and steel, copper, aluminum, and precious metals.. The advantage of the induction furnace is a clean, energy-efficient and well-controlled melting process, compared to most other ...

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What is the magnetic difference between steel and iron ...

Answer (1 of 4): At room temperature, the structure of pure iron is body centered cubic (BCC). When you add Carbon, other structures can be formed that are not BCC. Martensite is body centered tetragonal (BCT), Austenite is face centered cubic (FCC). Fe3C is called carbide, it is a ceramic and is...

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Reduction Roast and Magnetic Separation of Oxidized Iron ...

Low grade oolitic iron ore from the Aswan locality, assaying 45.23% Fe and 23.93% insoluble residue, was tested for concentration using reduction roasting and subsequent low intensity magnetic separation for the production of blast furnace feed. The ore is a low

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Pellet, iron ore concentrste, sintered iron ore: buy from ...

Iron ore concentrate is produced from the magnetite iron ore in the beneficiation process and is used for the production of pellets for blast furnaces and sinter. The concentrates are non-toxic, non-flammable and non-explosive. The concentrate is shipped as a bulk commodity by rail using the open-top rolling stock and by sea. Manufacturer: SevGOK.

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A Study on High-Grade Iron ore Beneficiation to Reduce ...

May 21, 2020  Therefore higher iron ore feed content to blast furnace is always preferred. Indian hematite, though rich in iron content has a higher content of alumina and lower silica content. Alumina to silica ratio is as high as 1.5–3%. Adverse alumina to silica ratio is detrimental for the blast furnace. This should be less than 1.5 and preferably below 1.

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PRODUCTS-Ganzhou Gelin Mining Machinery Co., Ltd.

Ganzhou Gelin Mining Machinery Co., Ltd. Small Lab Test Equipment >> Laboratory XMQ ball mill; Small wet type magnetic separator

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WO2010142104A1 - Equipment for preheating bulk metal ...

An equipment for preheating bulk metal charge and feeding it continuously to an electric furnace comprises a vibratory conveying device for putting the charge into the furnace (1), a roller-shaped tank for preheating the metal charge (2) and a vibratory conveying and gas sealing device for putting the charge into the tank (3). For preheating the metal charge (B), the metal charge (B) is put ...

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What Are The Common Faults In Blast Furnace Melting? What ...

Jun 10, 2019  The treatment method is to add pyrite in the ingredients, produce low-grade nickel bismuth, to melt the magnetic iron oxide, or increase the quartz in the batch, reduce the formation of magnetic iron oxide, or add the iron block to promote the magnetic iron oxide. reduction. (2) Wind and slag on the tuyere

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A Study on High-Grade Iron ore Beneficiation to Reduce ...

May 21, 2020  Therefore higher iron ore feed content to blast furnace is always preferred. Indian hematite, though rich in iron content has a higher content of alumina and lower silica content. Alumina to silica ratio is as high as 1.5–3%. Adverse alumina to silica ratio is detrimental for the blast furnace. This should be less than 1.5 and preferably below 1.

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Electromagnetic Vibro Feeder Manufacturer, Supplier and ...

Electromagnetic Vibro Feeder Manufacturer, Supplier and Exporter. Jaykrishna electromagnetic vibratory feeder is used in processing for handling all types of materials such as hot, damp, lumpy, dusty or abrasive for various functions. The vibrations product are smooth uniform, volumetric flow, that is fully variable with help of controller.

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Studies on direct reduced iron melting in induction furnace

The experiment was continued to reduce pellet composite in the HBC furnace. The pig iron produced from this process contained of 93.62%Fe, 3.5%C, 1.55%Si, 0.87%Mn, 0.05%P, and 0.087%S.With this ...

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Production of Steel in Induction Furnace – IspatGuru

May 26, 2019  The induction furnace for melting sponge iron is required to have a large ratio of cross sectional area to volume so that the heat transfer is high and to keep the slag hot and fluid. The induction furnace uses the transformer principle of induction, i.e. when an electrical conductor is placed in a fluctuating magnetic field then a voltage is ...

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Control of Slag and Insoluble Buildup in Ladles, Melting ...

ductile iron production has experienced continued growth, the quality of metallic scrap and other iron-unit feed stocks has steadily deteriorated. The result: slag related melting problems have become widespread issues in recent years. Yet, a search of the foundry technical literature from the past 30

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Magnetic Filtration Applications and Benefits

NdFeB (Neodymium-Iron-Boron) This is the strongest in magnetic strength of all the magnets known to mankind. Neodymium, with a number 60 on the periodic table, was first thought to be a rare earth element, due to its inclusion in the “rare earth” elements between 57 and 71 on the periodic table.

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Iron Carbide – IspatGuru

Mar 11, 2018  Iron Carbide. Iron carbide is a high melting point, non-pyrophoric, strongly magnetic synthetic compound obtained in granular or powder form. It is composed of three atoms of Fe and one atom C and its chemical formula is Fe3C. The commercial iron carbide consists of around 90 % total iron and around 6 % to 6.5 % of total carbon.

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What is the magnetic difference between steel and iron ...

Answer (1 of 4): At room temperature, the structure of pure iron is body centered cubic (BCC). When you add Carbon, other structures can be formed that are not BCC. Martensite is body centered tetragonal (BCT), Austenite is face centered cubic (FCC). Fe3C is called carbide, it is a ceramic and is...

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US20070157761A1 - Use of an induction furnace for the ...

iron induction furnace ore iron ore furnace Prior art date 2006-01-11 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.) Granted Application number US11/329,846 Other versions US7413590B2 (en Inventor James ...

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CONCRETE MATERIALS AND TESTING - MnDOT

C. Ground Granulated Blast Furnace Slag (GGBFS) In the blast furnace, magnetic iron ore (Fe3O4) and haematic iron ore (Fe2O3) are fed along with limestone into a high temperature chamber containing coke. Coke is partially oxidized to carbon monoxide, which reduces the ores to iron. The other product that floats over the molten iron due to

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Reduction roast and magnetic separation of oxidized iron ...

Low grade oolitic iron ore from the Aswan locality, assaying 45.23% Fe and 23.93% insoluble residue, was tested for concentration using reduction roasting and subsequent low intensity magnetic separation for the production of blast furnace feed. The ore is a low

More

Fluidized Bed Combustion of MSW - United Nations

- Waste pre-treatment and feeding - Furnace and waste heat boiler . Waste pretreatment (mechanical treatment) processes ... Magnetic metal separation Screening Non-magnetic metal separation Air classifier Storing REF I s s s ... Removal of iron, feed Semi-dry

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