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Bessemer process

The Bessemer process was the first inexpensive industrial process for the mass production of steel from molten pig iron before the development of the open hearth furnaceThe key principle is removal of impurities from the iron by oxidation with air being blown through the molten iron The oxidation also raises the temperature of the iron mass and keeps it molten...

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Brazilian company patents innovative dry iron ore ,

06-05-2016 0183 32 Dry iron ore processing The mining activity produces lots of materials with no commercial value That is because the iron ore traded in the market must be composed of at least 58 of ore...

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Patent Of Iron Ore Process

Patent Of Iron Ore Process Patent of iron ore processthe invention discloses a continuous steel making process for iron ore which comprises the following steps by adopting a direct carbon reduction mode of liquid iron oxide adding the iron ore or prereduced ore powder into slag iron bath in advance dissolving the iron ore or the prereduced ore powder to form slag ,...

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Process for the direct reduction of iron ores

A process for the direct reduction of iron ore in a shaft furnace having an upper reducing zone and a lower cooling zone in which reducing gas is introduced to the furnace at the bottom of the reducing zone around the periphery of the furnace, exhausted reducing gas or top gas is removed from the top of the furnace, cleaned, mixed with additional hydrocarbons, and reinjected into ,...

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Process for the improvement of reducibility of iron ore ,

WO-2013173895-A1 chemical patent summary...

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BINDER COMPOSITIONS AND PROCESSES OF PREPARING IRON ORE ,

06-08-2012 0183 32 Such processes of forming iron ore pellets are described, for example, in European Patent No 0225171, which is incorporated herein by reference in its entirety Common binders used to agglomerate particular ion ore include certain polymers and bentonite, ....

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Interactive timeline of metal processes, heat treatments ,

Patented by Henry Cort of Hampshire, the puddling process consisted of stirring molten pig iron in a reverberating furnace in an oxidising atmosphere to decarbonise it Afterward, the iron was gathered into a ball, shingled and rolled out...

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US Patent Application for IRON ORE CONCENTRATION PROCESS ,

25-10-2013 0183 32 The present invention discloses an advantageous and effective process for the concentration of iron ores, which can be fully dry or mixed, part of the process being dry, part wet The invention thereby improves process efficiency as a whole by increasing recovery of concentrators and increasing the useful life of the min...

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patent of iron ore process

iron ore pellets company profiles project process patent Iron Ore Pelletizing Process An Overview IntechOpen Jul 10, 2017 The iron ore production has significantly expanded in recent years, owing to increasing steel demands in developing countri However, the content of iron in ore deposits has deteriorated and low-grade iron ore Get A Quote...

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New patented method provides completely fossil

24-09-2020 0183 32 In the tests carried out, GreenIron has already reduced iron ore to 96 entirely without CO2 emissions GreenIron currently has four patents in the PCT phase global patents for its zero-emission method of reducing metal oxides to pure metals The material to be processed must initially be pelletized before insertion into the furnace...

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US Patent Application for COMMINUTION PROCESS OF IRON ORE ,

This invention relates to a process of comminution of iron ore or iron ore products pellet feed, sinter feed, etc at natural moisture without the need to add water or to include a drying step in the process, that is technically and economically feasible The comminution process of this invention uses at least one piece of equipment selected from the group consisting of roller ,...

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Process and system for dry recovery of iron

EA-027422-B1 chemical patent summary EA-027422-B1 chemical patent summary COVID-19 Information Public health information CDC Research information NIH SARS-CoV-2 data NCBI Prevention and treatment information HHS ,...

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US Patent for Coated iron ore pellets and a process of ,

Iron ore pellets including a core comprising iron ore, a first coating comprising lime, and a second coating comprising cement, wherein the first coating is disposed between a surface of the core and the second coating A process for manufacturing the iron ore pellets whereby the first coating is applied to the core to form a coated core, the surface area coverage of the first ,...

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The Patent For The Processing Of Iron Ore

The Patent For The Processing Of Iron Ore The invention discloses a process for smelting iron pyrite The process for smelting iron pyrite comprises the following steps of smelting the iron pyrite by an oxidiing smelting method to generate noble metal enriched sulfonium high-iron melting slag and SO2-contaiing high-temperature flue gas allowing the sulfonium to deposit on ,...

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patent of iron ore process

Process 600t/h lumpy iron ore DMS Cyclone Only6mm material for iron ore 360mm diameter cyclone Process 40t/h per cyclone Larcodems -90 6mm stones 12m diameter Operating capacity of 600-800t/h Efficient separation at SG s as high as ,...

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125 Iron And Steel Production

diagram of the iron and steel industry in Figure 125-1 Coke production is discussed in detail in Section 122 of this publication, and more information on the handling and transport of materials is found in Chapter 13 12511 Sinter Production - The sintering process converts fine-sized raw materials, including iron ore, coke breeze....

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Pig Iron Manufacturing Process

20-03-2017 0183 32 Pig Iron At the beginning of the use of the electric furnace, for the manufacture of calcium carbide and ferro-alloys, experimental work was conducted in it upon the production of steel from iron ore For many years steel and wrought iron have been produced directly from ore on a small scale in the forge, crucible, and reverberatory furnaces ....

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The Development of New Iron Making Processes

Since the processes use only iron ore fines and non coking-coal, FASTMET and FASMELT are expected to be the iron making processes of the 21st century, especially with the current roaring prices for lump-ore and coking-coal 3 ITmk3R process The ITmk3 separates nugget iron and slag directly from the iron ore fines and pulverized coal...

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Process for the improvement of reducibility of iron ore ,

EP-2852694-B1 chemical patent summary...

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PROCESS AND APPARATUS FOR THE DIRECT REDUCTION OF IRON ORES

The process for the direct reduction of iron ores according to he invention eliminates the above drawbacks, by employing for the purpose of complete utilization of the reducing agents resulting in the process and of eliminating the possible causes of charge blocking in the kiln, a charge composed of iron ore in the form of lumps and 5 percent by volume of lumps of coke most ,...

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BETHLEHEM PATENTS IRON ORE PROCESS

BETHLEHEM PATENTS IRON ORE PROCESS Read in app Oct 13, 1961 , through a newly patented method of preparing wet iron ores for sintering ....

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Mineral Processing Flowsheets

08-03-2016 0183 32 Utilizing a patented process special reagents made profitable production of lead/copper and zinc-iron concentrates and subsequent separation of these concentrates into four 4 separate products Although flotation has made profitable the bene-ficiation of many low grade ores both metallic and non-metallic, it is not always true that flotation will give the ,...

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Ore pretreatment process

Ore pretreatment process - EXXON RESEARCH AND ENGINEERING COMPANY Title Ore pretreatment process United States Patent 3928024 Abstract A process is provided for lowering the sulfur and phosphorus content of a particulate oxidic iron ore which renders the ore more suitable for use in direct ore reduction process...

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