A rotary hearth furnace is a direct-reduction device that enables to recover valuable metals from dust produced during the steelmaking process, as well as to produce direct-reduced iron from fine ore. … Rotary hearth furnaces are also capable of producing direct-reduced iron from fine ore and fine coal
The direct reduction processes in combination with the melting of directly reduced iron to produce steel in the EAF offer an alternative to the BF-BOF route. The basis of the direct reduction process is that solid sponge iron is produced by removing oxygen from the ore in a shaft furnace, rotary kiln furnace or fluidised bed. Sponge iron can be produced in the form of Direct Reduced Iron (DRI), Hot Briquetted …
GoodRich offers the technology for carbon-composite briquetting & subsequent reduction of iron ore into DRI in the rotary hearth furnace from a reputed manufacturer in China, in capacities from 70,000 tons to 320,000 tons per year. Iron-carbon composite is produced by mixing iron ore fines & anthracite coal fines, and densified by briquetting
Feb 03, 2020 · Depletion of high grade ore, the demand for utilizing low grade iron ore and coal fines, iron bearing steel plant solid waste, and environmental concerns have lead researchers to look for alternative routes of iron making. One such route involves RHF (rotary hearth furnace), where iron ore and coal fines in the form of cold bonded composite pellets/ briquettes are converted to direct reduced iron (DRI) …
The reduced pellets (DRI) are ultimately carried into a discharge zone where they are discharged from the rotary hearth furnace. An apparatus for performing the process is also disclosed
Sep 23, 2011 · Rotary Hearth Furnace(RHF)
A donut-shaped refractory-lined vessel.
Contains rotating bottom or rotating hearth.
Uses ore and carbonaceous reductant in the form of a single or a multilayer bed.
The temperature is controlled by means of burners positioned along the walls and on the roof of the furnace.
6. Rotary Hearth Furnace contd.
Rotary Hearth Furnace for Iron Ore Reduction
American Iron …
One emerging coal-based technology is the rotary hearth furnace, in which pellets of coal and iron ore are heated above 1300 °C by natural gas burners for a retention time of less than 13 minutes. The hot pellets may be melted in an EAF to produce pig iron, or charged hot to an EAF steelmaking furnace
Rotary Kiln Furnace In Sponge Iron Plant. Rotary Kiln Furnace In Sponge Iron Plant. rotary-kiln-furnace-in-sponge-iron-plant A rotary hearth furnace is mainly used in direct reduced iron indistry iron ore powder is reduced and molten into pig iron in the condition of reducing atmosphere Its working temperature is up to 1520 A rotary heath furnace technology can also be used in the smelting of
Summarized the development situation of rotary hearth furnace (RHF) direct reduction technology, ore resource allocation situation and direct reduction iron demand. The survey results show that: China's iron ore resource allocation heavily rely on imported iron ore, gas-based direct reduction process (MIDREX, HYL-III, FINMET) is not likely to be the mainly direct reduced iron (DRI) process in
A method and apparatus for producing direct reduced iron from dry compacts composed of iron oxide and carbonaceous material by feeding compacts no more than two layers deep onto a hearth and
The invented pellet reclamation process includes forming green pellets of a mixture of steel furnace dust, a carbonaceous material such as coal, charcoal, lignite, petroleum coke, or coke, and an organic binder. The green pellets are fed over a layer of burnt pellets on a rotary hearth furnace which successively conveys the pellets first through a drying and coking zone in which the pellets
Microwave assisted reduction of iron ore/slimes: An innovative and cost effective approach for dry beneficiation for maximization of iron recovery from low grade ores. Project Images. Image Caption:Design of proposed Pilot Plant Set-up for iron ore beneficiation using rotary kiln based microwave furnace
rotary earth furnace iron ore reduction plant. rotary earth furnace iron ore reduction ... limonite rotary sintering and reduction ... chinese rotary hearth furnace for iron ore reduction. rotary hearth furnace ... Read more. used lead rotary furnace for sale
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