According to the invention, iron ore in the form of . therein may be reduced without the use of the blast .. tunnel kiln designed to exclude air and to maintain a.
Keywords: Tunnel Kiln, Iron ore-coal composite pellets, Sponge iron, Thermal efficiency, . In the year 1908 use of tunnel kiln started for iron oxide reduction.
Aug 26, 2015 . In this training video, sponge iron production by Tunnel Kiln is . In this method the gas and the thermal coal are used to reduce the iron ore or co.
Sponge iron or direct reduced iron (DRI) is used as a raw material in electric . The different coal based processes include retort/shaft, tunnel kiln, rotary kiln, Lurgi etc. . rotary kiln process using low-grade coal to reduce sponge grade iron ore.
Feb 13, 2015 . Reduction of iron ore coal composite pellets in tunnel kiln emerges with an edge over all other systems studied. Performance parameters like.
Nov 29, 2016 . Mature And Advanced Direct Reduction Iron Technology (DRI) & Sponge Iron Technology . it covers shaft furnace ironmaking process, tunnel kiln ironmaking . grade of iron ore or iron concentrate; the third generation of direct reduction . the granular iron is used for steelmaking by arc furnace or casting,.
The energy content in the exhaust gases can be used for producing hot water for . The tunnel kilns. Reduction mix. Iron ore. Sponge iron. Waste. Combustion.
iron, manganese and chromite ores, considerable amounts . Processes for direct reduced iron (DRI) are well known and . tunnel kilns used in the ceramic and.
catalytic reduction (SCR) DeNOx system and is the benchmark for high . A UNIVERSAL OPTICAL. IMAGE ANALYSIS PACKAGE FOR IRON ORE, SINTER ... TWO NONCOKING COALS USED IN TUNNEL KILN. DIRECT REDUCTION OF.
Keywords: EAF dust recycling, Direct reduction, Iron ore, Rotary hearth furnace, . circular tunnel kiln. . been successfully used in a variety of industrial appli-.
By using tunnel kiln to produce DRI is that mix the iron ore concentrate, pulverized . and cooling, iron ore concentrate will be reduction and get the direct reduced iron. . This technical process can use various reduction gas as supplementary,.
We have manufactured tunnel kiln that can produce quality sponge iron from any . was required to be used for the solid state reduction or DRI making process. . Tunnel Kilns can use soft ore; Tunnel Kilns can comfortably work with Iron Ore.
Direct reduction of iron ore may be used to increase the capacity of either old or .. ore in a vertical shaft furnace, a rotary or tunnel kiln, or other types of hearth or.
Jan 24, 2013 . The method as claimed in claim 1, wherein the tunnel kiln reduction process is .. Tunnel kilns are traditionally used for heat treatment of refractory bricks . The mixture of iron ore, coal is fed to a metallic reactor and claimed in.
The process of Tunnel Kiln uses fines of Iron ore and Coal which are mixed together in specified propotions to eventually make DRI having quality grades of.
33. EFFECT OF HEATING RATE ON THE PROPERTIES OF TWO NONCOKING COALS. USED IN TUNNEL KILN DIRECT REDUCTION OF IRON PROCESS .
Keywords : Iron ore fines use, Sintering, Pellet making, Fluxed pellet, Hollow pellet, ... This two layer geometry offers advantages during pellet reduction and its .. In order to facilitate discharge of the hot iron cake a Tunnel Kiln reactor was.
This uses coal as a reductant. The carbothermic reduction of iron ore takes place in horizontal Tunnel kiln. Reduction mix, consisting of coal or coke fines of the.
Scale Through Simulating Tunnel Kiln Condition . Directly Reduced Iron (DRI) using waste/low grade iron ore (slime), mill scale and . Mill scale, a high iron containing body was thus used as a waste for a long time and was dumped.
Table 2.1 World-wide Usage of Iron Powder for Sintered Parts . on reduction of iron ore, yielding a highly porous sponge-iron which subsequently is .. These cars are traveling slowly through a tunnel kiln of approx. . before leaving the kiln.
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