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2 · Iron ore feed rate: maintained at 31tons/hr.3) Coal feed rate:Around 390 kg of fixed. ton of DRI.4) C/Fe ( carbon/ Iron ) ratio:The C/Fe ratio is 0.4-0.46 which indicates t. at the quantity of carbon feed to the kiln. The higher the C/Fe ratio indicates excess coal consumption and lower.
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201911 · Although it is still the prevalent process, blast furnace hot metal production has declined over the years due to diminishing quality of metallurgical coke, low supply of scrap metal and environmental problems associated with the process. ... DRI (also known as sponge iron) is an important advancement in the ironmaking industry due to its high ...
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202033 · Sponge iron means porous iron produced by direct reduction process.Direct reduction (DR) process is a solid-state reaction process (i.e. solid–solid or solid–gas reaction) by which removable oxygen is removed from the iron ore, using coal or reformed natural gas as reductants, below the melting and fusion point of the lump ore or …
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20171215 · The schematic of sponge iron process is shown in Fig. 1 where raw material enters to the kiln from feed end and moves toward the discharge end due to rotation and inclination of kiln. Sponge iron exits from discharge end. Air enters the kiln as primary and secondary air, which is due to the process requirement, as shown in Fig. 1.Solid …
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201964 · Data-1 includes temperatures profiles and air inlet at positions, AT-1 to AT-3 and MF-1 and MF-2, inside the kiln whereas, flow rates of iron ore, feed coal, slinger coal and sponge iron is ...
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Successfully developed an innovative process of direct reduction of cold-bound pellets from iron ore concentrate with a coal-based rotary kiln, in comparison with the traditional direct reduction of fired oxide pellets in coal-based rotary kilns, possesses such advantages as: shorter flowsheet, lower capital investment, greater economic profit, good quality of direct …
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201485 · Introduction. Rotary kilns (Figure 1) are used for a range of mineral processing operations. Kilns range in size from 2–6 m in diameter and can be 50–225 m long with an operating mass of up to 3000 t. Two of the most common applications are for cement production and sponge iron production.
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2024613 · 1. Introduction. The rotary kiln is used in many solid processes, including drying, incineration, heating, cooling, humidification, calcination and reduction. This widespread application can be attributed to factors such as the ability to handle varied loads, with large variations in particle size [1].
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201661 · The 2D geometry of rotary kiln of sponge iron process is developed using ANSYS 14.5 and shown in Fig. 2. Feed, a mixture of iron ore, coal and dolomite, enters to the kiln as indicated in Fig. 2. In this figure primary air enters from discharge end whereas, secondary air enters the kiln through different nozzles placed at the periphery of the ...
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In Energy conservation process in DRI plant we catch Process resultant fuel gases which is at high temperatures of around 950°C from the sponge iron kiln; constituting significant amount of heat energy. With WHRB, a modern Technology, We produces around 0.5 million TPA of Sponge Iron. Thus we have achieved about 85% recovery of waste heat from ...
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