The effects of ore type and bed depth on sinter production and quality, in Proceedings Iron Ore 2007 Conference, pp 301-309 (The Australasian Institute of Mining and Metallurgy: Melbourne). Show ...
30-03-2016· This product is known as direct reduced iron (DRI) or sponge iron. Processes that produce iron by reduction of iron ore (in solid state) below the melting point are generally classified as DR ...
x. Higher Proportion of sponge iron can be used in steel making xi. Higher yield in steel making by 2-3%compared to use of sponge iron from lump ore If the above advantages are considered, the use of pellets in rotary kiln sponge iron process will become techno-economically advantageous in spite of higher price of pellets compared to lump ore
Iron ore is a mineral block found underground. It is a source of raw iron, which can be smelted into iron ingots. Deepslate iron ore is a variant of iron ore that can generate in deepslate and tuff blobs. 1 Obtaining 1.1 Breaking 1.2 Natural generation 2 Usage 2.1 Smelting ingredient 2.2 Note blocks 3 Sounds 4 Data values 4.1 ID 5 History 6 Issues 7 Gallery 8 References Iron ore itself can be ...
16-12-2010· we would like to know the correct method for calculating the yield for working the production of Sponge Iron in a rotary kiln. we have been evaluating the yield for production using the following formula : P = (Q-%TM)X (% Fe (T) in ore - % LOI - 1 / 2 % L&P) where. P = Production, Q = Qty of ore used in the Kiln. Fe (T) = Total iron in the ore,
In the primary route of steel making iron ore is used as raw material. In the first stage iron ore is melted in a blast furnace to produce hot metal, and in second stage this hot metal is moved to a steel making shop to produce steel in a basic oxygen furnace. In the secondary route of steel making steel is produced using sponge iron, scrap etc.
1. Krupp Sponge Iron Process The Krupp. Sponge iron process uses a rotary kiln for the reduction of high grade lump ores or pellets (Fig. 1). The feed is introduced together with reducing and de-sulphurizing agents (lime-stone or raw dolomite) into an inclined rotary kiln, heated counter current to the flow of hot gas and reduced to form sponge ...
Sponge Iron (or Direct Reduced Iron (DRI)) This is produced from iron ore and is used in the manufacture of steel. It involves heating the iron ore at low temperatures without allowing it to come in contact with air. It is, therefore, important to allow the piles of sponge iron to be weathered before shipping so that its temperature drops.
13-07-2021· Iron Ore Price: Get all information on the Price of Iron Ore including News, Charts and Realtime Quotes.
Sponge iron is the metallic form of iron produced from reduction of iron oxide below the fusion temperature of iron ore (1535 oC) by utilizing hydrocarbon gases or carbonaceous fuels as coal. The reduced product having high degree of metallisation exhibits a „honeycomb structure‟ due to which it is named as sponge iron.
Sponge Iron Units 18.50 29.60 Total: 53.31 Note: Assuming no scrap is being used. For producing one tonne of crude steel, 1.6 tonnes of iron ore consumption has been assumed. If we add iron ore requirements of RINL of about 5.00MT (3.13 MT x 1.6 tonnes), the total iron ore requirements from non-captive mines work out to 58.31MT or about 60MT ...
for cement production and sponge iron production. Hatch has developed a proprietary one-dimensional kiln model to evaluate designs for clients (Haywood et al., 2009). This tool has been utilized for a variety of pyrometallurgical applications including ferrovanadium, nickel carbonate, nickel laterite, iron ore reduction, and spodumene (lithium)
Iron ore 1.43 Kg Sponge iron 1 Kg. Coal 0.64 Kg. Char 0.064 Kg. Air 5.20 Kg. Flue Gas 6.20 kg. Total Input 7.270 Kg Total Output Heat Supplied = 2058-251 Kcal (Excess heat) In Heat balance of ideal kiln ( coal used as reducing agent and no coal is used as fuel) S.No Component Heat Value (Kcal)
2nd the % yield calculation itself. % yield = actual amount obtained x 100 / maximum theoretical amount possible % yield = 4.1 x 100 / 4.4 = 93.2% (to 1dp, 3sf) More examples of % yield and atom economy calculations in section 6.-% yield calculation Example 14.2a (4) (reduction of haematite iron ore in a blast furnace)
In the first step, iron ore is reduced to sponge iron in a shaft furnace by means of reducing gas. In the second step, the reduced iron is completely reduced and melted in the melter-gasifier vessel. The combustion and gasification of the coal in the melter gasifier generate the heat to melt the reduced iron and the hot reducing gas containing 65–70% CO, 20–25% H 2, and 2–4% CO 2 .
Sponge Iron Units 18.50 29.60 Total: 53.31 Note: Assuming no scrap is being used. For producing one tonne of crude steel, 1.6 tonnes of iron ore consumption has been assumed. If we add iron ore requirements of RINL of about 5.00MT (3.13 MT x 1.6 tonnes), the total iron ore requirements from non-captive mines work out to 58.31MT or about 60MT. Out of the total
14-07-2014· A. Choudhury 45 2Fe 2O 3 (320) + 6CO (168) = 4Fe (224) + 6CO 2 (264) [2]. The figures in the bracket indicate the weight of the reactants and products. From the above equations we get 72 Kg carbon or 144 Kg coal + 96 Kg O 2 or 417 Kg air + 320 Kg ore reacts to gene rate 224 Kg of sponge iron & 264 Kg of CO 2.Or in other words, to produce 1 Kg of pure sponge iron the stoichiometric …
Iron ore reactor is a moving bed reactor to produce sponge iron product from iron ore. Gas and solid phases are passed in counter current. In general, sponge ore reactor is divided by 3 zones, which are referred to as reduction, isobaric, and cooling zones. The simple scheme of iron ore …
Closed crucible reduction of lump powdered mill scale or iron ore by coal: The sequential methodology and mechanism for optimization of process parameters. Advanced Powder Technology 2020, 31 (9), …
Iron ore crushing is not required since sized material has to be purchased. Iron ore of size 5 mm to 20 mm is being used for the production of Sponge iron. Iron ore is being fed to the Ground hopper, from where it conveyed to the Screen with the help of Vibro Feeder, where Oversize i.e. + 20 mm and Undersize i.e. – 5
09-11-2014· Sponge iron making process 1. ALBERTUS SEPTYANTOKO 2712100014 2. IRON ORE • Iron = 65-67 % • SiO2 + Al2O3 = 2-3 % • CaO + MgO = 0,5-1 % • Sulphur = 0,02 % max • Phosphorus = 0,04 % max Chemical Composition • Size = 5-18 mm • Shatter Index = +95 % • Tumbler index = +88 % • Reducibility Index = +94 % • Thermal Degradation Index = 5 % Physical Composition
Iron Ore: In sponge iron making, iron ore is reduced in solid state. Unlike in the conventional steel melting processes, the gangue content of iron ore cannot be separated as a slag. Therefore, it becomes imperative to select an ore with a high Fe content and a low gangue content, to optimize yield …
Iron ores are rocks and minerals from which metallic iron can be economically extracted. The ores are usually rich in iron oxides and vary in color from dark grey, bright yellow, or deep purple to rusty red. The iron is usually found in the form of magnetite (Fe 3 O 4, 72.4% Fe), hematite (Fe 2 O 3, 69.9% Fe), goethite (FeO(OH), 62.9% Fe), limonite (FeO(OH)·n(H 2 O), 55% Fe) or siderite (FeCO ...
29-07-2010· In general sized iron ore of 5-18mm is used in the process of manufacture of sponge iron on all types of rotary kiln with +16mm not exceeding 15-20%.The mean particle size of iron ore shall be restricted to 11mm in order to achieve uniform Fe metallic of all grain size fraction of the product.