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May 24, 2018· Sponge iron can be added directly into the liquid metal when the stirring action accelerates the transfer of heat to it and promotes the melting. Care is needed to ensure that there is enough liquid pool before adding sponge iron. Irrespective of charging mode, sponge iron is always charged after initial formation of molten pool (i.e. hot heel ...
The WEP70 iron of The Weller WE 1010, for example, has a temperature stability of plus or minus 10 degrees Fahrenheit (± 6 degrees Celsius). It also has a standby mode and auto setback feature that reduces the temperature of the iron when it's idle. Cleaning Your Tips. To care for your equipment, you need to know how to clean soldering iron tips.
continuous charging of sponge iron onto an unmolten sponge iron heap. The feed rate is regulated in ac-cordance with the melting rate of the sponge iron. The arcs are shielded against radiation losses by burn-ing in niches of unmolten sponge iron and the bath has …
With electric-arc furnaces for melting down sponge iron, sponge iron is introduced through a cover hole, which is arranged outside the center, namely roughly at the circumference of a cover heart, via a chute or slide, and this in large quantities of up to 7,000 kg/min. In practice, in the absence of specific measures, an average of 28 to 40 kg ...
The melting operation is carried out in an elongated horizontal reactor, in which sponge iron is charged onto the molten material in an intermediate region of the reactor, carbonaceous fuel and high-oxygen gases are blown into the molten material and slag and sponge iron are tapped at opposite ends of the reactor. To permit an economical melting of sponge iron having a large particle size ...
Jan 21, 2019· Steel-melting scrap is essential and acts as a feed material in all mini steel plants that uses this piece for dissolving in electric arc furnace/induction furnace to fabricate steel. Sponge Iron is likewise an appropriate material for utilizing as a coolant in …
Of all forms of raw materials, sponge is the purest form for steel making. A precise mix of iron ore and coal as well as maintaining the right temperature in the kiln where the raw materials are heated further contribute to our quality. A meticulous screening process further ensures the quality of the sponge selected for melting. Know More
iron (DRI) or sponge iron which is not only a. 468 TRANS. INDIAN INST. MET., VOL. 57, NO. 5, OCTOBER 2004 substitute for steel scrap as a feed material in EAF ... furnace for melting DRI should have a large ratio of cross sectional area to volume so heat …
Trimula Industries is the leading manufacturer of Structural Steel with integrated facilities like Power Plant, Steel Melting Shop, Sponge Iron, Rolling Mills and Coal Washery. Mission The mission of Trimula Industries Ltd . is to ensure complete customer satisfaction by supplying quality products at …
Melting Process The furnace crucible is charged with the requisite quantity of scrap and sponge iron and the lid is put on. Power introduced and the furnace gets hot and the steel starts to melt. Heating is continued till the entire metal mass melts to liquid 'state.
Sponge iron produced by direct reduction is melted in an electric arc furnace, in which a pool of liquid metal is maintained. To ensure that liquid carbon-containing iron for forming the pool is available in adequate quantities and that the process can be carried out with the highest possible economy, the sponge iron is reacted in an electric arc furnace on a bath of liquid carbon-containing ...
Sponge iron is rich in Metallic Iron (Pure Iron) with consistent chemical & physical characteristics. ... Steel is made in steel melting shop in the refractory lined vessels called LD Converters by blowing oxygen through the hot metal bath. While iron making is a reduction process, steel making is an oxidation process. ROLLING MILL.
Section Name: Sponge Iron and Smelting Reduction (MTD 30) Designator of Legally Binding Document: IS 12668 Title of Legally Binding Document: Melting characterstics of sponge iron/direct reduced iron (DRI) Number of Amendments: 1 Equivalence: Superceding: Superceded by: LEGALLY BINDING DOCUMENT Step Out From the Old to the New--Jawaharlal Nehru
Iron is a base metal extracted from iron ore. Pure iron has melting point of 1530 Degree Centigrade and density of 7.86 gm/cc. IRON MAKING: Iron making is the process of Reduction of iron ore using the relevant reducing agent (Reductant). ... SPONGE IRON/ DIRECT REDUCED IRON (DRI)/ HOT BRIQUETTED IRON (HBI) : ...
Sponge Iron is a substitute of scrap in steel melting. Although the reduction in the kiln is not direct, the CO gas reduces the impurities and oxides of hematite and the resultant DRI is in the solid form, this process is known as Direct Reduction Process. Coal based DRI process is mainly preferred on account of better non contaminated Iron (Fe ...
In recent years, refinements to the production of sponge iron have made it possible to reduce the iron without necessarily having to melt the ore. Because the iron can be made into pellets and even into powder, it is an economic and useful substitute for the scrap metal sometimes used by …
Jan 08, 2021· The main products of blast furnace smelting are pig iron and ferroalloy, and the by-products are slag, gas and furnace dust. pig iron. Pig iron is an iron carbon alloy with more than 2% carbon, which also contains Si, Mn, s, P and other impurities. Pig iron can be divided into two categories according to its use and composition.
The electric arc furnace uses primarily electrical energy to supply heat to melt scrap steel, sponge iron, or mixtures of scrap and other iron units. Compared to the BOS process, the EAF requires less chemical reaction for refining. Shaping & Coating The liquid steel can then be cast or formed into a variety of solid shapes via the 'continuous
Manufacturer Of Sponge Iron & Billets. Company is producing high quality steel Billets in the steel Melting Shop. The prime raw materials used are sponge Iron, Pig Iron and MS scrap, out of which majority is the sponge Iron being sourced from the Sponge Iron Kilns of the company.
(d) Melting of sponge iron in slag. The model was validated with experimental results reported by O'Malley 23) for sponge iron pellets in non-reactive slag, as can be seen in Fig. 5. The thermal histories obtained numerically show good agreement with the experimentally measured thermal history of the sponge iron in the center of the DRI pellets.
The technology of melting sponge iron is presently in an evaluationary state as the characteristics of DRI differ appreciably from iron and steel scrap as well as pig iron. Because of the vary nature of the product, the melting characteristicsdepend on the type of furnace in which it is used.
Sponge iron is also referred to as direct reduced iron, metalized iron, or hot briquetted iron. Sponge iron is used in the iron and steel industry as a substitute for scrap in induction and electrical arc furnaces. Over the years, the shortage of expensive melting scrap has made sponge iron a significant raw material for manufacturing high ...
Softening and melting behaviour of the iron ore materials was studied towards understanding the mechanism of formation of liquid slag and metal phases in the pre-reduced sinter and pellets.
Mar 22, 2013· In secondary route of steelmaking, production through induction melting furnace contributes about 31 % of India's total steel production. The main raw materials used are steel scrap, cast iron and sponge iron. In India, majority of the induction furnaces are operated using acidic lining of silica based ramming mass to produce structural steel where basicity cannot be maintained to remove ...
Sponge iron is a valuable source of iron for the production of high-quality steel. With the Direct Reduction technology that has been developed considerably in recent years, sponge iron melting in electric arc furnaces has more qualitative advantages than scrap metal smelting for steel making. Some of the benefits include:
(1) The experience of melting sponge iron in induction furnaces infers that the best usage and melting of the sponge iron can be achieved if the particle size of the sponge iron is in close range and its metallization is + 90%. The density of its particle should be as high as possible. (2) Even acidic slag facilitiates the melting of sponge iron.
Smelting sponge iron in electric arc furnace. HYBRIT is conducting pilot-scale smelting trials in collaboration with Swerim at their plant in Luleå, Sweden. The trials began in 2019, and are expected to run until 2023. In the plant, trials are being conducted to smelt sponge iron (the product in solid form resulting from the direct reduction ...
volume, the weight of Sponge-iron in one hour was derived by multiplying it with the density of Sponge-iron (2 tons/cubic meter). Thus the ammeter reading was linked with the Sponge-iron feeding rate in tons/hour per ampere. EXPERIMENT 3 The next task was to establish the energy required to melt one ton Sponge-iron.