crusible free sponge iron

DRi TUNNEL KILN for SPONGE IRON | Pasar Indonesia

Jan 23, 2014· Pak, Harga Crucible-Free Tunnel Kiln 20.000mt.dri Fob Tianjin China sekitar usd 3.350.000 Full set, atau kira-2 usd 3.800.000 Tiba Tg Priok, tx


Direct reduced iron - Wikipedia

Direct reduced iron (DRI), also called sponge iron, is produced from the direct reduction of iron ore (in the form of lumps, pellets, or fines) into iron by a reducing gas or elemental carbon produced from natural gas or coal.Many ores are suitable for direct reduction. Direct reduction refers to solid-state processes which reduce iron oxides to metallic iron at temperatures below the melting ...


DRi TUNNEL KILN for SPONGE IRON | Pasar Indonesia

Jan 23, 2014· Jan 23, 2014· Pak, Harga Crucible-Free Tunnel Kiln 20.000mt.dri Fob Tianjin China sekitar usd 3.350.000 Full set, atau kira-2 usd 3.800.000 Tiba Tg Priok, tx


US4070180A - Process for the passivation of sponge iron ...

Passivation of sponge iron by a mild reoxidation thereof is effected by contact, at a temperature of 200° to 600° F, with a gaseous atmosphere consisting essentially of 25 to 80% H 2, 15 to 70% CO and 0.5% to 4.0% O 2 for a time in excess of about 1 hour. The passivation atmosphere may be produced by dilution of a free-oxygen-containing gas with conventional reducing gases.


Direct reduced iron - Wikipedia

Oct 07, 2005· Direct reduced iron (DRI), also called sponge iron, is produced from the direct reduction of iron ore (in the form of lumps, pellets, or fines) into iron by a reducing gas or elemental carbon produced from natural gas or coal.Many ores are suitable for direct reduction. Direct reduction refers to solid-state processes which reduce iron oxides to metallic iron at temperatures below the melting ...


(PDF) Study of Softening and Melting Behaviour of Iron Ore ...

Besides, the coke free rotary kiln where sponge iron could be made using non coking coal has also emerged as an energetically inefficient process unless waste heat is recovered subsequently. On ...


(PDF) Spontaneous burning of sponge iron | varun suri ...

, Issue No. I, July ISSN-2319-8354 Fig – 1, Sponge Iron Sponge iron is the product created by heating an iron ore at a temperature high enough to burn off its oxygen and carbon content but below iron's melting point. Concept of Sponge Iron:- The appearance of iron ore is completely changed when it gets converted to sponge iron of its ...


Crucible - definition of crucible by The Free Dictionary

Define crucible. crucible synonyms, crucible pronunciation, crucible translation, English dictionary definition of crucible. n. 1. A vessel made of a refractory substance such as graphite or porcelain, used for melting and calcining materials at high temperatures. ... I saw iron ladles, pans full of white sand, files with white metal left ...


Raw Material for Steel Mills - Pig Iron Exporter from Kolkata

We are a leading supplier and exporter of high quality Sponge Iron in India. Our high and consistent quality sponge iron facilitates steel makers to maintain high quality and reduce dependency on scrap. Sponge Iron or DRI (Direct Reduced Iron) is relatively uniform in …


US4540432A - Continuous process of melting sponge iron ...

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 ...


(PDF) Design Analysis of an Electric Induction Furnace for ...

A U J.T. 9 (2): 83-88 (Oct. 2005) Design Analysis of an El ectric Induction Furnace. for Melting Aluminum Scrap. K. C. Bala. Mechanical Engineering Department, Federal University of Technology ...


Sponge Iron - an overview | ScienceDirect Topics

DRI, also known as sponge iron, is the product of reducing iron oxide in the form of iron ore and steel plant wastes into metallic iron, below the melting point of iron and typically in the range of 800–1200 °C. Iron oxide is charged into shaft furnace, rotary kiln, or fluidized beds in the form of pellet, iron ore lumps, or fines. The reduction takes place using gaseous reductants (CO + H ...


PhotoStudio - Untitled-Sca

12.12 Magnetite is reduced to sponge iron (Fe) in a continuous reactor op- erating at 800 K using methane gas (CH4) as the reducing agent. The gaseous reaction product leaving the reactor at a total pressure of I atm is a mixture of CO. CO,. H,. and with a negligible methane content. The gas is at equi-


(PDF) Study of Softening and Melting Behaviour of Iron Ore ...

Following crucible setup was prepared: the 1 Introduction coke bed (coke size 7–10 mm) was placed on the crucible High temperature properties of the iron ore pellets and sin- bottom; the studied material was loaded above with the bed ter determine the parameters of the cohesive zone and thus height of 30 mm; a layer (3–5 mm height) of the ...


Crucible steel - Wikipedia

Methods of crucible steel production. Iron alloys are most broadly divided by their carbon content: cast iron has 2–4% carbon impurities; wrought iron oxidizes away most of its carbon, to less than 0.1%. The much more valuable steel has a delicately intermediate carbon fraction, and its material properties range according to the carbon percentage: high carbon steel is stronger but more ...


Crucible - Wikipedia

Crucible is used in the laboratory to contain chemical compounds when heated to extremely high temperatures.Crucibles are available in several sizes and typically come with a correspondingly-sized lid.When heated over a flame, the crucible is often held inside a pipeclay triangle which itself is held on top of a tripod.. Crucibles and their covers are made of high temperature-resistant ...


Marcab Co Inc.

I: Iron Sponge media in cubic feet. R: Reactive capacity of one cubic foot of Iron Sponge media containing 6.8 kilograms of iron oxide which will react with 3.75 kilograms of hydrogen sullfide. W: Weight of hydrogen sulfide = 43.6 x 10-9 %: 80% Bed use before breakthrough


Steam Reforming of Methane on Sponge Iron: Influence of ...

Oct 31, 2020· 2) for iron reduction and production of sponge iron or direct reduced iron (DRI). The generation of this gas occurs through methane reforming, which can be done in a reformer or inside the reduction shaft with the sponge iron as a catalyst. The latter occurs in the auto-reforming processes.


Production of Steel in Induction Furnace – IspatGuru

May 26, 2019· Sponge iron has uniform chemical and physical characteristics. It has low percentage of tramp metallic elements (around 0.02 %) and low sulphur content but usually is associated with high phosphorus content. Sponge iron with higher carbon content is preferred since it reduces the requirement of the carburizer in the furnace.


Making my own iron melting furnace - Smelting, Melting ...

May 18, 2011· May 19, 2011· As far as fuel, you can do cast iron in a crucible furnace (that is what I do), mine is fueled with waste oil, but you can do iron even with a charcoal furnace. You will be using a lot of fuel however. Check out the forum over to BYMC, lots of info and the crowd there is just as friendly and free with info as the folks here.


Making my own iron melting furnace - Smelting, Melting ...

May 19, 2011· As far as fuel, you can do cast iron in a crucible furnace (that is what I do), mine is fueled with waste oil, but you can do iron even with a charcoal furnace. You will be using a lot of fuel however. Check out the forum over to BYMC, lots of info and the crowd there is just as friendly and free with info as the folks here.