melting of sponge iron

IS 12668: Melting characterstics of sponge iron/direct …

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: Invent a ...

Melting behaviour of sponge iron in

the acidic slag facilitates melting, as melting time of NML sponge iron is reduced from 7.8 seconds in basic slag to 7.1. seconds in acidic slag. The average melting time

IS 15774 (2007): Sponge Iron/Directed Reduced Iron (DRI) Hot Briquetted Iron (HBI) and Cold Briquetted Iron …

sponge iron/DRI, HBI and cold briquettes. 3.5 Metallic Iron — Itis the aggregate quantity of iron, either free or combined with carbon (as cementite) present in sponge iron/DRI, HBI and cold briquettes. 3.6 Residual Iron Oxides — These are remaining oxides of

Melting behaviour of sponge iron in

Melting behaviour of sponge iron in

Sponge Iron Division – Trimula Industries

Sponge Iron Division – Trimula Industries. This plant is based on SL/RN process. Rated capacity of this plant 0.21mtpa. In addition to producing DRI, the system is equipped with waste heat recovery boiler from where we can generate 16 MW/hr power from waste gas.

Sponge Iron – Tulsyan Steel

Sponge Iron is manufactured by reducing iron ore without the melting process – thereby making it energy efficient. The process is energy-efficient. Steel made using this particular process requires significantly less fuel, and the quality of the finished product …

THE OPTIMUM METHOD FOR CONVERTING SPONGE IRON TO …

The batchwise melting process (process technique No. 1) is carried out by charging batches of sponge iron, pure or mixed with scrap, with the aid of scrap buckets or chutes and melting one batch after the other. The charging technique is not very different from scrap charging.

sponge iron process

 · IS 12668: 1989 Melting characteristics of sponge iron/direct reduced iron(DRI) IS 12929: 1990 Feedstock (iron oxides and natural gas) for gas based direct reduction-guidelines. IS 13839: 1993 Specification for sponge iron/direct reduced (DRI) fines for steel

Study of Softening and Melting Behaviour of Iron Ore Sinter and …

4. rapid decrease of apparent viscosity due to melting of the iron sponge and separation of metal and slag to independent fluid phases. In the context of quasi-chemicalapproach, apparent acti ...

IS 12668 (1989): Melting characterstics of sponge iron/direct …

The technology of melting sponge iron is presently in an evaluationary state as the characteristics ofDRI differ appreciably from ironBecause and ofsteel the scrapvary asnature well ofas pig iron. the product, the dependmelting oncharacteristics the type of furnace in which it is used.

STUDIES ON DIRECT REDUCED IRON MELTING IN INDUCTION …

469 DUTTA, et.al. : STUDIES ON DIRECT REDUCED IRON MELTING metal interface results in foaming of slag and thus increase in the slag depth, while decreasing the slag density significantly. The combinations of a vigorous carbon boil and a deep foaming slag

the melting points of iron ore « BINQ Mining

 · Sponge Iron – SHYAM GROUP It is a spongy mass of iron, which is created by reducing iron ores into metallic iron. The process involves use of carbon at temperatures below the melting point ...

Meltdown in sponge iron industry

 · Sponge iron players have also been hit by higher prices and inferior ore quality. "Today, only those companies that have a back-up of iron ore can run independent sponge iron plants. At the ...

The Application and Benefits of Sponge Iron

 · Sponge iron is a metallic product produced through the direct reduction of iron ore in the strong state. It is a substitute for scrap and therefore is mostly applicable in making steel through the secondary route. The procedure of sponge iron making aims to expel the ...

Mathematical Modeling of the Melting of Sponge Iron in a …

A shell of solidified slag around the particle is formed; the shell grows to a maximum size and then melts back. If the slag bath has a high temperature, the sponge iron pellet will eventually melt. The temperature profile in both the slag shell and sponge iron can.

US4008074A

A method for melting sponge iron is provided in which pieces or pellets of sponge iron, which may be partly replaced by scrap, are placed on the surface of a molten metal bath. Oxygen is added to the metal bath at a position below the surface of the bath. Further ...

What is Direct Reduced Iron (DRI)

 · Direct reduced iron (DRI) also known as sponge iron, is a product of direct reduction of iron ore in various forms such as lumps, pellets, or fines. About 5% of global steel is produced from sponge iron (DRI), and this trend is increasing. Through the direct reduction of iron ore, oxygen is expelled from the iron to make metallic iron.

Direct reduced iron

Sponge iron is not useful by itself, but can be processed to create wrought iron or steel. The sponge is removed from the furnace, called a bloomery, and repeatedly beaten with heavy hammers and folded over to remove the slag, oxidise any carbon or carbide, and weld the iron together.

Highlighting The Application And Benefits Of Sponge Iron …

 · Sponge iron is a pivotal material used for the production of various steel items like best quality TMT bars, DI pipes and so on. The steel melting scarp is very useful for mini steel plants as it acts as a feed material. Sponge Iron is a very appropriate material to be used as a coolant in LD converters of the integrated steel plants.

The effect of sponge iron chemical composition on …

In the direct reduction method, it has been tried for the iron ore oxygen to be almost completely removed before melting. Considering the fact that the resulted sponge iron contains some of the worthless rock (gangue) as well as other impurities, the chemical composition of sponge iron is one of the main factors affecting the quality of this material which determines its metallization percentage.

Removal of Phosphorous from Steel Produced by …

 · 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 ...

F ocus

to facilitate faster melting to help energy conservation. 6. Raw Materials: The major raw materials required for production of sponge iron are iron oxides in the form of lump iron ore/pellets, non-coking coal and fluxes (limestone and dolomite). Some precaution is

US3165398A

The feature of the present invention shall be explained in detail as follows., In melting sponge iron according to the present invention, first of all,, it must be calculated and adjusted so that the slag in an amount of more than about 5% by weight against the amount of iron to be melted may be produced.

Sponge Iron | Iron | Steelmaking

Sponge iron is the product created when iron ore is reduced to metallic iron, in the presence of coal, at temperatures below the melting point of iron. The external shape of the ore is retained with 30% reduction in weight due to oxide reduction resulting in change in …

Sponge Iron | Manufacturer of Sponge 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 quality steel.

SPONGE-IRON

Sponge Iron, also known as Direct Reduced Iron is produced from Hematite Iron ore (5 to 18 mm size) by removing the oxygen by direct reduction process using non coking coal as the fuel and reducing agent in Rotary Kiln. Sponge iron is rich in Metallic Iron (Pure Iron) …

US3165398A

iron temperature furnace sponge iron sponge Prior art date 1962-08-31 Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)

Highlighting The Application And Benefits Of Sponge Iron …

 · Sponge Iron, also known as, direct reduced iron (DRI) is a kind of metallic product which is produced from the direct reduction of iron ore to a solid-state (iron). India became the largest producer of sponge iron in the world and accounted for ~24% of the global production in the year 2016 and apart from that India''s crude steel industry showed a dynamic growth at a CAGR of 6.75% between ...

Sponge Iron Melting in Induction Furnace

 · Re: Sponge Iron Melting in Induction Furnace 12/01/2019 1:41 AM Not all sponge iron is the same, it depends on the process and the fuel and the feed to the DR unit, amongst other characteristics, which determine its efficiency, hence the results of the reduction., ie., amount of extraction of the oxygen content left in the FEo, fe3o4, even in the fe2o3 state.

Production of Steel in Induction Furnace – IspatGuru

 · Melting of sponge iron is greatly influenced by factors like carbon content of the liquid bath and degree of metallization of sponge iron. Carbon content of the liquid bath reacts with unreduced iron oxide content of the sponge iron giving evolution of CO and CO2 gases from liquid bath i.e. carbon boil takes place, which results into subsequent removal of hydrogen and nitrogen gases ...

Sponge Iron

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 …

Sponge Iron

Iron sponge is very selective for H2 S removal. In this process, the inlet gas is fed at the top of the fixed-bed reactor filled with hydrated ferric oxide (Fe2 O 3 ). The basic reaction is: (7.1)2Fe2O3 + 6H2S → 2Fe2S3 + 6H2O. The reaction requires the presence of slightly alkaline water and …

Sponge Iron

Sponge Iron. Sponge iron is a product of the solid state reduction of Iron Ore/ pellets which helps in removal of oxygen from the iron ore and converts into metallic form. The world is increasingly using sponge iron as an alternative route to manufacturing steel and it has a sizeable contribution in Indian Steel Production. The company ...

Process of making steel by melting sponge iron in an …

The sponge iron is distributed in such a manner that carbon-containing liquid iron (hot metal) in the quantity required for making steel in the electric arc furnace is produced in the electric reducing furnace. The sponge iron may be hot-sieved and may then be charged to the melting …