retort process of sponge iron

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

The Kroll process and production of titanium sponge ...

2020-1-1 · The sponge in contact with retort wall and the push plates have a high likelihood of contamination with iron and nickel since these metals are soluble in titanium. The top of the mass may also have some contamination of iron and nickel from reaction with the radiation shield and substoichiometeric chlorides.

CN1818081A - Production of sponge iron - Google Patents

The invention is about the producing method of the sponge iron. The process is: (1) make the material into the double iron oxide ball; (2) put the double iron oxide ball and the reductant into the reaction tank to get the sponge iron ball mass; (3) put the mass into the thermal insulating flume to separate the reductant, to remove the C, S,O in the protection of the N2 or the H2 to produce the ...

Effect of Quality of Raw Materials on the Quality of ...

2017-3-4 · Sponge Iron is a term given to the product that is obtained by reduction of iron oxide ore in solid state. Since ... In the mean time this retort process holds the second largest share worldwide of all direct reduction process. At the beginning of the 60’s the

(PDF) Modeling of Rotary Kiln for Sponge Iron Processing ...

523-1 Designing of an Intelligent Fuzzy Logic System for Accretion Prevention in Sponge Iron SL/RN Rotary Kiln Based 100TPD Dri Process By Tawanda Mushiri and talon garikayi Industrial and Process Furnaces: Principles, Design and Operation

Melting behaviour of sponge iron in

2010-9-6 · (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.

ENGINEERING NATIONAL INSTITUTE OF TECHNOLOGY,

2009-5-10 · The process of DRI or sponge Iron making can be classified into different categories, which are as follows. 1.4.1 Rotary Kiln Processes Rotary Kiln Processes are very useful for Sponge Iron Production using non-coking coal as reductant. The Iron Ore in

SPONGE IRON PLANT

2018-9-24 · The major Raw Materials required for production of Sponge Iron by the rotary kiln process are: sized graded Iron Ore and Non-Coking coal. Limestone, in small quantities, is also required to scavenge the sulphur. IRON ORE The quality requirement of Sized ore for sponge iron

Chapter 3. Modern carbonising retort systems

2021-2-9 · Where complex retort systems are used for charcoal making the simplest approach is undoubtedly to use the whole of the off-gases as a source of heat for carbonisation and if there is an excess to burn the gases for power or process heat generation. Some of the retort systems described earlier in this chapter recover the heat in the off-gases ...

Mercury Retort | A&B Prospecting

5. Place your gold and mercury amalgam into the lower cavity, and screw in into the upper part of the cavity securely. 6. Fill the water cup with 50/50 mix of water and antifreeze. 7. Wrap a piece of cotton cloth (making a tube) around the discharge end of the retort. Attach the cloth tube to the discharge tube with a rubber band.

retort process of sponge iron - niezalezne-opinie.pl

Sponge Iron is a term given to the product that is obtained by reduction of iron Under the retort process the ore is reduced discontinuously in a container by Get Price Announcement of Scientific and Technical Information - OSTI.GOV

PROCESS FOR PRODUCING SPONGE IRON - FRIED KRUPP

Reduction gave a sponge iron with a total iron content of 77.2 percent and a zero-valent iron content of 71.9 percent corresponding to a metallizing efficiency of 93.1 percent. The sponge iron fraction below 3 millimeters amounted to 8.3 percent and that below 5 millimeters was 16.1 percent. The process variables were otherwise those in Example I.

Sponge Iron | Iron | Steelmaking

2017-7-31 · A vertical retort is used for the reduction of iron ore as against a rotary kiln in coal based sponge iron process. When the gases are travelling upwards the charge moves downward by gravity. Gas-based sponge iron is not subjected for magnetic separation, as no contamination with nonmagnetic is possible either it can be cooled indirectly or ...

Powder Production Technologies - Powder Metallurgy Review

The sponge iron process. The longest established of these processes is the sponge iron process, the leading example of a family of processes involving solid state reduction of an oxide. In the process, selected magnetite (Fe3O4) ore is mixed with coke and lime and placed in a silicon carbide retort.

(PDF) Modeling of Rotary Kiln for Sponge Iron Processing ...

523-1 Designing of an Intelligent Fuzzy Logic System for Accretion Prevention in Sponge Iron SL/RN Rotary Kiln Based 100TPD Dri Process By Tawanda Mushiri and talon garikayi Industrial and Process Furnaces: Principles, Design and Operation

Direct Reduction Technologies | SAIL

2021-8-14 · Direct reduction processes are of significance and can form an alternative to a conventional Blast furnace. Solid sponge iron ( direct reduced iron or DRI) is produced by removing oxygen from the ore .The technique of Direct reduction varies according to the type of reducing agents employed and the metallurgical vessel in which they are reduced.

Blast Furnace Process - an overview | ScienceDirect Topics

2010-1-1 · The horizontal retort process was the dominant one for a very long time. It is now mostly replaced by the vertical continuous retort process (Rosenqvist, 1974). In the horizontal retort process the retorts are first charged with a loose mixture of ZnO and an excess of coke breeze and then heated to a maximum temperature of 1400°C (2552°F) to ...

Mercury Retort | A&B Prospecting

5. Place your gold and mercury amalgam into the lower cavity, and screw in into the upper part of the cavity securely. 6. Fill the water cup with 50/50 mix of water and antifreeze. 7. Wrap a piece of cotton cloth (making a tube) around the discharge end of the retort. Attach the cloth tube to the discharge tube with a rubber band.

MIDREX® Process - Midrex Technologies, Inc.

2021-7-28 · The MIDREX® Direct Reduction Process fueled by natural gas paired with an electric arc furnace (EAF) has the lowest CO² emissions of any commercially proven steelmaking route using virgin iron ore at 1.1 – 1.2 kg CO² / kg steel. To maximize the efficiency of reforming, offgas from the shaft furnace is recycled and blended with fresh ...

Retort | chemistry and industry | Britannica

Retort, vessel used for distillation of substances that are placed inside and subjected to heat. The simple form of retort, used in some laboratories, is a glass or metal bulb having a long, curved spout through which the distillate may pass to enter a receiving vessel.

retort process of sponge iron - niezalezne-opinie.pl

Sponge Iron is a term given to the product that is obtained by reduction of iron Under the retort process the ore is reduced discontinuously in a container by Get Price Announcement of Scientific and Technical Information - OSTI.GOV

NAPHTHA REDUCTION OF IRON ORES TO SPONGE IRON

2012-1-11 · The development of a process of sponge iron production by naphtha, a petroleum by-product, in a continuous 90 mm I.D. vertical reactor is discussed The process, the equipment and the operational para meters, the results of the campaigns with various iron ores and pellets are described.

ALTERNATIVE ROUTES OF IRON MAKING

2020-10-25 · The key input material required for sponge iron production is the iron ore. Since sponge iron is a solid reduction process, the gangue in the ore is retained in the product. Due to oxygen removal there is a reduction in weight by about 30%, percentage of gangue material goes up by 1.4 times. Hence it

REDUCING AGENTS FROM BROWN COAL FOR THE

2020-5-6 · ditions of new iron in the form of pig-iron or sponge-iron. Direct reduction process In the so-called direct reduction processes (rotary kiln, fluidized bed, retort, and shaft fur-nace processes) the separation of the oxygen from the iron takes place in the reduction cham-ber itself; where the reduction of the iron ores proceeds in the solid phase.

SPONGE IRON INDUSTRY - BankRuna

2012-10-8 · From a meager production of 1.31 million tonnes of sponge iron in 1991-92 the present production level of sponge iron level jumped to 7.67 million tones in 2002-03 and 10 million tones in 2004-05 and India emerged as the largest producer of Coal based sponge iron in the world since 2001.

Mercury Retort | A&B Prospecting

5. Place your gold and mercury amalgam into the lower cavity, and screw in into the upper part of the cavity securely. 6. Fill the water cup with 50/50 mix of water and antifreeze. 7. Wrap a piece of cotton cloth (making a tube) around the discharge end of the retort. Attach the cloth tube to the discharge tube with a rubber band.

Amalgamation: Using Mercury to capture fine gold, retort ...

2014-6-22 · Yes, you can make a retort from iron pipe fittings etc, but unless well-designed, these can be inconvenient to use. However with a little bit of planning, design and some welding, a decent retort can be made of pipe. There are a variety of methods used to cool the mercury vapors coming out of the retort.

MIDREX® — THE LEADING DRI PRODUCTION PROCESS |

MIDREX is an innovative ironmaking process that has been specifically developed to produce direct-reduced iron from iron ores and natural gas/hydrogen. MIDREX is a gas-based shaft furnace process that converts iron oxides - in the form of pellets or lump ore - into direct-reduced iron

Iron & Steel Making - Askmemetallurgy

2021-7-31 · Iron & Steel Making. askmemetallurgy provides you lots of fully solved Metallurgical Engineering (Iron & Steel Making) questions and answers with Explanation. All students, freshers can attemp or download Metallurgical Engineering Physical Metallurgy quiz questions with answers as PDF files and eBooks. 1. Which is closest to the purest form of ...

How sponge is made - material, manufacture, making, used ...

Sponge manufacturing produces no harmful byproducts and little waste. Sponge material that is lost in trimming, such as when an uneven end is cut off the large block, is ground up and recycled. It can be thrown in the mixer at the beginning of the process, and become part of a new sponge.