retort process of sponge iron

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 ...

US1492818A - Process of producing sponge iron - Google Patents

US1492818A US350171A US35017120A US1492818A US 1492818 A US1492818 A US 1492818A US 350171 A US350171 A US 350171A US 35017120 A US35017120 A US 35017120A US 1492818 A US1492818 A US 1492818A Authority US United States Prior art keywords iron sponge iron furnace producing sponge sponge Prior art date 1920-01-08 Legal status (The legal status is an assumption

Hydrogen production by steam–iron process - ScienceDirect

Mar 01, 2000 · The sponge iron process requires re-heating after the oxidation to raise the temperature to about 800°C, as reduction is an exothermic process. The heat is supported by lean gas combustion. We established the number of retorts as follows:

The Kroll process and production of titanium sponge ...

Jan 01, 2020 · 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.

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 ...

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

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

Sponge Iron - an overview | ScienceDirect Topics

8.3.1 Iron-Sponge Sweetening. The iron-sponge sweetening process is a batch process with the sponge being a hydrated iron oxide (Fe2 O 3) supported on wood shavings. The reaction between the sponge and H 2 S is. 2 Fe 2 O 3 + 6 H 2 S 2 Fe 2 S 3 + 6 H 2

Sponge Iron - Manufacturing Plant, Detailed Project Report ...

The sponge iron is a substitute for scrap in the electric arc furnace (upto 80%), which can be easily manufactured from indigenously available raw materials at very competitive price. Sponge Iron is the iron ore reduced in solid state by a direct reduction process

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.

ENGINEERING NATIONAL INSTITUTE OF TECHNOLOGY,

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 ... 1.4.2 Retort Process In Retort process the reactor vessel is a retort where the charge is fed from top end

Hydrogen production by steam–iron process - ScienceDirect

Mar 01, 2000 · The sponge iron process requires re-heating after the oxidation to raise the temperature to about 800°C, as reduction is an exothermic process. The heat is supported by lean gas combustion. We established the number of retorts as follows:

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.

PROCESS FOR PRODUCING SPONGE IRON - FRIED KRUPP GMBH.

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

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 ...

SPONGE IRON INDUSTRY - BankRuna

3.0 PROCESS TECHNOLOGY FOLLOWED FOR SPONGE IRON 20 3.01 Type of Process Technology 20 3.02 Solid Based Processes 20 3.03 Process Technology 20 3.04 Available Module Size 23 ... 3.14 Retort Process 40 3.14.01 Hoganas Process 40 3.14.02 Kinglor Metor Process 40 . Chapter Title Page No. No. 3.15 Gas Based Processes 42 ...

Powder metallurgy - Wikipedia

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 (Fe 3 O 4) ore is mixed with coke and lime and placed in a silicon carbide retort. The filled retort is then heated in a kiln ...

(PDF) 📄 i) Direct Reduced Iron: Production

Mar 30, 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

Direct reduction : a review of commercial processes

SPONGE IRON PRODUCTION CAPACITY BY PROCESS TYPES (1978) Gas Reductant (80.2%) Shaft Furnaces (38.7%) Midrex (27.4%) Purofer (7.6%) Armco (3.1%) Wiberg (0.6%) Retort Furnaces (26.7%) HyL (26.7%) Fluidized Bed Furnaces (10.7%) HIB (7.0%) FIOR (3.7%) Others (4.1%) Solid Reductant (19.8%) Rotary Kiln (16.0%) SL/RN (7.9%) Japanese (6.7%) Krupp (1.4% ...

Direct Reduction Technologies | SAIL

Aug 06, 2021 · 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. ... Retort process. Reducing gasses are carbon monoxide , hydrogen and their mixture which are generally ...

What is Powder Metallurgy - A Modern Manufacturing Process ...

Dec 04, 2018 · Now, this retort is again heated and subsequently the mixture in the retort is reduced which in turn results into the formation of the slag. In the last step, the whole retort is then emptied and the iron sponge which is in reduced format is separated from the formed slag. Crushing as well as annealing of the iron sponge takes place to form the ...

process making sponge iron rotary kiln animation

Stone Crusher Plant-aus In Zimbabwe. process making sponge iron rotary kiln animation. retort process of sponge iron – South africa ore crusher plant . process making sponge iron rotary kiln animation. rotary kiln process of making sponge iron chapter 3 Rotary Kiln Sponge Iron | PDF SB – Download Free Books ...

Sponge Iron - Gas Based Sponge Iron Manufacturer from

This process utilizes natural gas the reducing agent. Natural gas is reformed to enrich with 112 and Co mixture and this enriched and reformed gas mixture is preheated in gas-based process. A vertical retort is used for the reduction of iron ore as against a rotary kiln in coal based sponge iron process.

STUDY OF REDUCTION BEHAVIOUR OF IRON ORE LUMPS BY

The process of DRI or sponge Iron making can be classified into different categories, which are as follows. a> Rotary Kiln Process. ... In Retort process the reactor vessel is a retort where the charge is fed from top end remains stationary till reduction, thus it works in batches .a mixture of hot gases contains about 89% of reducing gases ...

PRODUCTION OF LIQUID IRON USING COAL

The important amongst them are COREX, Direct Iron Ore Smelting Process (DIOS), Hi Smelt Process etC, NML has developed a process using non- coking coal as reductant to produce sponge iron in a vertical retort direct reduction furnace developed at NML And the sponge iron so produced is

SPONGE IRON INDUSTRY - BankRuna

3.0 PROCESS TECHNOLOGY FOLLOWED FOR SPONGE IRON 20 3.01 Type of Process Technology 20 3.02 Solid Based Processes 20 3.03 Process Technology 20 3.04 Available Module Size 23 ... 3.14 Retort Process 40 3.14.01 Hoganas Process 40 3.14.02 Kinglor Metor Process 40 . Chapter Title Page No. No. 3.15 Gas Based Processes 42 ...

Melting behaviour of sponge iron in

(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.

TITANIUM - ASM International

Only iron, aluminum, and magnesium are more abundant. More titanium is available than nickel, ... of the retort, the reaction stops and the retort pres-TITANIUM Process Technologies The Guggenheim Museum in Bilbao, Spain, is finished with an ultrathin ... bles a sponge. The retort now contains titanium metal (sponge), unreacted magnesium, and ...

Retorting Amalgam & Melting Bullion

May 13, 2017 · Description of Process. Retorting consists in distilling off the quicksilver from the amalgam and is done in a cast-iron retort (Fig. 58), a vessel having a cover which can be fastened on so tightly that no fumes of mercury escape except by the vapor pipe which leads from the cover to a vessel containing water, where the fumes of quicksilver ...

tunnel technology of iron sponge making

tunnel technology of iron sponge making. tunnel technology of iron sponge making. Powder made by sponge iron reduction process takes place in a gas fired tunnel kiln at around 1200°C for For merchant pig iron production, the iron is cast.pdf tunnel kiln sponge iron new technology.

Setting up of modalities for normative coal requirement in ...

The contribution of coal based sponge iron to the total production in India has remained above 60 per cent since 2004-05. The contribution of coal based sponge iron has been on the rise. From about 8 MT in 2004-05, contributing 63 per cent to the total production, it has grown to

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

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 (DRI). MIDREX technology is highly customizable, which means ...

KINETICS OF IRON ORE REDUCTION BY COAL AND CHARCOAL

The CO reduces the iron ore to molten iron becoming CO 2 in the process. 3 CO + Fe2O3→ 2Fe + 3CO 2 ... called direct reduced iron (DRI) or SPONGE IRON. Direct reduced iron (DRI) or sponge iron is a good substitute of scrap for ... and vigorously in the country instead of natural gas based shaft furnace or retort process.

Copper Precipitation Methods

Mar 26, 2017 · The copper can be precipitated from this solution by means of scrap iron, the cement copper going directly to the blast furnaces or converters. The use of sponge iron is more attractive than the use of scrap iron, however. It can be made from calcines which contain about 50 per cent. iron. This makes the process independent of the scrap-iron ...

zinc processing | Britannica

In this process, heat was supplied through the direct electrical-resistance heating of the coke in the charge. The most serious disadvantage of the improved retort processes was that they were restricted to ore concentrates with a low iron content, because high iron content in the feed caused plates of iron to form in the retorts.

Adrien Chenot - Wikipedia

The iron sponge obtained contains 13% of waste rock, which must be heated and slashed, or melted, to obtain a usable mass of iron. Impact. However, the process strongly marked its contemporaries because it exploited and validated the new understanding of chemical oxidation-reduction reactions in metallurgy .