retort process of sponge iron

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Modeling of Rotary Kiln for Sponge Iron Processing Using… pdf

furnace or Retort furnace. Due to its process advantages and product quality, SL/RN is mostly practiced. Some companies also adopt this after some modification. Use of Rotary Kiln as reactor makes it known as Rotary Kiln based Direct Reduction (RKDR). Strengths of Rotary Kiln produced Sponge Iron. Govt. Of India...

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application of solid reductant processes for direct ... -… pdf

the middle of the last century to produce sponge iron utilising iron ore concentrates and. charcoal' in a retort. (2) There are many other names and attempts associated with,the early development, of direct reduction which are only of historic in- terest today. These early processes of solid state reduction did not have any...

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Study of Reduction Behaviour Of Iron Ore Lumps A -… pdf

based Sponge Iron plants. The total gross reserves of coking and non coking coal in. India are approximately 11,602 and 71,400 million tons respectively. From this prospective, the rotary kiln (coal based) DR process have developed well and vigorously in the country instead of natural gas based Shaft furnace or Retort.

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Direct reduction : a review of commercial processes - epa…

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%)...

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Direct Reduction of Iron Ore | SpringerLink

27 Nov 2014 ... Commercially, DRI is generated in four different reactors: shaft (moving-bed), rotary kiln, fluidized bed, and retort (fixed-bed). Annual ... He is in charge of the two-year metallurgy program at Penn State's Shenango Valley campus and is involved in several research programs in process pyrometallurgy.

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PRODUCTION OF IRON AND STEEL POWDERS pdf

Höganäs sponge-iron process and the water-atomizing process. The former process is based ... These early grades of sponge iron powder were unannealed, containing up to 2% of reducible oxygen (H2-loss) .... These retorts are standing, 25 each, on rail-bounded cars which are clad with a thick layer of refractory bricks.

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Sponge Iron Manufacturers, Suppliers & Dealers in…

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 more.. Galaxy Enterprise. Dhamalpar, Rajkot (205 km from Ahmedabad)Sardharka Road, Wankaner,

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study of reduction behaviour of iron ore lumps by coal -… pdf

1.1 INTRODUCTION. DRI(directly reduced iron) or sponge iron is a porous solid-state production of direct reduction process. This is produced in lump or pellet form. DRI is being used in steel ... 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...

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Utilization of Low Grade Coal for Direct Reduction of Mill Scale to… pdf

bearing raw material by two different processes: Coal based and Gas based reduction processes shown in table 1[8, 9]. Table 1. Types of reduction processes to produce DrI or sponge iron reductant. Type of reduction process. Coal based. 1) rotary Niln processes (SL/rN, KruppYCoDIr, DrC, ACCAr, TDr etc.),. 2) retort...

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PROPERTIES AND FEATURES OF DIRECT REDUCED IRON…

31 Jan 2007 ... Thus, due to this porous structure, DRI is often called sponge iron. It should be noted that although the current blast furnace processes is fully established, many of the alternative ironmaking processes are still under development. However, direct reduction processes have reached some level of commercial...

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Study of Steel from Sponge Iron- At a Glance -… pdf

Coal based processes using rotary kiln. B. Coal based processes using shaft furnace. C. Retort processes using gas or coal as the reluctant. III. ROTARY KILN: Rotary kiln is reactor for sponge iron making, but it is also used for calcinations of lime stone, production of cement and manufacturing of refractory material.

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Investigation and characterization of contact mass ... - TUGraz… pdf

produced by the steam-iron-process. This process is working in two steps. Iron oxide from the contact mass is reduced with hydrogen in the first step and in the second ... component of the contact mass was sponge iron powder which was stabilized with 5, ..... With the use of multiple retorts it was possible to perform this.

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World direct reduction statistics - Midrex pdf

5 Jun 2014 ... 2013 World dri Production by Process. 2 total World Production: 75.2 Mt table of contents. 2011 .... meaning the need for additional DRI or pig iron. Interestingly enough, China is the world's largest steel pro- .... Other shaft Furnace/Retort Processes. 0.79. 0.01. 0.04. 0.15. 0.10. 0.09. 0.07. 0.15. 0.14. 0.04.

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Seminar on HYL Process - SlideShare

23 Dec 2013 ... There are many process are there for production of DRI like MIDREX Process, Rotary Klin Process etc. Generally all process are used the coal for reduction of iron ore. In substitution of coal we can use the natural gas and some fuel gas for reduction of iron ore and production of DRI commercially in HYL.

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Iron and Steel 2020.pdf - Indian Bureau of Mines pdf

(a) Coal-based Rotary Kiln Krupp Rein, ACCAR,. (I) Solid iron DRC etc. Sponge/ -. DRI Iron Rotary Hearth Fastmet etc.,. (b) Natural gas-based Shaft furnaces, Midrex,. Fluidised beds HYL-II etc.,. Or Retorts,. (ii) Liquid Iron Smelting Reduction (SR) Corex, Romelt, HISmelt & ITmk3 etc.,. Smelting is a process or a combination...

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"Iron by Direct Reduction". In: Kirk-Othmer… pdf

material is melted to form hot metal (pig iron). Approximately 96% of the world's iron is produced this way. (see Iron). However, in the blast furnace process energy ..... batch retort shaft rotary kiln fluid bed reductant source natural gas natural gas natural gas coal natural gas iron oxide form pellet/lump pellet/lump pellet/lump.

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comparison of different coal based direct reduction…

The desired DRI product quality features a high total iron and carbon content in addition to a low gangue and sulfur content. COMET rotary hearth process, Circofer process and kiln-type reactors provide some separation between the DRI and carbon char at the discharge of the reactor resulting to lower carbon and sulfur...

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Rotary Kiln Process of Making Sponge Iron - New Age… pdf

As touched upon earlier, sponge iron is mainly produced from ore by two different routes – (a) by reducing gases (CO and H2) in a shaft furnace, and (b) through direct treatment with coal in a rotary kiln. 2.2 IMPORTANT FEATURES. The coal based rotary kiln process of making sponge iron is the focus of the present write.

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Lane hydrogen producer - Wikipedia

The Lane hydrogen producer was an apparatus for hydrogen production based on the steam-iron process and water gas invented in 1903 by British engineer, Howard Lane. Contents. [hide]. 1 History; 2 Process description; 3 See also; 4 References. History[edit]. The first commercial Lane hydrogen producer was...

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i) Direct Reduced Iron: Production (PDF Download…

17 Sep 2016 ... During the last four decades, a new route of ironmaking has rapidly developed for direct reduction (DR) of iron ore to metallic iron by using noncoking coal/natural gas. This product is known as direct reduced iron (DRI) or sponge iron. Processes that produce iron by reduction of iron ore (in solid state)...

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ASHISH NAZAR | Professional Profile - LinkedIn

After attaining graduate qualification worked in different companies, preferably in sponge iron making process for last 26 years. Started carrier with Sunflag at bhandara, ... This pilot plant will be based on self established process called as High Pressure Vertcal Retort Process (HPVRP). This process will use coal gas as a...

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David Wilson (1934-2013) | ECT

24 Jan 2013 ... The staff at ECT are today mourning the sudden passing of the inventor of the Coldry and Matmor processes, David Wilson. We wish to express our ... The goal was to produce something akin to sponge iron; a combination of iron, residual unreduced iron oxides and slag. Sponge iron is considered a 'low...

Technologies from National Metallugrical Laboratory

Description: The technology for the preparation of Zinc rich primer based on alkali silicate. The unique process to make post cure zinc silicate primer based on enriched sodium silicate (where silica to alkali ratio is high). IT is thinable with water. After application of the primer, chemical wash is given for curing the primer.

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Manufacturing Process - Sree Metaliks Ltd

Most solid reductant process use coal as reductant due to abundantly available non-coking coal. The different coal based processes include retort/shaft, tunnel kiln, rotary kiln, Lurgi etc. The process to be adopted is the rotary kiln process using low-grade coal to reduce sponge grade iron ore. The locally available raw...

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Retorting amalgam and recovering gold from slag

THE FOLLOWING INFO IS PRESENTED FOR ITS HISTORIC VALUE. PROCESSING WITH MERCURY IS NOT RECOMMENDED. Retorting and Percentage of Metal in Amalgam. The amalgam is retorted to free the gold from the mercury. This is accomplished in a closed cast-iron vessel having a tube leading from it to carry...

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Direct Reduction Technologies | SAIL

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 ... Shaft furnaces; Rotary kiln furnace; Fluidised bed and; Retort process. Reducing gasses are...

Gasworks - Wikipedia

Also known as an Iron Sponge, this removed hydrogen sulfide from the gas by passing it over wooden trays containing moist ferric oxide. The gas then passed on to the gasholder and the iron sulfide was sold to extract the sulfur. Waste from this process often gave rise to blue billy, a ferrocyanide contaminant in the land...

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CPC Definition - C21B MANUFACTURE OF IRON OR STEEL…

The production of iron or steel starting from iron ores, e.g. the production of pig-iron; ... Details or accessories of furnaces, kilns, ovens or retorts in general ... C21B 2100/40 concerns the specific purification and reuse of exhaust gases in metallurgical processes, while B01D 2258/025 concerns only the purification process in...

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world direct reduction statistics - Midrex pdf

23 Jun 2015 ... The world's direct reduction industry produced 74.55 million tons of DRI Products in 2014 according to data compiled by Midrex Technologies, Inc. and audited by. World Steel Dynamics. Production fell slightly from 2013 due to natural gas shortages and curtailments in India, and operational disruptions in...

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Sponge Iron Industry - Central Pollution Control… pdf

20 Mar 2007 ... 3.13 Rotary Hearth Process. 38. 3.13.01 Inmetco Process. 38. 3.13.02 Salem Direct Reduction Process. 38. 3.14 Retort Process. 40. 3.14.01 Hoganas ... Pollution Mitigation as reported by Plants. 9. 5.1 : Status of Pollution Mitigation Measures in. 87. Sponge Iron Plants. 10. 5.2 : Stack Monitoring Data. 99.

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Sponge Iron Industry: The Regulatory Challenge - Centre… pdf

29 Apr 2010 ... of the kiln. Some common customized processes in the country are – Jindal, TDR, Sponge Iron India. Limited, Orissa Sponge Iron Limited, Popurri Engineering, etc33. Rotary hearth and retort processes are widely used all over the world. Some of these are: □. INMETCO: The process uses a rotary hearth...

Zaporozhye Titanium & Magnesium Combine - Manufacturing…

Manufacture of titanium by magnesium-and-thermal reduction with vacuum distillation involves the process of cooling of sponge (received by magnesium reduction of titanium tetrachloride) ... After cooling the separation apparatus is disassembled, and the retort containing titanium sponge block is routed for processing.

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Powder Production Technologies - Powder Metallurgy…

The filled retort is then passed through a long kiln, where the reduction process leaves an iron "cake" and a slag. In subsequent steps, the retort is emptied, the reduced iron sponge is separated from the slag and is crushed and annealed. The resultant powder is highly irregular in particle shape, therefore ensuring good...

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