CONSTED is a leading and pioneering enterprise with the most advanced international level in R&D, manufacturing and selling of large-scale crushing & screening plants , industrial milling equipments and beneficiation plants.

contact info

social networks

Direct Reduced Iron and its Production Processes – IspatGuru

Mar 16, 2013· Direct reduced iron (DRI) is the product which is produced by the direct reduction of iron ore or other iron bearing materials in the solid state by using non-coking coal or natural gas. Processes which produce DRI by reduction of iron ore below the melting point of the iron are normally known as the direct reduction (DR) processes.

Steel and raw materials

recycled steels and direct reduced iron (DRI) or hot metal, and electricity. On average, the recycled steel-EAF route uses 710 kg of recycled steel 586 kg of iron ore, 150 kg of coal and 88 kg of limestone and 2.3 GJ of electricity, to produce 1,000 kg of crude steel.3 Around 70% …

12.4 Ferroalloy Production - US EPA

12.4 Ferroalloy Production 12.4.1 General Ferroalloy is an alloy of iron with some element other than carbon. Ferroalloy is used to physically introduce or "carry" that element into molten metal, usually during steel manufacture.

MICROWAVE APPLICATIONS | Microwave Processing of …

Sintering. Microwave heating has been touted as a means of sintering ceramics since the early 1970s. Microwave sintering of a number of oxides and nonoxide ceramics ranging from low-loss materials like Al 2 O 3 to relatively high-loss materials such as SiC, TiB 2, and B 4 C has been reported.

The Use of Hydrogen in the Iron and Steel Industry

DRI – Direct Reduced Iron 3 THE USE OF HYDROGEN IN THE ... • DRI is iron ore that has been reduced to iron with syngas without melting • DRI processes in U.S. generally use natural gas to reduce the ore 6 THE USE OF HYDROGEN IN THE IRON AND STEEL INDUSTRY ELECTRIC ARC FURNACE .

Pig Iron | International Iron Metallics Association

Direct Reduced Iron (DRI) Granulated Pig Iron (GPI) International Iron Metallics Association. The IIMA is dedicated to those involved in the ore-based metallics value chain - raw material supply, production and transformation, trading and distribution, transportation and logistics, technology and equipment. Its members account for more than 80% ...

Direct Reduced Iron - Midrex Technologies, Inc.

May 04, 2021· Direct Reduced Iron. The need for a dependable and clean source of iron will continue to increase as steelmaking grows and expands globally. Regardless of the steelmaking route, there is a form of direct reduced iron (DRI) for every application. DRI is a premium ore-based metallic (OBM) raw material made by removing chemically-bound oxygen from ...

MIDREX Processes -

1. Characteristics of reduced iron The MIDREX process produces direct reduced iron (hereinafter referred to as DRI ). The process reduces iron ore using a reforming gas made from natural gas. The DRI is used mainly as the raw material for electric arc furnaces (EAFs), as …

- (

- ( (247) (4) . . [] physiological significance of silicon in rice plants: the influence of pH on silicon uptake of rice plants and the presence of silica in the cell wall. tianshicanyi 48 100 .

Reduction of metal oxides using thermogravimetry under ...

Jun 03, 2021· In this study, we focused on the reduction reaction of metal oxides using graphite as a reducing agent, where the contact point between the solids becomes the reaction point. Several studies have shown that the reduction of iron, scandium, and magnesium oxides is effective under microwave irradiation. 10–15 10. N.

Seminar on HYL Process - SlideShare

Dec 23, 2013· 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. 4. DRI is the Direct reduction of Iron Ore by some reductant. The Reductant may be the Solid or Gas.

Basic Principles of Atomic Absorption and Atomic Emission ...

44 • Flame Emission -> it measures the radiation emitted by the excited atoms that is related to concentration. • Atomic Absorption -> it measures the radiation absorbed by the unexcited atoms that are determined. •Atomic absorption depends only upon the number of unexcited atoms, the absorption intensity is not directly affected by the

Microwave-assisted synthesis :: Anton Paar Wiki

Microwave-assisted synthesis. "Microwaves have the potential to become the bunsen burners of the 21st century"- Prof. C. Oliver Kappe, University of Graz, Austria. Compared to conventional reflux heating, microwave heating in modern reactors allows for increasing yields while significantly reducing reaction times down to a few minutes only.

Introduction to microwaves - SlideShare

Jun 28, 2015· Microwave Engineering Prof. Tapas Mondal Associate Professor Department Of Electronics and Communication Engineering West Bengal, India Dr B C Roy Engineering College, Durgapur 2. Objectives • To provide the basic theory pertaining to microwaves and other high- frequency devices and subsystems.

Atomic emission spectroscopy - SlideShare

Apr 28, 2019· Atomic Emission Spectroscopy MAHENDRA G S M.Pharm. 2. Introduction • Technique is also known as OPTICAL EMISSION SPECTROSCOPY (OES) • The study of radiation emitted by excited atoms and monatomic ions • Relaxation of atoms in the excited state results in emission of light • Produces line spectra in the UV-VIS and the vacuum UV regions. 3.

Microwave Bench General Measurement Setup - Tutorialspoint

Among the Microwave measurement devices, a setup of Microwave bench, which consists of Microwave devices has a prominent place. This whole setup, with few alternations, is able to measure many values like guide wavelength, free space wavelength, cut-off wavelength, impedance, frequency, VSWR, Klystron characteristics, Gunn diode characteristics, power measurements, etc.

Characterisation of the Physical and Metallurgical ...

The blast furnace is still the dominant form of iron production, but over the years, direct reduction methods have increased due to a number of reasons. Overall, iron production methods have optimal requirements with respect to the feed materials especially iron ore. In this study, tests were carried out on Muko iron ore from Uganda to analyse its suitability to meet the feed requirements of ...

CO2 Reduction Catalysts and Catalysis

Reduction • Water Gas Shift Reaction • Introducing CO. 2. Reduction Catalysts • Methods • Synthesis of Catalysts and Chemical Environments • CV and Theory • IR-SEC • Results • Smieja • Franco • Riplinger • Fischer-Tropsch • Conclusions . 4 •

Direct reduced iron and production of DRI part 2 - YouTube

Mar 11, 2016· The presentation describes different processes for the production of direct reduced iron.

13. Fresnel's Equations for Reflection and Transmission

Definitions: "S" and "P" polarizations 2. "P" polarization is the parallel polarization, and it lies parallel to the plane of incidence. 1. "S" polarization is the perpendicular polarization, and

Industrial Process Heating - Technology Assessment

48 in direct contact with the material (i.e., direct heating via convection), or utilize a radiant heat transfer 49 mechanism by routing the hot gases through radiant burner tubes or panels and thus separated from 50 the material (i.e., indirect 51 heating). Examples of fuel-52 based process heating 53 equipment include ovens, fired


Direct methods are considered to provide true measurements of moisture content, and are used to calibrate more practical and faster indirect methods. Direct methods are mainly devoted to research purposes because it requires special equipment (e.g. an oven and analytical balance), and measurements can only be implemented in laboratories.

Extraction of Iron | Metallurgy | Blast Furnace and Reactions

This kind of iron is called Cast Iron and has a slightly lower carbon content 2 – 3 %. This is even harder than pig iron. Wrought Iron/ Malleable Iron. Wrought iron is the purest form of iron available commercially available and is prepared from cast iron by heating cast iron in a furnace lined with Haematite (Fe 2 O 3). The Haematite reacts ...

Direct Reduced Iron (DRI) Production Plant

Direct Reduced Iron (DRI) Production Plant NIPPON STEEL ENGINEERING CO., LTD. Basic Concept or Summary S-16 u A direct reduced iron (DRI) production plant is a shaft reduction furnace to produce DRI with large metal iron content by directly reducing iron ore (or iron ore pellets) with reducing gases.

January 2021 Edition - Agilent

Sep 01, 2016· An optimized microwave waveguide creates concentrated electromagetic fields at the torch (Figure 2). Then an axial magnetic field and a radial electrical field focus and contain the microwave energy to create a plasma. Figure 2. A microwave waveguide creates concentrated electromagnetic fields around the torch. > Return to Table of Contents

Toxicity Characteristic Leaching Procedure (TCLP)

determination of whether the solid portion of the waste requires particle size reduction (Section 7.1.3); and (4) determination of which of the two extraction fluids are to be used for the TCLP extraction of the waste (Section 7.1.4). 1. Preliminary determination of percent solids: Percent solids is …

Space-Based Solar Power | Department of Energy

Mar 06, 2014· Self-assembling satellites are launched into space, along with reflectors and a microwave or laser power transmitter. Reflectors or inflatable mirrors spread over a vast swath of space, directing solar radiation onto solar panels. These panels convert solar power into either a microwave or a laser, and beam uninterrupted power down to Earth.

ppt on steel making.ppt - Production of Iron and Steel Raw ...

In the blast furnace the reduction of the iron ores (Fe 2 O 3) to metallic iron and the melting of the iron and by products take place. Both, reduction and melting need high temperature, which is generated by combustion of coke using hot blast, blown in via tuyeres located around the furnace. The reduction gas leaving the furnace is called top ...

Synthesis of nanoparticles- physical,chemical and biological

Jul 03, 2013· Synthesis of nanoparticles- physical,chemical and biological 1. SYNTHESIS OF NANOPARTICLES 2. Materials having unique properties arising from their nanoscale dimensions Nanomaterials with fast ion transport are related also to nanoionics and nanoelectronics Nanoscale materials can also be used for bulk applications Nanomaterials are sometimes used in solar cells …

Direct Reduction Process - an overview | ScienceDirect Topics

The direct reduction processes in combination with the melting of directly reduced iron to produce steel in the EAF offer an alternative to the BF-BOF route. The basis of the direct reduction process is that solid sponge iron is produced by removing oxygen from …

Advanced Reduction Processes: A New Class of Treatment ...

May 15, 2013· Abstract A new class of treatment processes called advanced reduction processes (ARPs) is proposed. ARPs combine activation methods and reducing agents to form highly reactive reducing radicals that degrade oxidized contaminants. Batch screening experiments were conducted to identify effective ARPs by applying several combinations of activation methods (ultraviolet light, …

What Is Heat Transfer? Conduction, Convection, Radiation ...

Microwave radiation emitted in the oven is an example of radiation. UV rays coming from the sun is an example of radiation. The release of alpha particles during the decaying of Uranium-238 into Thorium-234 is an example of radiation. Unit of Heat Transfer

Taguchi method for optimization of reaction conditions in ...

Dec 24, 2019· However, after microwave glycolysis reaction the intensity of 1720 cm −1 peak is greatly reduced and in case of ECAT1–3, the one catalyzed by zinc stearate, the peak appears only as small hump reinforcing our argument that amongst the investigated metal catalysts, zinc stearate is …