Keywords: reduction, without fusion, solid reducing agents, unreduced iron oxide. I. INTRODUCTION Sponge Iron is a term given to the product that is obtained by reduction of iron oxide ore in solid state. Since separation of iron thus produced from the gangue oxide is not readily possible in solid state. Sponge iron is a

The primary procedure mainly includes: (iron ore, rolled steel scales, etc.) → Drying → Magnetic Separation → Crushing → Sieving → Canning → Entering Primary Reduction Furnace → Sponge Iron. The secondary procedure includes: Sponge Iron→ Brushing → Magnetic Separation → Entering Secondary reduction furnace

A method. as set forth in claim 10, including the steps of withdrawing the hot sponge iron with at least a part of the residual reducing agent from the opposite end of the reduction chamber and separating it from the waste gases generated within the reduction chamher, and feeding the hot sponge iron and the residual reducing agent with the ...

Sponge iron is a highly processed form of iron ore which contains metallic iron in the range of 83-88% obtained by direct reduction without melting it. Due to high porosity, the resulting iron is called sponge iron. It is used as a raw material for manufacturing steel through electrical arc furnace and the induction furnace routes.

The fluoride ion, F –, is a suitable masking agent as it binds with Al 3 + to form the stable (text{AlF}_6^{3-}) complex, leaving iron in solution. As shown in Example (PageIndex{2}), we can judge a …

A more efficient separation is achieved using the fractional distillation apparatus in Figure (PageIndex{6})b. Packing the fractionating column with a high surface area material, such as a steel sponge or glass beads, provides more opportunity for the repeated process of vaporization and condensation necessary to effect a complete …

An apparatus for separating sponge iron products from the hot discharge material of a rotary furnace. A discharge chamber is connected to the rotary furnace for receiving the hot discharge material from the rotary furnace. A screen is provided at the lower end of the discharge chamber for separating the sponge iron products from the hot discharge …

Nonhazardous SULFATREAT hydrogen sulfide removal adsorbents are the industry's leading iron oxide product for the treatment of water-saturated gas. These proven products provide reliable and predictable …

Possible reducing agents and energy carriers in addition to the solid fuels such as bituminous coal and brown coal are given by gaseous fuels (coal gasification, …

A crushing and separating device for high-temperature sponge iron briquettes comprises a casing, a guiding chute and a rotary cutter. A fixed cutter head is arranged at an outlet of the guiding chute. The crushing and separating device is characterized in that a guide track is arranged in the casing, the guiding chute is disposed on the guide track, a lead screw …

Unlike blast furnace pig iron, the siliceous gangue in the iron ore remains in reduced iron sponge and needs to be removed in the …

The metallic iron in this process is produced by the reduction of iron oxide below the fusion temperature of iron ore (1535 deg C) by utilizing carbonaceous material present in the non-coking coal. As the iron ore is in direct contact with the reducing agent throughout the reduction process, it is often termed as direct reduced iron (DRI).

The iron sponge process is economically applied to gases containing small amounts of H2 S (< 300 ppm) operating at low to moderate pressures in the range of 50-500 psig (344.7 …

In sponge iron industry rotary kiln is the primary equipment,, considered bed as well as freeboard regions as separate sections so as to simulate these regions at similar time scal Through, For the reduction of iron oxide, the reducing agents are …

Well over 100 iron-making furnaces, which mostly rely on processes known as Midrex and HYL-Energiron, instead use natural gas to produce direct reduced iron (DRI), a kind of sponge iron.

Abstract and Figures. A survey is made on a typical coal based Indian sponge iron plant of capacity 500 t/d in order to identify the largest energy losses and find ways to increase the efficiency ...

After separation of sponge iron in the magnetic screen/pulley, the remains are collected as char. Char has good amount of fixed carbon (28% - 35%) and moderate GCV (2720 - 2780 Kcal/Kg). ... 8.897 tons of coal are used as reducing agent which contributes to 28.61 MKcal of heat. 4.28 tons of coal used as fuel which releases 25.47 MKcal of heat ...

What is sponge iron. Sponge iron, also known as DRI (direct reduced iron), bulk density 1.6-1.9g/cm3, apparent density 3.4-3.6g/cm3, typical size 4-20mm, is a kind of material produced by the reduction of iron ore with reducing gases such as H2 or CO gas generated from various carbon or hydrocarbon resources. The name is got because iron …

Sponge Iron or Direct Reduction Iron (DRI) refers to a porous metallic substance that is produced by the direct reduction of iron ore, where oxygen is removed from the iron oxide using coal or ...

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In this study, a variety of methods for extracting and separating copper and iron from CSS are reported. The extraction and separation technologies include physical methods (flotation, magnetic separation) and chemical methods (hydrometallurgical and pyrometallurgical). This paper reviews the different technical principles, parameter ...

The kinetics of steam reforming of methane catalyzed by sponge iron was studied at temperatures between 875°C and 1050°C. Results showed that sponge iron acts as a catalyst and methane ...

Superparamagnetic Iron Oxide Nanoparticle. Iron Oxide-Based Contrast Agents [SEDA-33, 970; SEDA-34, 757; SEDA-37, 590; SEDA-38, 499] Superparamagnetic iron oxide nanoparticles (SPIONs) have been approved by the FDA for treatment of anemia in adult patients with chronic renal disease [64R].

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 …

ABSTRACT OF THE DISCLOSURE An apparatus for separating sponge iron products from the hot discharge material of a rotary furnace. A discharge chamber is connected to the rotary furnace for receiving the hot discharge material from the rotary furnace. A screen is provided at the lower end of the discharge chamber for separating the sponge iron …

• The colours separate and move up the paper at different rates • Chromatography can be used to separate mixtures of coloured compounds. • Mixtures that are suitable for separation by chromatography include inks, dyes and colouring agents in food. Method 1. Simple chromatography is carried out on paper. 2.

natural gas, separating hydrogen gas from the syngas to replace current hydrogen produced from natural gas, and finally producing a biochar product, intended for utilization as a reducing agent in the sponge iron process (Pettersson et al 2016) Experiments with utilizing biochar as a reducing agent for the sponge iron process have beensists of ...

degree of metallization in sponge iron technology. Sponge Iron Making Process(Coal Based) Krupp-Renn Process : The Krupp-Renn process was developed in 1930. In this process high silica ore and lime stone is treated. In this process a mixture of -6.4mm ore and reducing agent like

separating agent for sponge iron in vietnam. A cast iron melting process comprising the steps of charging recarburizer in the lower portion of an electric arc furnace charging iron scraps and charging oxidizing slag forming agents and/or sponge irons and/or blowing oxygen therein to make oxidizing slag whereby a recarburizing reaction Panasonic …

• Sponge iron produced by this plant is of high grade which contains 80% Fe, 12% FeO and 8% gangue ma-terial. After separation of sponge iron in the magnetic screen/pulley, the remains arecollected as char. Char has good amount of fixed carbon (28 %- 35%) and moderate GCV (2720 - 2780 Kcal/Kg). Char is sold out-