tunnel kilnprocessofironore reduction

SPONGE IRON PRODUCTION FROM ORE -COAL COMPOSITE . In the year 1908 use of tunnel kiln started for iron oxide reduction. This process was invented by E.Sieurin as Hoganas process. In 1954, more kilns came in operation in SWEDEN and USA. Presently it is more popular in China for sponge iron production from beneficiated iron ore fines cakes. get price

howironis made - material, manufacture, making, history

Separating the iron from the slag. 2 The melted iron sinks to the bottom of the furnace. The limestone combines with the rock and other impurities in the ore to form a slag which is lighter than the iron and floats on top. As the volume of the charge is reduced, more is continually added at the top of the furnace

limestoneanddolomiteand their use inironand steel

May 08, 2013 · Limestone and lime products are used as fluxing material both in ironmaking and in steelmaking. Basically limestone is used as a slag former, while dolomite is used as a slag former, slag modifier and as a refractory material. The process of iron making is …

the step-by-step process of producing iron from iron ore

Oct 23, 2017 · The raw materials used in the blast furnace to produce high-quality pig iron are iron-ore, coke, limestone, and sinter. Now, these iron ores are nothing but oxides of iron that contains other materials like limonite, magnetite, hematite and etc

production of iron and steel- slideshare

Apr 27, 2015 · 4/27/2015 13 IRON MAKING -- summary • Vertical shaft furnace, called a blast furnace •Iron ore, coke, and limestone are charged, •Hot air ( ~1200 0C) is pumped into the bottom of the blast furnace, •Limestone attracts impurities, a “slag” forms and floats on top of the molten iron, •Iron is drawn off, or “tapped”, and poured into moulds, known as pig iron Engineering Materals II (MEng 2122)

iron and steel industry: process, location and earlygrowth

The basic process involved into the iron and steel production is the refinement of iron ore. Usually, coal and limestone is used for this refinement. The heat harnessed from coal is required to run blast furnaces. Limestone is used as fluxing material, which helps to remove impurities from iron ore. The product thus produced is widely known as pig iron. The further processing of pig iron produces cast iron, wrought …

(pdf)production of lime using limestone obtained from

The schematic representation of lime production process is shown in figure 3.1 10 Size Limestone Water Screen Separator Muffle Hydrator Furnace Crushing 11 Hydrated Lime Ca(OH2) Quicklime Quicklime Fig 3.1 Schematic Representation of Lime Processing Lump CHAPTER THREE 3.0 RESULT AND DISCUSSION 3.1 Result Batch A. Furnace operation Limestone

limestone its processing and application in iron and

Jul 07, 2017 · Application of limestone and lime in iron and steel plant. During the production of iron by blast furnace (BF) route, limestone is added either in the process of sintering or as a direct feed in the blast furnace. Limestone is normally added during ironmaking for obtaining either neutral or …

iron production - chemistry libretexts

Aug 15, 2020 · The iron found in iron ores are found in the form of iron oxides. As a result of these impurities, iron must be first separated from the gangue and then converted to pure iron. This is accomplished by the method of pyrometallurgy, a high temperature process. The high temperatures are needed for the reduction of iron and the oxidation of the limestone which will be seen below

limestone and dolomite and their use in iron and steel

May 08, 2013 · Limestone and lime products are used as fluxing material both in ironmaking and in steelmaking. Basically limestone is used as a slag former, while dolomite is used as a slag former, slag modifier and as a refractory material. The process of iron making is …

production of iron and steel - slideshare

Apr 27, 2015 · 4/27/2015 13 IRON MAKING -- summary • Vertical shaft furnace, called a blast furnace •Iron ore, coke, and limestone are charged, •Hot air ( ~1200 0C) is pumped into the bottom of the blast furnace, •Limestone attracts impurities, a “slag” forms and floats on top of the molten iron, •Iron is drawn off, or “tapped”, and poured into moulds, known as pig iron Engineering Materals II (MEng 2122)

tunnel kiln process of iron ore reduction

SPONGE IRON PRODUCTION FROM ORE -COAL COMPOSITE . In the year 1908 use of tunnel kiln started for iron oxide reduction. This process was invented by E.Sieurin as Hoganas process. In 1954, more kilns came in operation in SWEDEN and USA. Presently it is more popular in China for sponge iron production from beneficiated iron ore fines cakes. get price

iron and steel industry: process, location and early growth

The basic process involved into the iron and steel production is the refinement of iron ore. Usually, coal and limestone is used for this refinement. The heat harnessed from coal is required to run blast furnaces. Limestone is used as fluxing material, which helps to remove impurities from iron ore. The product thus produced is widely known as pig iron. The further processing of pig iron produces cast iron, wrought iron …

(pdf) production of lime using limestone obtained

The schematic representation of lime production process is shown in figure 3.1 10 Size Limestone Water Screen Separator Muffle Hydrator Furnace Crushing 11 Hydrated Lime Ca(OH2) Quicklime Quicklime Fig 3.1 Schematic Representation of Lime Processing Lump CHAPTER THREE 3.0 RESULT AND DISCUSSION 3.1 Result Batch A. Furnace operation Limestone

electric arc furnace process- an overview | sciencedirect

As indicated in Fig. 2.1, the raw materials used in the BF-BOF system include iron ore, coal, fluxes (mainly limestone and dolomite), recycled steel scraps, and alloys. On average, this process uses approximately 1400 kg (3086 lb) of iron ore, 800 kg (1764 lb) of coal, 300 kg (661 lb) of flux, and 120 kg (265 lb) of recycled steel to produce 1000 kg (2205 lb) of crude steel

how doescoke fit into the steelmaking process?

Jan 02, 2015 · The BOF process uses 25%–35% old steel (scrap) to produce new steel. On average, this process uses 1,400 kilograms (or kg) of iron ore, 770 kg of coal, 150 kg of limestone, and 120 kg of