MENU

Get Price And Support

Fill in this form or click the service online, all questions will be answered.

what is coke slag and haematite

extraction of iron from blast furnace slag

The blast air causes the iron oxides, flux, and coke to react and iron, carbon monoxide and blast-furnace slag is produced The molten iron and blast-furnace slag is collected at the base of the furnace, while the gases are recirculated for fuel in the sinter process, after …

GCSE CHEMISTRY - Extraction of Iron - …

Haematite is iron(III) oxide - Fe 2 O 3. The iron ore contains impurities, mainly silica (silicon dioxide). Limestone (calcium carbonate) is added to the iron ore which reacts with the silica to form molten calcium silicate in the blast furnace. The calcium silicate (called slag) floats on the liquid iron. Since iron is below carbon in the reactivity series, iron in the ore is reduced to iron ...

When the ore haematite is burnt in air with coke …

26.07.2020· When the ore haematite is burnt in air with coke around `2000 K` along with lime, the process not only produces steel but also produces a silicate slag that …

Give the reactions taking place in the blast …

Give the reactions taking place in the blast furnace, when haematite, coke and lime stone are added to it. 0 votes . 24 views. asked Jan 24, 2019 in Class X Science by aditya23 (-2,151 points) (i) Give the reactions taking place in the blast furnace, when haematite, coke and lime stone are added to it. (ii) What is the purpose of adding lime stone in the extraction of iron from haematite ...

The extraction of Iron in a blast furnace …

(Removal of the acid impurities) When haematite is added to the furnace it is not pure, there are a lot of impurities. It contains sand (silicon dioxide) To remove this limestone is added (CaCO3). The limestone thermally decomposes to form calcium oxide and carbon dioxide. The calcium oxide then reacts with the slightly acidic silicon dioxide to form Calcium Silicate (slag)

Extraction of Iron from Haematite - KDRChemistry

The raw materials are added into the top of the furnace : Iron ore (Haematite, Fe2O3), Coke (Carbon, C), Limestone (CaCO3) Step 3: It is heated by blowing hot air at the base of the blast furnace. Step 4: This causes the coke to burn to form Carbon Dioxide (CO2). The process produces a very exothermic reaction, with the temperature rising as ...

EXTRACTION OF IRON IN A BLAST FURNACE reduction haematite O

Haematite is added to the top of the furnace along with coke (i.e. carbon) and limestone. Three reactions take place during this extraction. Firstly, the carbon in the blast furnace burns with the hot air to form carbon dioxide. This reaction produces a lot of heat, and is the main source of heat in the furnace. carbon + oxygen carbon dioxide C + O 2 CO 2 The heat produced by the reaction ...

Extraction of Iron from Haematite | Grade 12 …

c. Zone of slag formation:-This zone lies above zone of fusion and it has temp of about 1000 0 c. In this zone calcium carbonate dissociate forming can (calcium oxide) which combines with silica (SlO 2) present as impurity in Haematite forming calcium silicate (CaSiO 3) as slag. CaCo 3 → CaO + CO 2

What is the role of coke in a blast furnace? - Quora

Role of coke in a blast furnace are following... 1. Coke is source of heat in blast furnace 2. Coke act as a reducing agent for iron ore 3. Coke provide permeability to the burden in blast furnace due to which gas pass in counter direction

What's the function of limestone and Coke when …

Limestone-Limestone undergoes calcination to form calcined lime in furnace temperature.Calcined lime reduces the liquidus temperature of impurities in raw material added in blast furnace thereby helps in easy removal of impurities in form of slag ...

Give the reactions taking place in the blast …

Give the reactions taking place in the blast furnace, when haematite, coke and lime stone are added to it. 0 votes . 24 views. asked Jan 24, 2019 in Class X Science by aditya23 (-2,151 points) (i) Give the reactions taking place in the blast furnace, when haematite, coke and lime stone are added to it. (ii) What is the purpose of adding lime stone in the extraction of iron from haematite ...

use of steel slag in hematite production

Steel slag can also replace granulated blast furnace slag up to 10% in the manufacture of Portland Slag Cement. Steel slags are produced at steel melting shop during steel manufacturing. To produce steel, removal of excess silicon and carbon from iron is achieved through oxidation by adding limestone and coke. The steel slag contains

Extracting iron - Redox, extraction of iron and …

Step 2 – More coke is added to the furnace and reduces the carbon dioxide into carbon monoxide, ... The calcium oxide then reacts with silica (sand) impurities in the haematite, to produce slag ...

Use Of Steel Slag In Hematite Production

use of steel slag in hematite production. use of steel slag in hematite production Hurstwic: Iron Production in the Viking Age. At the Norse settlement in L'Anse aux Meadows in Newfoundland, Canada, there is clear evidence that Norsemen harvested and smelted bog iron to use as the raw material . Chat With Sales; Basics of slag production ...

Describe the extraction of Iron from its Hematite …

The mixture of CaSi03 and Ca Al204 which remains molten at the furnace temperature is known as slag. The molten free iron runs downward to the bottom of the furnace and is withdrawn through a tap hole at short intervals. The slag being lighter floats on top of the molten iron and is a runoff. The slag is not wasted and is a useful by-product.

(Solved) - When the ore haematite is burnt in air …

1 Answer to When the ore haematite is burnt in air with coke around 2000 o C along with lime, the process not only produces steel but also produces a silicate slag that is useful in making building materials such as cement. Discuss the same and show through balanced chemical equations. - 905602

The Blast Furnace and extraction of Iron from its …

Start studying The Blast Furnace and extraction of Iron from its Iron Ore. Learn vocabulary, terms, and more with flashcards, games, and other study tools.

The Blast Furnace Flashcards | Quizlet

Start studying The Blast Furnace. Learn vocabulary, terms, and more with flashcards, games, and other study tools.

Chemistry of the Ironmaking by Blast Furnace …

Slag formation. Gangue materials in the ores such as silica and alumina and ash in the coke are the basis of the slag that collects in the hearth of the furnace. The formation of fusible slag is facilitated by the inclusion of fluxes in the burden materials such as lime (CaO) and magnesia (MgO). These elements are used to produce a slag of the ...

The Extraction of Iron - Chemistry LibreTexts

Coke is cheap and provides both the reducing agent for the reaction and also the heat source. The most commonly used iron ores are hematite, \(Fe_2O_3\), and magnetite, \(Fe_3O_4\). The Blast Furnace . The significant reactions occuring within the Blast Furnace can be described via the following steps showing how the reducing agent varies depending on the height in the furnace (i.e. on the ...

Describe the extraction of Iron from its Hematite …

The mixture of CaSi03 and Ca Al204 which remains molten at the furnace temperature is known as slag. The molten free iron runs downward to the bottom of the furnace and is withdrawn through a tap hole at short intervals. The slag being lighter floats on top of the molten iron and is a runoff. The slag is not wasted and is a useful by-product.

Use Of Steel Slag In Hematite Production

The steel slag produced during the primary stage of steel production is referred to as furnace slag or tap slag. This is the major source of steel slag aggregate. . The use of steel slag as an aggregate is considered a standard practice in many jurisdictions, with applications that include its use in granular base, embankments, engineered .

Use Of Steel Slag In Hematite Production

Use Of Steel Slag In Hematite Production. Iron ore uses in cement production contre-temps.be. uses of hematite in cement Our supply of Hematite iron ore for Cement Industry is industrynormal sie of used. use of steel slag in hematite production . use of hematite in production of cement. use of steel slag in hematite production customcreation.co.a. Specular hematite iron ore

extraction of iron from haematite ore by tutor

Iron is extracted from its ore haematite in a blast furnace The ore is led into the top of the furnace along with coke and limestone The limestone decomposes in the hot furnace forming calcium oxide This reacts with the sandy impurities silicon dioxide to form a slag. Home; ... extracting iron from haematite ore Iron ores in the form of ...

Hematite - an overview | ScienceDirect Topics

Iron ore consists primarily of hematite (Fe 2 O 3) and magnetite (Fe 3 O 4) ... begins with reduction of the ferrous oxides by the addition of carbon or coke to the molten ore, usually in a blast furnace. Limestone is added to produce a predominantly lime–silica molten slag floating atop the steel bath.

Extraction of Iron & Concentration of Ore - An …

The Haematite then reacts with Carbon in the cast iron to give pure iron and carbon monoxide gas. Fe 2 O 3 +3C→2Fe+3CO. Limestone then creates the slag. Impurities such as S, Si pass into the slag and the slag later can be easily separated to yield pure iron. The iron minerals that are used as ores are hematite, magnetite, limonite, and siderite.

(Solved) - When the ore haematite is burnt in air …

When the ore haematite is burnt in air with coke around 2000 o C along with lime, the process not only produces steel but also produces a silicate slag that is useful in making building materials such as cement. Discuss the same and show through balanced chemical equations.

gcse 2. Blast furnace extraction of iron recycling, …

haematite, mainly iron(III) oxide, formula Fe 2 O 3; and magnetite, triiron tetroxide, formula Fe 3 O 4. A solid mixture of magnetite/haematite ore, coke and limestone is continuously fed into the top of the blast furnace. The double role and function of coke (carbon) 1st Coke function (i) As a fuel

Chemistry of the Ironmaking by Blast Furnace …

Slag formation. Gangue materials in the ores such as silica and alumina and ash in the coke are the basis of the slag that collects in the hearth of the furnace. The formation of fusible slag is facilitated by the inclusion of fluxes in the burden materials such as lime (CaO) and magnesia (MgO).

Blast Furnace - an overview | ScienceDirect Topics

Blast furnaces have grown considerably in size during the twentieth century. In the early days of the twentieth century, blast furnaces had a hearth diameter of 4–5 m and were producing around 100,000 THM per year, mostly from lump ore and coke. At the end of the twentieth century the biggest blast furnaces had between 14 and 15 m in hearth diameter, and were producing 3–4 million tons of ...

Related equipment used in this plant: