What are the 3 raw materials required in the process of iron extraction?

The three raw materials used in making pig iron (which is the raw material needed to make steel) are the processed iron ore, coke (residue left after heating coal in the absence of air, generally containing up to 90\% carbon) and limestone (CaCO3) or burnt lime (CaO), which are added to the blast furnace at intervals.

What is the extraction process of iron ore?

Iron is extracted from iron ore in a huge container called a blast furnace. Iron ores such as haematite contain iron(III) oxide, Fe 2O 3. The oxygen must be removed from the iron(III) oxide in order to leave the iron behind. Reactions in which oxygen is removed are called reduction reactions.

What are the methods of extraction of ores?

The basic extraction of metals from ores has the following steps.

• Grinding and Crushing. The bigger chunks of the ore extracted are crushed and ground in ball mills and crushers.
• Concentrating the Ore. This step concentrates the ore by performing the removal of impurities.
• Calcination and Roasting.

What are the current methods of iron extraction?

Iron Extraction Process

• Burdening. Exact quantities of burdening materials such as sinter, pellets, lump ore, alloys, and coke are transported alternately via a belt conveyor to the blast furnace head.
• Cowper.
• Blast furnace.
• Casting bay.

Which of the following steps are involved in extraction of iron from haematite ore?

Hint: Haematite is an oxide ore of iron. The steps of extraction of iron are the concentration of ore, calcination, and smelting. The calcined ore is reduced with carbon.

What are the main ores of iron?

Hematite and magnetite are by far the most common types of ore. Pure magnetite contains 72.4 percent iron, hematite 69.9 percent, limonite 59.8 percent, and siderite 48.2 percent, but, since these minerals never occur alone, the metal content of real ores is lower.

What are the different stages of extraction of iron from haematite ore?

Extraction of Iron from Haematite

• Concentration: Haematite ore being oxide ore is concentrated by gravity separation process using hydraulic separator.
• Calcination:-
• Smelting:-

What are the stages involved in extraction of metals?

Some common steps involved in the extraction of metals from their ores are : (i) Crushing and pulverization (ii) Concentration or dressing of the ore (iii) Calcination or roasting of the ore (iv) Reduction of metal oxides to free metal (v) Purification and refining of metal.

What are the processes of mining?

There are five stages of the mining life cycle, these include: exploration, mine-site design and planning, construction, production, and closure and reclamation.

What are the types of iron ore?

There are four main types of iron ore deposits worked currently, depending on the mineralogy and geology of the ore deposits. These are magnetite, titanomagnetite, massive hematite and pisolitic ironstone deposits.

What is the main ingredient in iron?

Given the blast furnace, the main ingredients are (i) ferric oxide ; and (ii) coke , which can be oxidized up to give CO , which effects the reduction of the iron ore to iron, and maybe later steel.