Long3

CraigWatson Mikey Caygill Liam Burton**
 * //Longfield group3 -//

__**· What are the main three raw materials used to make iron?**__
 * Iron Ore
 * Coal
 * Limestone

The 3 main raw matirials are mined from mines and are taken from the mines via wagons to the corus factory they are also transported by railway carts.
 * __· Where do the raw materials come from and how are they transported to the plant?__**

__**· How and why are the raw materials processed before they are used in the blast furnace?**__ Not that much coal is used in the Blast Furnace to make iron. Most of the coal is packed into sealed ovens and heated until it breaks down. This produces coke, a much purer form of carbon than coal.

Coke has three important jobs in the Blast Furnace: 1. it burns to give the very high temperatures required for Blast Furnace reactions; 2. it produces the carbon monoxide gas that reduces the ore to iron; 3. it is strong and supports the column of raw materials in the furnace. this allows reactive gases to pass through the furnace.

__**· What role does each of these three raw materials play in the iron-making process?**


 * Page 6:**

2000 m3 in natural gas is used per household.
 * How Much energy is used in natural gas a year per household?**__

__**The energy produced from how many kg of hot metal is equivelent to the energy used in natural gas of one household?**__

64000Mj/m3

__**If 45% of the heat generated by the C combustions will leave the process through the waste gasses what will be the temperture of the liquid steel?**__ The Temperature of the liquid steel is 907.5°C

__**If we want to melt 1kg of scrap and heat it to 1650C how much energy is required?**


 * 27/02-08**__

in a 100kg: 94.9% of Fe = 94.9Kg
 * __Mass of each Kg of element__**

__How many are oxidised ?__ Fe efficiency = 98% so 2% gets oxidised.

2% of 94.9 = 0.02 X 94.9 = 1.898Kg

4.5% of C is oxidised because if there is too much C in the final product of the steel then it will be weak and could brake and be dangerus.

0.2% of Mn is oxidesised because agane if there is to much it will make the steel weak and could breake and could be dangerus.

All of the SI is oxidised because it is not wanted in the steel.

__**How many Kg of steel is produced from a 100Kg mixture?**__

**•** 100Kg- 1.898Kg of Fe – 4.5Kg of carbon – 0.25Kg of Si – 0.2Kg of Mn   •  = 93Kg


 * __How much energy is produced from oxidise?__**

Fe: 8.1614Mj C: 52.65 SI: 8.475