iron fe

Question 1

iron is themost important metal in ………….

Answer 1

heavy indusries

Question 2

a2wly bltrtyp most abundant element

iron number ……

Answer 2

1. 1 - oxygen 2 - silicon 3- aluminum 4.iron
2. the 4th iron

Question 3

iron forms……..% of earth crust by weight and this mass increases gradually ……………..

Answer 3

1. 6.3%
2. as we come close to earth core

Question 4

iron has oxides tell me about them

Answer 4

1. oxides iron II oxide FeO
2. iron magntic oxide Fe₃O₄
3. iron III oxide Fe₂O₃

Question 5

we cannout found free iron except in

and the %

Answer 5

1. meteorites only
2. 90%

Question 6

1. iron found in form of
2. give me ex about impurities

Answer 6

iron found in form of natural ores contaning the diffrerent iron oxides with impurities

1. Silica SiO₂
2. Alumina Al₂O₃
3. quick lime Cao
4. Magnesium oxide Mgo

Question 7

iron ores in egypt tell me about their the ore .

1. chemical name ,
2. chemical symbol ,
3. properties % of iron in ore ,
4. the place in egypt

Answer 7

1. magnetite , magnetic iron oxide , Fe₃O₄ , black and has a magntic properties 45 : 70% , eastern dastern desert
2. hematite , Iron III oxide , Fe₂O₃ , blood red and easily redused , 50 : 60 Oasis area western desert
3. limonite , hydrated iron III oxide , 2Fe₂O₃ .3H₂O , yellow easily reduced , 20 : 60% , oasis area
4. siderite , iron II carbonate , FeCO3 , 30 : 42% yellowish grey and easily reduced ,

Question 8

the suitability of the ore for extraction of iron from it depends on 3 factors tell me about them

Answer 8

1. percentage of iron in ore
2. the type of the impurities in the ore
3. type of harmful elements mixed with it such as sulphur , phosphrous and arsenic

Question 9

extraction of iron from ore take 3 steps tell me about him

Answer 9

1. ore dessing
2. reduction
3. iron production

Question 10

diff ore dressing

Answer 10

it is done to increases the consntrtion of iron in the ore by getting rid of most of impurities to improve the physical and chemical properties of the ore

Question 11

improving physical properties depends on some processes tell me about them

Answer 11

1. crushing processes
2. sintering process
3. concentration processes

Question 12

diff crushing processes

Answer 12

it is process to change the large particles of the ore into small particals simmiler in size to be easily reduced

Question 13

diff sintring processes

Answer 13

it is a process in which the fine iron particles produced from crushing are collecting to form large particles simmler in size to be easily reduces

Question 14

diff concentration processes

Answer 14

it is a process aims to increase the concenttration of iron by separating impurities mixed with it by surface tension or magnetic separation or electrical separation

Question 15

improving the chemical properies how

Answer 15

Roasting

Question 16

diff roasting

Answer 16

it is the processes of heating iron ore strongly in air for drying ore and increase the concentration of iron in the ore

Question 17

roasting is strongly heated in air in order to 2 steps tell me about them and their equation

Answer 17

1. drying ore to increase the concentration of iron in the ore -

Fe CO_3(s) →H→ FeO_(s) + CO_{2 (g)} 2FeO_(S) + _1/2O_2(g)→H→ Fe₂O_3(s) 2Fe₂O₃ . 3H₂O_(s)→H→ 2Fe₂O_3(s) +3H₂O_(v)

1. oxidation of some impurities such as sulpher and phosphorus

S_(s) + O_2(g) →H→SO_2(g)

4P_(s) + 5O_2(g)→H→2P₂O₅

Question 18

diff reduction in ore

Answer 18

it is the poroces that reduced iron oxide to iron by two method depending on type of reducing agent

Question 19

in reducction in or there is a two method

Answer 19

1. blast (high) furnace
2. midrex furnace

Question 20

reduction of iron ore in blast furnace by ,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, and resulting from ……………..

Answer 20

carbon monooxide (CO) and resulting from coke (C)

Question 21

tell me the name and how to make to make the redusing agent in high furnace and by …………..

is o

Answer 21

1. carbon monoxide
2. C_(s) + O_2(g)→H→ CO_2(g) + heat _{<em>evolves </em>}
3. CO_2(g) + C_(s) →H → 2CO_(g)
4. carbon (coke)

Question 22

How to reducing Iron in blast furnace

what the type of iron oxide

and the oxidizing agent

Answer 22

1. Fe₂O_3(s) + 3CO_(g) →H→2Fe_(s) + 3CO_2(g)
2. oxide iron III oxide
3. carbon mono

Question 23

reducing agent in midrex furnace name and mix …………….. and ……….. which are obtained from ……………..

Answer 23

1. water gas
2. mixtere of carbon monooxide and hydrogen (CO, H2 )
3. natural gas

Question 24

how to prepare redusing agent in midrex furnace

Answer 24

2CH4_(g) + CO_2(g) =H₂O_(v) →cat/H→3CO_(g) +5H_2(g)

Question 25

how to reduced iron in midrex furnace

and reduced by any iron oxide

and any oxidizin agent

Answer 25

1. 2Fe₂O_3(s) + 3CO_(g) + 3H_2(g) →H→ 4Fe_(s) + 3CO_2(g) + 3H₂O _(v)
2. iron III oxide
3. CO + H₂

Question 26

the cycle of the redusing gases in midrex furnace can be used as closed cycle

Answer 26

duo to the produced gases ( CO₂ +H₂O) after reduction

of Fe₂O₃ are cool

check

Question 27

production process takes place in two steps

Answer 27

1. geting rid of impurities that obtained from redusing furnaces
2. addition of some elements to iron to prodused steel iron with the required properties for industrial purposes

Question 28

proudction takes place by 3 methods

Answer 28

1. oxgen converter
2. open furnace
3. electrical furnace

Question 29

it is important to dress irons ores before reduction

Answer 29

to increases the iron constrition in ores by improving physical and chemical proprties and get ride of impuritis to be eaisly redused

Question 30

it is important to roast iron ores before reduction

Answer 30

to increases the iron constrition in ores by get ride of impuritis and moistare to be eaisly redused

Question 31

sm3 the redusing agent ( H2 and CO )

Answer 31

( H2 and CO )

Question 32

iron is reduced in the blast furnace ……

Answer 32

CO

Question 33

iron reduced in the midrex furnace ……..

Answer 33

water gas ( C0 and H2 )

Question 34

steel can be redused from

Answer 34

open furnace and the electrical furnace and the oxygen converter

Question 35

iron ores where iron is in its most stable oxidation state

Answer 35

hematite ores

Question 36

sm3 oxidizing agent

Answer 36

( O2 , Cl2 )

Answer 44

red hot iron reacats with chlorine to give iron III chloride

Question 45

effect of non metals ( sulphur ) equation symbol and words

Answer 45

red hot iron reacats with sulphur to give iron II sulphide

Question 46

effect of water equation symbol and words

Answer 46

red hot iron reacats with water vapor to give magnetic iron oxide & hydrrogen 3Fe(s) + 4H2O(v) ……heat / 500 c ………Fe3O4(s) +4H2(g)

Question 51

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