What are important ore of Iron ore ?

Important Ores of Iron:

SN	Ores	Formula
1	Haematite (Red)	Fe2O3
2	Magnetite	Fe3O4
3	Siderite or Spathic	FeCO3
4	Iron Pyrite (fool's Gold)	FeS2
5	Goethite	FeO(OH)
6	Limonite	2Fe3O4.3H2O
	Others Ores
7	Ilmenite  (FeO+TiO2)	FeTiO3
8	Chromite (FeO+Cr2O3)	FeCr2O4

What is composition of Wrought Iron ?

Wrought iron:

Wrought is made by heating cast iron with haematite (Fe₂O₃) which oxidises C to CO, S to SO₂ Si to SiO₂, P, P₄O₁₀ and Mn to MnO . Where CO and SO₂ escapes, manganese oxide (MnO) and Silica (SiO₂) combine to form slag.

Similarly phosphorus pentoxide combines with haematite to form ferric phosphate slag.

What is composition of Grey Cast Iron ?

Grey Cast Iron: However when re molted pig iron is slowly cooled, Grey cast iron is results. In this form of cast iron carbon is found to be combined form of Graphite.

What is composition of White cast iron ?

White Cast Iron: When re molted pig iron is suddenly cooled, white cast iron is results. In this form of cast iron carbon is found to be combined form as cementite (Fe₃C).

What are the composition of pig iron?.

Pig Iron: Composition:

SN	Impurities	%
1	Carbon (C)	3- 4.3
2	Silicon (Si)	1-2.0
3	Manganese (Mn)	0.5-2.0
4	Phosphorous (P)	0.05-2.0
5	Sulphure (S)	0.05-1.0

Alloys and their Composition and uses are as follows:

SN	Alloys Name	Composition in %	Uses
1	Brass	Cu (60 – 80), Zn (40 – 20)	Utensils
2	Bell metal	Cu (80), Zn (20)	Bells
3	Bronze	Cu (70 – 90), Zn (10 – 30)	Statues, coins
4	German silver	(Cu – 50, Zn – 25, Ni – 57)	Resistance coils, ornaments
5	Monel metal	(Cu – 30, Fe, Mn -3, Ni -57)	Acid containers
6	Aluminium Bronze	(Cu – 90, Al –10)	Ornaments
7	Gun metal	(Cu – 87, Sn – 19, Zn – 3)	Gears
8	Duralumin	(Al – 95, Cu – 4, Mg -5, An- 5)	Automobile parts
9	Magnalium	(Al – 98, Mg – 2)	Aeronatical materials
10	Type metal	(Pb – 75, Sb – 20, Zn – 5)	Printer
11	Common solder	(Pb – 50, Sn – 50)	Soldering
12	Stainless steel	Cr (14 -18), N (7-9), Fe (73 -79)	Utensils
13	Electron	(Mg – 95, Zn – 4.5, Cu – 0.5)	Automobile parts
14	Constantine	(Cu – 60, Ni – 40)	Electrical apparatus
15	Pewter	(Pb – 25, Sn – 75)	Water reservoir

LIST OF IMPORTANT INORGANIC COMPOUNDS:

S.N.	Chemical Formula	Common Name
1	MgCO3	Magnesite
2	MgSO4.7H2O	Epsom salt
3	MgAl2O4	Spinal
4	Ca2Mg2Si6O22(OH)2	Asbestos
5	Cu(OH)2.CuCO3	Malachite
6	PbS	Galena
7	Fe2O3.3H2O	Limonite
8	ZnSO4.7H2O	White Vitriol
9	CaO	Quick lime
10	Pb3O4	Red lead
11	Na2CO3	Soda ash
12	KOH	Caustic potash
13	CaSO4.2H2O	Gypsum
14	FeSO4.7H2O	Green Vitriol
15	HgCl2	Corrosive Sublimate
16	BaSO4	Baryte or heavy spar
17	PbO	litharge
18	HgS	Cinnabar
19	ZnS	Zinc blende
20	AgNO3	Lunar Caustic
21	SnCl2.5H2O	Butter of Iron
22	Na2SO4.10H2O	Glauber’s salt
23	Pb(OH)2.2PbCO3	White lead
24	NaOH	Caustic Soda
25	Ca(OH)2	Slaked lime
26	(CaSO4)2H2O	Plaster of Paris
27	Hg2Cl2	Calomel
28	PbSO4	Anglesite
29	ZnO	Philosopher’s wool
30	MgCO3.CaCO3	Dolomite
31	KCl.MgCl2.6H2O	Carnalite
32	H2MgSiO3	Talc
33	KAlSi3O8	Feldspar
34	Cu(OH)2.2CuCO3	Azurite
35	Fe3O4	Magnetite