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Dr. S. M. Condren Chapter 21 Chemistry of the Metals.

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Presentation on theme: "Dr. S. M. Condren Chapter 21 Chemistry of the Metals."— Presentation transcript:

1 Dr. S. M. Condren Chapter 21 Chemistry of the Metals

2 Dr. S. M. Condren

3 Metallurgy the extraction of metals from ores the preparation of metals for use the study of the relationship between structures and properties of metals

4 Dr. S. M. Condren Metallurgy Pretreatment of Ore Concentration Roasting

5 Dr. S. M. Condren

6 Pretreatment of Ore crude ore is crushed

7 Dr. S. M. Condren Concentration floatation

8 Dr. S. M. Condren Roasting converting sulfide ore to oxide 2ZnS (s) + 3O 2(g) -----> 2ZnO (s) + 2SO 2(g) 2CuS (s) + 3O 2(g) -----> 2CuO (s) + 2SO 2(g) 3FeS 2(s) + 8O 2(g) -----> Fe 3 O 4(s) + 6SO 2(g)

9 Dr. S. M. Condren Manufacture of Iron and Steel Chemistry of blast furnace Chemistry of basic oxygen furnace

10 Dr. S. M. Condren Chemistry of blast furnace iron reduction raw materials

11 Dr. S. M. Condren Several Blast Furnaces

12 Dr. S. M. Condren Liquid Iron Pour

13 Dr. S. M. Condren Fe (l) & Slag (l) Pours

14 Dr. S. M. Condren

15 Chemistry of blast furnace raw materials: iron ore limestone or lime coke

16 Dr. S. M. Condren Chemistry of blast furnace iron ore => source of iron Fe 2 O 3, Fe 3 O 4, FeO, SiO 2

17 Dr. S. M. Condren Chemistry of blast furnace limestone or lime => flux to remove impurities CaCO 3 or CaO

18 Dr. S. M. Condren Chemistry of blast furnace coke => reducing agent C

19 Dr. S. M. Condren Chemistry of blast furnace C (s) + O 2(g) -----> CO 2(g) coke air

20 Dr. S. M. Condren Chemistry of blast furnace CO 2 + C ---> 2 CO coke

21 Dr. S. M. Condren Chemistry of blast furnace 3 Fe 2 O 3(s) + CO (g) -----> 2Fe 3 O 4(s) + CO 2(g) iron ore

22 Dr. S. M. Condren Chemistry of blast furnace Fe 3 O 4(s) + CO (g) -----> 3FeO (s) + CO 2(g) iron ore

23 Dr. S. M. Condren Chemistry of blast furnace FeO (s) + CO (g) -----> Fe (l) + CO 2(g) iron ore pig iron

24 Dr. S. M. Condren Chemistry of blast furnace CaCO 3(s) + heat -----> CaO (s) + CO 2(g) limestone lime

25 Dr. S. M. Condren Chemistry of blast furnace CaO (s) + SiO 2(s) -----> CaSiO 3(l) limesandslag

26 Dr. S. M. Condren Purification of Metals Distillation Electrolysis Chemical Reactions

27 Dr. S. M. Condren Distillation mercury

28 Dr. S. M. Condren Electrolysis Copper Aluminum Sodium

29 Dr. S. M. Condren Production of Copper Cu 2 S (l) + O 2(g) -----> 2 Cu (l) + SO 2(g) Cu (s) ----->Cu (s) impure electrolysispure

30 Dr. S. M. Condren Electrolysis of molten salt 2 NaCl (l)  2 Na (l) + Cl 2(g)

31 Dr. S. M. Condren Chemistry of Basic Oxygen Furnace iron purification steel making raw materials

32 Dr. S. M. Condren Chemistry of Basic Oxygen Furnace raw materials pig iron from blast furnace fluxing agent to remove impuritites alloying agents

33 Dr. S. M. Condren

34 Chemistry of Basic Oxygen Furnace Removal of excess of carbon C (s) + O 2(g) -----> CO 2(g) impurity air in pig iron

35 Dr. S. M. Condren

36 Chemistry of Electric Furnace raw materials scrap iron fluxing agent to remove impuritites alloying agents


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