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

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Presentation transcript:

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

Dr. S. M. Condren

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

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

Dr. S. M. Condren

Pretreatment of Ore crude ore is crushed

Dr. S. M. Condren Concentration floatation

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)

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

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

Dr. S. M. Condren Several Blast Furnaces

Dr. S. M. Condren Liquid Iron Pour

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

Dr. S. M. Condren

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

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

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

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

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

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

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

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

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

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

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

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

Dr. S. M. Condren Distillation mercury

Dr. S. M. Condren Electrolysis Copper Aluminum Sodium

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

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

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

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

Dr. S. M. Condren

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

Dr. S. M. Condren

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

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