Pyrometallurgical processes – part IV

Question 1

‘High temperature processing IV’

Answer 1

Question 2

Metal production from sulphides

Answer 2

Question 3

Ellingham diagram for sulphides

Answer 3

Question 4

Ellingham diagram for oxides

Answer 4

Question 5

So we need a pH2/pH2S of 104 /1 (vs. a pH2/pH2O of 1/106 )

Answer 5

Question 6

Predominance diagram

Matte + O2

Answer 6

Question 7

Copper production

Answer 7

Question 8

Predominance diagram

Molten FeS-Cu2S + air

Answer 8

Question 9

Copper production: (1) Slag forming stage

Answer 9

Question 10

Copper production: (1) Slag forming stage

diagram

Answer 10

Question 11

Copper production: (2) Copper making stage

Answer 11

Question 12

Copper production

Answer 12

Question 13

Metal production from halides

Answer 13

Question 14

Ti production from chloride

remember

Answer 14

Question 15

Ti production from chloride

Metallothermic reduction

Answer 15

Question 16

Purification

Answer 16

Question 17

Purification – forming of compounds

Answer 17

Question 18

Lead refining

Answer 18

Question 19

Iron and steel refining

Answer 19

Question 20

Iron and steel refining

Mass and energy balance

Answer 20

Mass and energy balance

Question 21

Iron and steel refining

3 steps

Answer 21

Question 22

Purification - Vacuum refining

Answer 22

Question 23

scheme of rh process

Answer 23

Question 24

Purification - Zone refining

Answer 24

Question 25

relation of initial liquid and solid formed

Answer 25

Question 26

concentration of solutes

Answer 26

Question 27

range of particle sizes produced

Answer 27

Question 28

techniques used in gas streams

Answer 28

Question 29

EHS issues

Answer 29