The Al2O3 content of cryolite in Hall-Heroult's cell is maintained between
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Metallurgical Engineering · all questionsExtractive Metallurgy
Extractive Metallurgy
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Hydrometallurgy is a process of extraction in which extraction of metal is done
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Percentage of nickel present in concentrated Ni ore is
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Which metal is extracted by leaching?
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Mattee smelting is used in the extraction of
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If supposed speed of rotation of ball mill is too much high, then what force generally take place inside the container.
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Process of extraction of Zn is
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In a roasting process, the set of conditions that favour sulphate formation from metal sulphide concentrates are.
P. high temperature
Q. high partial pressure of oxygen
R. use of excess air
S. high partial pressure of SO3
P. high temperature
Q. high partial pressure of oxygen
R. use of excess air
S. high partial pressure of SO3
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What are the uses of Manganese
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Match the extraction methods in Group 1 with the metals in Group 2.
| Group 1 | Group 2 |
| P. Roasting followed by carbothermic reduction | 1. Ti |
| Q. Electrolysis of fused salt | 2. Pb |
| R. Roasting followed by controlled oxidation | 3. Al |
| S. Halide process | 4. Cu |
| 5. Au |
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In the Gadeu Process, the purity in % and density of Aluminium
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Identify the correct statement.
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What are the disadvantages of Newer Process
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In the commercial production of which of the following metals, metallothermic reduction is used?
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Which one of the following minerals is a source of titanium?
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Match the metal in Group 1 with its corresponding ore in Group 2.
| Group 1 | Group 2 |
| P. Ni | 1. Monazite |
| Q. Th | 2. Cassiterite |
| R. Pb | 3. Penlandite |
| S. Sn | 4. Galena |
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Zone refinning is a process in which
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Match the following metals with their extraction processes.
| Group 1 | Group 2 |
| P. Gold | 1. Pidgeon process |
| Q. Titanium | 2. Cyanidation |
| R. Magnesium | 3. Mond process |
| S. Nickel | 4. Kroll's process |
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Characteristics of Aluminium metal
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Match the following ores with their chemical formula.
| Group 1 | Group 2 |
| P. Sphalerite | 1. Cu2S |
| Q. Covellite | 2. CuS |
| R. Anglesite | 3. PbSO4 |
| S. Chalcocite | 4. ZnS |
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