The reductant used in the extraction of magnesium from calcinated dolomite via Pidgeon's process is
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Metallurgical Engineering · all questionsExtractive Metallurgy
Extractive Metallurgy
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Thiobacillus ferroxidans is used in
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Identify the metal that can not be produced by carbothermic reduction.
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Match the following phenomena with the corresponding extraction related processes.
| P. Anode effect | 1. Cu extraction |
| Q. Formation of scaffolds | 2. Blastfurnace |
| R. Formation of white metal | 3. Hydrocyclone |
| S. Classification | 4. Al extraction |
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Percentage of copper present in concentrated copper sulphide ore is
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Match the following:
| Group 1 | Group 2 |
| P. Flash smelting | 1. Tungsten |
| Q. Blast furnace | 2. Aluminium |
| R. Reduction by hydrogen | 3. Copper |
| S. Fused salt electrowinning | 4. Lead |
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The most abundant metal present in the earth's crust is
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In the Bayer process, bauxite is digested under pressure using
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Ores of magnesium are
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Speisses is a mixture of the following:
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Identify the incorrect statement with reference to unit processes in extractive metallurgy.
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Ores of Titanium are
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Which types process involve for Mg Extraction
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Match the following:
| Group 1 | Group 2 |
| P. Fire refinning | 1. Zirconium |
| Q. Zone refinning | 2. Nickel |
| R. Refinning via carbonyl | 3. Germanium |
| S. Iodide refining | 4. Copper |
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Debismuthizing of lead extraction
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Match the metals in Group 1 with the processes in Group 2.
| Group 1 | Group 2 |
| P. Aluminium | 1. Poling |
| Q. Copper | 2. Fused salt electrolysis |
| R. Zinc | 3. Rotary kiln process |
| S. Iron sponge | 4. Distillation |
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Match the process in group 1 to its description in group 2.
| Group 1 | Group 2 |
| P. COREX process | 1. Decarburisation of liquid steel |
| Q. OBM process | 2. Steel making using oxygen |
| R. Carbonyl process | 3. Nickel refmning |
| S. AOD process | 4. Alternative route of liquid iron production |
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Identify the correct statement with reference to the extractive metallurgy of aluminium.
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Which types of process generally take place by friction moments along wet vibrating solid surface
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Monazite deposits constitute an important source forthe following metal
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