Chemistry · Metallurgy
Which of the following processes describes the metallurgical process of roasting?
- 1Melting the ore with a flux to separate the impurities as slag
- 2Reducing the oxide ore with carbon or carbon monoxide at high temperatures
- 3Heating the ore strongly in the absence or limited supply of air below its melting point
- 4Heating the concentrated ore regularly below its melting point in the presence of excess air✓
Correct answer
Heating the concentrated ore regularly below its melting point in the presence of excess air
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