Compare roasting and calcination name an ore in zinc
Answers
Answer:
Calcination is the process of getting carbon from its ore in the absence of air. Extraction of Zinc - Zinc is extracted through carbon reduction of the ore Zinc blende (ZnS) ore by specially designed blast furnaces. Difference between roasting and calcination.
Answer:
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Explanation:
Roasting
where an ore is converted into its oxide by heating it above its melting point in the presence of excess air. While calcination is mostly used in the oxidation of carbonates, roasting is a method that is used for converting sulphide ores. During roasting, moisture and non metallic impurities in the form of volatile gases are released. Process of roasting consist of solid-gas thermal reaction which includes oxidation, reduction, sulfation, chlorination and pyro hydrolysis.
CALCINATION
a thermal process that is used to convert ores and other solid materials by bringing about thermal decomposition. In calcination, reaction most of the time occurs at or above the thermal decomposition temperature.
So, calcination is mostly used in the decomposition of limestone (calcium carbonate) to lime (calcium oxide) and carbon dioxide.CaCo3 —> CaO + CO2Meanwhile, the products that are derived from calcination are know as calcine, and it is regardless of actual compounds undergoing thermal treatment.
An ore of zinc is Zinc blende(ZnS)
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