define calcination,roasting, leaching,smelting.
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Calcination is the process in which a concentrated ore is heated strongly in the absence of air to convert it into metal oxide.
Roasting is a process in which an ore is heated strongly in the presence of excess of air to convert it into metal oxide.
The oxides of moderately reactive metals like zinc , iron , copper , nickel , lead and tin are usually reduced by using carbon as a reducing agent. This process is called smelting.
Roasting is a process in which an ore is heated strongly in the presence of excess of air to convert it into metal oxide.
The oxides of moderately reactive metals like zinc , iron , copper , nickel , lead and tin are usually reduced by using carbon as a reducing agent. This process is called smelting.
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Calcination-heating of ore in the absence(or limited supply of air) below the fusion temperature.
Roasting-ore is heated in a regular supply of air in a furnace at a temperature below the melting point of metal.
leaching-powdered ore is treated with certain reagents in which the ore is soluble but impurities are not soluble.
Smelting-in this process, the ore is gently heated in the presence of reducing agents like CO, C etc.. to extract the base metal .
HOPE THIS HELPS YOU.
Calcination-heating of ore in the absence(or limited supply of air) below the fusion temperature.
Roasting-ore is heated in a regular supply of air in a furnace at a temperature below the melting point of metal.
leaching-powdered ore is treated with certain reagents in which the ore is soluble but impurities are not soluble.
Smelting-in this process, the ore is gently heated in the presence of reducing agents like CO, C etc.. to extract the base metal .
HOPE THIS HELPS YOU.
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