Roasting and calcination

  • Thread starter ajayguhan
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In summary, roasting and calcination are thermal processes used to remove impurities from substances. Roasting involves heating with oxygen, while calcination involves heating without oxygen. Roasting is commonly used for ores and sulfide compounds, while calcination is commonly used for carbonate compounds and organic materials. The main purpose of both processes is to remove impurities and transform the substance into a more useful form. Factors such as temperature, duration of heating, and oxygen presence or absence can affect the processes. Roasting and calcination have various industrial applications, including metal production, cement production, food and pharmaceutical production, and environmental processes.
  • #1
ajayguhan
153
1
I know that sulphide ore are roasted while carbonate ore are calcinated.

What will happen if we roast carbonate ore and calcinated sulphide ore?
 
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  • #2
No one knew?
 

1. What is the difference between roasting and calcination?

Roasting and calcination are both thermal processes used to remove impurities from a substance. Roasting involves heating a substance in the presence of oxygen, while calcination involves heating a substance in the absence of oxygen.

2. What types of substances are commonly roasted or calcined?

Roasting is commonly used for ores and sulfide compounds, while calcination is commonly used for carbonate compounds and organic materials.

3. What is the purpose of roasting and calcination?

The main purpose of roasting and calcination is to remove impurities from a substance and to transform it into a more useful form. This can include removing sulfur from ores or converting calcium carbonate into calcium oxide.

4. What are the main factors that affect the roasting and calcination processes?

The main factors that affect roasting and calcination are temperature, duration of heating, and the presence or absence of oxygen. The type of substance being heated can also play a role in the process.

5. What are some common applications of roasting and calcination in industries?

Roasting and calcination have various industrial applications, such as in the production of metals, cement, and chemicals. They are also commonly used in the production of food and pharmaceuticals, as well as in environmental processes for waste treatment and air pollution control.

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