which are the main points of principles of metallurgy all over the chapter class10th 11 chapter
Answers
Answer:
The answer is given below.
Explanation:
Basic Principles of Metallurgy
A few elements like carbon, sulphur, gold, platinum, copper, silver, mercury and noble gases, occur in the free state while others in combined forms like oxides, sulphides, carbonates, sulphates, silicates etc. in the earth's crust.
Among metals, aluminium is the most abundant.
Answer:
Metallurgy is defined as a process that is used for the extraction of metals in their pure form.
Explanation:
1.Crushing and grinding: The first process in metallurgy is crushing of ores into a fine powder in a crusher or ball mill.
2.The concentration of ores: The process of removing impurities from ore is known as a concentration of minerals or ore dressing.
3. Roasting and calcination: In metallurgy, the process of heating a concentrated ore in the presence of oxygen is known as roasting. This process is applied in a case of sulfide ores. For ores containing carbonate or hydrated oxides, heating is done in the absence of air to melt the ores, and this process is known as calcination.
OM!