Question 15 Marks
Look at the given picture carefully and answer the related questions:
(i) Which step of metallurgy is performed by this method?
(ii) Give two examples of ores related to this method.
(iii) Write the property of ore and the principle of this process.
(iv) Name two other processes that come under the step of metallurgy in (i).
(i) Which step of metallurgy is performed by this method?
(ii) Give two examples of ores related to this method.
(iii) Write the property of ore and the principle of this process.
(iv) Name two other processes that come under the step of metallurgy in (i).
Answer
View full question & answer→(i) Concentration of ore
(ii) Haematite (Fe2O3), Magnetite (Fe3O4)
(iii) Such ores must have magnetic properties.
Principle: The pulverised ore is allowed to fall on a moving rubber belt, such that one of the pulleys on which the belt moves has a strong electromagnet within it.
The non-magnetic part of the ore falls down directly to form a separate heap. The magnetic part of the ore clings to the belt and falls a short distance away from the electromagnetic pulley to form a separate heap.
(iv) Gravity process and Froth Floatation process.
(ii) Haematite (Fe2O3), Magnetite (Fe3O4)
(iii) Such ores must have magnetic properties.
Principle: The pulverised ore is allowed to fall on a moving rubber belt, such that one of the pulleys on which the belt moves has a strong electromagnet within it.
The non-magnetic part of the ore falls down directly to form a separate heap. The magnetic part of the ore clings to the belt and falls a short distance away from the electromagnetic pulley to form a separate heap.
(iv) Gravity process and Froth Floatation process.
