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Describe the method of ore dressing shown opposite - Leaving Cert Engineering - Question a - 2011
Question a
Describe the method of ore dressing shown opposite. (b) Explain the term co-polymer. (c) Identify any three barrier materials that may be applied to mild steel to ... show full transcript
Worked Solution & Example Answer:Describe the method of ore dressing shown opposite - Leaving Cert Engineering - Question a - 2011
Step 1
Describe the method of ore dressing shown opposite.
Answer
The method of ore dressing illustrated is magnetic separation. In this process, ores that possess magnetic properties are ground into smaller particles and passed over a rotating drum. The drum contains a magnet inside it, which generates a magnetic field that attracts the magnetic ore particles. As the grinding mixture flows over the drum, non-magnetic waste material falls freely from the drum. The magnetic ore particles cling to the drum due to the magnetism and are eventually either released when the drum rotates away from the magnetic field or scraped off, allowing for effective separation of valuable ores from waste.
Step 2
Explain the term co-polymer.
Answer
A co-polymer is defined as a polymer formed by the combination of two different types of monomers that link together in the same polymer chain. This results in a new polymer that retains certain properties from both types of base monomers. The significance of co-polymers lies in their ability to produce a variety of materials with distinct characteristics, which can enhance the overall performance of the polymer. A common example of a co-polymer is the combination of ethylene and vinyl chloride, which produces polyvinyl chloride (PVC), a material prized for its versatility and durability.
Step 3