What are the problems associated with recycling metals like iron and aluminium??

Question

plz let me knw asap...cheerz...

Answer 1

It takes 1200 degrees to melt Aluminium. To start bauxite is clay from which Aluminium is processed takes aprx 3500 degrees. So which would think cost less. Also depending on how you want to alloy it it's far cheaper to recycle it. For some  projects you may not be able to use recycle due to building codes or for safety.

Answer 2

Whilst it is true that recycling the actual metal is very good from the energy and resopurce saving point of view, the problems associated with recycling metals are many fold.  Basically it is the contaminating substances with the base metal which can cause problems.  Oily metal for example needs to be collected, stored and transported in such a way as not to cause pollution as oil is washed off by rain.  Some paints and coatings are potentially problematic to the remelting furnace so high standards of fume collection and treatment are necessary there.  Aluminium is seldom pure Al but more often an alloy and therefore there is a need to control the mix of metals.  Also with iron, if copper is mixed in with iron scrap and melted together there is no technical way to remove the copper again.  All this leads to the need for careful segregation of scrap types in order to address these negatives and maximise the positive benefit of recycling in the first place.

Answer 3

there a none other than the lack of them .They have already gone through the most intense part of processing and to re smelt them to liquid and reform to metal takes only a fraction of energy.Since metals have been smelted buy man it has been the original 'recycled' material

Answer 4

iron rusts and seep water into the ground

Ally is not so bad but doesnt rust and so stays longer there

Regards

m

http://www.hoffey.com/dayz.html

Answer 5

it is better to recycle them and more environmentally friendly, the problem is the work involved,

and also one major over looked issue with recycled products in general, is that those products were never meant to have a second life, so when you force it to it is often substantially weaker- if your looking for a metal for a builing, its best to go with a new product.

Answer 6

There aren't many. That is why those are some of the most widely recycled materials. The main problem is the labor needed to collect and separate it from other materials.

Answer 7

Takes far less energy to recycle aluminum than it does to make in the first place.

Answer 8

none that I know of

Answer 9

they r poisonous