2007-01-18 03:12:12 · 4 answers · asked by Linka 1 in Environment
It depends on the concentration of the ore. Typically this is around 30%. So to get 1 ton of iron you need, 3.33 tons of ore.
Steel is made by adding minute amount of carbon (between 0.02 and 1.7% per weight) so the proportion holds.
Please note that the value of 30% is quite arbitrary. I have seen mines with concentration ranging all the way to 65%. Some mines don't even concentrate the stuff before shipping it.
2007-01-18 03:26:33 · answer #1 · answered by catarthur 6 · 0⤊ 0⤋
Most iron is made from Fe3O4 or Fe2O3 ore. Since Fe(iron) is three times the mass of O(oxygen) you can do the math and see that about 2/3 of the mass of the ore is iron and 1/3 is oxygen.
2007-01-18 03:24:55 · answer #2 · answered by jim m 5 · 0⤊ 0⤋
42
2007-01-18 03:19:04 · answer #3 · answered by Away With The Fairies 7 · 0⤊ 0⤋
Guess what - it all depends how much iron is in the ore !
2007-01-18 03:27:56 · answer #4 · answered by Steve B 7 · 0⤊ 0⤋