Solution
Solution

| Products | Weight(%) |
| Crude oil | 40-45 |
| Carbon black | 30-35 |
| Scrap steel | 10-15 |
| Gases |
10-15 |


| Weight(%) | ELEMENT |
| 71 | carbon |
| 13.3 | oxygen |
| 5.4 | iron |
| 2.8 | sulphur |
| 2.3 | zinc |
| 1.3 | calcium |
| 0.3 | aluminium |
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