Celebrex arthritis drug safety study surprises heart experts. Back in 2004, a popular arthritis drug called Vioxx was pulled off the market when studies showed daily long-term use could increase the risk of heart attack, stroke and death.
How Steel is Made: a Brief Summary of a Blast Furnace: There are two types of metals, ferrous & non-ferrous. Ferrous comes from, or contains iron, while Non-Ferrous does not contain iron. Some examples of ferrous metals would be mild steel, cast iron, high strength steel, and tool steels. Examples of non-ferrous metals would be copper, aluminum, magnesium, titanium, etc. To make steel, iron ore is first mined from the ground. It is then smelted in blast furnaces where the impurities are removed and carbon is added.
Steel is an alloy because it is a mixture of a metal (iron) with other elements (carbon and perhaps other metals too). Iron from the blast furnace contains about ~96% iron with ~4% of impurities including carbon, silica and phosphorus.In this state the cast iron is too hard and too brittle for most purposes.aCO3. 1  Iron ore is used to make iron and steel eg haematite and magnetite. 2  Iron is produced (extracted) in a blast furnace by reducing iron oxides with carbon and it is the carbon that removes the oxygen from the iron oxides the carbon is known as the reducing agent.